Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1997-06-26
2000-07-11
Denion, Thomas
Power plants
Internal combustion engine with treatment or handling of...
Methods
60285, 60276, 60289, 60293, F01N 300
Patent
active
060855177
ABSTRACT:
During the warm-up phase of a catalytic converter, the fuel-oxygen ratio in the exhaust gas upstream of the catalytic converter is regulated in dependence on the temperature of the catalytic converter. The amount of fuel is measured on the basis of an injection time into the internal combustion engine. The injection time is calculated from a basic injection time weighted with a weighting factor. The weighting factor depends on the secondary air mass which is delivered to the exhaust gas duct and on a predetermined set value for the fuel-oxygen ratio of the exhaust gas (.DELTA.value) upstream of the catalytic converter. The secondary air mass is regulated in dependence on an engine air intake.
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Patent Abstracts of Japan No. 63-179119 (Naoyuki), dated Jul. 23, 1988.
"Exhaust gas purification in Ottomotors by means of catalytic after-combustion with regulated exhause gas composition" (Grossmann et al.), ATZ Automobiltechnische Zeitschrift, vol. 75, No. 4, 1973, pp. 140-143.
Angermaier Anton
Bayerle Klaus
Denion Thomas
Greenberg Laurence A.
Lerner Herbert L.
Siemens Aktiengesellschaft
Stemer Werner H.
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