Method and auxiliary system for operating a comfort subsystem for a vehicle
First Claim
1. An air conditioning system for a cabin of a vehicle comprising:
- an air conditioning compressor having a drive shaft with a hub that is rotated to operate the air conditioning compressor;
an electrically operated clutch for coupling a first pulley to the drive shaft of the air conditioning compressor in response to control signals, the first pulley rotated by a first belt coupled to a drive engine of the vehicle;
a jackshaft rigidly coupled to the hub of the air conditioning compressor; and
a second pulley rigidly coupled to the jackshaft and driven by an electric motor with a second drive belt, wherein an end of the jackshaft not coupled to the hub is rotatably coupled with a bearing to a bearing bracket to reduce side loading on the jackshaft from the second drive belt.
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Accused Products
Abstract
According to one form of the invention, an auxiliary system is provided for supplying air conditioning to the cabin of a truck. The system includes an air conditioning compressor having a jackshaft mounted on a hub of the compressor. The system further includes an electric motor connected to the jackshaft by a belt for the motor, wherein the electric motor has a drive shaft and a pulley rigidly secured thereon, i.e., with no clutch and with no provision for slippage of the pulley relative to the drive shaft. The jackshaft has a pulley thereon for the electric motor drive. An end of the jackshaft that is not proximate to the compressor is rotatably held by a bearing and a bearing bracket in order to increase capability of the jackshaft to withstand side loading.
119 Citations
54 Claims
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1. An air conditioning system for a cabin of a vehicle comprising:
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an air conditioning compressor having a drive shaft with a hub that is rotated to operate the air conditioning compressor; an electrically operated clutch for coupling a first pulley to the drive shaft of the air conditioning compressor in response to control signals, the first pulley rotated by a first belt coupled to a drive engine of the vehicle; a jackshaft rigidly coupled to the hub of the air conditioning compressor; and a second pulley rigidly coupled to the jackshaft and driven by an electric motor with a second drive belt, wherein an end of the jackshaft not coupled to the hub is rotatably coupled with a bearing to a bearing bracket to reduce side loading on the jackshaft from the second drive belt. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An auxiliary system for a vehicle comprising:
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a hydrogen fuel cell receiving a regulated flow of pressurized hydrogen, pressurized air and generating a DC voltage output; a DC to AC converter receiving the DC voltage output and generating 3-phase AC output voltages; an electric motor coupled to the 3-phase AC output voltages and having an output shaft coupled with a drive belt to a jackshaft coupled to a hub of a compressor of an air conditioning system of the vehicle; a controller receiving the DC voltage output and generating a charge voltage for a starter battery of the vehicle and a fan drive voltage; and an auxiliary fan coupled to the fan drive voltage and generating an air stream directed to a condenser for the air conditioning system of the vehicle, wherein the hydrogen fuel cell, a source of pressurized hydrogen, the DC to AC converter, the electric motor and the controller are in a system module. - View Dependent Claims (21)
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22. An air conditioning system for a vehicle comprising:
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a condenser for the air conditioning system normally cooled in response to air flow from fan blades coupled to a drive engine of the vehicle; an auxiliary fan receiving an auxiliary fan voltage and directing an auxiliary air flow to the condenser; a compressor for the air conditioning system having a drive shaft coupled to a first pulley with an electrically operated clutch, the first pulley coupled with a first drive belt to the drive engine of the vehicle; a jackshaft connected to a hub on the drive shaft of the compressor, wherein an end of the jackshaft is rotatably coupled to a bearing attached to a bearing plate; an auxiliary AC electric motor having a drive shaft rigidly coupled to a second pulley, the second pulley coupled with a second drive belt to the jackshaft, wherein the drive engine rotates the compressor and the electric motor when an electric operated clutch is engaged and the electric motor rotates the compressor when the electric operated clutch is disengaged; a fuel cell system receiving pressurized hydrogen and a stream of pressurized air and generating a DC output voltage; a controller receiving the DC output voltage and cabin controls and generating the auxiliary fan voltage and a converter output; a DC to AC converter receiving the converter output and generating an AC voltage for the auxiliary AC electric motor. - View Dependent Claims (23, 24, 25)
