Control apparatus for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorMasahiro Inoue
Life of this patent
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Abstract
An object of this invention is, even when executing WGV control, to stably control an air-fuel ratio in parallel therewith. An ECU calculates a WGV correction coefficient Kv based on a degree of opening of a waste gate valve (WGV) and calculates a wall-surface fuel adherence amount FMW that is an amount of fuel adhering to a wall surface of an intake port by adding a base wall-surface adherence amount FMWB, the WGV correction coefficient Kv, a water temperature correction coefficient Kt, and a load factor change correction coefficient Kdl. The calculated wall-surface fuel adherence amount FMW is added to a fuel injection amount ETAUout. Thus, a state of a blowback amount of exhaust gas that varies with the degree of opening of the WGV can be reflected in the fuel injection amount.
Claims5
A control apparatus for an internal combustion engine, comprising:
- a fuel injection valve that injects a fuel into intake air of the internal combustion engine;
- a supercharger that has a turbine provided in an exhaust passage and a compressor provided in an intake passage of the internal combustion engine, and that supercharges intake air utilizing an exhaust pressure;
- a waste gate valve that adjusts an amount of exhaust gas that flows by bypassing the turbine of the supercharger;
- characteristics data that shows a relationship between a wall-surface fuel adherence amount that is an amount of fuel adhering to a wall surface of the internal combustion engine among the fuel injected from the fuel injection valve and a WGV parameter that is a degree of opening of the waste gate valve or an indicator corresponding to the degree of opening;
- a fuel adherence amount calculation device that acquires the WGV parameter and calculates the wall-surface fuel adherence amount from the characteristics data based on at least the WGV parameter;
- and
- a fuel adherence amount reflecting device that adds the wall-surface fuel adherence amount to a fuel injection amount that is set based on an operating state of the internal combustion engine.
Dependencies are inferred from the claim text.