Abstract:
A hydraulic power generation system which is monitored and controlled by means of a computer, with the ability to have said hydraulic power generation system&#39;s hydraulic characteristics and computer easily modified so as be completely customizeable, both in terms of operation and interface.

Description:
FEDERALLY SPONSORED RESEARCH  
         [0001]    Not Applicable  
         SEQUENCE LISTING OR PROGRAM  
         [0002]    Program listing for computer enclosed on compact disk in duplicate  
         BACKGROUND—FIELD OF INVENTION  
         [0003]    This invention relates to power generation systems—in particular, hydraulic power generaton systems controlled by a digital computer.  
         BACKGROUND—DESCRIPTION OF PRIOR ART  
         [0004]    In the field of hydraulic power generation systems, it has often been difficult to change the characteristics of the system.  
           [0005]    Characteristics that have been difficult to change in the past include:  
           [0006]    (a) Changing from an intermitent to a continuous flow application.  
           [0007]    Intermitent operation in the context of the present invention is defined as having the electrical motor(s) in the system remain idle until needed to supply power to the hydraulic pump(s). This has the advantage of not forcing the motor(s) to run continuously, which keeps the system from potentially overheating or consuming unneeded power during idle periods.  
           [0008]    Continuous operation in the context of the present invention is defined as having the electrical motor(s) in the system continuously running and therefore always able to immediately provide power to the hydraulic pump(s) in the system. This has the advantages of more responsive system control, removal of electrical motor startup spikes, and the capability for less expensive motors to be used.  
           [0009]    The present invention can be easily switched between these two modes of operation via an external control communicating with the computer.  
           [0010]    (b) High motor startup spikes.  
           [0011]    Motor spikes become increasingly detrimental to the motor as a result of increasing load at the time of startup. The motor will draw considerably more power than normal in order to try and bring the motor to an acceptable rotation speed. This has the cumulative effect of creating inefficiency through heat loss, excessive power draw at motor startup, and eventually harm to the motor.  
           [0012]    The present invention negates this problem by constantly monitoring the state of the motor(s), pump(s), and load(s) in the hydraulic system. Accordingly, a soft start—defined in the context of the present invention as a period of time wherein the motors are able to build up a higher rotational speed without being under load—is used, with the time duration of said soft start based on monitored values from the motor(s), pump(s) and load(s). This reduces power consumption during motor startup dramatically.  
           [0013]    (c) Easily adjustable variable flow rate.  
           [0014]    In the past, other hydraulic systems, such as U.S. Pat. No. 4,369,625 to Izumi/Hitachi, have often relied on expensive proportionally controlled hydraulic means to alter their flow rates. U.S. Pat. No. 5,735,506 to Warnan, achieves a variable flow rate through mechanically activated means, but is susceptible to oil viscosity.  
           [0015]    In reference to the present invention, the flow rate is adjusted by means of a simplified network of valves. By activating different combinations of valves, the desired flow rate can be easily achieved. This is a more robust, simplified, and cost effective means of achieving flow rate adjustments.  
           [0016]    In the context of the present invention, this simplified means of flow adjustment is referred to as “load sense”.  
           [0017]    (d) Inability to easily adjust hydraulic behavior.  
           [0018]    Previously, hydraulic power systems have lacked the ability to easily alter their behavior. The hydraulic fluid pressure settings, the motor and pump startup characteristics, power drain behavior, and switching between continuous and intermitent operation would all require major changes to the system, often requiring considerable downtime and expenses.  
           [0019]    The present invention avoids these downfalls by being completely programmable and customizable by means of a computer control. Hydraulic, electronic, time and other variables can all be changed with ease to provide entirely different characteristics to the system. For example, power drain can be reduced by increasing the period of soft start or entering continuous operation mode, performance can be dramatically improved by simply altering load sense parameters, and completely different hydraulic power needs can be met simply by monitoring new inputs.  