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26. A truck comprising:
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a cabin for a driver; a chassis configured to couple to a trailer or a load carrying bed; and an air conditioning system for the cabin of the truck having a condenser for the air conditioning system normally cooled in response to air flow from fan blades coupled to a drive engine of the truck, an auxiliary fan receiving an auxiliary fan voltage and directing an auxiliary air flow to the condenser, a compressor for the air conditioning system having a drive shaft coupled to a first pulley with an electrically operated clutch, the first pulley coupled with a first drive belt to the drive engine of the truck, a jackshaft directly coupled to a hub on the drive shaft of the compressor, wherein an end of the jackshaft is rotatably coupled to a bearing attached to a bearing plate, an auxiliary AC electric motor having a drive shaft rigidly coupled to a second pulley, the second pulley coupled with a second drive belt to the jackshaft, wherein the drive engine rotates the compressor and the electric motor when an electric operated clutch is engaged and the electric motor rotates the compressor when the electric operated clutch is disengaged, a fuel cell system receiving pressurized hydrogen and a stream of pressurized air and generating a DC output voltage, a controller receiving the DC output voltage and cabin controls and generating the auxiliary fan voltage and a converter output, and a DC to AC converter receiving the converter output and generating an AC voltage for the auxiliary AC electric motor. - View Dependent Claims (27, 28, 29)
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30. A method for operating an air conditioning system for a cabin of a vehicle driven by an internal combustion engine (ICE), wherein a compressor of the air conditioning system has a drive shaft with a hub that is rotated to operate the compressor, the drive shaft of the air conditioning compressor coupled to a first pulley with an electrically operated clutch responsive to control signals, the first pulley rotated by a first belt coupled to the ICE, a jackshaft rigidly coupled to the hub of the air conditioning compressor, a second pulley rigidly coupled to the jackshaft, and an electric motor coupled to the second pulley with a second drive belt, wherein an end of the jackshaft not coupled to the hub rotatably with a bearing is coupled to a bearing bracket to reduce side loading on the jackshaft from the second drive belt. the method comprising:
responsive to the control signals, driving the electric motor with an auxiliary power source to operate the air conditioning system when the ICE is off and the electrically operated clutch disengages the first pulley from the drive shaft of the air conditioning compressor, wherein the auxiliary power source comprises a battery based power source having series and parallel connected battery cells configured to generate a battery DC voltage. - View Dependent Claims (31, 32, 33, 34, 35, 36)
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37. A method for operating an air conditioning system for a cabin of a vehicle driven by an internal combustion engine (ICE), wherein a compressor of the air conditioning system has a drive shaft with a hub that is rotated to operate the compressor, the drive shaft of the air conditioning compressor coupled to a first pulley with an electrically operated clutch responsive to control signals, the first pulley rotated by a first belt coupled to the ICE, a jackshaft rigidly coupled to the hub of the air conditioning compressor, a second pulley rigidly coupled to the jackshaft, and an electric motor coupled to the second pulley with a second drive belt, the method comprising:
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responsive to the control signals, driving the electric motor with an auxiliary power source to operate the air conditioning system when the ICE is off and the electrically operated clutch disengages the first pulley from the drive shaft of the air conditioning compressor, wherein the auxiliary power source comprises a battery based power source having series and parallel connected battery cells configured to generate a battery DC voltage; supplying power from the fuel cell DC voltage when the battery DC voltage is below a predetermined low battery value; charging the battery based power source from the fuel cell DC voltage while providing power when the battery DC voltage is below the predetermined low battery value; supplying power from both the fuel cell DC voltage and the battery DC voltage in parallel, wherein the battery DC voltage provides a peak current requirement; and supplying power from the battery based power source when the fuel cell DC voltage is below a predetermined low fuel cell value.
