Solenoid control method for fuel-injection system, comprises applying supply voltage into freewheel circuit in order to control rate at which current within freewheel circuit decreases

摘要

Provides a voltage control circuit (300) comprising a second differencing component (302) and a structure similar to that of current control circuit (200), connecting the input to the second differencing component to the output from the current control circuit, applying into freewheel circuit a supply voltage of, any value between 0 and a maximum supply voltage, in order to control the rate at which the current within the freewheel circuit decreases.