         OBJECTS AND ADVANTAGES  
         [0020]    Besides and in addition to the objects and advantages over prior hydraulic power generation system described above, several objects and advantages of the current invention are:  
           [0021]    (a) To provide a hydraulic power generation system with the capability to monitor any parameter of its operation—these may include, but are not limited to:  
           [0022]    hydraulic fluid pressure  
           [0023]    status of power source  
           [0024]    status of valves  
           [0025]    status of solenoid coils  
           [0026]    temperature of system  
           [0027]    level of hydraulic fluid  
           [0028]    abnormalities or problems present in any stage of the hydraulic system  
           [0029]    time;  
           [0030]    (b) To provide a hydraulic power generation system with the ability to easily alter any aspect of said system, be it the behavior of the computer, a part of the hydraulic system itself, etc., to allow for flexible and easily modifiable hydraulic and electronic characteristics;  
           [0031]    (c) To provide a hydraulic power generation system with the ability to adapt to any input means—such as but not limited to:  
           [0032]    an operator controlled input device such as a control stick  
           [0033]    a control panel provided on the hydraulic system itself  
           [0034]    remote computer operation;  
           [0035]    (d) To provide a hydraulic power generation system with the ability to adapt to a variety of different power sources;  
           [0036]    (e) To provide a hydraulic power generation system which is portable and therefore easy to transport and maintain;  
           [0037]    (f) To provide a hydraulic power generation system with the means to record and report the time said system has been in use;  
           [0038]    (g) To provide a hydraulic power generation system with the capability to be adapted to its surroundings—physical size, structural integrity, weight, fastening means, and heat and noise characteristics are all modifiable to any requirements;  
           [0039]    (h) To provide a hydraulic power generation system which encapsulates and hides the complex behavior of an advanced hydraulic system with a simple interface;  
           [0040]    (i) To provide a hydraulic power generation system which is adaptable to a variety of different applications.  
           [0041]    Further objects and advantages will become apparent in the insuing description and drawings.  
         SUMMARY  
         [0042]    The present invention consists of a hydraulic power generation system which is monitored and controlled by means of a computer, with the ability to have said hydraulic power generation system&#39;s hydraulic characteristics and computer easily modified so as be completely customizeable, both in terms of operation and interface. 
       
    
    
     DRAWINGS  
     Drawing Figures  
       [0043]    In the drawings, different views of the same part have the same number but different alphabetic suffixes.  
         [0044]    [0044]FIG. 1 shows a complete isometric view of a preferred embodiment of the present invention.  
         [0045]    [0045]FIG. 2 shows an isometric view of the same embodiment of said present invention as FIG. 1 with the top components (main power enclosure, hydraulic fluid reservoir, electric junction enclosure, and control panel) and top half of the support structure removed for clarity.  
         [0046]    [0046]FIGS. 3A and 3B show two different isometric views of the electric junction enclosure.  
         [0047]    [0047]FIG. 4 shows an isometric view of the hydraulic fluid reservoir.  
         [0048]    [0048]FIG. 5 shows an isometric view of the support structure with all the other components removed.  
         [0049]    [0049]FIG. 6 shows an isometric view of the control panel.  
         [0050]    [0050]FIGS. 7A and 7B show two different isometric views of the hydraulic manifold.  
         [0051]    [0051]FIG. 8 shows an isometric view of the hydraulic pump &amp; motor assembly.  
         [0052]    [0052]FIGS. 9A and 9B show two different isometric views of the main power enclosure.  
         [0053]    [0053]FIG. 10 shows a hydraulic schematic of a preferred embodiment of the present invention. 
