Abstract: A controller includes an engine controlling section and a motor-generator controlling section. The controller is configured to use the engine controlling section and the motor-generator controlling section to execute an intermittent stop control, a temperature increase control, an intermittent stop prohibition control, and a motoring control. The intermittent stop control automatically stops and restarts operation of an internal combustion engine. The temperature increase control increases the temperature of a filter in the exhaust passage to a temperature at which PM can be burned. The intermittent stop prohibition control prohibits stop of the operation of the internal combustion engine by the intermittent stop control until the temperature increase control is completed. The motoring control drives the output shaft of the internal combustion engine by the motor-generator, thereby forcibly rotating the internal combustion engine.

Abstract: A catalyst having an oxygen storage capacity is provided in an exhaust passage of an internal combustion engine. A catalyst temperature calculating device calculates an oxygen storage amount of the catalyst to a value greater than or equal to zero and less than or equal to than a maximum value based on an amount of oxygen and an amount of unburned fuel components in a fluid flowing into the catalyst. A temperature calculation process calculates a temperature of the catalyst assuming that an amount of temperature rise of the catalyst is larger when an increase amount of the oxygen storage amount is large than when the increase amount of the oxygen storage amount is small in a case where the oxygen storage amount increases.

Abstract: An engine system includes an engine that, a fuel supply device, and an electronic control unit. The electronic control unit is configured to control the fuel supply device and to perform operation control of the engine by adjusting an injection ratio between fuel injection from an in-cylinder injection valve and a port injection valve according to the operation state of the engine. The electronic control unit is configured to perform imbalance determination. The electronic control unit is configured to change a region of fuel injection from a first fuel injection region to a second fuel injection region when the electronic control unit determines that a lean imbalance is occurred with respect to the fuel injection in which the fuel injection from the port injection valve is performed.

Abstract: An engine system includes an engine that, a fuel supply device, and an electronic control unit. The electronic control unit is configured to control the fuel supply device and to perform operation control of the engine by adjusting an injection ratio between fuel injection from an in-cylinder injection valve and a port injection valve according to the operation state of the engine. The electronic control unit is configured to perform imbalance determination. The electronic control unit is configured to change a region of fuel injection from a first fuel injection region to a second fuel injection region when the electronic control unit determines that a lean imbalance is occurred with respect to the fuel injection in which the fuel injection from the port injection valve is performed.

Abstract: A control system may include a first electronic control unit programmed to control the engine and a second electronic control unit programmed to control the rotary electric machine. The second electronic control unit may be programmed to output an engine command signal to the first electronic control unit through communication with the first electronic control unit. The first electronic control unit may be programmed to control the engine in accordance with the engine command signal received from the second electronic control unit, when a communication abnormality with the second electronic control unit does not occur; and to execute fixing operation control in which the engine is controlled such that at least one of speed, output power, and output torque of the engine becomes a corresponding fixed value, when the communication abnormality with the second electronic control unit occurs.

Abstract: A control device of an engine includes an adjustment mechanism and a controller. The adjustment mechanism is configured to adjust an intake air amount. The controller is configured to save a first learning value in a volatile storage medium, the first learning value being obtained by learning an operation amount of the adjustment mechanism when the engine is idle. The controller is configured to control the adjustment mechanism according to the first learning value. The controller is configured to save a second learning value in a non-volatile storage medium, the second learning value being equal to the first learning value. The controller is configured to correct the first learning value using the second learning value after the first learning value is cleared.

Abstract: In the case where a throttle valve has a sticking abnormality, a hybrid vehicle performs failsafe operation (limp home mode) with fixing the throttle valve to an opener position (S100) and sets a restoration diagnosis cooling water temperature T1 such as to decrease with a decrease in state of charge SOC of a battery (S120). When cooling water temperature Tw of the engine becomes equal to or higher than the restoration diagnosis cooling water temperature T1, the hybrid vehicle performs sticking restoration diagnosis to determine whether the throttle valve is restored from the sticking abnormality (S150). This allows for earlier diagnosis of whether the throttle valve is restored from the sticking abnormality at the lower state of charge SOC of the battery and enables the hybrid vehicle to return to normal operation at an earlier time. As a result, this ensures the more adequate sticking restoration diagnosis.

