Fuel injection system for diesel engine, comprises use of heat release charts to determine the difference between fuel required and fuel injected and use of result to correct injection times

摘要

For a particular common ramp injector a first chart (802) measures the actual release of heat (DQmes) and a second chart (804) identifies the theoretical release of heat (DQpre) for a model injector. After comparison (806) of the averages the difference is used to calculate (808) the increase of decrease in injector activation time required to compensate for injector wear and the result is implemented by the injector control system (810)