Stop position estimating apparatus of internal combustion engine
First Claim
1. A stop position estimating apparatus of an internal combustion engine comprising:
- a motor generator having a function of at least one of a motor and a generator interlocked with a crankshaft of the internal combustion engine;
a first detecting unit for detecting a rotation position of the motor generator;
a second detecting unit for detecting a crank angle of the crankshaft; and
an estimating unit for estimating a stop position of the internal combustion engine based on the rotation position of the motor generator and the crank angle.
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Accused Products
Abstract
A stop position control apparatus of an internal combustion engine is applied to a vehicle of a type in which a function of a motor or a generator is connected to a crankshaft of the engine, such as an economic-running vehicle and a hybrid vehicle, for example. A rotation position of a motor generator is detected by a motor angle sensor or the like, and a crank angle of the engine is detected by a crank angle sensor or the like. A stop position of the internal combustion engine i.e., a crank angle, at the time of stop page is estimated based on the rotation position of the motor generator and the crank angle. By utilizing both the detection results, the stop position of the internal combustion engine can be accurately estimated. By detecting a rotation direction of the crankshaft from the output of the motor angle sensor, the stop position of the engine can be accurately estimated even when the engine is rotated in the reverse direction at the time of the engine stopping.
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Citations
8 Claims
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1. A stop position estimating apparatus of an internal combustion engine comprising:
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a motor generator having a function of at least one of a motor and a generator interlocked with a crankshaft of the internal combustion engine;
a first detecting unit for detecting a rotation position of the motor generator;
a second detecting unit for detecting a crank angle of the crankshaft; and
an estimating unit for estimating a stop position of the internal combustion engine based on the rotation position of the motor generator and the crank angle. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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Specification