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38. A method for operating an air conditioning system for a cabin of a vehicle driven by an internal combustion engine (ICE), wherein a compressor of the air conditioning system has a drive shaft with a hub that is rotated to operate the compressor, the drive shaft of the air conditioning compressor coupled to a first pulley with an electrically operated clutch responsive to control signals, the first pulley rotated by a first belt coupled to the ICE, a jackshaft rigidly coupled to the hub of the air conditioning compressor, a second pulley rigidly coupled to the jackshaft, and an electric motor coupled to the second pulley with a second drive belt, the method comprising:
responsive to the control signals, driving the electric motor with an auxiliary power source to operate the air conditioning system when the ICE is off and the electrically operated clutch disengages the first pulley from the drive shaft of the air conditioning compressor, wherein the auxiliary power source comprises a battery based power source having series and parallel connected battery cells configured to generate a battery DC voltage, wherein the auxiliary power source further comprises a fuel cell system with an output that generates a fuel cell DC voltage, wherein a fuel cell in the fuel cell system is a hydrogen fuel cell coupled to a source of pressurized hydrogen and a source of pressurized air. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46)
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47. A method for operating an air conditioning system for a cabin of a vehicle driven by an internal combustion engine (ICE), wherein a compressor of the air conditioning system has a drive shaft with a hub that is rotated to operate the compressor, the drive shaft of the air conditioning compressor coupled to a first pulley with an electrically operated clutch responsive to control signals, the first pulley rotated by a first belt coupled to the ICE, a jackshaft rigidly coupled to the hub of the air conditioning compressor, a second pulley rigidly coupled to the jackshaft, and an electric motor coupled to the second pulley with a second drive belt, the method comprising:
responsive to the control signals, driving the electric motor with an auxiliary power source to operate the air conditioning system when the ICE is off and the electrically operated clutch disengages the first pulley from the drive shaft of the air conditioning compressor, wherein the auxiliary power source comprises a battery based power source having series and parallel connected battery cells configured to generate a battery DC voltage, wherein a starting battery of the vehicle is charged by the auxiliary power source when the starting battery is discharged or is at a low charge state.
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48. A method for operating an air conditioning system for a cabin of a vehicle driven by an internal combustion engine (ICE), wherein a compressor of the air conditioning system has a drive shaft with a hub that is rotated to operate the compressor, the drive shaft of the air conditioning compressor coupled to a first pulley with an electrically operated clutch responsive to control signals, the first pulley rotated by a first belt coupled to the ICE, a jackshaft rigidly coupled to the hub of the air conditioning compressor, a second pulley rigidly coupled to the jackshaft, and an electric motor coupled to the second pulley with a second drive belt, the method comprising:
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responsive to the control signals, driving the electric motor with an auxiliary power source to operate the air conditioning system when the ICE is off and the electrically operated clutch disengages the first pulley from the drive shaft of the air conditioning compressor, wherein the auxiliary power source comprises a battery based power source having series and parallel connected battery cells configured to generate a battery DC voltage; generating the control signals with an auxiliary controller in response to cabin controls in the vehicle, wherein the auxiliary controller generates a control signal that signals the clutch to disengage the first pulley from the drive shaft of the air conditioning compressor when the electric motor is powered and driving the jackshaft via the second drive belt, wherein the electric motor is an AC motor; and configuring the AC motor as a generator when the ICE is running and the first pulley is coupled to the drive shaft by the electric operated clutch thereby generating a source of AC power.
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49. An air conditioning system comprising:
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an air conditioning compressor having a drive shaft with a hub that is rotated to operate the air conditioning compressor; means for coupling a first pulley to the drive shaft of the air conditioning compressor, the first pulley rotated by a first belt coupled to an internal combustion engine; means for coupling a second pulley to the drive shaft of the air conditioning compressor, the second pulley rotated by a second belt coupled to an electric motor; means for disengaging the internal combustion engine from rotating the drive shaft when the electric motor is to rotate the drive shaft; and an auxiliary fan for cooling a condenser of the air conditioning system when the internal combustion engine is not running, wherein the electric motor is powered by a fuel cell system, wherein a starting battery of the internal combustion engine is charged by the fuel cell system when the starting battery is discharged or is at a low charge state.