Abstract: When a starting point water temperature Twst is equal to or lower than a threshold value Twref1, catalyst warm-up control is executed, and when a cooling water temperature Tw becomes higher than the threshold value Twref1 or an operation time top of an engine becomes equal to or higher than a threshold value topref1, the control of the engine is shifted from the catalyst warm-up control to normal control. When the starting point water temperature Twst is higher than the threshold value Twref1 and is equal to or lower than a threshold value Twref2, PN suppression control is executed, and when the cooling water temperature Tw of the engine becomes higher than the threshold value Twref2 or the operation time top of the engine becomes equal to or higher than a threshold value topref2, the control of the engine is shifted from the PN suppression control to the normal control.

Abstract: A control device, which is applied to an in-vehicle internal combustion engine equipped with an intake valve variable timing mechanism that varies the valve timing for an intake valve, and which intermittently operates the in-vehicle internal combustion engine by automatically stopping/restarting the engine, wherein the electronic control unit does not permit the engine operation to be automatically stopped when the intake valve variable timing mechanism malfunctions at an operating position closer to the advanced angle than the operating position for the most retarded angle of the variable range for the valve timing of intake valve, and thus preventing increased engine vibration and misfires when the engine automatically restarts, which are caused by a malfunction of the variable valve mechanism.

Abstract: When a starting point water temperature Twst is equal to or lower than a threshold value Twref1, catalyst warm-up control is executed, and when a cooling water temperature Tw becomes higher than the threshold value Twref1 or an operation time top of an engine becomes equal to or higher than a threshold value topref1, the control of the engine is shifted from the catalyst warm-up control to normal control. When the starting point water temperature Twst is higher than the threshold value Twref1 and is equal to or lower than a threshold value Twref2, PN suppression control is executed, and when the cooling water temperature Tw of the engine becomes higher than the threshold value Twref2 or the operation time top of the engine becomes equal to or higher than a threshold value topref2, the control of the engine is shifted from the PN suppression control to the normal control.

Abstract: A control system may include a first electronic control unit programmed to control the engine and a second electronic control unit programmed to control the rotary electric machine. The second electronic control unit may be programmed to output an engine command signal to the first electronic control unit through communication with the first electronic control unit. The first electronic control unit may be programmed to control the engine in accordance with the engine command signal received from the second electronic control unit, when a communication abnormality with the second electronic control unit does not occur; and to execute fixing operation control in which the engine is controlled such that at least one of speed, output power, and output torque of the engine becomes a corresponding fixed value, when the communication abnormality with the second electronic control unit occurs.

Abstract: A hybrid vehicle according to one embodiment of the present invention has: an internal combustion engine including an in-cylinder fuel injection valve and a crank ventilation system; a motor; a power transmission mechanism connecting a drive shaft of the vehicle and the engine to allow torque transmission therebetween and connecting the drive shaft and the motor to allow torque transmission therebetween; and a control device. The control device controls output torques of the engine and the motor so as to exert an equal torque to a user requiring torque on the drive shaft. Furthermore, the control device stops the engine when an engine stop condition that included a condition that a coolant water temperature is equal to or higher than an intermittency allowance temperature, and start the engine when an engine start condition is satisfied.

Abstract: A hybrid vehicle includes an engine; a motor, a catalyst used to purify exhaust gas of the engine, and an ECU configured to control the engine and the motor according to an output request of the hybrid vehicle, execute a target engine output keeping control for controlling an engine output such that the, target engine output keeps at a predetermined value during warm-up of the catalyst, and set an engine speed to a first engine speed when the target engine output keeping control is executed, the first engine speed being lower than a lower limit engine speed at which the engine is operated without executing the target engine output keeping control.

