Engine starting circuit

Abstract

The invention discloses an engine starting circuit. The engine starting circuit is used for providing enough voltage for ignition of a spark plug when the engine is started and works; the engine starting circuit comprises an ignition circuit, a magnetic motor circuit, a direct-current electrical source circuit, an electronic control circuit, a switching circuit, and a starting motor circuit, wherein the ignition circuit is used for boosting the voltage accessed to the ignition circuit to the ignition voltage of a spark plug; the magnetic motor circuit is connected with the ignition circuit through a first switch; the direct-current electrical source circuit comprises a direct-current electrical source and a second switch, and the direct-current electrical source is connected with the ignition circuit through the second switch; the electronic control circuit is used for acquiring the working state of the engine and sending out a control signal; the switching circuit is used for receiving the control signal and controlling the connect or the disconnect of the direct-current electrical source circuit and the magnetic motor circuit by controlling the on-off of the first switch and thesecond switch; the starting motor circuit comprises a starting motor, wherein the starting motor is installed on the engine, the starting motor circuit is connected with the electronic control circuitand receives the control signal so as to control starting or stopping of a motor.

Description

technical field [0001] The present invention provides an engine starting circuit for igniting a spark plug in a gasoline engine. Background technique [0002] At present, most gasoline engine engines are started by hand, and then the magneto is powered to ignite the spark plug. A magneto is a small alternator that generates a magnetic field with a permanent magnet. However, at the initial stage of starting a gasoline engine, the voltage supplied by the magneto is low and unstable because the engine speed is low and unstable. In this case, the ignition energy of the spark plug will not be optimal, especially at low temperature and cold engine state, it will be even more difficult to start. Contents of the invention [0003] In order to solve the above problems, the present invention proposes an engine starting circuit, which is used to provide sufficient voltage for the spark plug to ignite when the engine starts and works, and the engine starting circuit includes: [000...

AI Technical Summary

Problems solved by technology

A magneto is a small alternator that generates a magnetic field through a permanent magnet, but at the initial stage of starting a gasoline engine, the voltage supplied by the magneto is low and unstable due to the low and unstable rotational speed of the engine

In this case, the ignition energy of the spark plug will not be optimal, especially at low temperature and cold engine state, it will be even more difficult to start.

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