Abstract:
The present invention relates to an equipment engine mounting system and method for mounting an equipment engine to an equipment frame using dampers, elastomeric and nonelastomeric components to inhibit the a transmission of vibrations of the equipment engine to the equipment frame.

Description:
CROSS REFERENCE 
     This application is a Divisional of application Ser. No. 11/363,140 filed Feb. 27, 2006, now U.S. Pat. No. 7,788,808, which claims the benefit of U.S. Provisional Patent Application No. 60/656,569 filed Feb. 25, 2005; U.S. Provisional Patent Application No. 60/659,802 filed Mar. 9, 2005; U.S. Provisional Patent Application No. 60/663,822 filed Mar. 21, 2005; and U.S. Provisional Patent Application No. 60/667,498 filed Apr. 1, 2005, the above which are incorporated by reference and the benefit of which are claimed. 
    
    
     FIELD OF THE INVENTION 
     The present invention relates to a method/system for controlling problematic vibrations. More particularly the invention relates to an engine mounting system for controlling vibrations, particularly systems and methods for mounting devices having problematic vibrations, particularly problematic vibration engines. 
     BACKGROUND OF THE INVENTION 
     Engine vibrations are particularly troublesome in that they can cause fatigue and wear on the equipment that they are utilized with and the operators and people in contact with the equipment. In some equipment vibrations are particularly problematic in that they can damage the actual structure and components that make up the equipment in addition to the contents of the equipment. 
     There is a need for a system and method of accurately and economically controlling vibrations and mounting vibrating engines. There is a need for a system and method of accurately and economically controlling vibrations. There is a need for an economically feasible method of controlling vibrations in equipment with engines so that the vibrations are efficiently minimized. There is a need for a robust system of controlling vibrations in engine equipment so that the vibrations are efficiently controlled and minimized. There is a need for an economic method/system for mounting engines and controlling problematic vibrations. 
     SUMMARY OF THE INVENTION 
     The invention includes an equipment engine mounting system for mounting an equipment engine to an equipment frame. The equipment engine mounting system preferably includes a first engine mount disposed between the equipment engine and the equipment frame, the first engine mount including a first engine mount nonextensible inner member, the first engine mount nonextensible inner member having an outer bonding surface, the first engine mount including a first engine mount nonextensible outer member, the first engine mount nonextensible outer member having an inner bonding surface. Preferably the first engine mount includes an intermediate elastomer between the first engine mount nonextensible inner member and the first engine mount nonextensible outer member, the first engine mount intermediate elastomer bonded to the first engine mount nonextensible inner member outer bonding surface and the first engine mount nonextensible outer member inner bonding surface, the first engine mount intermediate elastomer, the first engine mount nonextensible inner member, and the first engine mount nonextensible outer member forming a liquid housing cavity, the liquid housing cavity containing a first variable volume liquid chamber proximate the first engine mount nonextensible inner member and a second variable volume liquid chamber, the second variable volume liquid chamber distal from the first engine mount nonextensible inner member. Preferably the first variable volume liquid chamber is segregated from the second variable volume liquid chamber by a nonextensible rigid liquid track member having a perimeter liquid track path, the first variable volume liquid chamber and the second variable volume liquid chamber filled with a mount liquid. The first variable volume liquid chamber is in liquid communication with the second variable volume liquid chamber through the outer perimeter liquid track path, wherein a movement of the first engine mount nonextensible inner member relative to the first engine mount nonextensible outer member plungers the mount liquid in the first variable volume liquid chamber. Preferably the equipment engine mounting system includes a second engine mount disposed between the equipment engine and the equipment frame, the second engine mount including a second engine mount nonextensible frameside member, the second engine mount nonextensible frameside member having an outer bonding surface, the second engine mount including a second engine mount nonextensible engineside member, the second engine mount nonextensible engineside member having an inner bonding surface, the second engine mount comprised a highly damped elastomer between the second engine mount nonextensible frameside member and the second engine mount nonextensible engineside member, the highly damped elastomer bonded to the second engine mount nonextensible frameside member outer bonding surface and the second engine mount nonextensible engineside member inner bonding surface. Preferably the highly damped elastomer has a tan delta of at least 0.2. Preferably the engine mounting system mounts inhibit a transmission of a vibration of the equipment engine to the equipment frame. 
     The invention includes an equipment engine mount for mounting an equipment engine to an equipment frame. The equipment engine mount includes an equipment engine mount nonextensible inner member, the equipment engine mount nonextensible inner member having an outer bonding surface, the equipment engine mount including a equipment engine mount nonextensible outer member, the equipment engine mount nonextensible outer member having an inner bonding surface, the equipment engine mount including an intermediate elastomer between the equipment engine mount nonextensible inner member and the equipment engine mount nonextensible outer member, the equipment engine mount intermediate elastomer bonded to the equipment engine mount nonextensible inner member outer bonding surface and the equipment engine mount nonextensible outer member inner bonding surface. Preferably the equipment engine mount intermediate elastomer, the equipment engine mount nonextensible inner member, and the equipment engine mount nonextensible outer member form a liquid housing cavity, the liquid housing cavity containing a first variable volume liquid chamber proximate the equipment engine mount nonextensible inner member and a second variable volume liquid chamber, the second variable volume liquid chamber distal from the equipment engine mount nonextensible inner member. Preferably the first variable volume liquid chamber is segregated from the second variable volume liquid chamber by a nonextensible liquid track member having an outer perimeter liquid track path, the first variable volume liquid chamber and the second variable volume liquid chamber filled with a mount liquid. Preferably the first variable volume liquid chamber is in liquid communication with the second variable volume liquid chamber only through the outer perimeter liquid track path, wherein a movement of the equipment engine mount nonextensible inner member relative to the equipment engine mount nonextensible outer member plungers the mount liquid in the equipment variable volume liquid chamber. 
     The invention includes an adjustable mount having a band notch frequency band for isolating a vibrating body. The mount includes an adjustable mount nonextensible inner member, the adjustable mount nonextensible inner member having an outer bonding surface. Preferably the adjustable mount includes an adjustable mount nonextensible outer member, the adjustable mount nonextensible outer member having an inner bonding surface. Preferably the adjustable mount includes an intermediate elastomer between the adjustable mount nonextensible inner member and the adjustable mount nonextensible outer member, the adjustable mount intermediate elastomer bonded to the adjustable mount nonextensible inner member outer bonding surface and the adjustable mount nonextensible outer member inner bonding surface, the adjustable mount intermediate elastomer, the adjustable mount nonextensible inner member, and the adjustable mount nonextensible outer member forming a liquid housing cavity. Preferably the liquid housing cavity contains a first variable volume liquid chamber proximate the adjustable mount nonextensible inner member and a second variable volume liquid chamber, the second variable volume liquid chamber distal from the adjustable mount nonextensible inner member. Preferably the first variable volume liquid chamber is segregated from the second variable volume liquid chamber by a nonextensible rigid adjustable liquid track member having an outer perimeter liquid track path, the adjustable liquid track member including a first variable volume liquid chamber top track piece and a second variable volume liquid chamber bottom track piece, the first variable volume liquid chamber top track piece and the second variable volume liquid chamber bottom track piece having corresponding periodic attachment point members. Preferably the top track piece and the bottom track piece are attached together with the periodic attachment point members with the liquid track path having a first path length. Preferably the top track piece is clockable relative to the bottom track piece inorder to change the liquid track path length to a second track path length. Preferably the periodic attachment point members secure the second track path length. Preferably the first variable volume liquid chamber and the second variable volume liquid chamber are filled with a mount liquid, the first variable volume liquid chamber in liquid communication with the second variable volume liquid chamber through the outer perimeter liquid track path, wherein a movement of the adjustable mount nonextensible inner member relative to the adjustable mount nonextensible outer member plungers the mount liquid in the first variable volume liquid chamber. 
