Vehicle control device and idling system
First Claim
1. A vehicle control device, comprising a vehicle control unit that controls engagement between an engine and a starter motor for starting the engine,wherein the vehicle control unit causes the engine to rotate inertially with cutting off fuel supply to the engine, controls supply of electrical power to start rotation of the starter motor based on a rotational speed of the engine that is rotating inertially in a state in which fuel supply to the engine is cut off and the starter motor is not engaged with the engine, causes the starter motor to rotate inertially when a rotational speed of the starter motor has reached a first predetermined value, and engages the starter motor to the engine when the rotational speed of the engine and the rotational speed of the starter motor have become equal to each other or when an absolute value of difference of the rotational speed of the engine and the rotational speed of the starter motor has become less than or equal to a second predetermined value.
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Accused Products
Abstract
A vehicle control device, including a vehicle control unit that controls engagement between an engine and a starter motor for starting the engine, wherein the vehicle control unit, along with cutting off fuel supply to the engine and causing the engine to rotate inertially, also, in a state in which fuel supply to the engine is cut off and the starter motor is not engaged with the engine, rotates the starter motor, and thereafter controls supply of electrical power to the starter motor so as to causes the starter motor to rotate inertially, and engages the starter motor to the engine while both the engine and the starter motor are performing inertial rotation.
15 Citations
21 Claims
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1. A vehicle control device, comprising a vehicle control unit that controls engagement between an engine and a starter motor for starting the engine,
wherein the vehicle control unit causes the engine to rotate inertially with cutting off fuel supply to the engine, controls supply of electrical power to start rotation of the starter motor based on a rotational speed of the engine that is rotating inertially in a state in which fuel supply to the engine is cut off and the starter motor is not engaged with the engine, causes the starter motor to rotate inertially when a rotational speed of the starter motor has reached a first predetermined value, and engages the starter motor to the engine when the rotational speed of the engine and the rotational speed of the starter motor have become equal to each other or when an absolute value of difference of the rotational speed of the engine and the rotational speed of the starter motor has become less than or equal to a second predetermined value.
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15. An idling stop system, comprising an idling stop control unit that, along with pausing the operation of an engine when a predetermined condition for permitting engine pausing is valid, also controls engagement between the engine and a starter motor for restarting the engine,
wherein the idling stop control unit causes the engine to rotate inertially with cutting off fuel supply to the engine when the predetermined condition has become valid, controls supply of electrical power to start rotation of the starter motor based on a rotational speed of the engine that is rotating inertially, in a state in which fuel supply is cut off and the starter motor is not engaged with the engine, and to cause the starter motor to rotate inertially when a rotational speed of the starter motor has reached a first predetermined value, and engages the starter motor to the engine when the rotational speed of the engine and the rotational speed of the starter motor have become equal to each other or when an absolute value of difference of the rotational speed of the engine and the rotational speed of the starter motor has become less than or equal to a second predetermined value.
Specification