Control device for hybrid vehicle drive apparatus
First Claim
1. A control device for a hybrid vehicle drive apparatus comprising:
- an internal combustion engine;
an electric motor connected to a power transmitting path extending to drive wheels;
an electrically controlled differential portion including a differential mechanism connected to the internal combustion engine in power transmissive manner and a differential-action electric motor connected to the differential mechanism in power transmissive manner, which is operative to control a differential state of the differential mechanism upon controlling an operating state of the differential-action electric motor, and a differential-action limiting device limiting a differential action of the differential mechanism;
a motor drive running mode configured to cause a vehicle to run with the electric motor with the internal combustion engine remaining under a halted state, whereinthe control device is operative to perform an internal-combustion-engine rotation control for rotating an output shaft of the internal combustion engine under a circumstance where a consecutive travel distance involved in the motor drive running mode exceeds a given consecutive travel distance determining value;
the control device is operative to perform the internal-combustion-engine rotation control also under a circumstance where a vehicle speed involved in the motor drive running mode exceeds a given vehicle speed determining value;
the control device is operative to continue the motor drive running mode without performing the internal-combustion-engine rotation control under a circumstance where the consecutive travel distance involved in the motor drive running mode does not exceed the given consecutive travel distance determining value and the vehicle speed involved in the motor drive running mode does not exceed the given vehicle speed determining value; and
the control device causes the output shaft of the internal combustion engine to rotate upon limiting the differential action of the differential mechanism.
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Accused Products
Abstract
A control device for hybrid vehicle drive apparatus which executes an internal-combustion-engine rotation control for rotating an engine output shaft under a circumstance where a consecutive travel distance LM involved in a motor drive running mode exceeds a given consecutive travel distance determining value L1. The rotation of the engine output shaft results in an effect of accelerating the lubrication of an engine. Once the engine output shaft is rotated, no component parts of the engine actually take the completely same attitudes at time before and after such rotation. This avoids the component parts of the engine from continuously remaining contact with each other in the same attitudes when encountered with running vibrations during the motor drive running mode, minimizing adverse affect on durability of the engine due to the running vibrations occurring in the motor drive running mode.
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Citations
29 Claims
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1. A control device for a hybrid vehicle drive apparatus comprising:
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an internal combustion engine; an electric motor connected to a power transmitting path extending to drive wheels; an electrically controlled differential portion including a differential mechanism connected to the internal combustion engine in power transmissive manner and a differential-action electric motor connected to the differential mechanism in power transmissive manner, which is operative to control a differential state of the differential mechanism upon controlling an operating state of the differential-action electric motor, and a differential-action limiting device limiting a differential action of the differential mechanism; a motor drive running mode configured to cause a vehicle to run with the electric motor with the internal combustion engine remaining under a halted state, wherein the control device is operative to perform an internal-combustion-engine rotation control for rotating an output shaft of the internal combustion engine under a circumstance where a consecutive travel distance involved in the motor drive running mode exceeds a given consecutive travel distance determining value; the control device is operative to perform the internal-combustion-engine rotation control also under a circumstance where a vehicle speed involved in the motor drive running mode exceeds a given vehicle speed determining value; the control device is operative to continue the motor drive running mode without performing the internal-combustion-engine rotation control under a circumstance where the consecutive travel distance involved in the motor drive running mode does not exceed the given consecutive travel distance determining value and the vehicle speed involved in the motor drive running mode does not exceed the given vehicle speed determining value; and the control device causes the output shaft of the internal combustion engine to rotate upon limiting the differential action of the differential mechanism. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A control device for a hybrid vehicle drive apparatus comprising:
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an internal combustion engine; an electric motor connected to a power transmitting path extending to drive wheels; an electrically controlled differential portion including a differential mechanism connected to the internal combustion engine in power transmissive manner and a differential-action electric motor connected to the differential mechanism in power transmissive manner, which is operative to control a differential state of the differential mechanism upon controlling an operating state of the differential-action electric motor, and a differential-action limiting device limiting a differential action of the differential mechanism; a motor drive running mode configured to cause a vehicle to run with the electric motor with the internal combustion engine remaining under a halted state, wherein the control device is operative to perform an internal-combustion-engine rotation control for rotating an output shaft of the internal combustion engine under a circumstance where a consecutive travel time involved in the motor drive running mode exceeds a given value; and the control device causes the output shaft of the internal combustion engine to rotate upon limiting the differential action of the differential mechanism. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A control device for a hybrid vehicle drive apparatus comprising:
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an internal combustion engine; an electric motor connected to a power transmitting path extending to drive wheels; an electrically controlled differential portion including a differential mechanism connected to the internal combustion engine in power transmissive manner and a differential-action electric motor connected to the differential mechanism in power transmissive manner, which is operative to control a differential state of the differential mechanism upon controlling an operating state of the differential-action electric motor, and a differential-action limiting device limiting a differential action of the differential mechanism; a motor drive running mode configured to cause a vehicle to run with the electric motor with the internal combustion engine remaining under a halted state, wherein the control device is operative to perform an internal-combustion-engine rotation control for rotating an output shaft of the internal combustion engine under a circumstance where a vehicle speed involved in the motor drive running mode exceeds a given value; and the control device causes the output shaft of the internal combustion engine to rotate upon limiting the differential action of the differential mechanism. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification