Limp-home method for safeguarding the catalyst of an internal combustion engine in case of a defective controlled grille shutter and vehicle thereof
AssigneeToyota Jidosha Kabushiki Kaisha
InventorHitoki SUGIMOTO
Life of this patent
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Abstract
A vehicle is disclosed which includes: an engine; a catalyst purifying exhaust gas of the engine; a grille shutter adjusting an opening area of a radiator grille; and an electronic control unit configured to: (a) control an injection quantity of fuel to be supplied to the engine, (b) detect a malfunction of the grille shutter in a state where the grille shutter is closed, and (c) increase the injection quantity when the malfunction is detected in comparison to when the malfunction is not detected.
Claims5
A vehicle comprising:
- an engine;
- a catalyst purifying exhaust gas of the engine;
- a grille shutter adjusting an opening area of a radiator grille;
- and
- an electronic control unit configured to:
- (a) control an injection quantity of fuel to be supplied to the engine,
- (b) detect a malfunction of the grille shutter in a state where the grille shutter is closed, and
- (c) increase the injection quantity when the malfunction is detected than that when the malfunction is not detected.
A control method of a vehicle including an engine, a catalyst purifying exhaust gas of the engine, a grille shutter adjusting an opening area of a radiator grille, and an electronic control unit,
- the control method comprising:
- controlling, by the electronic control unit, an injection quantity of fuel to be supplied to the engine;
- detecting, by the electronic control unit, a malfunction of the grille shutter in a state where the grille shutter is closed;
- and
- increasing, by the electronic control unit, the injection quantity when the malfunction is detected than that when the malfunction is not detected.
Dependencies are inferred from the claim text.