Temperature control system for emission device coupled to direct

Details Temperature control system for emission device coupled to direct Temperature control system for emission device coupled to direct

1997-12-22

1999-06-08

Verdier, Christopher

Power plants

Internal combustion engine with treatment or handling of...

Methods

60286, 60276, 60303, F01N 300

Patent

active

059100966

ABSTRACT:
A direct injection spark ignition engine is disclosed in which fuel is injected during a compression stroke of each combustion chamber for stratified mode operation. Additional fuel is injected into each combustion chamber during its exhaust stroke while operating in the stratified mode to provide an exotherm for heating the NOx trap in response to a low temperature indication. When total fuel injected into the combustion chamber exceeds a predetermined value, engine operation is switched from the stratified to the homogeneous mode.

REFERENCES:
patent: 5207058 (1993-05-01), Sasaki et al.
patent: 5414994 (1995-05-01), Cullen et al.
patent: 5522218 (1996-06-01), Lane et al.
patent: 5564283 (1996-10-01), Yano et al.
patent: 5617720 (1997-04-01), Achleitner et al.

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