Patent ID: 7415964

Claim:
A fuel injection control apparatus for a diesel engine comprising: an accumulator in which fuel is stored at a controlled pressure; an electrically energized injector working to inject the fuel, as stored in said accumulator, into a diesel engine; an injector drive circuit working to control energization of said injector; and a controller working to determine a multi-injection mode in which the fuel is to be injected from said injector into the diesel engine in a sequence of multiple injections in an operating cycle of the diesel engine and output an injection signal to said injector drive circuit to perform the multi-injection mode through said injector, said controller determining whether a number of injections to be executed in a subsequent operating cycle of the diesel engine is allowed to be increased or not in a range which ensures stability of operation of the diesel engine based on a temperature of said injector drive circuit, when it is determined that the number of injections is allowed to be increased, said controller increasing the number of injections to be executed in the subsequent operating cycle of the engine.