NO to NO.sub.2 conversion control in a compression injection eng

Details NO to NO.sub.2 conversion control in a compression injection eng NO to NO.sub.2 conversion control in a compression injection eng

1997-12-10

1999-09-07

Argenbright, Tony M.

Internal-combustion engines

Combustion chamber means having fuel injection only

Using multiple injectors or injections

60274, 123304, F02D 4134, F01N 320

Patent

active

059470801

ABSTRACT:
The invention is directed towards a method for adjusting the NO.sub.2 to NO content of a diesel engine's exhaust without affecting engine performance. The NO.sub.2 to NO ratio is adjusted by varying the amount and tinting of secondary hydrocarbon injection during the engine's expansion stroke. The appropriate amount of secondary injected hydrocarbon and the appropriate injection timing are determined from calibration values obtained by direct engine measurements and the desired NO.sub.2 :NO ratio.

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M. Durnholz, et al., 6 Aachener Kolloquium Fahrzeng-und Motorentechnik '97, PP661-688.

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