Controller for internal combustion engine
AssigneeToyota Jidosha Kabushiki Kaisha
InventorTatsuhiko Nagashima
Life of this patent
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Abstract
A controller for an internal combustion engine acquires a rotation speed, a load factor, and a current torque from sensors mounted on a vehicle. The controller calculates a predicted torque and a predicted blow-by gas amount based on the rotation speed and the load factor. The controller calculates an estimated richness ratio indicating a ratio at which an air-fuel mixture in a combustion chamber has been enriched by blow-by gas, based on the predicted blow-by gas amount and a difference between the current torque and the predicted torque. The controller corrects a fuel injection amount of the fuel injection valve based on the estimated richness ratio.
Claims5
A controller for an internal combustion engine, the internal combustion engine being a hydrogen engine that is mounted on a vehicle and uses hydrogen as fuel, the controller comprising processing circuitry configured to perform:
- acquiring a rotation speed, a load factor, and a current torque of the internal combustion engine from sensors mounted on the vehicle;
- calculating a predicted torque and a predicted blow-by gas amount based on the rotation speed and the load factor;
- calculating an estimated richness ratio indicating a ratio at which an air-fuel mixture in a combustion chamber has been enriched by blow-by gas, based on the predicted blow-by gas amount and a difference between the current torque and the predicted torque;
- and
- correcting a fuel injection amount of the fuel injection valve based on the estimated richness ratio.
Dependencies are inferred from the claim text.