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, under a predetermined first condition comprising at least a condition that the engine misfire occurs, the predetermined first condition comprising a condition that a state of charge of the battery is greater than or equal to a predetermined reference value, and that permits operation of the motor as the propelling power source to establish the motor propelled vehicle driving mode and simultaneously permits operation of the engine for driving the generator only for a battery recharge, under a predetermined second condition that the engine misfire occurs and the state of charge of the battery is less than the predetermined reference value.
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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
7 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, under a predetermined first condition comprising at least a condition that the engine misfire occurs, the predetermined first condition comprising a condition that a state of charge of the battery is greater than or equal to a predetermined reference value, and that permits operation of the motor as the propelling power source to establish the motor propelled vehicle driving mode and simultaneously permits operation of the engine for driving the generator only for a battery recharge, under a predetermined second condition that the engine misfire occurs and the state of charge of the battery is less than the predetermined reference value. - View Dependent Claims (2, 3, 4, 5, 6)
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7. 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, under a predetermined first condition comprising at least a condition that the engine misfire occurs, the predetermined first condition comprising a condition that a state of charge of the battery is greater than or equal to a predetermined reference value, and for permitting operation of the motor as the propelling power source to establish the motor propelled vehicle driving mode and simultaneously permitting operation of the engine for driving the generator only for a battery recharge, under a predetermined second condition that the engine misfire occurs and the state of charge of the battery is less than the predetermined reference value.
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Specification