     The invention includes a method of making an engine mount for mounting an engine to a frame, the method including: providing an engine mount nonextensible inner member bonded with an intermediate elastomer to an engine mount nonextensible outer member, providing an engine mount flexible diaphragm, providing an engine mount nonextensible inertial liquid track member having a liquid track path, providing an engine mount housing, assembling the engine mount flexible diaphragm, the engine mount nonextensible inertial liquid track member, the engine mount housing, and the engine mount nonextensible inner member bonded with the intermediate elastomer to the engine mount nonextensible outer member to provide a liquid housing cavity containing a first variable volume liquid chamber proximate the engine mount nonextensible inner member and a second variable volume liquid chamber adjacent the mount flexible diaphragm, the second variable volume liquid chamber distal from the engine mount nonextensible inner member with the first variable volume liquid chamber segregated from the second variable volume liquid chamber by the nonextensible inertial liquid track member. The method includes filling the first variable volume liquid chamber and the second variable volume liquid chamber with a mount liquid, the first variable volume liquid chamber in liquid communication with the second variable volume liquid chamber through the liquid track path, wherein a movement of the engine mount nonextensible inner member relative to the engine mount nonextensible outer member plungers the mount liquid in the first variable volume liquid chamber. 
     The invention includes a method of making an equipment engine mounting system. The method includes providing a first equipment engine mount nonextensible inner member bonded with an intermediate elastomer to a first equipment engine mount nonextensible outer member. The method includes providing an equipment engine mount flexible diaphragm. The method includes providing an equipment engine mount nonextensible inertial liquid track member having a liquid track path. The method includes providing an equipment engine mount housing. The method includes assembling the engine mount flexible diaphragm, the equipment engine mount nonextensible inertial liquid track member, the equipment engine mount housing, and the first equipment engine mount nonextensible inner member bonded with the intermediate elastomer to the first equipment engine mount nonextensible outer member to provide a liquid housing cavity containing a first variable volume liquid chamber proximate the equipment engine mount nonextensible inner member and a second variable volume liquid chamber adjacent the mount flexible diaphragm, with the second variable volume liquid chamber distal from the equipment engine mount nonextensible inner member with the first variable volume liquid chamber segregated from the second variable volume liquid chamber by the nonextensible inertial liquid track member. The method includes filling the first variable volume liquid chamber and the second variable volume liquid chamber with a mount liquid. Preferably assembling and filling provides the first variable volume liquid chamber in liquid communication with the second variable volume liquid chamber through the liquid track path to provide a first liquid engine mount. Preferably the method includes providing a second engine mount nonextensible frameside member, the second engine mount nonextensible frameside member having an outer bonding surface. The method includes providing a second engine mount nonextensible engineside member, the second engine mount nonextensible engineside member having an inner bonding surface. The method includes providing a second engine mount elastomer and mold bonding the second engine mount elastomer to the second engine mount nonextensible frameside member and the second engine mount nonextensible engineside member, with the second engine mount elastomer bonded to the second engine mount nonextensible frameside member outer bonding surface and the second engine mount nonextensible engineside member inner bonding surface to provide a second engine mount. 
     The invention includes a mounting system for mounting a vibrating source to a frame, the mounting system including a first mount disposed between the source and the frame. Preferably the first mount includes a first mount nonextensible inner member, the first mount nonextensible inner member having an outer bonding surface, the first mount including a first mount nonextensible outer member, the first mount nonextensible outer member having an inner bonding surface, the first mount comprised an intermediate elastomer between the first mount nonextensible inner member and the first mount nonextensible outer member, the first mount intermediate elastomer bonded to the first mount nonextensible inner member outer bonding surface and the first mount nonextensible outer member inner bonding surface. Preferably the first mount intermediate elastomer, the first mount nonextensible inner member, and the first mount nonextensible outer member form a liquid housing cavity, the liquid housing cavity containing a first variable volume liquid chamber proximate the first mount nonextensible inner member and a second variable volume liquid chamber, the second variable volume liquid chamber distal from the first mount nonextensible inner member, the first variable volume liquid chamber segregated from the second variable volume liquid chamber by a nonextensible rigid liquid track member having a perimeter liquid track path. Preferably the first variable volume liquid chamber and the second variable volume liquid chamber are filled with a mount liquid, the first variable volume liquid chamber in liquid communication with the second variable volume liquid chamber through the outer perimeter liquid track path, wherein a movement of the first mount nonextensible inner member relative to the first mount nonextensible outer member plungers the mount liquid in the first variable volume liquid chamber. Preferably the system includes a second mount disposed between the source and the frame, the second mount including a second mount nonextensible frameside member, the second mount nonextensible frameside member having an outer bonding surface, the second mount including a second mount nonextensible sourceside member, the second engine mount nonextensible sourceside member having an inner bonding surface, the second mount comprised a highly damped elastomer between the second mount nonextensible frameside member and the second mount nonextensible sourceside member, the highly damped elastomer bonded to the second mount nonextensible frameside member outer bonding surface and the second mount nonextensible sourceside member inner bonding surface. Preferably the highly damped elastomer has a tan delta of at least 0.2, with the mounting system inhibiting a transmission of a vibration of the source to the frame. 
     The invention includes an engine mount for mounting an engine to a frame. The engine mount including an engine mount nonextensible rigid nonelastomer metal inner member, the engine mount nonextensible inner member having an outer bonding surface, the engine mount including an engine mount nonextensible rigid nonelastomer metal outer member, the engine mount nonextensible outer member having an inner bonding surface. The engine mount includes an intermediate elastomer between the engine mount nonextensible inner member and the engine mount nonextensible outer member, the engine mount intermediate elastomer bonded to the engine mount nonextensible inner member outer bonding surface and the engine mount nonextensible outer member inner bonding surface, the engine mount intermediate elastomer, the engine mount nonextensible inner member, and the engine mount nonextensible outer member forming a liquid housing cavity. Preferably the liquid housing cavity contains a first variable volume liquid chamber proximate the engine mount nonextensible inner member and a second variable volume liquid chamber, the second variable volume liquid chamber distal from the engine mount nonextensible inner member, the first variable volume liquid chamber segregated from the second variable volume liquid chamber by a nonextensible rigid nonelastomer inertial liquid track member having an outer perimeter, the nonextensible rigid nonelastomer inertial liquid track member having an outer perimeter tuned liquid track path proximate the liquid track member outer perimeter and the engine mount nonextensible rigid nonelastomer metal outer member. Preferably the first variable volume liquid chamber and the second variable volume liquid chamber are filled with a mount liquid, the first variable volume liquid chamber in liquid communication with the second variable volume liquid chamber only through the outer perimeter liquid track path. Preferably a movement of the engine mount nonextensible inner member relative to the engine mount nonextensible outer member plungers the mount liquid in the variable volume liquid chamber and moves the mount liquid in the outer perimeter tuned liquid track path with the engine mount having a frequency notch band. 
