Patent Publication Number: US-2023150445-A1

Title: Compressed-air module system for a utility vehicle

Description:
The present disclosure relates to a compressed-air module system for a utility vehicle having a plurality of compressed-air components and a carrying apparatus. 
     US 2007/0234904 A1 discloses a dry compressed-air module for fastening to the frame of a utility vehicle. The dry compressed-air module consists of a housing, an air compressor, an air dryer, and a reservoir. The air compressor, the air dryer, and the reservoir are arranged in a housing and can be fastened together with the housing to the frame. The air dryer is supplied with compressed air from the air compressor and the reservoir is supplied with dry compressed air from the air dryer. The vessel is capable of storing the dry compressed air and of supplying same to the utility vehicle. 
     DE 195 38 339 A1 discloses an apparatus for generating and keeping compressed air ready for supplying compressed-air consumers in motor vehicles. The apparatus has a drive device, a compression apparatus, and a pressure store. The drive device, the compression apparatus, and the pressure store are combined to form a unit having a common, compact housing and are connected to one another without pressure lines. 
     EP 0 926 034 A2 discloses an apparatus for installing compressed-air vessels on a vehicle frame, with a holding device which is fastenable to the vehicle frame and which is provided on its circumference with cutouts for receiving the compressed-air vessels in a parallel arrangement, and with tensioning straps which are guided around the compressed-air vessels and hold the latter in the receptacles. 
     The present disclosure is based on the object of creating an alternative and/or improved technique for constructing a compressed-air module. 
     The object is achieved by the features of the independent claims. Advantageous developments are indicated in the dependent claims and the description. 
     One aspect of the present disclosure relates to a compressed-air module system for a utility vehicle, preferably a lorry. The modular system has a plurality of compressed-air components and a carrying apparatus which can be attached to a vehicle frame of the utility vehicle. The carrying apparatus and at least some (e.g. a first) of the plurality of compressed-air components can be combined to form a first compressed-air module, wherein the first compressed-air module has an air compressor, at least one compressed-air reservoir, and a compressed-air conditioning means of the plurality of compressed-air components. The carrying apparatus and at least some (e.g. a second) of the plurality of compressed-air components can be combined to form a second compressed-air module, wherein the second compressed-air module has the at least one compressed-air vessel and the compressed-air conditioning means and, instead of the air compressor, at least one further compressed-air vessel of the plurality of compressed-air components. 
     The modular system can afford the advantage that two compressed-air modules for different applications can be formed with a very large number of identical parts (e.g. carrying apparatus, at least one compressed-air vessel, compressed-air conditioning means). For example, the first compressed-air module can be used with the air compressor for utility vehicles operated by electric motor, and the second compressed-air module can be used with the further compressed-air vessel, instead of the air compressor, for utility vehicles operated by internal combustion engine. It is namely possible that the utility vehicle operated by internal combustion engine already has an air compressor integrated on the engine block of the internal combustion engine, and therefore the second compressed-air module does not require such an air compressor. In the modular system, it is therefore preferably provided that the air compressor is interchangeable with a compressed-air store. The compressed-air module can therefore be adapted to the type of drive of the vehicle. The external dimensions and all of the other (compressed-air) components can remain identical. This can have the advantage that the compressed-air module can always be used as a unit across all vehicle variants. This has a decisive influence on the development of the vehicles since the starting point can always be from a compressed-air module, and new variants do not have to be created for the individual types of drive. Production also profits from this disclosure since the mounting dimensions and the interfaces are always identical. An entire vehicle fleet consisting of utility vehicles operated by electric motor and by internal combustion engine can therefore be equipped with only two different compressed-air modules which also have a large number of identical parts since they are derived from the same modular system. This permits savings in many respects, e.g. development costs, production costs, installation costs, etc. 
     The at least one compressed-air vessel and the compressed-air conditioning means are preferably arranged identically in the first compressed-air module and in the second compressed-air module. 
     Preferably, the air compressor in the first compressed-air module is arranged identically to the at least one further compressed-air vessel in the second compressed-air module. 
