Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1987-12-10
1989-04-11
Argenbright, Tony M.
Internal-combustion engines
Charge forming device
Fuel injection system
123478, F02D 4134, F02D 4110
Patent
active
048196045
ABSTRACT:
A method of controlling the supply of fuel to an internal combustion engine having first and second fuel injection valves arranged in the intake passage downstream and upstream of the throttle valve, respectively, both being upstream of the intake manifold wherein the first and second fuel injection valves are selectively operated to supply fuel to the cylinders in dependence on operating conditions of the engine. Fuel is supplied to a plurality of cylinders of the engine through the first fuel injection valve alone when the engine is operating in a predetermined low load condition. In a middle/high load middle speed region of the engine, a substantially constant minimum required quantity of fuel is supplied through the first fuel injection valve, and simultaneously a quantity of fuel appropriate to the middle/high load middle speed region is supplied through the second fuel injection valve. In a high load high speed region of the engine, if a time interval of generation of a signal generated at predetermined crank angles of the engine is longer than the fuel injection period of the second fuel injection valve, a quantity of fuel corresponding to a difference therebetween is supplied through the first fuel injection valve and simultaneously a quantity of fuel corresponding to the time interval is supplied through the second fuel injection valve.
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Koike Yuzuru
Tsukimura Kiyoshi
Argenbright Tony M.
Honda Giken Kogyo Kabushiki Kaisha
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