     It is to be understood that both the foregoing general description and the following detailed description are exemplary of the invention, and are intended to provide an overview or framework for understanding the nature and character of the invention as it is claimed. The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification. The drawings illustrate various embodiments of the invention, and together with the description serve to explain the principals and operation of the invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1  shows an equipment engine mounting system mounting an engine to a frame to control vibrations. 
         FIG. 2  shows the equipment engine mounting system and frame of  FIG. 1  with the engine removed. 
         FIGS. 3A-D  show a liquid mount. 
         FIGS. 4A-B  show components of a liquid mount. 
         FIG. 5  shows a method of making a liquid mount. 
         FIGS. 6A-G  show views of a liquid track member component. 
         FIGS. 7A-C  show views of a liquid mount component. 
         FIGS. 8A-C  show views of a liquid mount component. 
         FIGS. 9A-B  show stiffness curve frequency notch band plots. 
         FIGS. 10A-B  show stiffness curve frequency notch band plots. 
         FIGS. 11A-B  show stiffness curve frequency notch band plots. 
         FIGS. 12A-B  show stiffness curve frequency notch band plots. 
         FIGS. 13A-B  show stiffness curve frequency notch band plots. 
         FIGS. 14A-B  show stiffness curve frequency notch band plots. 
         FIGS. 15A-B  show stiffness curve frequency notch band plots. 
         FIGS. 16A-B  show stiffness curve frequency notch band plots. 
         FIGS. 17A-B  show an engine mount. 
         FIGS. 18A-F  show views of an engine mount. 
         FIG. 19  shows a method of making an engine mount. 
         FIG. 20  shows an adjustable liquid track member. 
         FIGS. 21A-C  show views of an adjustable liquid track member component. 
         FIGS. 22A-E  show views of an adjustable liquid track member component. 
         FIG. 23  shows an adjustable liquid track member and method of adjusting track length. 
         FIG. 24  shows an adjustable liquid track member and method of adjusting track length. 
         FIG. 25  shows an adjustable liquid track member and method of adjusting track length. 
         FIG. 26  shows an adjustable liquid track member and method of adjusting track length. 
         FIG. 27  shows an adjustable liquid track member and method of adjusting track length. 
         FIG. 28  shows an adjustable liquid track member and method of adjusting track length. 
         FIGS. 29A-B  show stiffness curve frequency notch band plots. 
         FIGS. 30A-B  show stiffness curve frequency notch band plots. 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     Additional features and advantages of the invention will be set forth in the detailed description which follows, and in part will be readily apparent to those skilled in the art from that description or recognized by practicing the invention as described herein, including the detailed description which follows, the claims, as well as the appended drawings. 
     Reference will now be made in detail to the present preferred embodiments of the invention, examples of which are illustrated in the accompanying drawings. 
     The invention includes an equipment engine mounting system for mounting an equipment engine to an equipment frame.  FIG. 1-2  show an equipment engine mounting system  50  for mounting an equipment engine  12  to equipment frame  10 . Preferably the engine  12  is a less than three cylinder engine, most preferably a two cylinder engine. The equipment engine mounting system  50  is comprised of a first front lower engine mount  52  disposed between the equipment engine  12  and the equipment frame  10 . Preferably the engine mount  52  is in front of the middle center of the engine. Preferably the engine mount  52  is below the middle center of the engine. The first engine mount  52  is comprised of a first engine mount nonextensible rigid nonelastomer metal inner member  54 , the first engine mount nonextensible inner member  54  having an outer bonding surface  56 . The first engine mount  50  is comprised of a first engine mount nonextensible rigid nonelastomer metal outer member  58 , the first engine mount nonextensible outer member  58  having an inner bonding surface  60 . The first engine mount  52  comprised an intermediate elastomer  62  between the first engine mount nonextensible inner member  54  and the first engine mount nonextensible outer member  58 , the first engine mount intermediate elastomer  62  bonded to the first engine mount nonextensible inner member outer bonding surface  56  and the first engine mount nonextensible outer member inner bonding surface  60 . The first engine mount intermediate elastomer  62 , the first engine mount nonextensible inner member  54 , and the first engine mount nonextensible outer member  58  forming a liquid housing cavity  64 . The liquid housing cavity  64  containing a first variable volume liquid chamber  66  proximate the first engine mount nonextensible inner member  54  and a second variable volume liquid chamber  68 , the second variable volume liquid chamber  68  distal from the first engine mount nonextensible inner member  54 . The first variable volume liquid chamber  66  segregated from the second variable volume liquid chamber  68  by a nonextensible rigid inertial liquid track member  70  having a outer perimeter tuned liquid track path  72  proximate the outer perimeter of the track member  70 . Preferably the outer perimeter tuned liquid track path  72  formed by the track member perimeter groove  74  and the outer member with the bonded elastomer. Preferably the track member perimeter groove  74  is a curved circular outer perimeter groove, preferably with a D shaped flat-curved cross section with the flat side preferably on the outer member side. The first variable volume liquid chamber  66  and the second variable volume liquid chamber  68  contain and are filled with a mount liquid  76  with the first variable volume liquid chamber  66  in liquid communication with the second variable volume liquid chamber  68  through the outer perimeter liquid track path  72 , wherein a movement of the first engine mount nonextensible inner member  54  relative to the first engine mount nonextensible outer member  58  plungers the mount liquid  76  in the first variable volume liquid chamber  66 . Preferably the movement of the equipment engine mount nonextensible inner member  54  relative to the equipment engine mount nonextensible outer member  58  plungers the mount liquid  76  in the equipment variable volume liquid chamber  66  with the mount  52  having a frequency notch band centered about a center frequency X Hz (X±5 Hz). Preferably the mount  52  has a frequency notch band in the range from W (X−5) Hz to Y (X+5) Hz. Preferably the frequency notch band is centered about X with a band width of about 10 Hz. 
     As shown in  FIG. 1-2  the equipment engine-mounting system  50  is comprised of a second rear lower engine mounts  78  disposed between the equipment engine  12  and the equipment frame  10 . Preferably the engine mounts  78  are to the rear of the middle center of the engine. Preferably the engine mount  78  are below the middle center of the engine. As shown in  FIG. 17-18  the second engine mount  78  is comprised of a second engine mount nonextensible rigid nonelastomer metal frameside member  80 . The second engine mount nonextensible frameside member  80  having an outer bonding surface  82 . The second engine mount  78  comprised of a second engine mount nonextensible rigid nonelastomer metal engineside member  84 , the second engine mount nonextensible engineside member  84  having an inner bonding surface  86 . The second engine mount  78  is comprised a highly damped elastomer  88  between the second engine mount nonextensible frameside member  80  and the second engine mount nonextensible engineside member  84 . The highly damped elastomer  88  is bonded to the second engine mount nonextensible frameside member outer bonding surface  82  and the second engine mount nonextensible engineside member inner bonding surface  86 . The highly damped elastomer preferably having a tan delta of at least 0.2 (with the tan delta of the elastomer being the damping stiffness/elastic stiffness (K″/K′)). 
