Controller for vehicle and method for controlling vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorsRyusuke KURODA, Masanao IDOGAWA
Life of this patent
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Abstract
A controller for a vehicle includes a combustion stoppage period processor and a combustion period processor. The combustion stoppage period processor is configured to selectively execute one of a fuel cut process or a fuel feeding process when stopping combustion in the cylinder in a situation in which a crankshaft of the internal combustion engine is rotating. The combustion period processor is configured to execute an increase process that increases flow speed of exhaust gas in the exhaust pipe when the fuel feeding process is executed while combustion is stopped in the cylinder and then combustion is resumed in the cylinder in which the combustion has been stopped.
Claims8
A controller for a vehicle including an internal combustion engine of a spark ignition type, wherein the internal combustion engine includes a fuel injection valve configured to inject fuel, a three-way catalyst arranged in an exhaust pipe, and a particulate filter arranged in the exhaust pipe at a downstream side of the three-way catalyst and separate from the three-way catalyst, and the internal combustion engine is configured to burn an air-fuel mixture including fuel injected from the fuel injection valve in a cylinder, the controller comprising:
- a combustion stoppage period processor configured to selectively execute one of a fuel cut process or a fuel feeding process when stopping combustion in the cylinder in a situation in which a crankshaft of the internal combustion engine is rotating, wherein the fuel cut process includes stopping fuel injection of the fuel injection valve, and the fuel feeding process includes injecting fuel from the fuel injection valve and discharging the fuel in an unburned state from the cylinder into the exhaust pipe;
- and
- a combustion period processor configured to execute an increase process that increases flow speed of exhaust gas in the exhaust pipe when the fuel feeding process is executed while combustion is stopped in the cylinder and then combustion is resumed in the cylinder in which the combustion has been stopped.
A method for controlling a vehicle including an internal combustion engine of a spark ignition type, wherein the internal combustion engine includes a fuel injection valve configured to inject fuel, a three-way catalyst arranged in an exhaust pipe, and a particulate filter arranged in the exhaust pipe at a downstream side of the three-way catalyst and separate from the three-way catalyst, and the internal combustion engine is configured to burn an air-fuel mixture including fuel injected from the fuel injection valve in a cylinder, the method comprising:
- selectively executing one of a fuel cut process or a fuel feeding process when stopping combustion in the cylinder in a situation in which a crankshaft of the internal combustion engine is rotating, wherein the fuel cut process includes stopping fuel injection of the fuel injection valve, and the fuel feeding process includes injecting fuel from the fuel injection valve and discharging the fuel in an unburned state from the cylinder into the exhaust pipe;
- and
- executing an increase process that increases flow speed of exhaust gas in the exhaust pipe when the fuel feeding process is executed while combustion is stopped in the cylinder and then combustion is resumed in the cylinder in which the combustion has been stopped.
A controller for a vehicle including an internal combustion engine of a spark ignition type, wherein the internal combustion engine includes a fuel injection valve configured to inject fuel, a three-way catalyst arranged in an exhaust pipe, and a particulate filter arranged in the exhaust pipe at a downstream side of the three-way catalyst and separate from the three-way catalyst, and the internal combustion engine is configured to burn an air-fuel mixture including fuel injected from the fuel injection valve in a cylinder,
- the controller comprising circuitry, wherein the circuitry is configured to perform:
- selectively executing one of a fuel cut process or a fuel feeding process when stopping combustion in the cylinder in a situation in which a crankshaft of the internal combustion engine is rotating, wherein the fuel cut process includes stopping fuel injection of the fuel injection valve, and the fuel feeding process includes injecting fuel from the fuel injection valve and discharging the fuel in an unburned state from the cylinder into the exhaust pipe;
- and
- executing an increase process that increases flow speed of exhaust gas in the exhaust pipe when the fuel feeding process is executed while combustion is stopped in the cylinder and then combustion is resumed in the cylinder in which the combustion has been stopped.
Dependencies are inferred from the claim text.