Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1993-03-25
1994-12-27
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Fuel injection system
123506, 123502, F02D 4114, F02D 4140
Patent
active
053755758
ABSTRACT:
A fuel-injection device includes a solenoid valve which adjusts a fuel-injection level of a fuel-injection pump by adjusting its throttling for the fuel-injection passage to supply the fuel to a compressor. A driving pulse to drive the solenoid valve is formed taking various factors into consideration. For example, the driving pulse is composed of a segment having a large duty ratio and a segment having a small duty ratio in order to secure a responsiveness of the solenoid valve. The driving pulse is formed on the basis of a change in electrical voltage to drive the solenoid valve, varying levels of voltage drop in a wiring harness installed for every cylinder, and of varying levels of responsiveness unique with fuel-injection pumps.
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Fujita Mitsuhiro
Ohishi Takashi
Shinagawa Masahiko
Yajima Satoshi
Moulis Thomas N.
Wolfe Willis R.
Zexel Corporation
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