     As shown in  FIG. 2  the equipment engine mounting system  50  preferably is comprised of a third rear lower engine mount  78  disposed between the equipment engine  12  and the equipment frame  10 . As with the second engine mount, preferably the third engine mount  78  is to the rear of the middle center of the engine. Preferably the third engine mount  78  is below the middle center of the engine. The third engine mount  78  is comprised of a third engine mount nonextensible rigid nonelastomer metal frameside member  80 , the third engine mount nonextensible frameside member  80  having an outer bonding surface  82 . The third engine mount includes a third engine mount nonextensible engineside member  84 , the third engine mount nonextensible engineside member  84  having an inner bonding surface  86 . The third engine mount includes the highly damped elastomer  88  between the third engine mount nonextensible frameside member  80  and the third engine mount nonextensible engineside member  84 . The highly damped elastomer  88  is bonded to the third engine mount nonextensible frameside member outer bonding surface  82  and the third engine mount nonextensible engineside member inner bonding surface  86 , with the highly damped elastomer  88  having a tan delta of at least 0.2. As shown in  FIG. 2  preferably the third mount  78  is proximate the second mount  78 . Preferably the second and third mounts nonextensible are left and right hand mirror image pairs. 
     Preferably the second and third mounts  78  include at least one nonextensible rigid nonelastomer metal shim  90  bonded in the elastomer  88 . Preferably two nonextensible rigid nonelastomer metal shims are bonded in the elastomer  88  between the engine mount nonextensible frameside member  80  and the third engine mount nonextensible engineside member. As shown in  FIG. 19  the elastomer  88 , the shims  90 , nonextensible rigid nonelastomer metal frameside member  80 , and the nonextensible engineside member  84 , of the rear mount  78  are mold bonded in a mold  92 . Preferably the elastomer  88  is mold bonded to the nonextensible rigid nonelastomer metal members  80  and  84  in a mold  92  such as shown in  FIG. 19 . Preferably the engine mount elastomer component  88  is mold bonded to the mount nonextensible member  80  and the mount nonextensible member  84  in an elastomer press mold  92 , preferably with a rubber to metal bonding adhesive ensuring the bonding of the elastomer  88  to the metal outer bonding surfaces  82  and  86 . Preferably the elastomer  88  is a mold bonded elastomeric member with the elastomer bonded to the rigid nonextensible member  80  and the nonextensible member  84  during the molding of the elastomer to the rigid metal nonextensible members with a rubber to metal bonding agent, preferably a rubber to metal bonding adhesive such as the Lord Chemlok rubber to metal bonding system, in the elastomer press mold  92  that accepts the rigid metal nonextensible members such as shown in  FIG. 19 . Preferably the method of making the engine mount  78  includes providing an elastomeric element mold  92  for receiving the nonelastomeric rigid metal nonextensible members, providing an elastomer  88 , and molding the elastomer  88  to the nonelastomeric metal nonextensible members inside the mold  88 . Preferably the elastomer  88  is comprised of a natural rubber elastomer. Most preferably the elastomer is comprised of an ethylene acrylic elastomer, preferably a Vamac ethylene/acrylic elastomer. In an embodiment such as shown in  FIG. 19  molding in the mold includes providing the elastomer  88  as an elastomer transfer stock  96 , and transferring the elastomer transfer stock  96  under a pressure into the mold  92 , such as through a sprue  94  with the mold  92  comprising close fitting steel metal pieces pressed in place, and vulcanizing curing the elastomer  88  inside the mold  92  under a molding pressure, preferably a molding pressure of at least 300 psi, preferably at least 500 psi. 
     Preferably the engine mounting system mounts  50  inhibits a transmission of an idle vibration of the equipment engine  12  to the equipment frame  10 . 
     Preferably the first engine mount nonextensible inner member  54  includes an engine mounting attachment stud  55 , preferably with the first engine mount nonextensible inner member  54  mounted with the equipment engine  12  on the engineside  53  of the first mount  52 . Preferably the engine mounting attachment stud  55  is on the distal end of the inner member  54  from the liquid chambers  66  and  68 , preferably with the engine  12  attached at an axial end of the first mount  52 . 
     Preferably the first engine mount nonextensible outer member  58  includes a frame interfacing attachment flange  59 . Preferably the first engine mount nonextensible outer member  58  is mounted with the equipment frame  10 , on the frameside  61  of the first mount  52 . Preferably the frame interfacing attachment flange  59  is proximate the first liquid chamber  66 , preferably with the frame  10  attached proximate the axial middle of the mount  52  between the engine mount end  46  and the distal opposite end  48 . 
     Preferably the first engine mount intermediate elastomer  62  is comprised of a lightly damped elastomer having a tan delta less than 0.2 (damping stiffness/elastic stiffness, (K″/K′)). Preferably the mount liquid  76  is comprised of a glycol, preferably comprised of an ethylene glycol, or a propylene glycol, and most preferably a mixture of ethylene glycol and propylene glycol. Preferably the mount liquid  76  has a viscosity less than 100 centipoises, preferably less than 50 centipoises, and most preferably less than 30 centipoises. In a preferred embodiment the mount liquid viscosity is about 22 (±5) centipoises at 75 degrees F., preferably with the liquid having a density of about 0.0395 lbs per inch cubed. Preferably the elastomer  62  is mold bonded to the nonextensible rigid nonelastomer metal members  54  and  58  in a mold  51  such as shown in  FIG. 5 . Preferably the first engine mount intermediate elastomer component  62  is mold bonded to the first engine mount nonextensible inner member  54  and the first engine mount nonextensible outer member  58  in an elastomer press mold  51 , preferably with a rubber to metal bonding adhesive ensuring the bonding of the elastomer  62  to the metal outer bonding surfaces  56  and  60 . Preferably the first engine mount intermediate elastomer  62  is a mold bonded elastomeric member with the elastomer bonded to the rigid first engine mount nonextensible inner member and the first engine mount nonextensible outer member during the molding of the elastomer to the rigid metal nonextensible members with a rubber to metal bonding agent, preferably a rubber to metal bonding adhesive such as the Lord Chemlok rubber to metal bonding system, in an elastomer press mold  51  that accepts the rigid metal nonextensible members such as shown in  FIG. 5 . Preferably the method of making the engine mount  52  includes providing an elastomeric element mold  51  for receiving the nonelastomeric rigid metal nonextensible members, providing an elastomer  62 , and molding the elastomer  62  to the nonelastomeric metal nonextensible members inside the mold  51 . Preferably the elastomer  62  is comprised of a natural rubber elastomer. In an embodiment such as shown in  FIG. 5  molding in the mold includes providing the elastomer  62  as an elastomer transfer stock  63 , and transferring the elastomer transfer stock  63  under a pressure into the mold  51 , such as through a sprue  49  with the mold  51  comprising close fitting steel metal pieces pressed in place, and vulcanizing curing the elastomer  62  inside the mold  51  under a molding pressure, preferably a molding pressure of at least 300 psi, preferably at least 500 psi. 