Abstract: In the case where a throttle valve has a sticking abnormality, a hybrid vehicle performs failsafe operation (limp home mode) with fixing the throttle valve to an opener position (S100) and sets a restoration diagnosis cooling water temperature T1 such as to decrease with a decrease in state of charge SOC of a battery (S120). When cooling water temperature Tw of the engine becomes equal to or higher than the restoration diagnosis cooling water temperature T1, the hybrid vehicle performs sticking restoration diagnosis to determine whether the throttle valve is restored from the sticking abnormality (S150). This allows for earlier diagnosis of whether the throttle valve is restored from the sticking abnormality at the lower state of charge SOC of the battery and enables the hybrid vehicle to return to normal operation at an earlier time. As a result, this ensures the more adequate sticking restoration diagnosis.

Abstract: Provided is an abnormality determination device of a vehicle including an engine and a first motor that is configured to output a torque to an output shaft of the engine, the abnormality determination device determining an output abnormality of dropping output of the engine in the vehicle. The abnormality determination device has an abnormality determination unit that determines that an output abnormality of the engine has occurred when an actual torque that is estimated, based on a torque of the first motor, as a torque actually output from the engine falls below a lower limit of an allowable range for a target torque to be output from the engine, and when an amount of increase in a rotational speed of the engine is smaller than a threshold value for misdetermination suppression, which is a threshold value that is larger as the target torque is higher.

Abstract: A hybrid vehicle includes an engine; a motor, a catalyst used to purify exhaust gas of the engine, and an ECU configured to control the engine and the motor according to an output request of the hybrid vehicle, execute a target engine output keeping control for controlling an engine output such that the, target engine output keeps at a predetermined value during warm-up of the catalyst, and set an engine speed to a first engine speed when the target engine output keeping control is executed, the first engine speed being lower than a lower limit engine speed at which the engine is operated without executing the target engine output keeping control.

Abstract: If an amount of fuel is not increased and a direct injection air-fuel ratio learning has not been completed, fuel injection from a port fuel injection valve is stopped without executing EGR, fuel injection control is executed such that the fuel injection occurs only from an in-cylinder fuel injection valve, and the direct injection air-fuel ratio learning is executed. If the amount of the fuel is increased, the fuel injection from the port fuel injection valve is stopped without executing EGR and air-fuel ratio feedback control, and an engine and an EGR valve are controlled such that fuel injection occurs only from the in-cylinder fuel injection valve.

Abstract: A hybrid vehicle includes an engine, a motor generator configured to control the revolution speed of the engine, and an ECU configured to control ignition timing of the engine. The ECU modifies, in the case where the revolution speed of the engine is not controlled by the motor generator, the ignition timing for startup of the engine to a further timing retarding side, as compared to the case where the revolution speed of the engine is controlled by the motor generator.

Abstract: A control device of an engine includes an adjustment mechanism and a controller. The adjustment mechanism is configured to adjust an intake air amount. The controller is configured to save a first learning value in a volatile storage medium, the first learning value being obtained by learning an operation amount of the adjustment mechanism when the engine is idle. The controller is configured to control the adjustment mechanism according to the first learning value. The controller is configured to save a second learning value in a non-volatile storage medium, the second learning value being equal to the first learning value. The controller is configured to correct the first learning value using the second learning value after the first learning value is cleared.

Abstract: If an amount of fuel is not increased and a direct injection air-fuel ratio learning has not been completed, fuel injection from a port fuel injection valve is stopped without executing EGR, fuel injection control is executed such that the fuel injection occurs only from an in-cylinder fuel injection valve, and the direct injection air-fuel ratio learning is executed. If the amount of the fuel is increased, the fuel injection from the port fuel injection valve is stopped without executing EGR and air-fuel ratio feedback control, and an engine and an EGR valve are controlled such that fuel injection occurs only from the in-cylinder fuel injection valve.