     
    
     REFERENCE NUMERALS IN DRAWINGS  
       [0054]    [0054] 2  Main Power Enclosure  
         [0055]    [0055] 4  Control Panel  
         [0056]    [0056] 6  Hydraulic Pump &amp; Motor Assembly  
         [0057]    [0057] 8  Hydraulic Manifold  
         [0058]    [0058] 10  Hydraulic Fluid Reservoir  
         [0059]    [0059] 12  Electric Junction Enclosure  
         [0060]    [0060] 14  Support Structure  
         [0061]    [0061] 20  Hydraulic Fluid Return Line  
         [0062]    [0062] 22  Case Drain Line  
         [0063]    [0063] 24  Load Sense Line  
         [0064]    [0064] 26  Suction Line  
         [0065]    [0065] 28  Primary Electronic Junction Enclosure Connectors  
         [0066]    [0066] 30  Main Electrical Input Port  
         [0067]    [0067] 32  Additional Electronic Junction Enclosure Connectors  
         [0068]    [0068] 34  Hydraulic Fluid Filter Cap  
         [0069]    [0069] 36  Return Line Filter Input  
         [0070]    [0070] 38  Clog Filter Gauge  
         [0071]    [0071] 40  Suction Connector  
         [0072]    [0072] 42  Magnetic Plug Port  
         [0073]    [0073] 44  Sight Level Gauge  
         [0074]    [0074] 46  Case Drain Return Port  
         [0075]    [0075] 48  Hydraulic Reservoir Vent  
         [0076]    [0076] 50  Emergency Shutdown Indicator  
         [0077]    [0077] 52  Programming and Remote Control Port  
         [0078]    [0078] 54  Control Panel Main Electrical Output  
         [0079]    [0079] 56  Control Panel Main Electrical Input  
         [0080]    [0080] 57  Computer  
         [0081]    [0081] 58  Control Panel Input Device  
         [0082]    [0082] 60  LCD Screen  
         [0083]    [0083] 62  Return Line Port  
         [0084]    [0084] 64  Load Sense Solenoid  
         [0085]    [0085] 66  Load Sense Flow Rate Regulator  
         [0086]    [0086] 68  Main Hydraulic Pressure Input  
         [0087]    [0087] 69  Load Sense Port  
         [0088]    [0088] 70  Primary Hydraulic Power Transmission Line  
         [0089]    [0089] 72  Alternate Hydraulic Power Transmission Line  
         [0090]    [0090] 74 A Directional Control Solenoid  
         [0091]    [0091] 74 B Directional Control Solenoid  
         [0092]    [0092] 75 A Pressure Transducer  
         [0093]    [0093] 75 B Pressure Transducer  
         [0094]    [0094] 76 A Directional Control Solenoid  
         [0095]    [0095] 76 B Directional Control Solenoid  
         [0096]    [0096] 78  Soft Start Solenoid  
         [0097]    [0097] 80  Pressure Relief Valve  
         [0098]    [0098] 82  Main AC Electrical Port  
         [0099]    [0099] 83  Electric Motor  
         [0100]    [0100] 84  Case Drain Port  
         [0101]    [0101] 85  Gearbox  
         [0102]    [0102] 86  Compensator Adjustment  
         [0103]    [0103] 87  Hydraulic Adapter Block  
         [0104]    [0104] 88  Load Sense Connector  
         [0105]    [0105] 90  Suction Port  
         [0106]    [0106] 92  Hydraulic Pressure Port  
         [0107]    [0107] 94  Gearbox Breather Vent  
         [0108]    [0108] 96  Main DC Power Input  
         [0109]    [0109] 98  Main AC power and External Control Input  
         [0110]    [0110] 100  Emergency Stop and On/Off Button  
         [0111]    [0111] 102  Main AC Power Output  
         [0112]    [0112] 104  Main D-C Power Output  
         [0113]    [0113] 106 A Pressure Transducer  
         [0114]    [0114] 106 B Pressure Transducer  
         [0115]    [0115] 108  Work Member  
         [0116]    [0116] 110 A Normally Closed Solenoid Operated One Way Check Valve  
         [0117]    [0117] 110 B Normally Closed Solenoid Operated One Way Check Valve  
         [0118]    [0118] 110 C Normally Closed Solenoid Operated One Way Check Valve  
         [0119]    [0119] 110 D Normally Closed Solenoid Operated One Way Check Valve  
         [0120]    [0120] 112  One Way Check Valve  
         [0121]    [0121] 114 A Normally Open Solenoid Operated One Way Check Valve  
         [0122]    [0122] 114 B Normally Open Solenoid Operated One Way Check Valve  
         [0123]    [0123] 120  Fluid Level Meter  
         [0124]    [0124] 122  Normally Closed Level Switch  
         [0125]    [0125] 124  Thermometer  
         [0126]    [0126] 128  Variable Displacement Pump  
         [0127]    [0127] 130  Hydraulic Fluid Filter  
       DETAILED DESCRIPTION  
     Description—FIGS.  1  and  2 —Preferred Embodiment  
       [0128]    A preferred embodiment of the present invention is illustrated in FIG. 1 (an isometric view of the entire embodiment) and FIG. 2 (isometric view of entire embodiment with top components removed).  
         [0129]    [0129] 2  shows the main power enclosure, which is responsible for distribution and regulation of electric power, distribution of control (both input and output), and power protection of the said invention. Said main power enclosure is further detailed in FIGS. 9A and 9B.  
         [0130]    Control panel  4  contains computer  57 , which is the primary source of control, driven by either user or by remote input. Control panel  4  is further detailed in FIG. 6.  