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50. A method for implementing an air conditioning system for a cabin of an internal combustion engine (ICE) vehicle, wherein a compressor of the air conditioning system has a drive shaft with a hub that is rotated to operate the compressor, the method comprising:
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coupling a first pulley to the drive shaft of the air conditioning compressor with an electrically operated clutch, the first pulley rotated by a first belt coupled to the ICE of the vehicle; rigidly coupling a jackshaft to the hub of the air conditioning compressor; rigidly coupling a second pulley to the jackshaft; coupling an electric motor to the second pulley with a second drive belt; coupling an end of the jackshaft not coupled to the hub rotatably with a bearing to a bearing bracket to reduce side loading on the jackshaft from the second drive belt; and driving the electric motor with an auxiliary power source to operate the air conditioning system when the ICE is off and the electrically operated clutch disengages the first pulley from the drive shaft of the air conditioning compressor, wherein the auxiliary power source comprises a battery based power source having battery cells configured to generate a battery DC voltage. - View Dependent Claims (51)
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52. A method for implementing an air conditioning system for a cabin of an internal combustion engine (ICE) vehicle, wherein a compressor of the air conditioning system has a drive shaft with a hub that is rotated to operate the compressor, the method comprising:
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coupling a first pulley to the drive shaft of the air conditioning compressor with an electrically operated clutch, the first pulley rotated by a first belt coupled to the ICE of the vehicle; rigidly coupling a jackshaft to the hub of the air conditioning compressor, rigidly coupling a second pulley to the jackshaft; coupling an electric motor to the second pulley with a second drive belt; driving the electric motor with an auxiliary power source to operate the air conditioning system when the ICE is off and the electrically operated clutch disengages the first pulley from the drive shaft of the air conditioning compressor, wherein the auxiliary power source further comprises a fuel cell with an output that generates a fuel cell DC voltage; supplying power from the fuel cell DC voltage when the battery DC voltage is below a predetermined low battery value; charging the battery based power source from the fuel cell DC voltage while providing power when the battery DC voltage is below the predetermined low battery value; supplying power from both the fuel cell DC voltage and the battery DC voltage in parallel, wherein the battery DC voltage provides a peak current requirement; and supplying power from the battery based power source when the fuel cell DC voltage is below a predetermined low fuel cell value.
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53. A method for operating an air conditioning system for a cabin of a vehicle driven by an internal combustion engine (ICE), wherein a compressor of the air conditioning system has a drive shaft with a hub that is rotated to operate the compressor, the drive shaft of the air conditioning compressor coupled to a first pulley with an electrically operated clutch responsive to control signals, the first pulley rotated by a first belt coupled to the ICE, a jackshaft rigidly coupled to the hub of the air conditioning compressor, a second pulley rigidly coupled to the jackshaft, and an electric motor coupled to the second pulley with a second drive belt, the method comprising:
responsive to the control signals, driving the electric motor with an auxiliary power source to operate the air conditioning system when the ICE is off and the electrically operated clutch disengages the first pulley from the drive shaft of the air conditioning compressor, wherein an end of the jackshaft not coupled to the hub rotatably with a bearing is coupled to a bearing bracket to reduce side loading on the jackshaft from the second drive belt.
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54. A method for implementing an air conditioning system for a cabin of an internal combustion engine (ICE) vehicle, wherein a compressor of the air conditioning system has a drive shaft with a hub that is rotated to operate the compressor, the method comprising:
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coupling a first pulley to the drive shaft of the air conditioning compressor with an electrically operated clutch, the first pulley rotated by a first belt coupled to the ICE of the vehicle; rigidly coupling a jackshaft to the hub of the air conditioning compressor; rigidly coupling a second pulley to the jackshaft; coupling an electric motor to the second pulley with a second drive belt; and coupling an end of the jackshaft not coupled to the hub rotatably with a bearing to a bearing bracket to reduce side loading on the jackshaft from the second drive belt.
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Specification