Method for carrying out an internal exhaust gas...

Details Method for carrying out an internal exhaust gas... Method for carrying out an internal exhaust gas...

2006-05-23

2006-05-23

Wolfe, Jr., Willis R. (Department: 3747)

Internal-combustion engines

Charge forming device

Exhaust gas used with the combustible mixture

Reexamination Certificate

active

07047954

ABSTRACT:
The invention relates to a method for carrying out an internal exhaust gas recirculation to the combustion chamber of a Diesel internal combustion engine according to which the inlet valve is briefly opened during the exhaust cycle. According to the invention, the start (Hv1) of the inlet valve approach stroke (HEv) lies in the range of 180° to 210° crank angle (KW) after the upper dead center (OTZ) of ignition, thereby improving emission performance in the low speed range and in the medium and high speed range.

REFERENCES:
patent: 4722315 (1988-02-01), Pickel
patent: 5224460 (1993-07-01), Havstad et al.
patent: 6543411 (2003-04-01), Raab et al.
patent: 6932063 (2005-08-01), Hu
patent: 3207 (1999-11-01), None
patent: 1242044 (1967-06-01), None
patent: 3437330 (1986-04-01), None
patent: 1054143 (2000-02-01), None
Patent Abstracts of Japan, vol. 1997, No. 07, Jul. 31, 1997 of JP 09-088646, Mar. 31, 1997, of Hamai Yuji et al., entitled “Engine Control Device”.

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