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Abstract: A
new solenoid-valve driving circuitry is presented, based upon which a
fuel-metering control algorithm is also developed and introduced. The
driving circuitry adopts a DC/DC converter to implement the dual-voltage
supply capability, and uses a two-stage current regulator to shape the
so called peak & hold current waveform. Fuel-metering control
characteristics based on this circuitry is analyzed. Then the control
cycle is established. Based upon instantaneous crank speed estimation,
time quantities are converted into angular quantities and vice versa
before the fuel metering-in stage. The circuitry and algorithm are
finally integrated and tested on an electronic unit-pump controlled
diesel engine.
Key
words:
Solenoid-valve
driving Fuel-metering control
Diesel engine
CLC No: TK421.4
国家973计划资助项目(2001CB209205). Received 20050516,
received in revised form 20051128
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