Fuel supply system of internal combustion engine
AssigneeHitachi, Ltd.
InventorsMasami Nagano, Takanobu Ichihara
Life of this patent
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Abstract
A fuel supply system for use in an internal combustion engine, comprising: an intake passage; a downstream fuel injection valve near the port of each cylinder of the engine and downstream of the intake passage; and a controller, wherein the intake passage includes a fuel injection/evaporation device which has an upstream fuel injection valve; a heater for evaporating injected fuel; and an air passage for supplying the injected fuel with air. The controller is adapted to control the amount of fuel injected from the downstream fuel injection valve and the upstream fuel injection valve, thereby controlling the fuel-air ratio of the injected fuel.
Claims16
A fuel supply system for use in an internal combustion engine with a plurality of cylinders, comprising:
- a downstream fuel injection valve at a downstream position of an intake passage near the intake port of each of said cylinders and
- a controller, wherein
- said intake passage is equipped with a fuel injection and evaporation device which has
- an upstream fuel injection valve;
- a heater for evaporating injected fuel;
- and
- an air passage for supplying said injected fuel with air, and injection amounts of fuel injected from said downstream fuel injection valve and from said upstream fuel injection valve of said fuel injection and evaporation device are controlled by said controller so that the fuel-air ratios or fuel amounts are uniform among said cylinders.
Dependencies are inferred from the claim text.