         [0131]    Hydraulic pump &amp; motor assembly  6  uses the controlled electrical power from main power enclosure  2  and converts it to hydraulic power. It&#39;s activation and operation is controlled by signals from the computer  57  within control panel  4 . The hydraulic pump &amp; motor assembly  6  is further detailed in FIG. 8.  
         [0132]    Hydraulic manifold  8  is responsible for distribution and monitoring of hydraulic power and is controlled by computer  57  within control panel  6 . FIGS. 1 and 2 show hydraulic manifold  8  with solenoid coils in place. The hydraulic manifold  8  is further detailed in FIGS. 7A and 7B, with the solenoid coils removed for clarity.  
         [0133]    Hydraulic fluid reservoir  10  contains the hydraulic fluid, filters foreign matter, and acts as an allocation point for hydraulic fluid. The hydraulic fluid reservoir is further detailed in FIG. 4.  
         [0134]    Electric junction enclosure  12  is responsible for the fusing of the control lines from the control panel  4  and acts as a junction point for the monitoring of hydraulic power from the hydraulic manifold,  8 . Electric junction enclosure  12  is further detailed in FIGS. 3A and 3B.  
         [0135]    Support stucture  14  acts as a means to interlink all components of the present invention, so as to allow the present invention to remain portable. Support structure  14  also serves as a means to fasten the present invention to it&#39;s surroundings and acts as a rigid, durable support member. FIG. 5 shows support structure  14  with all other components removed.  
         [0136]    Hydraulic fluid return line  20  acts as a means to return hydraulic fluid used in the hydraulic power generation process to the hydraulic fluid reservoir  10 . It connects the return line port  62  to the return line filter input,  36  so as to filter the hyraulic fluid before it re-enters the hydraulic fluid reservoir  10 .  
         [0137]    Case drain line  22  acts as a means to allow fluid which has escaped into the case of the variable displacement pump,  128 , back to the case drain return port,  46 .  
         [0138]    Load sense line  24  connects the load sense connector  88  to the load sense port  69 . Said load sense line acts as a means to control the displacement of the variable displacement pump  128 .  
         [0139]    Suction line  28  connects the suction port  90  to the suction connector  40  and acts as a means to transport hydraulic fluid from the hydraulic fluid reservoir  10 , to the variable displacement pump  128  to be converted to hydraulic power.  
       FIGS.  3 A and  3 B  
       [0140]    Primary electronic junction enclosure connectors  28  are connected to the hydraulic manifold  8 , fused inside the electronic junction enclosure  12 , and then further routed to the main electrical input port  30 , which connects to the control panel main electrical ouput  54 . Primary electronic junction enclosure connectors  28  and main electrical input port  30  facilitate communications between the hydraulic manifold  8  and computer  57  within control panel  4 .  
         [0141]    Additional electronic junction enclosure connectors  32  connect sight level gauge  44  to main electrical input port  30 , and further connect to control panel main electrical output  54 . This facilitates communication between hydraulic fluid reservoir  10  and computer  57  within control panel  4 .  
       FIG.  4   
       [0142]    Hydraulic fluid filter cap  34  acts as a seal to hydraulic fluid filter  130 .  
         [0143]    Return line filter input  36  connects to hydraulic fluid return line  20  and acts as a means to direct hydraulic fluid to be filtered before re-entering hydraulic fluid reservoir  10 .  
         [0144]    Clog filter gauge  38  monitors the internal pressure of hydraulic fluid filter  130 .  
         [0145]    Suction connector  40  connects to suction line  28  and acts as a means to transport hydraulic fluid to suction port  90 .  
         [0146]    Magnetic plug port  42  contains a magnet which acts as a means to collect and allow removal of metal contaminants. Magnetic plug port  42  also acts as a means to allow drainage of the hydraulic fluid in the present invention.  
         [0147]    Sight level gauge  44 , which contains normally closed level switch  122  and fluid level meter  120 , acts as a means to monitor hydraulic fluid level of the hydraulic fluid reservoir  10  and allows the user to visually inspect this level. Normally closed level switch  122  is connected to additional electronic junction enclosure connectors  32 , then further connected to main electrical input port  30 , and finally connected to control panel main electrical output  54 . This facilitates communications of fluid level between sight level gauge  44  and computer  57  within control panel  4 .  
         [0148]    Case drain return port  46  is connected to case drain line  22  and allows hydraulic fluid which has escaped from the case of variable displacement pump  128  to return to hydraulic fluid reservoir  10 .  
