Hybrid electric vehicle and method of selectively operating the hybrid electric vehicle
First Claim
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1. A method for adaptively stopping an internal combustion engine connected to a generator, comprisingallowing the internal combustion engine to idle;
- activating a cooling system in order to lower a temperature of the internal combustion engine to a first predetermined temperature;
shutting off fuel supplied to the internal combustion engine after the internal combustion engine is below the first predetermined temperature level;
turning off an ignition spark in the internal combustion engine after the internal combustion engine has stopped; and
turning off the cooling system after the temperature of the internal combustion engine is lowered to a second predetermined temperature which is lower than the first predetermined temperature.
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Abstract
A series type hybrid electric vehicle that controls an internal combustion engine, generator, and electric motor for reducing the load applied to the internal combustion engine when the internal combustion engine is restarted, lowers the thermal stresses to the internal combustion engine when the engine is turned off and is able to remove excess fuel when turning off the internal combustion engine.
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Citations
14 Claims
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1. A method for adaptively stopping an internal combustion engine connected to a generator, comprising
allowing the internal combustion engine to idle; -
activating a cooling system in order to lower a temperature of the internal combustion engine to a first predetermined temperature; shutting off fuel supplied to the internal combustion engine after the internal combustion engine is below the first predetermined temperature level; turning off an ignition spark in the internal combustion engine after the internal combustion engine has stopped; and turning off the cooling system after the temperature of the internal combustion engine is lowered to a second predetermined temperature which is lower than the first predetermined temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A vehicle, comprising:
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an internal combustion engine; a generator connected to the internal combustion engine; and a controller that; allows the internal combustion engine to idle; activates a cooling system in order to lower a temperature of the internal combustion engine to a first predetermined temperature; shuts off fuel supplied to the internal combustion engine after the internal combustion engine is below the first predetermined temperature level; turns off an ignition spark in the internal combustion engine after the internal combustion engine has stopped; and turns off the cooling system after the temperature of the internal combustion engine is lowered to a second predetermined temperature which is lower than the first predetermined temperature. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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Specification