     Preferably the first engine mount nonextensible inner member  54  defines a liquid fill passage  42 , preferably the first engine mount nonextensible inner member outer bonding surface  56  extends into the liquid passage  42  with elastomer  62  bonded to this extending liquid passage outer bonding surface such as shown in  FIG. 4A-B . Preferably the mount liquid  76  filling the mount chambers  66  and  68  is disposed into the mount  52  through the first engine mount nonextensible inner member liquid fill passage  42 , then the passage  42  is plugged, preferably with the plug rivet  40  that engages both the metal surfaces of the inner member  54  and the elastomer  62  in the liquid passage  42 , preferably with rivet  40  then covered by the engine mounting attachment stud  55  inserted into the inner member  54 , preferably with the end of the bonded elastomer/metal interface of passage  42  adjacent the rivet plug  40  and not adjacent the liquid  76  that fills the chambers. 
     Preferably the invention includes the equipment engine mount  52  for mounting an equipment engine to an equipment frame. The equipment engine mount  52  is preferably comprised of an equipment engine mount nonextensible rigid nonelastomer metal inner member  54 , the equipment engine mount nonextensible inner member having an outer bonding surface  56 . The equipment engine mount  52  is comprised of an equipment engine mount nonextensible rigid nonelastomer metal outer member  58 , the equipment engine mount nonextensible outer member  58  having an inner bonding surface  60 . The equipment engine mount comprised an intermediate elastomer  62  between the equipment engine mount nonextensible inner member and the equipment engine mount nonextensible outer member, the equipment engine mount intermediate elastomer bonded to the equipment engine mount nonextensible inner member outer bonding surface and the equipment engine mount nonextensible outer member inner bonding surface. The equipment engine mount intermediate elastomer, the equipment engine mount nonextensible inner member, and the equipment engine mount nonextensible outer member form a liquid housing cavity  64 , the liquid housing cavity containing a first variable volume liquid chamber  66  proximate the equipment engine mount nonextensible inner member and a second variable volume liquid chamber  68 , the second variable volume liquid chamber  68  distal from the equipment engine mount nonextensible inner member  54 . The first variable volume liquid chamber  66  is segregated from the second variable volume liquid chamber  68  by a nonextensible rigid inertial liquid track member  70  having an outer perimeter tuned liquid track path  72 , preferably proximate its outer perimeter. Preferably the track  72  is formed by the track member perimeter groove  74  and the outer member  58 . In a preferred embodiment the liquid track member  70  is formed from a polymeric material, preferably a plastic material, and most preferably a nylon material. The first variable volume liquid chamber and the second variable volume liquid chamber contain and are filled with a mount liquid  76 , with the first variable volume liquid chamber in liquid communication with the second variable volume liquid chamber through the outer perimeter liquid track path  72 , wherein a movement of the equipment engine mount nonextensible inner member  54  relative to the equipment engine mount nonextensible outer member  58  plungers the mount liquid  76  in the equipment variable volume liquid chamber  66 . Preferably the mount  52  has a frequency notch band centered about a center frequency X Hz (X±5 Hz). Preferably the mount  52  has a frequency notch band in the range from W (X−5) Hz to Y (X+5) Hz. Preferably the frequency notch band is centered about X with a band width of about 10 Hz. 
       FIGS. 9-16  show stiffness curves for the mount  52 . The curves give K*, phase angle, K′, and K″ for the mount  52  at ±0.1 mm and ±1 mm. 
     Preferably the first engine mount nonextensible inner member  54  includes an engine mounting attachment stud  55 , preferably with the first engine mount nonextensible inner member  54  mounted with the equipment engine  12  on the engineside  53  of the first mount  52 . Preferably the engine mounting attachment stud  55  is on the distal end of the inner member  54  from the liquid chambers  66  and  68 , preferably with the engine  12  attached at an axial end of mount of the first mount  52 . 
     Preferably the first engine mount nonextensible outer member  58  includes a frame interfacing attachment flange  59 . Preferably the first engine mount nonextensible outer member  58  is mounted with the equipment frame  10 , on the frameside  61  of the first mount  52 . Preferably the frame interfacing attachment flange  59  is proximate the first liquid chamber  66 , preferably with the frame  10  attached proximate the axial middle of the mount  52  between the engine mount end  46  and the distal opposite end  48 . 
     Preferably the first engine mount intermediate elastomer  62  is comprised of a lightly damped elastomer having a tan delta less than 0.2 [tan delta of the elastomer is the damping stiffness/elastic stiffness (K″/K′)]. Preferably the mount liquid  76  is comprised of a glycol, preferably comprised of an ethylene glycol, or a propylene glycol, and most preferably a mixture of ethylene glycol and propylene glycol. Preferably the mount liquid  76  has a viscosity less than 100 centipoises, preferably less than 50 centipoises, and most preferably less than 30 centipoises. In a preferred embodiment the mount liquid viscosity is about 22 (±5) centipoises at 75 degrees F., preferably with the liquid having a density of about 0.0395 lbs per inch cubed. Preferably the elastomer  62  is mold bonded to the nonextensible rigid nonelastomer metal members  54  and  58  in a mold  51  such as shown in  FIG. 5 . Preferably the first engine mount intermediate elastomer component  62  is mold bonded to the first engine mount nonextensible inner member  54  and the first engine mount nonextensible outer member  58  in an elastomer press mold  51 , preferably with a rubber to metal bonding adhesive ensuring the bonding of the elastomer  62  to the metal outer bonding surfaces  56  and  60 . Preferably the first engine mount intermediate elastomer  62  is a mold bonded elastomeric member with the elastomer bonded to the rigid first engine mount nonextensible inner member and the first engine mount nonextensible outer member during the molding of the elastomer to the rigid metal nonextensible members, with a rubber to metal bonding agent, preferably a rubber to metal bonding adhesive such as the Lord Chemlok rubber to metal bonding system, in an elastomer press mold  51  that accepts the rigid metal nonextensible members such as shown in  FIG. 5 . Preferably the method of making the engine mount  52  includes providing an elastomeric element mold  51  for receiving the nonelastomeric rigid metal nonextensible members, providing an elastomer  62 , and molding the elastomer  62  to the nonelastomeric metal nonextensible members inside the mold  51 . Preferably the elastomer  62  is comprised of a natural rubber elastomer. In an embodiment such as shown in  FIG. 5  molding in the mold includes providing the elastomer  62  as an elastomer transfer stock  63 , and transferring the elastomer transfer stock  63  under a pressure into the mold  51 , such as through a sprue  49  with the mold  51  comprising close fitting steel metal pieces pressed in place, and vulcanizing curing the elastomer  62  inside the mold  51  under a molding pressure, preferably a molding pressure of at least 300 psi, preferably at least 500 psi. Preferably the first engine mount nonextensible inner member  54  defines a liquid fill passage  42 , preferably the first engine mount nonextensible inner member outer bonding surface  56  extends into the liquid passage  42  with elastomer  62  bonded to this extending liquid passage outer bonding surface such as shown in  FIGS. 4A-B . Preferably the mount liquid  76  filling the mount chambers  66  and  68  is disposed into the mount  52  through the first engine mount nonextensible inner member liquid fill passage  42 , then the passage  42  is plugged, preferably with the plug rivet  40  that engages both the metal surfaces of the inner member  54  and the elastomer  62  in the liquid passage  42 , preferably with rivet  40  then covered by the engine mounting attachment stud  55  inserted into the inner member  54 , preferably with the end of the bonded elastomer/metal interface of passage  42  adjacent the rivet plug  40  and not adjacent the liquid  76  that fills the chambers. 
     In an embodiment the invention preferably includes an adjustable engine mount  52 , having an adjustable band notch frequency band for isolating a vibrating body engine  12  from a frame  10 . The adjustable mount  52  preferably includes an adjustable engine mount nonextensible rigid nonelastomer metal inner member  54 , the adjustable mount nonextensible inner member  54  having an outer bonding surface  56 . The adjustable mount includes an adjustable mount nonextensible outer member  58 , the adjustable mount nonextensible outer member having an inner bonding surface  60 . The adjustable mount includes an intermediate elastomer  62  between the adjustable mount nonextensible inner member  54  and the adjustable mount nonextensible outer member  58 , the adjustable mount intermediate elastomer bonded to the adjustable mount nonextensible inner member outer bonding surface and the adjustable mount nonextensible outer member inner bonding surface. The adjustable mount intermediate elastomer, the adjustable mount nonextensible inner member, and the adjustable mount nonextensible outer member form a liquid housing cavity  64 , the liquid housing cavity containing a first variable volume liquid chamber  66  proximate the adjustable mount nonextensible inner member and a second variable volume liquid chamber  68 , the second variable volume liquid chamber distal from the adjustable mount nonextensible inner member. The first variable volume liquid chamber  66  is segregated from the second variable volume liquid chamber  68  by a nonextensible rigid inertial adjustable liquid track member  70 ′ having an outer perimeter liquid track path  72 ′ proximate its outer perimeter, preferably formed by the track member perimeter groove  74 ′ and the outer member  58 . As shown in  FIG. 20 , the adjustable liquid track member  70 ′ is comprised of a second variable volume liquid chamber bottom track piece  100  and a first variable volume liquid chamber top track piece  102 . As shown in  FIGS. 20-28 , preferably the second variable volume liquid chamber bottom track piece  100  and the first variable volume liquid chamber top track piece  102  have corresponding periodic attachment point members  104 , the top track piece and the bottom track piece attached together with a plurality attachment fixture members  106 , such as four attachment fixturing threaded screws, received at the periodic attachment point members  104  with the liquid track path  72 ′ having a first path length, wherein with the attachment fixture members  106  removed, the bottom track piece  100  is separatable from the top piece  102 , with the bottom track piece  100  and its liquid entrance track port  108  is rotatably clockable relative to the top track piece  102  and its liquid entrance track port  108  inorder to change the liquid track path length  72 ′ to a second track path length  72 ′, with the attachment fixture members  106  re-received at the periodic attachment point members  104  to secure the shorter second track path length  72 ′. The first variable volume liquid chamber and the second variable volume liquid chamber are filled with the mount liquid  76 , the first variable volume liquid chamber in liquid communication with the second variable volume liquid chamber through the outer perimeter liquid track path  72 ′, wherein a movement of the adjustable engine mount nonextensible inner member relative to the adjustable engine mount nonextensible outer member plungers the mount liquid in the first variable volume liquid chamber. Clocking of the output hole liquid entrance track ports  108  of the liquid track along the length of the outer perimeter liquid track path circumference preferably provides at least a third track path length, preferably at least a fourth track path length, preferably at least a fifth track path length, preferably a sixth track path length, preferably a seventh track path length, and preferably a eighth track path length. Preferably the adjustable track path lengths provide an adjustable band notch frequency band with a band center ≧WHz, more preferably ≧X−1 Hz. Preferably the adjustable track path lengths provide adjustable band notch frequency bands, preferably within the range of W to Y Hz. Preferably the adjustable track path lengths provides a frequency notch band centered about XHz (X±5 Hz). Preferably the frequency notch band centered about XHz with a band width of about 10 Hz.  FIGS. 20 and 23  show the output hole liquid entrance track ports  108  positioned to provide a maximum long track path length  72 ′ along the perimeter groove  74 ′ similar to the liquid track path  72  of liquid track member  70  such as shown in  FIG. 6 , to produce stiffness curves for the mount  52  such as shown in  FIG. 9-16 .  FIG. 24-25  show the clocking of the track pieces  100  and  102  of  FIG. 23  by 180 degrees to a shorter second track path length  72 ′ after the fixture members  106  have been removed, with the first longer position of port  108  in track piece  100  shown as dashed lines.  FIG. 26  shows the fixture members  106  positioned and re-received at the periodic attachment point members  104  to secure the shorter second track path length  72 ′.  FIG. 27  shows the 180 degree clocked shorter second track path length  72 ′ between ports  108 , compared to the longer first track path length  72 ′ shown in  FIG. 28 .  FIG. 29-30  show stiffness curves for the mount  52  utilizing the 180 degree clocked shorter second track path length  72 ′ between ports  108  as shown in  FIG. 27 . In comparing  FIG. 29  with  FIG. 9 , the band notch frequency band is shifted to the right; with the adjustment of the path length of the adjustable engine mount  52  to a shorter path length adjusting the band notch frequency band to a higher frequency. 
