Apparatus and method for controlling fuel injection in internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsShinji Sadakane, Koichi Yonezawa
Life of this patent
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Abstract
An internal combustion engine includes an in-cylinder injector for injecting fuel into a combustion chamber of the engine and an intake system injector for injecting fuel into an intake system connected to the combustion chamber. In a starting state of the engine, an electronic control unit (ECU) causes the in-cylinder injector to perform only the initial injection to the combustion chamber, and causes the intake system injector to perform fuel injections after the initial injection. As a result, favorable engine startability is ensured, and the emission of unburned components is suppressed in the engine starting state.
Claims9
An apparatus for controlling fuel injection of an internal combustion engine in a starting state, the engine including an in-cylinder injector for injecting fuel into a combustion chamber of the engine and an intake system injector for injecting fuel into an intake system connected to the combustion chamber, the apparatus comprising:
- a control section that controls the in-cylinder injector and the intake system injector, wherein, in the starting state of the engine, the control section causes the in-cylinder injector to first inject fuel, and then switches from the fuel injection through the in-cylinder injector to fuel injection through the intake system injector.
An apparatus for controlling fuel injection of an internal combustion engine in a starting state, the engine including an in-cylinder injector for injecting fuel into a combustion chamber of the engine and an intake system injector for injecting fuel into an intake system connected to the combustion chamber, the apparatus comprising:
- a control section that controls the in-cylinder injector and the intake system injector, wherein, in the starting state of the engine, the control section causes the in-cylinder injector and the intake system injector to inject fuel, and, after timing at which fuel injected from the intake system injector reaches the combustion chamber, the control section causes the in-cylinder injector to stop injecting fuel.
A method for controlling fuel injection of an internal combustion engine in a starting state, the engine including an in-cylinder injector for injecting fuel into a combustion chamber of the engine and an intake system injector for injecting fuel into an intake system connected to the combustion chamber, the method comprising:
- causing the in-cylinder injector to first inject fuel in the starting state of the engine;
- and
- then switching from the fuel injection through the in-cylinder injector to fuel injection through the intake system cylinder.
A method for controlling fuel injection of an internal combustion engine in a starting state, the engine including an in-cylinder injector for injecting fuel into a combustion chamber of the engine and an intake system injector for injecting fuel into an intake system connected to the combustion chamber, the method comprising:
- causing the in-cylinder injector and the intake system injector to inject fuel in the starting state of the engine;
- and
- causing the in-cylinder injector to stop injecting fuel after timing at which fuel injected from the intake system injector reaches the combustion chamber.
Dependencies are inferred from the claim text.