Multiple cylinder engine having air-fuel ratio control means in accordance with a signal from an exhaust gas sensor
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United States of America Patent
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May 21, 1985
Grant Date -
N/A
app pub date -
Mar 8, 1982
filing date -
Mar 9, 1981
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A multiple cylinder engine including a first group of cylinders having a first intake passage which is provided with a air-fuel mixture of a predetermined ratio in accordance with the signal from an exhaust gas sensor provided in the exhaust passage from the first group of cylinders. The engine further includes a second group of cylinders having a second intake passage which is provided with a mixture having an air-fuel ratio which is of a predetermined relationship with respect to the air-fuel ratio of the mixture provided to the first group of cylinders, the predetermined relationship being determined in accordance the engine operating condition. Check valves are provided in the intake passages to prevent the mixture in the first intake passage from being mixed with that in the second intake passage so that accurate control can be ensured.
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