Hybrid vehicle employing hybrid system
First Claim
1. A hybrid vehicle comprising:
- an internal combustion engine serving as a propelling power source for vehicle propulsion;
an electric motor serving as a propelling power source for vehicle propulsion;
an electric generator driven by the engine for power generation;
a battery electrically connected to the motor and the generator;
sensors and switches for detecting operating conditions on the engine and the vehicle; and
a control system electrically connected to the engine, the motor, the generator, the battery and the sensors and switches, for controlling the engine, the motor and the generator;
the control system comprising;
(i) an engine misfire determination section that determines whether an engine misfire occurs; and
(ii) a control section that permits operation of only the motor as the propelling power source to establish a motor propelled vehicle driving mode and simultaneously inhibits operation of the engine, when satisfying a predetermined first condition comprising at least a condition that the engine misfire occurs.
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Accused Products
Abstract
In a hybrid electric vehicle (HEV) employing a hybrid system using both an internal combustion engine and a second motor/generator as a propelling power source for vehicle propulsion, and also employing a first generator driven by the engine for power generation, an integrated HEV control system is provided to control the engine, and the first and second motor/generators. The integrated HEV control system permits operation of only the second motor/generator as the propelling power source to establish a motor propelled vehicle driving mode and simultaneously basically inhibits operation of the engine, when satisfying at least a condition that the engine misfire occurs. If a power generation requirement or a battery recharge requirement is present during the misfire period, operation of the engine is temporarily permitted for driving the first motor/generator only for a battery recharge.
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Citations
13 Claims
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1. A hybrid vehicle comprising:
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an internal combustion engine serving as a propelling power source for vehicle propulsion;
an electric motor serving as a propelling power source for vehicle propulsion;
an electric generator driven by the engine for power generation;
a battery electrically connected to the motor and the generator;
sensors and switches for detecting operating conditions on the engine and the vehicle; and
a control system electrically connected to the engine, the motor, the generator, the battery and the sensors and switches, for controlling the engine, the motor and the generator;
the control system comprising;
(i) an engine misfire determination section that determines whether an engine misfire occurs; and
(ii) a control section that permits operation of only the motor as the propelling power source to establish a motor propelled vehicle driving mode and simultaneously inhibits operation of the engine, when satisfying a predetermined first condition comprising at least a condition that the engine misfire occurs. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A hybrid vehicle comprising:
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an internal combustion engine serving as a propelling power source for vehicle propulsion;
an electric motor serving as a propelling power source for vehicle propulsion;
an electric generator driven by the engine for power generation;
a battery electrically connected to the motor and the generator;
sensors and switches for detecting operating conditions on the engine and the vehicle; and
a control system electrically connected to the engine, the motor, the generator, the battery and the sensors and switches, for controlling the engine, the motor and the generator;
the control system comprising;
(i) engine misfire determination means for determining whether an engine misfire occurs; and
(ii) control means for permitting operation of only the motor as the propelling power source to establish a motor propelled vehicle driving mode and simultaneously for inhibiting operation of the engine, when satisfying a predetermined first condition comprising at least a condition that the engine misfire occurs.
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10. A method of controlling a hybrid vehicle employing an internal combustion engine serving as a propelling power source for vehicle propulsion, an electric motor serving as a propelling power source for vehicle propulsion, an electric generator driven by the engine for power generation, a battery electrically connected to the motor and the generator, and sensors and switches for detecting operating conditions on the engine and the vehicle, the method comprising:
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determining whether an engine misfire occurs;
permitting operation of only the motor as the propelling power source to establish a motor propelled vehicle driving mode when satisfying at least a condition that the engine misfire occurs; and
simultaneously inhibiting operation of the engine, when satisfying the condition that the engine misfire occurs. - View Dependent Claims (11, 12, 13)
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Specification