F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
341/38.122
F02D 9/00 (2006.01) F02D 41/14 (2006.01) F02D 41/26 (2006.01) F02M 51/06 (2006.01) F02M 51/08 (2006.01) F02M 63/00 (2006.01)
Patent
CA 1114045
C-2840 FUEL CONTROL SYSTEM WITH CALIBRATION LEARNING CAPABILITY FOR MOTOR VEHICLE INTERNAL COMBUSTION ENGINE Abstract of the Disclosure: A memory type fuel control system provides a fuel supply rate trimmed by a trim factor recalled from memory at an address determined by predetermined engine operating conditions. The engine exhaust gas oxidizing/reducing conditions are sensed by exhaust gas sensors. A sampling circuit recurrently samples and momentarily stores the engine operating conditions in a short term memory to form a history of those conditions extending back at least by the amount of the engine transport delay time. At a later time, the exhaust gas oxidizing/reducing conditions sensed by the exhaust gas sensor is sampled, the engine operating condi- tions that produced the sampled exhaust gas condition are recalled from the short term memory, a new trimming value is determined for the recalled vehicle conditions which more closely produce a desired oxidizing/reducing condition, and such value is inserted in the main memory at the address determined by the recalled conditions. Such trim factor is then available for recall and use as the trimming factor when the engine is next operated under such conditions. - 1 -
302518
Bowler Lauren L.
Lahiff John E.
General Motors Corporation
Gowling Lafleur Henderson Llp
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