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AssigneeIsuzu Motors Limited
InventorsYoshihisa Tashiro, Takehito Imai, Tsuneo Suzuki, Naofumi Ochi, Masashi Gabe
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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° ATDC to 90° 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.
A diesel engine fuel injection control method for performing an after injection after a main injection for at least one of rising of diesel engine exhaust gas temperature and decrease of the oxygen concentration in the exhaust gas, wherein said after injection is performed in a range of 40° ATDC to 90° ATDC of a crank angle.
An diesel engine fuel injection control method for performing a pilot injection and a main injection by controlling the fuel injection of a diesel engine, and for performing at least one engine fuel combustion among retard of said main injection or increase/decrease of the injection quantity, for at least one of rising of diesel engine exhaust gas temperature and decrease of the oxygen concentration in the exhaust gas, wherein the injection quantity of said pilot injection is increased/decreased, in accordance with the increase/decrease at least one of retard amount and injection quantity of said main injection.
A diesel engine fuel injection control method, composed to retard the injection timing of a main injection and, at the same time, perform the auxiliary injection twice or more at a timing before an injection timing of the main injection, in order to rise an exhaust temperature of a diesel engine.
Dependencies are inferred from the claim text.