Internal-combustion engines – Precombustion and main combustion chambers in series – Having combustible mixture forming means
Reexamination Certificate
2005-01-11
2005-01-11
Solis, Erick (Department: 3747)
Internal-combustion engines
Precombustion and main combustion chambers in series
Having combustible mixture forming means
C123S305000
Reexamination Certificate
active
06840209
ABSTRACT:
Cleaning of exhaust gas and reduction of fuel costs are aimed at while realizing homogenious charge (or pre-mixing) compression ignition combustion and performing fuel injection in a suitable manner in all regions of engine operation. In a direct injection diesel engine there are provided an conventional injection mode in which fuel is injected with a timing (I) in the vicinity of the compression top dead center of piston (1) and a homogenious charge compression injection mode in which fuel is injected with a timing (II to V) which is earlier than that in the conventional injection mode, and such that fuel ignition does not occur at least until injection has been completed, fuel injection being performed by the conventional injection mode during full load operation of the engine and fuel injection being performed by the homogenious charge compression injection mode during part (low/medium) load operation of the engine. Ordinary diffusion combustion is realized when operating the engine under full load yet while receiving the benefit of amelioration of exhaust gas etc due to homogenious charge compression ignition combustion; thus, suitable fuel injection can be implemented over the entire operating range.
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Copy of EP Search Report Application Ser. No. EP 02 01 9671 dated Sep. 22, 2003.
Isuzu Motors Limited
Solis Erick
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