Compression ignition type engine

Details Compression ignition type engine Compression ignition type engine

1999-03-26

2000-08-15

Wolfe, Willis R.

Internal-combustion engines

Combustion chamber means having fuel injection only

Combustible mixture stratification means

12356821, 60278, F02B 1700, F02M 2507

Patent

active

061019992

ABSTRACT:
A compression ignition type engine, wherein a first combustion where the amount of the recirculated exhaust gas supplied to the combustion chamber is larger than the amount of recirculated exhaust gas where the amount of production of soot peaks and almost no soot is produced and a second combustion where the amount of recirculated exhaust gas supplied to the combustion chamber is smaller than the amount of recirculated exhaust gas where the amount of production of soot peaks are selectively switched between and wherein the air-fuel ratio is temporarily made rich immediately before switching from the first combustion to the second combustion or immediately after switching from the second combustion to the first combustion.

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Sato et al., "A Simultaneous Reduction of NO.sub.x and Soot in Diesel Engines Under a New Combustion System", Paper No. 205, Spring Symposium 1996, held by Society of Automotive Engineers of Japan, pp. 81-84.

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