         [0149]    The hydraulic reservoir vent  48  acts as a means to maintain pressure equilibrium between the atmosphere and the interior of hydraulic fluid reservoir  10 .  
       FIG.  6   
       [0150]    Emergency shutdown indicator  50  is connected to control panel  4  and acts as a means to indicate to the user of the present invention that a critical error has occurred.  
         [0151]    Programming and remote control port  52  acts both as a interface to allow programming of control panel  4  and as a means to allow an interface with a remote control input device.  
         [0152]    Control panel main electrical output  54  is connected to main electrical input port  30 .  
         [0153]    Control panel main electrical input  56  is connected to main DC power output  102 .  
         [0154]    Computer  57  is the main source of control for the present invention. It controls all electical outputs, including electric motor  83 , directional control solenoids  74 A,  74 B,  76 A,  76 B, soft start solenoid  78 , load sense solenoid  64  and emergency shutdown indicator  50 . It also controls all electrical inputs, including pressure transducers  75 A and  75 B, sight level gauge  44 , main AC power and external control input  98  and control panel input device  58 . Finally, the computer  57  monitors time.  
         [0155]    Control panel input device  58  acts as a means to allow user input directly on control panel  4 .  
         [0156]    LCD screen  60  is an output device that provides feedback to the user of the present invention.  
       FIGS.  7 A and  7 B  
       [0157]    Return line port  62  is connected to hydraulic fluid return line  20  and provides a means for hydraulic fluid to return from hydraulic manifold  8  to hydraulic fluid reservoir  10 .  
         [0158]    Load sense solenoid  64  is controlled by computer  57  within control panel  4  and provides a means for adjusting the displacement of the variable displacement pump  128 . This is further explained in the description of FIG. 10.  
         [0159]    Load sense flow rate regulator  66  adjusts the displacement of the variable displacement pump when load sense solenoid  64  is active.  
         [0160]    Main hydraulic pressure input  68  is connected to hydraulic pressure port  92 .  
         [0161]    Primary hydraulic power transmission line  70  and alternate hydraulic power transmission line  72  provide a means to transfer hydraulic power from the present invention to external hydraulic powered device.  
         [0162]    Directional control solenoids  74 A and  74 B direct hydraulic pressure to either primary hydraulic power transmission line  70  or alternate hydraulic power transmission line  72 .  
         [0163]    Pressure transducers  75 A and  75 B monitor hydraulic pressure and communicate with computer  57  within control panel  4 .  
         [0164]    Directional control solenoids  76 A and  76 B direct return line port  62  to either primary hydraulic power transmission line  70  or alternate hydraulic power transmission line  72 .  
         [0165]    Soft start solenoid  78  controls whether hydraulic fluid is directed back to hydraulic fluid reservoir  10 , or directed to directional control solenoids  74 A and  74 B.  
         [0166]    Pressure relief valve  80  prevents hydraulic pressure from exceeding a preset limit by returning excess pressure to hydraulic fluid reservoir  10 .  
       FIG.  8   
       [0167]    Main AC electrical port  82  is connected to main AC power output  102 ,  
         [0168]    Electric motor  83  has it&#39;s speed reduced by gearbox  85  to drive variable displacement pump  28 .  
         [0169]    Case drain port  84  is connected to case drain line  22 .  
         [0170]    Compensator adjustment  86  limits the maximum hydraulic pressure variable displacement pump  128  can attain.  
         [0171]    Hydraulic adapter block  87  acts as a means to fasten electric motor  83  and variable displacement pump  128  to support structure  14 .  
         [0172]    Load sense connector  88  is connected to load sense line  24  and adjusts the displacement of the variable displacement pump when load sense solenoid  64  is active.  
         [0173]    Suction port  90  is connected to suction line  26 .  
         [0174]    Hydraulic pressure port  92  is connected to main hydraulic pressure input  68 .  
         [0175]    Gearbox breather vent  94  maintains pressure equilibrium within gearbox  85 .  
       FIGS.  9 A and  9 B  
       [0176]    Main DC power input  96  is connected to an external DC power source.  
         [0177]    Main AC power and external control input  98  is connected to an external AC power source, as well as to an external input device if required.  
         [0178]    Emergency stop and on/off button  100  is used to both power the present invention on or off, as well as power present invention down in emergency situations.  