     In one exemplary embodiment, the carrying apparatus is designed to carry the plurality of compressed-air components in a plurality of, preferably two, vertically spaced-apart planes. This can permit an advantageous use of construction space. In addition, it can be provided, for example, that one of the planes, e.g. an upper plane, is used for the air compressor and the at least one further compressed-air vessel, i.e. the interchangeable compressed-air components. A further plane, e.g. a lower plane, can preferably be used for the compressed-air components which are identical across the first and second compressed-air module (compressed-air conditioning means, at least one compressed-air vessel). This can simplify, for example, an unambiguous assignability of the compressed-air modules. 
     In a further exemplary embodiment, the carrying apparatus is designed to at least partially support the plurality of compressed-air components from below and to at least partially carry same in a suspended manner below the carrying apparatus. Such an arrangement uses only little construction space for the carrying apparatus and, in addition, makes it possible to combine a plurality of compressed-air components in the compressed-air modules. 
     In a further exemplary embodiment, the air compressor is supported, preferably by means of elastic damping elements, on the carrying apparatus. For example, decoupling in terms of vibration can therefore be permitted. 
     In a further exemplary embodiment, the at least one further compressed-air vessel is supported, preferably rigidly, on the carrying apparatus. 
     In one embodiment, the at least one compressed-air vessel and/or the compressed-air conditioning means are/is carried in a suspended manner below the carrying apparatus. 
     In a further embodiment, the at least one compressed-air vessel comprises a first compressed-air vessel and a second compressed-air vessel. 
     In one development, the first compressed-air vessel and/or the second compressed-air vessel in the first compressed-air module have/has a different function than in the second compressed-air module. It is therefore possible to react to the respective utility-vehicle-specific requirements (e.g. pneumatically actuated transmission—yes/no) and, for example, also take into consideration that the second compressed-air module has the further compressed-air vessel. 
     In a further embodiment, the first compressed-air vessel is arranged, preferably centrally, between the second compressed-air vessel and the compressed-air conditioning means, preferably in a suspended manner on the carrying apparatus. This can make it possible for the compressed-air conditioning means to be arranged in an easily accessible manner on the outside of the carrying apparatus, which permits simple exchange of worn parts and an easy connection of fluid lines to the compressed-air conditioning means. 
     In a further embodiment, the first compressed-air vessel protrudes beyond the carrying apparatus (e.g. towards the vehicle or under the vehicle frame) with respect to a transverse axis of the carrying apparatus (e.g. parallel to a transverse axis of the vehicle frame or of the utility vehicle). Therefore, unused construction space below the vehicle frame can be used and additional construction space created for the compressed-air conditioning means and the second compressed-air vessel. 
     In one embodiment variant, in the case of the first compressed-air module, the first compressed-air vessel is assigned or can be assigned to a first brake circuit of the utility vehicle and/or the second compressed-air vessel is assigned or can be assigned to a second brake circuit of the utility vehicle. 
     In a further embodiment variant, in the case of the second compressed-air module, the first compressed-air vessel is assigned or can be assigned to the first brake circuit of the utility vehicle, the second compressed-air vessel is assigned or can be assigned to a pneumatic secondary consumer (e.g. transmission control or air suspension, etc.) of the utility vehicle, and/or the at least one further compressed-air vessel is assigned or can be assigned to the second brake circuit. 
     In a further embodiment variant, the carrying apparatus has a first, e.g. L-shaped, carrier and a second, e.g. L-shaped, carrier, which carriers are preferably connected to each other by at least one transverse element (e.g. transverse strut, plate). The first carrier and the second carrier are preferably designed as identical parts, and/or a plurality of transverse elements which are designed as identical parts are included. This can reduce the variation in the parts and the production costs and can also prevent erroneous installations. The L-shaped carriers can provide a large amount of construction space for arranging compressed-air components, e.g. above and below the L-shaped carriers. 
     In one exemplary embodiment, the carrying apparatus, preferably a horizontal limb of an L-shaped carrier of the carrying apparatus, has at least one, preferably rectangular, through hole through which a tensioning strap which carries a pressure vessel of the at least one pressure vessel is tensioned. A receptacle for the tensioning strap can therefore be directly integrated in the carrying apparatus. It is not necessary to fasten a separate holder for fastening the tensioning strap to the carrying apparatus. 
     In one development, the at least one through hole is rounded or chamfered in the region of contact with the tensioning strap. Alternatively or additionally, for example, a lower edge of the carrying apparatus can be rounded or chamfered in the region of contact with the pressure vessel. A risk of damage to the tensioning strap and the pressure vessel can therefore be reduced. 
