Combustion control
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United States of America Patent
Stats
-
Sep 4, 1990
Grant Date -
N/A
app pub date -
Nov 14, 1988
filing date -
Nov 12, 1987
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method for controlling the combustion air ratios for IC engines using a three way catalyst. In known systems the control operation has been impaired by several factors, one being the aging of the lambda probe used for control. In order to allow for such factors the set point of the controller is adjusted under certain conditions or at certain intervals. For the adjustment of the set point the increase in the exhaust gas temperature as caused by the exothermic reaction in the catalyst is measured and employed for establishing a new set point.
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