CONTROL DEVICE FOR HYBRID VEHICLE POWER TRANSMITTING APPARATUS
First Claim
1. A control device for a hybrid vehicle power transmitting apparatus,the hybrid vehicle power transmitting apparatus comprising (i) an electrically controlled differential portion including a differential mechanism connected between an engine and drive wheels, and a first electric motor connected to the differential mechanism in a power transmissive state, a differential state of the differential mechanism being controlled upon controlling an operating state of the first electric motor, and (ii) a second electric motor connected to a power transmitting path;
- the control device performing an alteration on a reactive control, representing an operation to control reactive torque of the second electric motor in opposition to rotational resistance of the engine during startup of the engine, based on a fuel type used in operating the engine.
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Accused Products
Abstract
A control device is provided for a hybrid vehicle power transmitting apparatus wherein when a fuel type supplied to an engine is altered, a drop in startability of the engine resulting from alteration on the fuel type is suppressed. Fuel-type determining means determines the fuel type for use in operating the engine, based on which a reactive control representing a control of reactive control of a second electric motor counteracting rotational resistance of the engine during engine startup, is altered. Accordingly, second-motor torque (reactive torque) for increasing an engine rotation speed during engine startup is adjusted depending on the fuel type, thereby increasing a temperature of fuel compressed and expanded in the engine, to a level available to initiate an ignition. This prevents the alteration of the fuel type from causing degradation in startability of the engine when the fuel type supplied to the engine is altered.
53 Citations
20 Claims
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1. A control device for a hybrid vehicle power transmitting apparatus,
the hybrid vehicle power transmitting apparatus comprising (i) an electrically controlled differential portion including a differential mechanism connected between an engine and drive wheels, and a first electric motor connected to the differential mechanism in a power transmissive state, a differential state of the differential mechanism being controlled upon controlling an operating state of the first electric motor, and (ii) a second electric motor connected to a power transmitting path; the control device performing an alteration on a reactive control, representing an operation to control reactive torque of the second electric motor in opposition to rotational resistance of the engine during startup of the engine, based on a fuel type used in operating the engine. - View Dependent Claims (2, 3, 7, 9, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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4. A control device for a hybrid vehicle power transmitting apparatus,
the hybrid vehicle power transmitting apparatus comprising (i) an electrically controlled differential portion including a differential mechanism connected between an engine and drive wheels, and a first electric motor connected to the differential mechanism in a power transmissive state, a differential state of the differential mechanism being controlled upon controlling an operating state of the first electric motor, and (ii) a second electric motor connected to a power transmitting path; the control device being operative to alter an engine rotation speed control representing an operation of the first electric motor to control an engine rotation speed during startup of the engine, based on a fuel type used in operating the engine. - View Dependent Claims (5, 6, 8, 10, 20)
Specification