     Preferably the invention includes the method of making the equipment engine mount  52  for mounting an equipment engine to an equipment frame. The method includes: providing the equipment engine mount nonextensible rigid nonelastomer metal inner member  54  having an outer bonding surface  56 . The nonextensible rigid nonelastomer metal inner member  54  bonded with the intermediate elastomer  62  to the equipment engine mount nonextensible rigid nonelastomer metal outer member  58 , with the elastomer  62  between the equipment engine mount nonextensible inner member  54  and outer member  58 . The method includes providing an equipment engine mount flexible extensible elastomeric diaphragm  69  such as shown in  FIG. 7 . The invention includes providing an equipment engine mount nonextensible rigid nonelastomer inertial liquid track member having an outer perimeter tuned liquid track path proximate its outer perimeter. The method includes providing an equipment engine mount housing  77 , preferably a rigid nonextensible nonelastomer housing flanged cup member  77  formed from a steel metal material, such as shown in  FIG. 8 . The method includes assembling the engine mount flexible diaphragm  69 , the equipment engine mount nonextensible inertial liquid track member, the equipment engine mount housing  77 , and the equipment engine mount nonextensible inner member  54  bonded with the intermediate elastomer  62  to the equipment engine mount nonextensible outer member  58 , to provide a liquid housing cavity  64  containing a first variable volume liquid chamber  66  proximate the equipment engine mount nonextensible inner member and a second variable volume liquid chamber  68  adjacent the mount flexible diaphragm  69 , the second variable volume liquid chamber  68  distal from the equipment engine mount nonextensible inner member  54  with the first variable volume liquid chamber  66  segregated from the second variable volume liquid chamber  68  by the nonextensible inertial liquid track member. Preferably the assembling includes crimping the outer member  58  to secure the placement of the components. Preferably as shown in  FIG. 3A , the outer member  58  is crimped over and around the outer perimeter of the liquid track member, the diaphragm  69 , and the housing  77 , preferably with the outer perimeter of the diaphragm  69  sandwiched between the housing  77  and the liquid track member, preferably with the elastomer bonded to the outer member  58  extending beyond the liquid track member, and preferably beyond the housing  77 . Preferably the first variable volume liquid chamber  66  has an unactuated volume, said unactuated volume preferably greater than the volume of said liquid track member liquid track path. Preferably the second variable volume liquid chamber  68  has an unactuated volume, said unactuated volume preferably greater than the volume of said liquid track member liquid track path. The method includes filling the first variable volume liquid chamber and the second variable volume liquid chamber with the mount liquid  76 , the first variable volume liquid chamber  66  in liquid communication with the second variable volume liquid chamber  68  through the liquid track path, wherein a movement of the equipment engine mount nonextensible inner member  54  relative to the equipment engine mount nonextensible outer member  58  plungers the mount liquid in the equipment first variable volume liquid chamber  66 . Preferably the mount liquid  76  is comprised of a glycol, preferably comprised of an ethylene glycol, or a propylene glycol, and most preferably a mixture of ethylene glycol and propylene glycol. Preferably the mount liquid  76  has a viscosity less than 100 centipoises, preferably less than 50 centipoises, and most preferably less than 30 centipoises. In a preferred embodiment the mount liquid viscosity is about 22 (±5) centipoises at 75 degrees F., preferably with the liquid having a density of about 0.0395 lbs per inch cubed. Preferably the first engine mount nonextensible inner member  54  defines a liquid fill passage  42 , preferably the first engine mount nonextensible inner member outer bonding surface  56  extends into the liquid passage  42  with elastomer  62  bonded to this extending liquid passage outer bonding surface such as shown in  FIG. 4A-B . Preferably the mount liquid  76  filling the mount chambers  66  and  68  is disposed into the mount  52  through the first engine mount nonextensible inner member liquid fill passage  42 , then the passage  42  is plugged, preferably with the plug rivet  40  that engages both the metal surfaces of the inner member  54  and the elastomer  62  in the liquid passage  42 , preferably with rivet  40  then covered by the engine mounting attachment stud  55  inserted into the inner member  54 , preferably with the end of the bonded elastomer/metal interface of passage  42  adjacent the rivet plug  40  and not adjacent the liquid  76  that fills the chambers. Preferably the elastomer  62  is mold bonded to the nonextensible rigid nonelastomer metal members  54  and  58  in a mold  51  such as shown in  FIG. 5 . Preferably the first engine mount intermediate elastomer component  62  is mold bonded to the first engine mount nonextensible inner member  54  and the first engine mount nonextensible outer member  58  in an elastomer press mold  51 , preferably with a rubber to metal bonding adhesive ensuring the bonding of the elastomer  62  to the metal outer bonding surfaces  56  and  60 . Preferably the first engine mount intermediate elastomer  62  is a mold bonded elastomeric member with the elastomer bonded to the rigid first engine mount nonextensible inner member and the first engine mount nonextensible outer member during the molding of the elastomer to the rigid metal nonextensible members with a rubber to metal bonding agent, preferably a rubber to metal bonding adhesive such as the Lord Chemlok rubber to metal bonding system, in an elastomer press mold  51  that accepts the rigid metal nonextensible members such as shown in  FIG. 5 . Preferably the method of making the engine mount  52  includes providing an elastomeric element mold  51  for receiving the nonelastomeric rigid metal nonextensible members, providing an elastomer  62 , and molding the elastomer  62  to the nonelastomeric metal nonextensible members inside the mold  51 . Preferably the elastomer  62  is comprised of a natural rubber elastomer. In an embodiment such as shown in  FIG. 5  molding in the mold includes providing the elastomer  62  as an elastomer transfer stock  63 , and transferring the elastomer transfer stock  63  under a pressure into the mold  51 , such as through a sprue  49  with the mold  51  comprising close fitting steel metal pieces pressed in place, and vulcanizing curing the elastomer  62  inside the mold  51  under a molding pressure, preferably a molding pressure of at least 300 psi, preferably at least 500 psi. 
     The invention includes the method of making the equipment engine mounting system  50 . The method includes providing the first equipment engine mount nonextensible inner member bonded with the intermediate elastomer to the first equipment engine mount nonextensible outer member. The nonextensible rigid nonelastomer metal inner member  54  bonded with the intermediate elastomer  62  to the equipment engine mount nonextensible rigid nonelastomer metal outer member  58 , with the elastomer between the equipment engine mount nonextensible inner member and outer member. The method includes providing an equipment engine mount flexible extensible elastomeric diaphragm  69  such as shown in  FIG. 7 . The invention includes providing an equipment engine mount nonextensible rigid nonelastomer inertial liquid track member  70 ,  70 ′ having an outer perimeter tuned liquid track path  72 ,  72 ′ proximate its outer perimeter. The method includes providing an equipment engine mount housing  77 , preferably a rigid nonextensible nonelastomer housing member  77  such as shown in  FIG. 8 . The method includes assembling the engine mount flexible diaphragm  69 , the equipment engine mount nonextensible inertial liquid track member  70 ,  70 ′, the equipment engine mount housing  77 , and the equipment engine mount nonextensible inner member bonded with the intermediate elastomer to the equipment engine mount nonextensible outer member, to provide a liquid housing cavity  64  containing a first variable volume liquid chamber  66  proximate the equipment engine mount nonextensible inner member  54  and a second variable volume liquid chamber  68  adjacent the mount flexible diaphragm  69 , the second variable volume liquid chamber distal from the equipment engine mount nonextensible inner member  54  with the first variable volume liquid chamber segregated from the second variable volume liquid chamber by the nonextensible inertial liquid track member  70 , 70 ′. The method includes filling the first variable volume liquid chamber  66  and the second variable volume liquid chamber  68  with the mount liquid  76 , the first variable volume liquid chamber in liquid communication with the second variable volume liquid chamber through the liquid track path  72 ,  72 ′ to provide said first liquid mount  52 . The method includes providing the second engine mount nonextensible frameside member  80 , the second engine mount nonextensible frameside member  80  having an outer bonding surface  82 . The method includes providing the second engine mount nonextensible engineside member  84 , the second engine mount nonextensible engineside member  84  having an inner bonding surface  86 . The method includes providing the highly damped second engine mount elastomer  88  and mold bonding the second engine mount elastomer  88  to the second engine mount nonextensible frameside member  80  and the second engine mount nonextensible engineside member  84 , with the highly damped elastomer  88  bonded to the second engine mount nonextensible frameside member outer bonding surface  82  and the second engine mount nonextensible engineside member inner bonding surface  86 , to provide a second engine mount  78 . The highly damped elastomer  88  having a tan delta of at least 0.2 [damping stiffness/elastic stiffness, (K″/K′)]. Preferably the method includes providing the third engine mount  78 . 
