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AssigneeNissan Motor Co., Ltd.
InventorsJunichiro Matsumoto, Haruhiko Iizuka, Fumiaki Kato
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In a multi-cylinder fuel injection type internal combustion engine, apparatus is provided for successively inactivating one or more cylinders of the engine by inhibiting the injection pulses supplied to the fuel injection units in response to a sensed engine load. The apparatus includes a forward-backward counter which operates in downward count mode to decrease the number of active cylinders when light load is sensed and in forward count mode to increase the number of active cylinders when heavy load is sensed. A ring counter is provided to generate recylically occurring pulses on its output terminals equal in number to said cylinders successively in response to the occurrence of each injection pulse. A logic circuit is connected to the ring counter to generate injection inhibit pulses equal in number to the inactive cylinders.
Apparatus for controlling the injection of fuel to the cylinders of an electronically fuel injected internal combustion engine mounted on a roadway vehicle having means for generating injection pulses to be applied to the injection unit of each cylinder, comprising:
A method for controlling the cylinders of an electronically fuel injected internal combustion engine mounted on a roadway vehicle by successively inactivating the cylinders in response to the engine load, comprising the steps of:
Dependencies are inferred from the claim text.