Internal-combustion engines – Combustion chamber means having fuel injection only – Using multiple injectors or injections
Patent
1997-12-10
2000-02-29
Kwon, John
Internal-combustion engines
Combustion chamber means having fuel injection only
Using multiple injectors or injections
123304, 123575, F02B 300
Patent
active
060296232
ABSTRACT:
The invention relates to a method for producing NO.sub.x reductants by injecting hydrocarbon into a diesel engine's combustion chamber during the expansion cycle. The secondary injected hydrocarbon is formed, under appropriate conditions, into oxygenates and olefins that are suitable for reducing NO.sub.x species in the presence of conventional exhaust catalysts. The appropriate injection timing is obtained by referring to a calibration obtained by direct engine measurements.
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M. Durnholz, et al., 6 Aachener Kolloquium Fahrzeng-und Motorentechnik '97, PP661.
Dean Anthony Marion
Hershkowitz Frank
Pink Harry Stuard
Weissman Walter
Exxon Research and Engineering Co.
Kwon John
Purwin Paul E.
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