     Preferably the invention provides the equipment engine mounting system for mounting a vibrating source equipment engine  12  to a equipment frame  10 , the equipment engine mounting system  50  comprised of the first lower mount  52  disposed between the vibrating source  12  and the frame  10 , the first mount  52  comprised of the first engine mount nonextensible rigid nonelastomer metal inner member  54 , the first engine mount nonextensible inner member  54  having an outer bonding surface  56 , the first engine mount  52  comprised of a first engine mount nonextensible rigid nonelastomer metal outer member  58 , the first engine mount nonextensible outer member  58  having an inner bonding surface  60 , the first engine mount  52  comprised an intermediate elastomer  62  between the first engine mount nonextensible inner member  54  and the first engine mount nonextensible outer member  58 , the first engine mount intermediate elastomer  62  bonded to the first engine mount nonextensible inner member outer bonding surface  56  and the first engine mount nonextensible outer member inner bonding surface  60 , the first engine mount intermediate elastomer  62 , the first engine mount nonextensible inner member  54 , and the first engine mount nonextensible outer member  58  forming a liquid housing cavity  64 , the liquid housing cavity  64  containing a first variable volume liquid chamber  66  proximate the first engine mount nonextensible inner member  54  and a second variable volume liquid chamber  68 , the second variable volume liquid chamber  68  distal from the first engine mount nonextensible inner member  54 , the first variable volume liquid chamber  66  segregated from the second variable volume liquid chamber  68  by a nonextensible rigid inertial liquid track member  70 ,  70 ′ having a outer perimeter tuned liquid track path  72 , 72 ′ proximate its outer perimeter. Preferably the outer perimeter tuned liquid track path  72  is formed by the track member perimeter groove  74  and the outer member  58  and the bonded elastomer  62 , preferably the perimeter groove  74  is a curved circular outer perimeter groove, preferably with a D shaped flat-curved cross section, preferably with the flat side of the D on the bonded elastomer  62  outer member  58  side. Preferably the outer perimeter tuned liquid track path  72 ′ is formed by the track member perimeter groove  74 ′ and the outer member  58  and the bonded elastomer  62 , preferably the perimeter groove  74 ′ is a curved circular outer perimeter groove, preferably with a D shaped flat-curved cross section, preferably with the flat side of the D on the bonded elastomer  62  outer member  58  side. The first variable volume liquid chamber  66  and the second variable volume liquid chamber  68  are filled with a mount liquid  76 , the first variable volume liquid chamber  66  in liquid communication with the second variable volume liquid chamber  68  through the outer perimeter liquid track path  72 , 72 ′, wherein a movement of the first mount nonextensible inner member  54  relative to the first engine mount nonextensible outer member  58  plungers the mount liquid  76  in the first variable volume liquid chamber  66 . The mounting system includes a second rear engine mount  78  disposed between the equipment engine source  12  and the equipment frame  10 , the second engine mount  78  comprised of a second mount nonextensible frameside member  80 , the second mount nonextensible frameside member  80  having an outer bonding surface  82 , the second mount  78  comprised of a second mount nonextensible engineside member  84 , the second engine mount nonextensible engineside member  84  having an inner bonding surface  86 , the second mount comprised a highly damped elastomer  88  between the second mount nonextensible frameside member  80  and the second mount nonextensible engineside member  84 , the highly damped elastomer  88  bonded to the second mount nonextensible frameside member outer bonding surface  82  and the second mount nonextensible engineside member inner bonding surface  86 , the highly damped elastomer  88  having a tan delta of at least 0.2. The system  50  preferably includes the third engine mount  78  disposed between the equipment engine-vibrating source  12  and the equipment frame  10 . 
     The invention preferably includes the engine mount  52  for mounting a vibrating source equipment engine  12  to an equipment frame  10 . The equipment engine mount  52  is comprised of the equipment engine mount nonextensible inner member  54 , the engine mount nonextensible inner member  54  having an outer bonding surface  56 , the engine mount  52  comprised of the equipment engine mount nonextensible outer member  58 , the equipment engine mount nonextensible outer member  58  having an inner bonding surface  60 , the equipment engine mount  52  comprised the intermediate elastomer  62  between the equipment engine mount nonextensible inner member  54  and the equipment engine mount nonextensible outer member  58 , the equipment engine mount intermediate elastomer  62  bonded to the equipment engine mount nonextensible inner member outer bonding surface  56  and the equipment engine mount nonextensible outer member inner bonding surface  60 , the equipment engine mount intermediate elastomer  62 , the equipment engine mount nonextensible inner member  54 , and the equipment engine mount nonextensible outer member  58  forming a liquid housing cavity  64 , the liquid housing cavity  64  containing a first variable volume liquid chamber  66  proximate the equipment engine mount nonextensible inner member  54  and a second variable volume liquid chamber  68 , the second variable volume liquid chamber  68  distal from the equipment engine mount nonextensible inner member  54 , the first variable volume liquid chamber  66  segregated from the second variable volume liquid chamber  68  by a nonextensible rigid nonelastomer inertial liquid track member  70 , 70 ′ having an outer perimeter tuned liquid track path  72 , 72 ′ proximate its outer perimeter. Preferably the outer perimeter tuned liquid track path  72  is formed by the track member perimeter groove  74  and the outer member  58  and the bonded elastomer  62 , preferably the perimeter groove  74  is a curved circular outer perimeter groove, preferably with a D shaped flat-curved cross section, preferably with the flat side of the D on the bonded elastomer  62  outer member  58  side. Preferably the outer perimeter tuned liquid track path  72 ′ is formed by the track member perimeter groove  74 ′ and the outer member  58  and the bonded elastomer  62 , preferably the perimeter groove  74 ′ is a curved circular outer perimeter groove, preferably with a D shaped flat-curved cross section, preferably with the flat side of the D on the bonded elastomer  62  outer member  58  side. The first variable volume liquid chamber  66  and the second variable volume liquid chamber  68  filled with a mount liquid  76 , the first variable volume liquid chamber  66  in liquid communication with the second variable volume liquid chamber  68  through the outer perimeter liquid track path  72 , 72 ′, wherein a movement of the equipment engine mount nonextensible inner member  54  relative to the equipment engine mount nonextensible outer member  58  plungers the mount liquid  76  in the equipment variable volume liquid chamber  66 , and preferably moves the mount liquid  76  in the outer perimeter tuned liquid track path with the engine mount  52  having a frequency notch band with a center frequency X Hz (X±5 Hz). Preferably the mount  52  has a frequency notch band in the range from W (X−5) Hz to Y (X+5) Hz. Preferably the frequency notch band is centered about X with a band width of about 10 Hz. 
     It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit and scope of the invention. Thus, it is intended that the present invention cover the modifications and variations of this invention provided they come within the scope of the appended claims and their equivalents.