F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
341/38.13
F02B 3/00 (2006.01)
Patent
CA 1109139
FUEL CONTROL WITH LEARNING CAPABILITY FOR MOTOR VEHICLE COMBUSTION ENGINE Abstract of the Disclosure A motor vehicle-combustion engine has exhaust apparatus including an exhaust sensor and fuel control apparatus determining fuel supply to the engine in accordance with an engine operating condition and a trimming factor which is a function of the engine operating condition, the value of each trimming factor corresponding to a specific value of the engine operat- ing condition and being chosen to help maintain a pre- determined exhaust content at that engine operating condition. The engine and fuel supply apparatus are characterized by a transport delay between the time a change is initiated in fuel supply and the time a resulting change in exhaust content can be sensed. The fuel supply apparatus samples successive values of the engine operating condition and, when the value of the engine operating condition is substantially the same for a time period at least equal to the transport delay and there is a difference between the exhaust content after the time period and a desired exhaust content, changes the value of the trimming factor corresponding to the value of the engine operating condition during the time period in sense to reduce the difference.
299173
General Motors Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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