     In a further exemplary embodiment, the carrying apparatus has at least one collar portion for placing flat on the vehicle frame, wherein the at least one collar portion is preferably reinforced by, preferably welded-on, supporting ribs. 
     In a further exemplary embodiment, the air compressor has an exchangeable filter, and the carrying apparatus has a reinforcing rib (e.g. diagonal strut and/or tension bar) with a cutout (e.g. depression, recess, notch, hole). The cutout creates an installation space which is required for exchanging the exchangeable filter, wherein the exchangeable filter should inevitably be guided through the cutout as it is being removed or fitted. 
     In a further exemplary embodiment, the compressed-air conditioning means has an air dryer, a pressure regulator, and/or a multi-circuit protection valve, preferably a four-circuit protection valve, preferably as an integrated device. 
     It is pointed out that the first compressed-air module disclosed herein and the second compressed-air module disclosed herein are also in each case disclosed individually and independently of the compressed-air module system. 
     A further aspect of the present disclosure relates to a utility vehicle driven by electric motor, preferably lorry, having the first compressed-air module which can be combined from the compressed-air module system, as disclosed herein. 
     The first compressed-air module is preferably fitted on a vehicle frame, e.g. ladder frame, of the utility vehicle, e.g. on the outside and/or between a front axle and a rear axle of the utility vehicle. 
     A further aspect of the present disclosure relates to a utility vehicle driven by an internal combustion engine, preferably lorry, having the second compressed-air module which can be combined from the compressed-air module system, as disclosed herein. 
     The second compressed-air module is preferably fitted to a vehicle frame, e.g. ladder frame, of the utility vehicle, e.g. on the outside and/or between a front axle and a rear axle of the utility vehicle. 
     The utility vehicle driven by an internal combustion engine particularly preferably has an internal combustion engine in which an air compressor is incorporated, preferably integrated. 
    
    
     
       The previously described preferred embodiments and features of the present disclosure can be combined with one another as desired. Further details and advantages of the present disclosure will be described below with reference to the attached drawings, in which: 
         FIG.  1    shows a top view of a vehicle frame of a utility vehicle; 
         FIG.  2    shows a perspective view of an exemplary carrying apparatus of a compressed-air module; 
         FIG.  3    shows a perspective view of an exemplary compressed-air module; 
         FIG.  4    shows a side view of the exemplary compressed-air module; 
         FIG.  5    shows a further side view of the exemplary compressed-air module; 
         FIG.  6    shows a perspective view of a further exemplary compressed-air module; 
         FIG.  7    shows a side view of the further exemplary compressed-air module; 
         FIG.  8    shows a further side view of the further exemplary compressed-air module; and 
         FIG.  9    shows a perspective view of a holder of the exemplary carrying apparatus for holding a compressed-air conditioning means. 
     
    
    
     The embodiments shown in the figures at least partially coincide, and therefore similar or identical parts are provided with the same reference signs and, for the explanation thereof, reference is also made to the description of the other embodiments or figures in order to avoid repetitions. 
       FIG.  1    shows a (vehicle) frame  10  of a utility vehicle. The utility vehicle is preferably in the form of a lorry. The frame  10  is in the form of a ladder frame. The frame  10  has two longitudinal members  12 . The two longitudinal members  12  run substantially parallel to each other. The two longitudinal members  12  are connected to each other by means of a plurality of crossmembers  14 . It is also possible for the frame  10  to be, for example, in the form of a lattice frame, rather than a ladder frame. The frame  10  can be supported on a plurality of axles of the utility vehicle, for example on a front axle  16  and a rear axle  18 , as is illustrated in  FIG.  1   . 
     Depending on the design, the utility vehicle can be, for example, a utility vehicle driven by electric motor or a utility vehicle driven by an internal combustion engine. The drive device  20  (optionally with transmission, power electronics, etc.) can be arranged, for example, in a front region of the frame  10 . The drive device  20  is, for example, connected in terms of drive to a propeller shaft  22  for driving the rear axle  18 . It goes without saying that drive concepts without a central drive device are included by the present disclosure, for example wheel hub motors, motors close to the wheels, etc. 