         [0179]    Main AC power output  102  provides controlled AC power to main AC electrical port  82  of electric motor  83 .  
         [0180]    Main DC power ouput  104  provides DC power to control panel  4 .  
       FIG.  10   
       [0181]    Hydraulic fluid reservoir  10  acts as a means to contain the hydraulic fluid of the present invention, and houses hydraulic reservoir vent  48 , thermometer  124 , normally closed level switch  122 , and fluid level meter  120 .  
         [0182]    Variable displacement pump  128  is a hydraulic pump driven by electric motor  83 , which is controlled by computer  57  within control panel  4  that generates hydraulic pressure for the present invention. This hydraulic pressure is further directed according to the specification of the present invention.  
         [0183]    Normally open solenoid operated one way check valve  114 B in tandem with soft start solenoid  78 —which is controlled by computer  57  within control panel  4 —provides a means for hydraulic fluid to either return to hydraulic fluid reservoir  10  or create hydraulic pressure further within the system. This allows for a soft start—a feature that provides a means for the electric motor  83  to obtain a high rotational speed without load being present, which reduces power consumption during motor startup. Activating soft start solenoid  78  closes normally open solenoid operated one way check valve  114 B, thereby creating pressure further within the system.  
         [0184]    Pressure relief valve  80  prevents hydraulic pressure from exceeding a preset value by allowing excess hydraulic pressure from variable displacement pump  128  to return to hydraulic reservoir  10 .  
         [0185]    Normally open solenoid operated one way check valve  114 A is controlled by load sense solenoid  64 —which is activated by computer  57  within control panel  4 —which provides a means for multiple hydraulic flow rates to be selected. This allows for load sense, a feature which provides a means to conserve power and to speed up or slow down flow rate as required. When normally open solenoid operated one way check valve  114 A is closed by activating load sense solenoid  64 , flow is directed to load sense flow rate regulator  66 , which is adjusted to alter the amount of restriction during load sense. This creates a pressure differential between the output of hydraulic pressure port  92  and load sense line  24 . This pressure differential is detected by load sense connector  88 , which in turn acts to alter the displacement of the variable displacement pump  128 .  
         [0186]    One way check valve  112  prevents hydraulic pressure returning from work member  128  to hydraulic pressure port  92 . This maintains working hydraulic pressure when variable displacement pump  128  is not active.  
         [0187]    By activating directional control solenoid  74 A normally closed solenoid operated one way check valve  110 A is opened and hydraulic pressure is connected to alternate hydraulic power transmission line  72 . By activating directional control solenoid  74 B normally closed solenoid operated one way check valve  110 B is opened and hydraulic pressure is connected to primary hydraulic power transmission line  70 . By activating directional control solenoid  76 A normally closed solenoid operated one way check valve  110 C is opened and hydraulic fluid from alternate hydraulic power transmission line  72  is connected to return line port  62 . By activating directional control solenoid  76 B normally closed solenoid operated one way check valve  110 D is opened and hydraulic fluid from primary hydraulic power transmission line  70  is connected to return line port  62 . The combination of normally closed solenoid operated one way check valves  110 A,  110 B,  110 C and  110 D provide a means to completely control the direction of hydraulic pressure output to working member  108  and hydraulic fluid returned from working member  108 .  
         [0188]    Pressure transducers  106 A and  106 B monitor and communicate with computer  57  within control panel  4  the hydraulic pressure output by primary hydraulic power transmission line  70  and alternate hydraulic power transmision line  72 .  
         [0189]    Working member  108  can be any device that consumes hydraulic power.  
         [0190]    Hydraulic fluid filter  130  filters return hydraulic fluid from either normally closed solenoid operated one way check valve  110 C, normally closed solenoid operated one way check valve  110 D, pressure relief valve  80 , or normally open solenoid operated one way check valve  114 B.  
       Additional Embodiments of Present Invention  
       [0191]    There are many possible variations of the present invention possible other than the describe preferred embodiment. These include but are not limited to:  
         [0192]    (a) different variety of motor  
         [0193]    (b) different variety of pump  
         [0194]    (c) plurality of motors  
         [0195]    (d) plurality of pumps  
         [0196]    (e) fire suppression means  
         [0197]    (f) waste collection  
         [0198]    (g) different sources of electrical power  
         [0199]    (h) modified output means  
         [0200]    (i) plurality of computers  
         [0201]    (j) plurality of input means  
         [0202]    (k) plurality of control valves