Engine starter

Abstract

An engine starter capable of cranking a crankshaft finally in forward direction after driving in revere direction, wherein a motor is energized so as to be intermittently rotated in forward direction before the driving in reverse direction at least under specified conditions so that assured start can be performed at all times, whereby, as necessary, the crankshaft (piston) can be moved to an optimum position and, in addition, this control can be realized without using any special angle sensor.

Description

technical field [0001] The present invention relates to engine starting devices. Background technique [0002] Conventionally, in automobiles, the power output shaft is rotated by an electric motor, and the electric motor is used as a generator. In this way, the starter and the generator can be used both with one electric motor, thereby simplifying the auxiliary equipment of the engine. [0003] In the starting device, since the position of the piston is not fixed when the engine is started, it must be able to start from the state of stopping at the position just before the compression stroke, and it can also be reliably started in a cold state such as viscous resistance. Therefore, It is necessary to consider increasing the output power of the motor, so there is a problem of increasing the size of the motor. [0004] In order to start under the above-mentioned conditions even if the output power of the electric motor is small, it is sufficient to make a swing type starter...

AI Technical Summary

Problems solved by technology

[0006] However, although the crankshaft angle (piston position) in the engine stop state can be roughly estimated, it cannot always be said to be the same. When setting the reverse drive amount taking into account the error, there is usually not a sufficient boost zone. , it is impossible to reduce the rated output power of the motor as much as possible

In order to know the position of the piston, it is necessary to install an encoder, etc., which will cause a problem of increasing the cost of the device.

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