A fuel injection control device is configured to suppress the effect of pressure pulsation occurring inside the accumulator section (22) of an engine (1) due to a first fuel injection and thereby accurately control the fuel injection quantity in an engine ...

An index for a sound pressure distribution to be realized in an internal combustion engine (10) is prepared with an engine revolution speed and an engine load defined as variables. A control parameter (qpl2, aintpl1, pcr, Int.A, Int.B) for the internal com...

In the diesel engine of the present invention, an early-stage injection (A) is performed so that this injection is divided into a plurality of injections during the compression stroke of the engine, and a main injection (B) is performed following the compl...

An injection ratio control system for an internal combustion engine (1) performs a multi-injection, in which multiple pilot injections and a main injection are performed. The system prohibits a first injection among the pilot injections if a main injection...

The holding current is varied during the injection cycle. Variation of its amplitude, which takes place from one cycle to the next, is a function of the engine rotary speed.

By closing or opening an SPV (electromagnetic valve for metering) (2) at a position advanced from cam lift start only by an amount of a pre-stroke value based on a timer position error between a target timer position or an actual timer position just before...