     The frame  10  carries a compressed-air module  24 . The compressed-air module  24  is preferably attached to an outer side of the frame  10 , particularly preferably to the outer side of one of the longitudinal members  12  of the frame  10 . Particularly advantageous in terms of installation and construction space, the compressed-air module  24  is arranged, for example, between the front axle  16  and the rear axle  18 . The compressed-air module  24  combines a multiplicity of compressed-air-related functions in itself, as is described herein in more detail by way of example. 
     A particular feature of the present disclosure consists in that the compressed-air module  24  can be combined or assembled from a modular system. At least two different variants of the compressed-air module  24  can preferably be provided by means of the modular system. The first variant of the compressed-air module  24  (also called first compressed-air module  24 A herein) is provided for use in a utility vehicle driven by electric motor. The second variant of the compressed-air module  24  (also called second compressed-air module  24 B herein) is provided for use in a utility vehicle driven by an internal combustion engine. Details in this regard will be herein explained, for example, further on with reference to  FIGS.  3  to  8   . 
       FIG.  2    shows an exemplary carrying apparatus  26  of the compressed-air module  24  from  FIG.  1   . The carrying apparatus  26  can provide the particular characteristic that it is usable as an identical part for a plurality of compressed-air modules  24  which can be combined from the modular system. 
     The carrying apparatus  26  is designed to be fastened to the frame  10  of the utility vehicle. The carrying apparatus  26  can have, for example, two carriers  28 , two transverse struts  30 , and optionally two reinforcing struts  32 . It is possible for the carrying apparatus to have a different number of carriers  28 , transverse struts  30 , and/or reinforcing struts  32 . In the case of a plurality of carriers  28 , in the case of a plurality of transverse struts  30 , and/or in the case of a plurality of reinforcing struts  32 , they can each be designed as identical parts. 
     The carriers  28  are preferably designed as L-shaped carriers. Each carrier  28  can have a vertical limb  34  and a horizontal limb  36 . The carriers  28  can be designed, for example, as sheet-metal drawn parts (e.g. deep-drawn part) or as welded structures. 
     The vertical limb  34  of the carrier  28  is fastened to the frame  10 , for example by means of releasable screw connections. The vertical limb  34  can have, for example, a U-shaped cross section. The vertical limb  34  can have a collar portion  38 . The collar portion  38  can be reinforced by supporting ribs  40  which are preferably welded into place. The collar portion  38  can have through holes which serve for fastening the carrier  28  to the frame  10 . 
     The horizontal limb  36  of the carrier  28  is designed to carry a plurality of compressed-air components. The carrier  28  can carry compressed-air components in a plurality of planes. For example, compressed-air components can be supported above the horizontal limbs  36 . Compressed-air components can also be carried in a suspended manner on the horizontal limbs  36 . The horizontal limbs  36  of the carriers  28  can be connected to one another by the transverse struts  30 . For example, the transverse struts  30  can be welded onto the carriers  28 . The transverse struts  30  can likewise carry compressed-air components. 
     The horizontal limb  36  can have a U-shaped cross section. The horizontal limb  36  preferably has at least one, preferably rectangular, through hole  42 . Through the through hole  42 , it is possible for a tensioning strap (not illustrated in  FIG.  2   ) to be guided, with which a compressed-air component (e.g. compressed-air vessel) can be carried, preferably in a suspended manner below the carrier  28 . Preferably, a plurality of through holes  42  for a plurality of tensioning straps can be included. Preferably, mutually aligned through holes  42  in the two horizontal limbs  36  for the passage of the same tensioning strap can also be included. A plurality of connection points for the same tensioning strap can therefore be created. 
     The reinforcing struts  32  can connect the horizontal limb  36  and the vertical limb  34  to each other. The reinforcing struts  32  serve as tension bars and, for example, can bring about a uniform introduction of force into the limbs  34  and the frame  10 . The reinforcing struts can extend diagonally between the limbs  34  and  36 . 
     Optionally, at least one holder  44  for holding one or more compressed-air components can also be attached to the carrier  28 . The holder  44  is fastened in a suspended manner to the carrier  28 . The holder  44  is arranged below the carrier  28 . 
       FIGS.  3  to  5    show the first compressed-air module  24 A.  FIGS.  6  to  8    show the second compressed-air module  24 B. The two compressed-air modules  24 A,  24 B can be combined from the modular system, with the carrying apparatus  26  being used as an identical part. 
