Internal-combustion engines – Charge forming device – Fuel injection system
Reexamination Certificate
2007-07-24
2007-07-24
Argenbright, T. M. (Department: 3747)
Internal-combustion engines
Charge forming device
Fuel injection system
C123S478000
Reexamination Certificate
active
10553121
ABSTRACT:
A control unit calculates a quantity of air that is taken into an engine from an output current from an air flow meter that is located downstream from a throttle valve. The control unit then determines the quantity of fuel to be injected for this quantity of air. A value obtained by multiplying by two an integral value of the quantity of air from the rise point of the quantity of air until the quantity of air reaches a peak value is used for calculating the injection quantity. This value is taken as the total integrated air intake quantity of an intake stroke, and this is then divided by a predetermined air-fuel ratio so as to provide the quantity of fuel to be injected.
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Microfilm of the specification and drawings annexed to the request of Japanese Utility Model Application No. 84576/1988 (Laid-open No. 22842/1989), Feb. 7, 1989.
Argenbright T. M.
Keihin Corporation
Squire Sanders & Dempsey L.L.P.
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