Generating voltage charging method for motor

Abstract

The invention is to perform a step for boosting by inputting an oscillation pulse Pb generated by an oscillator 54 on direct current output and a step for boosting by inputting a CPU pulse Pc generated by CPU 55a on direct current output in a chopper in the generated voltage boosting method of a generator for driving the AC generator 33 by an engine 15 in order to charge the direct current output to a battery 21 and / or supply it to electric load, rectifying alternating current output generated by the AC generator 33, and performing the chopper converting, boosting and rectifying the direct current output to one end alternating current after rectifying it. One of the oscillator and the central processing unit boosts the voltage at first, next the other one make further can boosting, and boosting can be efficiently performed in respective boosting ranges. Thus, during engine start, sufficient voltage can be supplied to the ignition system and fuel supply system of the engine, and the engine start can be performed speedily.

Description

technical field [0001] The present invention relates to a power generation voltage boosting method of a generator which can provide a sufficiently high voltage to a fuel supply system and an ignition system even when the power generation voltage is low when an engine is started, and improves engine startability. Background technique [0002] As a method of increasing the output voltage generated by the generator so as to supply the fuel supply system load and other electrical loads at the time of engine start-up, there is known, for example, the "power supply device for internal combustion engine" described in JP-A-8-51731. " in the method. [0003] in the above-mentioned bulletin image 3 Describes such a first power supply circuit 10, that is, it has a booster rectifier circuit 10a composed of MOSFET (F1), MOSFET (F2) and rectifier diodes D21, D22 on the generator coil Wp of the generator and connected to the Between the DC output terminals t1 and t2 of the booster rectif...

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Problems solved by technology

[0005] According to the technology of the above-mentioned publication, the power generation voltage of the generator is low when the engine is started and the FET control circuit 10b cannot be activated. If the boost is not performed, the required voltage cannot be obtained, and the fuel pump 11 and the ignition system cannot work. cranking, engine cranking also takes a lot of time before the voltage rises

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