     The two compressed-air modules  24 A,  24 B have a plurality of compressed-air components which are partially used as identical parts. It is possible for at least one compressed-air component used as an identical part in the case of the first compressed-air module  24 A and in the case of the second compressed-air module  24 B to have a different function. 
     The two compressed-air modules  24 A,  24 B have a (first) compressed-air vessel  46 , a (second) compressed-air vessel  48 , and a compressed-air conditioning means  50  with, for example, a compressed-air valve device  52  and an air dryer  54 . The first compressed-air module  24 A additionally has an air compressor  56 . Instead of the air compressor  56 , the second compressed-air module  24 B has a (third) compressed-air vessel  58 . 
     The first compressed-air module  24 A is intended for use with a utility vehicle driven by an electric motor. The second compressed-air module  24 B is intended for use with a utility vehicle driven by an internal combustion engine. The utility vehicle which is driven by an internal combustion engine can namely already have an air compressor integrated in its drive device  20 . For example, a compressor housing can be cast together with an engine block of the internal combustion engine (=drive device  20 ). It is therefore not required for the second compressed-air module  24 B to have an air compressor. In contrast thereto, in the case of the utility vehicle driven by an electric motor, an air compressor cannot be integrated in the drive device  20 . It is therefore preferred that the first compressed-air module  24 A has the air compressor  56 . In the case of the second compressed-air module  24 B, the compressed-air vessel  58  can be arranged in place of an air compressor. The arrangement of the compressed-air vessel also makes sense for construction space reasons since there is a relatively large amount of construction space in the region in which the air compressor  56  is arranged in the case of the first compressed-air module  24 A. By means of the arrangement of the compressed-air vessel, further compressed-air-related functions can be integrated in the second compressed-air module  24 B. 
     The compressed-air vessel  46  is structurally identical and arranged identically in the case of the first compressed-air module  24 A and in the case of the second compressed-air module  24 B. In both compressed-air modules  24 A,  24 B, the compressed-air vessel  46  can be assigned to a brake circuit of the utility vehicle, for example to a front-axle brake circuit. The compressed-air vessel  46  is arranged in a suspended manner below the carrying apparatus  26 , preferably centrally. A plurality of tensioning straps  60  can carry the compressed-air vessel  46  centrally between the carriers  28  by way of the opposite through holes  42  (see  FIGS.  4  and  7   ) in the horizontal limbs  36 . The compressed-air vessel  46  can be, for example, a 40 litre compressed-air vessel. 
     In order to prevent damage to the tensioning straps  60 , the, preferably rectangular, through holes  42  can be chamfered or rounded, preferably in portions which lie directly on the tensioning straps  60 . In order to prevent damage to the compressed-air vessel  46 , a lower edge of the limb  36  that is in contact with the compressed-air vessel  46  can be chamfered or rounded. 
     The compressed-air vessel  46  can be arranged with an end portion directly below the longitudinal member  12  in order, for example, to create more construction space for the compressed-air vessel  48  and the integrated compressed-air conditioning means  50  (see  FIGS.  5  and  8   ). In other words, the compressed-air vessel  46  protrudes beyond the carrying apparatus  26  with respect to a transverse axis of the carrying apparatus  26 . The compressed-air vessel  48  and the compressed-air conditioning means  50  can be arranged on opposite sides of the compressed-air vessel  46 . 
     The compressed-air vessel  48  is structurally identical and arranged identically in the case of the first compressed-air module  24 A and in the case of the second compressed-air module  24 B. However, the compressed-air vessel  48  can carry out a different function in the case of the first compressed-air module  24 A than in the case of the second compressed-air module  24 B. For example, the compressed-air vessel  48  in the case of the first compressed-air module  24 A can be assigned to a second brake circuit of the utility vehicle, for example to a rear axle brake circuit. By contrast, in the case of the second compressed-air module  24 B, the compressed-air vessel  48  can be assigned, for example, to a pneumatic transmission control for a transmission, for example automatic transmission. The compressed-air vessel  48  can also be assigned, for example, to another pneumatic secondary consumer, e.g. to an air suspension of the utility vehicle. The compressed-air vessel  48  is arranged in a suspended manner below the carrying apparatus  26 , for example by means of a tensioning strap (not illustrated) on a holder which is fastened to the carrier  28 . The compressed-air vessel  48  can be, for example, an 8 litre compressed-air vessel. 
