Isuzu Motors Limited

Tsuneo Suzuki

Masashi Gabe

Naofumi Ochi

Takehito Imai

Yoshihisa Tashiro

A regeneration control method for regenerating a continuously regenerating diesel particulate filter device capable of regenerating a filter by efficiently removing PM while suppressing the deterioration of fuel consumption and preventing a drivability from being deteriorated, wherein the clogged-state of the filter is judged in three or more phases of the clogged-state and, when the clogged-state of the filter reaches a specified phase, a specified regenerating mode operation set in correspondence with the reached phase is performed.

Regeneration control method for continuously regenerating diesel particulate filter device

Regenerative control method for continuous regenerative diesel particulate filter device

The present invention concerns an diesel engine fuel injection control, and a regeneration control method of exhaust gas post-treatment apparatus using this fuel injection control, and the engine fuel injection control for performing after injections (Fas, Fam) after a main injection (Fm) for activation and regeneration of the exhaust gas post-treatment apparatus, through the rising of diesel engine exhaust gas temperature or the decrease of the oxygen concentration in the exhaust gas, is composed to perform the after injections (Fas, Fam) in a range of 40&#xb0; ATDC to 90&#xb0; ATDC of the crank angle. Whereby, the main injection can be burned, without misfire, even when the main injection is largely retarded, or, the injection quantity is increased/decreased, and the engine operation can be sustained, by keeping the engine combustion in a good state.

Fuel injection control method for diesel engine and regenerative control method for exhaust gas after treatment device

A diesel particulate filer unit comprising a filter for capturing particulates in the exhaust gas G of an engine E, and a regeneration control means judging the start of the regeneration operation of said filter , according to the comparison between the value measured by exhaust pressure sensors and a predetermined exhaust pressure judgment value &Dgr;Pes, Pes, Res wherein said regeneration control means is configured to estimate the ash accumulated quantity SAsh of ash leaked into the exhaust gas G and accumulated in said filer and correct said exhaust pressure judgment value &Dgr;Pes, Pes, Res for judging the regeneration operation start based on this. Thereby, a diesel particulate filter that can judge the regeneration start timing appropriately, taking accumulation and deposit of ash generated from lubricant oil on the filter into consideration, and remove particulates efficiently all the way preventing the filter from clogging is provided.

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Fujisawa, Japan

Tsuneo Suzuki