Internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsYuuichi Katou, Makoto Tomimatsu
Life of this patent
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Abstract
An internal combustion engine includes fuel injection valves and an ECU. In the internal combustion unit, predetermined injection is performed when the bed temperature of a catalyst is lower that a predetermined temperature. In the predetermined injection, fuel is injected from a first fuel injection valve, from among the fuel injection valves, within the valve opening period of an intake valve, and fuel is injected from a second fuel injection valve, from among the fuel injection valves, within the valve opening period of an exhaust valve. In the internal combustion engine, a first injection amount is specifically injected from the first fuel injection valve in the predetermined injection.
Claims4
An internal combustion engine comprising:
- a first injection unit injecting fuel into an intake passage communicating with a combustion chamber;
- a second injection unit injecting fuel into the combustion chamber;
- an intake valve and an exhaust valve arranged with respect to the combustion chamber;
- and
- a control unit performing a predetermined injection such that when a bed temperature of a catalyst for purifying exhaust gas discharged from the combustion chamber is lower than a predetermined temperature, fuel is injected from the first injection unit, from among the first and second injection units, during a valve opening period of the intake valve, and fuel is injected from the second injection unit, from among the first and second injection units, during a valve opening period of the exhaust valve.
Dependencies are inferred from the claim text.