IC engine fuel system with timing control circuit - supplying control signal at correct time and of length appropriate to engine speed and fuel required

摘要

The fuel system for an engine includes a fuel pump having an electromagnetically controlled spill vavle which is energised by a drive circuit when, during a pumping stroke of the pump, it is required to supply fuel. The system also includes timing control circuit which supplies a control signal to the drive circuit and itself receives timing signals from transducers which are mounted on the associated engine. The timing control circuit supplies a signal at the appropriate time to start the delivery of fuel and of a duration appropriate for the amt. of fuel to be supplied. A governor circuit generates a signal indicative of the amt. of fuel to be supplied to the engine.