Method and apparatus for shaping and injecting fuel pulse waves.

摘要

A fuel delivery system (10) for an internal combustion engine delivers fuel by automatic selection of different sections of a fuel pumping ramp (49) of a cam mechanism (47) to control the rate of fuel injection by varying and shaping injection pressure waves to match engine air intake flow for different engine speed and load conditions. A solenoid operated fuel delivery valve (58,61) controls fuel timing and quantity by commands from a microprocessor (80) with inputs which includes torque demand, engine speed, cam mechanism position and solenoid current regulator signals. <IMAGE>