Hybrid vehicle drive system having a drive mode using both engine and electric motor
First Claim
1. A hybrid drive system for a motor vehicle, comprising:
- an engine operated by combustion of a fuel;
an electric energy storage device for storing an electric energy;
an electric motor operated with the electric energy stored in said electric energy storage device;
normal drive control means for controlling said engine and said electric motor so as to establish a normal drive state in which one of said engine and said electric motor is operated as a drive power source to drive the motor vehicle;
power drive control means for controlling said engine and said electric motor so as to establish a power drive state in which there is available a power drive mode in which both of said engine and said electric motor are operated as the drive power source to drive the motor vehicle;
power drive selecting means manually operated by an operator of the motor vehicle when the operator desires to drive the motor vehicle in said power drive mode; and
power drive restricting means for permitting said power drive control means to establish said power drive state if said power drive selecting means is not manually operated, and inhibiting said power drive control means from establishing said power drive state, to thereby inhibit the motor vehicle from being driven in said power drive mode, if said power drive selecting means is not manually operated.
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Accused Products
Abstract
A hybrid drive system for a motor vehicle, having a power drive state in which there is available a power drive mode in which an engine and an electric motor are both operated as a drive power source for driving the vehicle, and wherein a manually operated power drive selector is provided for selecting the power drive mode, and a power drive restricting device is provided to inhibit the vehicle from being driven in the power drive state and therefore in the power drive mode if the power drive selector is not manually operated. The hybrid drive system may have an engine assist drive mode in which the electric motor is operated as an auxiliary drive power source, together with the engine operated as a primary drive power source, according to a selected one of different drivability modes of the vehicle selected by a manually operated drivability performance selector.
243 Citations
12 Claims
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1. A hybrid drive system for a motor vehicle, comprising:
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an engine operated by combustion of a fuel; an electric energy storage device for storing an electric energy; an electric motor operated with the electric energy stored in said electric energy storage device; normal drive control means for controlling said engine and said electric motor so as to establish a normal drive state in which one of said engine and said electric motor is operated as a drive power source to drive the motor vehicle; power drive control means for controlling said engine and said electric motor so as to establish a power drive state in which there is available a power drive mode in which both of said engine and said electric motor are operated as the drive power source to drive the motor vehicle; power drive selecting means manually operated by an operator of the motor vehicle when the operator desires to drive the motor vehicle in said power drive mode; and power drive restricting means for permitting said power drive control means to establish said power drive state if said power drive selecting means is not manually operated, and inhibiting said power drive control means from establishing said power drive state, to thereby inhibit the motor vehicle from being driven in said power drive mode, if said power drive selecting means is not manually operated. - View Dependent Claims (2, 3, 4, 5)
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6. A hybrid drive system for a motor vehicle, comprising:
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an engine operated by combustion of a fuel; an electric motor operated by an electric energy; engine assist control means operable in an engine assist mode, for controlling said electric motor such that said electric motor is operated as needed, as an auxiliary drive power source, together with said engine, to assist the engine to drive the motor vehicle, during running of the motor vehicle with the engine operated as a primary drive power source; and drivability performance selecting means manually operated by an operator of the motor vehicle, for selecting one of a plurality of drivability modes of the motor vehicle, and wherein said engine assist control means includes assist torque changing means for changing an amount of an assist torque which is produced by said electric motor and which is added to a torque of said engine in said engine assist mode, said assist torque changing means changing the amount of said assist torque according to said one of the drivability modes of the motor vehicle selected by said drivability performance selecting means. - View Dependent Claims (7, 8, 9, 10, 11, 12)
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Specification