Device for controlling hybrid vehicle
First Claim
1. A hybrid vehicle drive system comprising:
- an engine;
a motor/generator connected to the engine and connected to a battery that carries out charging/ discharging;
a transmission connected to the motor/generator, in which a gear ratio can be fixed by a driver'"'"'s input;
a drive wheel connected to the transmission; and
a controller programmed to selectively set an assist traveling mode in which the motor/generator generates a drive torque, and an engine generation traveling mode in which the motor/generator generates a power generation torque, as hybrid modes in which the engine and the motor/generator are drive sources,the controller being programmed to include;
a rotational speed limit setting unit programmed to set a value that exceeds an upper rotational speed, at which the motor/generator can generate a requested torque, as a rotational speed limit of the motor/generator, anda rotational speed limit control unit programmed to reduce the rotational speed limit to the upper rotational speed at which the motor/generator can generate the requested torque, when a rotational speed of the motor/generator has reached the rotational speed limit, and a request for the requested torque of the motor/generator exists, during the assist traveling mode in a state in which the gear ratio is fixed by the driver'"'"'s input,the requested torque being a requested drive torque or a requested power generation torque.
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Accused Products
Abstract
A hybrid vehicle control device includes an engine, a motor/generator, an automatic transmission in which the gear ratio can be fixed by the driver'"'"'s intention; and a drive wheel. The control device has an assist traveling mode and an engine generation traveling mode as hybrid modes in which the engine and the motor/generator are drive sources. The control device includes a rotational speed limit setting unit which sets a value that exceeds the upper rotational speed limit, at which the motor/generator can carry out a torque output, as the rotational speed limit of the engine motor rotational speed, and a rotational speed limit control unit for reducing the rotational speed limit to the rotational speed limit at which the motor/generator can carry out a torque output, when the engine motor rotational speed has reached the rotational speed limit and there is a torque output request of the motor/generator.
15 Citations
17 Claims
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1. A hybrid vehicle drive system comprising:
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an engine; a motor/generator connected to the engine and connected to a battery that carries out charging/ discharging; a transmission connected to the motor/generator, in which a gear ratio can be fixed by a driver'"'"'s input; a drive wheel connected to the transmission; and a controller programmed to selectively set an assist traveling mode in which the motor/generator generates a drive torque, and an engine generation traveling mode in which the motor/generator generates a power generation torque, as hybrid modes in which the engine and the motor/generator are drive sources, the controller being programmed to include; a rotational speed limit setting unit programmed to set a value that exceeds an upper rotational speed, at which the motor/generator can generate a requested torque, as a rotational speed limit of the motor/generator, and a rotational speed limit control unit programmed to reduce the rotational speed limit to the upper rotational speed at which the motor/generator can generate the requested torque, when a rotational speed of the motor/generator has reached the rotational speed limit, and a request for the requested torque of the motor/generator exists, during the assist traveling mode in a state in which the gear ratio is fixed by the driver'"'"'s input, the requested torque being a requested drive torque or a requested power generation torque. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification