The fuel injection quantities, supply voltages and injector driving currents of the H.P. The stability and electrical characteristics for the voltage booster under various injection pulse durations and engine speeds are investigated. injector driven by the designed electrical driving circuit with the voltage booster are simulated and analyzed. injector driving circuit consists of a voltage booster circuit and an originally designed three-stage power MOSFETs injector driving circuit to control the dc-link power supply voltage. The DC 12~14V battery voltages have to be boosted up to the stable DC 60~90 V voltages supply for being able to drive various H.P. injectors are DC 60~90 V rather than DC 12~14V battery voltages. ![]() ![]() A DC/DC voltage booster circuit is essential to design for the high-pressure (H.P.) injector driving circuit since the power supply voltages for various H.P.
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