Engine starting device

An engine starting and starter technology, which is applied to the starting of the engine, the starting of the motor for the engine, the engine components, etc., can solve the problems of discomfort of the driver and the passengers, and the instantaneous disconnection of the air conditioner, and achieves a low-cost circuit structure, Instantaneous interruption prevention, effect of simple circuit structure
CN102251900AInactive Publication Date: 2011-11-23MITSUBISHI ELECTRIC CORP
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Applications(China)
Current Assignee / Owner
MITSUBISHI ELECTRIC CORP
Publication Date
2011-11-23
Estimated Expiration
Not applicable Β· inactive patent

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Abstract

The invention provides an engine starting device which prevents intermittent disconnection with a simple circuit structure without damaging the function of the starting device even in the case of action failure of a short-circuiting switch. The engine starting device includes: a starter switch 5 which is serially connected between a power supply 3 and a starting engine 2; a resistor 6 which is serially connected with a starting engine switch; the short-circuiting switch 7 which makes the resistor be short out; and a timing circuit 8 which controls the on-off of the short-circuiting switch, electrifies the starting engine by the power supply via the starter switch and the resistor through shutting off the starter switch 5 to shut off the short-circuiting switch 7 after a delay period afterthe starter switch is shut off, such that the short-circuiting switch 7 is shut off and the resistor is short out; the contact of the short-circuiting switch 7 is a normally closed contact; before the contact of the starter switch 5 is closed, the contact of the short-circuiting switch 7 is disconnected; and after the contact of the starter switch is closed, the contact of the short-circuiting switch 7 is closed.
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Description

technical field

[0001] The invention relates to an engine starting device which uses a starter motor to start an engine. Background technique

[0002] In the case of starting the engine, the coil of the starter switch is energized to close the fixed contact of the starter switch, so that the vehicle power supply is used to supply power to the starter motor, so that the starter motor generates a rotational torque, and through the meshing The pinion and ring gear transmit the rotational force of the starter motor to the engine crankshaft to start the engine. At this time, when the starter switch is closed, the starter motor is still in a static state and does not generate back electromotive force voltage. Therefore, the extremely small internal resistance of the starter will cause an inrush current of hundreds to hundreds of amperes to flow. At this time, a voltage drop occurs in the vehicle power supply due to an internal inherent resistance in which the terminal voltage dro...

Claims

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