| CPC F02D 19/029 (2013.01) [F02D 2200/0406 (2013.01)] | 11 Claims |
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1. A controller for a vehicle, the controller comprising a control circuit, wherein the controller is configured to execute
a hydrogen concentration calculating process that calculates a hydrogen concentration in a specific portion of a target region based on an operating state of an internal combustion engine, the internal combustion engine using hydrogen as a fuel, a downstream passage being a portion of an intake passage of the internal combustion engine that is downstream of a throttle valve, a connecting passage connecting a crank chamber of the internal combustion engine to the downstream passage, and the target region being a region including the crank chamber and the connecting passage, and
a pressure reduction process that, when a condition is met, in which the hydrogen concentration is greater than or equal to a predetermined determination value, causes a pressure in the downstream passage to be lower than that at a point in time when the condition is met, wherein
the vehicle includes a motor capable of applying torque to an axle for transmitting driving force to a wheel, and
the controller is configured to:
determine whether the latest required driving force is less than a motoring threshold, and in response to the latest required driving force being less than the motoring threshold, switch the drive mode of the vehicle to the motoring mode,
in the motoring mode, stop fuel supply to the cylinders and the ignition in the internal combustion engine, rotate the crankshaft with the motor, and reduce the throttle opening degree, and
in response to the required driving force being greater than or equal to the motoring threshold, reduce the rotation speed of the compressor wheel, reduce the throttle opening degree, and increase the torque of the motor.
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