       FIG.  9    shows the compressed-air conditioning means  50  in greater detail. The compressed-air conditioning means  50  is structurally identical and arranged identically in the case of the first compressed-air module  24 A and in the case of the second compressed-air module  24 B. The air dryer  54  is designed to dehumidify air. The air dryer  54  can have an exchangeable cartridge. The compressed-air valve device  52  can have, for example, a pressure regulator, nonreturn valves, and a multi-circuit protection valve for the different compressed-air circuits, preferably brake circuits, of the utility vehicle. 
     The compressed-air conditioning means  50  is fastened in a suspended manner to the carrying apparatus  26  by means of the holder  44 . The compressed-air conditioning means  50  is arranged below the carrying apparatus  26 . The holder  44  can be connected to the compressed-air conditioning means  50  at a plurality of connection points. The holder  44  is furthermore connected to the horizontal limbs  36  at a plurality of connection points. The compressed-air conditioning means  50  can therefore be securely held from a plurality of sides. 
     The air compressor  56  of the first compressed-air module  24 A compresses air to form compressed air. The air compressor  56  can have a compressor part and a drive part. The air compressor  56  is carried on the horizontal limbs  36  and the transverse struts  30 . The air compressor  56  is arranged above the horizontal limbs  36  and the transverse struts  30 . The air compressor  56  is preferably supported on the carrying apparatus  26  in a damped manner by means of elastic damping elements  62 . The air compressor  56  can be supported by the damping elements  62 , for example by means of a four-point mounting. The damping elements  62  can decouple the air compressor  56  in terms of vibration from the carrying apparatus  26  and therefore from the frame  10 . The air compressor  56  can be oriented in such a manner that the solid cooling fins of the drive part of the air compressor  56  are mounted towards the outside. The solid drive part can therefore carry out a certain protective function. 
     The air compressor  56  of the first compressed-air module  24 A can have an exchangeable filter  64 , preferably an air filter or an oil filter. In order to create sufficient installation space for exchanging the filter  64 , the reinforcing strut  32  can have a cutout  66 , e.g. in the form of a notch, depression or a through hole. For the exchange, the filter  64  can be guided through or along the cutout  66 , e.g. parallel to the longitudinal axis of the utility vehicle (cf.  FIG.  5   ). 
     The compressed-air vessel  58  of the second compressed-air module  24 B is carried on the horizontal limbs  36  and the transverse struts  30 , e.g. by means of intermediately arranged holders  68  which are supported on the transverse struts  30 . The compressed-air vessel  58  can be fastened to the holders  68  by means of tensioning straps (not illustrated). The compressed-air vessel  58  is arranged above the horizontal limbs  36  of the transverse strut  30 . The compressed-air vessel  58  can expediently be assigned to a rear axle brake circuit of the utility vehicle. The compressed-air vessel  58  can be, for example, a 40 litre compressed-air vessel. 
     The present disclosure is not restricted to the preferred exemplary embodiments described above. On the contrary, a multiplicity of variants and modifications are possible which likewise make use of the inventive concept and therefore fall within the scope of protection. In particular, the present disclosure also claims protection for the subject matter and the features of the dependent claims irrespective of the claims referred to. In particular, the individual features of independent claim  1  are in each case disclosed independently of one another. In addition, the features of the dependent claims are also disclosed independently of all of the features of independent claim  1 . 
     LIST OF REFERENCE SIGNS 
     
         
           10  Frame 
           12  Longitudinal member 
           14  Crossmember 
           16  Front axle 
           18  Rear axle 
           20  Drive device 
           22  Propeller shaft 
           24  Compressed-air module 
           24 A First compressed-air module 
           24 B Second compressed-air module 
           26  Carrying apparatus 
           28  Carrier 
           30  Transverse strut 
           32  Reinforcing strut 
           34  Vertical limb 
           36  Horizontal limb 
           38  Collar portion 
           40  Supporting ribs 
           42  Through hole 
           44  Holder 
           46  Compressed-air vessel 
           48  Compressed-air vessel 
           50  Compressed-air conditioning means 
           52  Compressed-air valve device 
           54  Air dryer 
           56  Air compressor 
           58  Compressed-air vessel 
           60  Tensioning strap 
           62  Damping element 
           64  Filter 
           66  Cutout 
           68  Holder