Abstract: A cooling device is employed in a vehicle including an internal combustion engine provided with a forced-induction device and an intercooler. The cooling device includes a circulation circuit configured to circulate coolant supplied to the intercooler, an electric pump configured to operate to circulate the coolant in the circulation circuit, and processing circuitry configured to control a discharge amount of the coolant of the pump. The processing circuitry is configured to execute a control amount deriving process of deriving a control amount of the pump based on a requested flow rate and a coolant temperature, and an operation process of causing the pump to operate based on the control amount when the requested flow rate is larger than 0.

Abstract: A cooling device is employed in a vehicle including an internal combustion engine provided with a forced-induction device and an intercooler. The cooling device includes a circulation circuit configured to circulate coolant supplied to the intercooler, an electric pump configured to operate to circulate the coolant in the circulation circuit, and processing circuitry configured to control a discharge amount of the coolant of the pump. The processing circuitry is configured to execute a control amount deriving process of deriving a control amount of the pump based on a requested flow rate and a coolant temperature, and an operation process of causing the pump to operate based on the control amount when the requested flow rate is larger than 0.

Abstract: A control device for an engine, includes: an air intake controller controlling a quantity of intake air to be supplied to a catalyst provided in an exhaust passage by controlling an open degree of a throttle valve provided in an intake passage; a fuel controller controlling fuel supply to the engine, wherein the fuel controller stops the fuel supply and the air intake controller performs a first control supplying intake air to the catalyst by opening the throttle valve, for a predetermined period of time after an end of the first control, the fuel controller stops the fuel supply, and the air intake controller performs a second control decreasing the open degree of the throttle valve to an open degree smaller than that during the first control, and after the predetermined period of time passes, the fuel controller starts a third control supplying the fuel to the engine.

Abstract: An air amount control valve of a vehicle changes an intake air amount drawn into a cylinder. A fuel cutoff process stops fuel injection from a fuel injection valve when stopping combustion in the cylinder in a case in which a crankshaft is rotating. When execution of the fuel cutoff process is requested, a temperature-increase limiting process is executed to draw fresh air into a catalyst by increasing the intake air amount through control of the air amount control valve. In a case in which an anomaly occurs in driving of the air amount control valve when executing the temperature-increase limiting process, an amount of air drawn into the catalyst is increased by increasing an engine speed.

Abstract: A control device for an engine, includes: an air intake controller controlling a quantity of intake air to be supplied to a catalyst provided in an exhaust passage by controlling an open degree of a throttle valve provided in an intake passage; a fuel controller controlling fuel supply to the engine, wherein the fuel controller stops the fuel supply and the air intake controller performs a first control supplying intake air to the catalyst by opening the throttle valve, for a predetermined period of time after an end of the first control, the fuel controller stops the fuel supply, and the air intake controller performs a second control decreasing the open degree of the throttle valve to an open degree smaller than that during the first control, and after the predetermined period of time passes, the fuel controller starts a third control supplying the fuel to the engine.

Abstract: An air amount control valve of a vehicle changes an intake air amount drawn into a cylinder. A fuel cutoff process stops fuel injection from a fuel injection valve when stopping combustion in the cylinder in a case in which a crankshaft is rotating. When execution of the fuel cutoff process is requested, a temperature-increase limiting process is executed to draw fresh air into a catalyst by increasing the intake air amount through control of the air amount control valve. In a case in which an anomaly occurs in driving of the air amount control valve when executing the temperature-increase limiting process, an amount of air drawn into the catalyst is increased by increasing an engine speed.

Abstract: A hybrid vehicle includes: an engine for traveling in which a filter that removes particulate matter is attached to an exhaust system; a motor configured to generate a driving force for the hybrid vehicle; and an electronic control unit configured to restart injection of a fuel into the engine when a needed output of the engine reaches a threshold or higher while the injection of the fuel into the engine is stopped. The electronic control unit is configured to, when a filter regeneration condition that an accumulation amount of the particulate matter on the filter is equal to or more than a predetermined accumulation amount and a temperature of the filter is equal to or higher than a predetermined temperature is established, set the threshold to be higher than a threshold set when the filter regeneration condition is not established.

Abstract: During idle operation of an engine, on satisfaction of a predetermined condition including a condition that a vehicle speed is not higher than a reference value, a hybrid vehicle controls the engine with adjusting a throttle position such that a rotation speed of the engine becomes equal to target idle rotation speed or is in a predetermined rotation speed range including the target idle rotation speed. On non-satisfaction of predetermined condition, the hybrid vehicle controls the engine with setting the throttle position to a fixed value, The reference value is set to provide larger value when the rotation speed of the engine becomes equal to or lower than a predetermined rotation speed that is lower than the target idle rotation speed and is higher than a resonance rotation speed of the vehicle, compared with a value when the rotation speed of the engine is higher than the predetermined rotation speed.

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 hybrid vehicle includes: an engine for traveling in which a filter that removes particulate matter is attached to an exhaust system; a motor configured to generate a driving force for the hybrid vehicle; and an electronic control unit configured to restart injection of a fuel into the engine when a needed output of the engine reaches a threshold or higher while the injection of the fuel into the engine is stopped. The electronic control unit is configured to, when a filter regeneration condition that an accumulation amount of the particulate matter on the filter is equal to or more than a predetermined accumulation amount and a temperature of the filter is equal to or higher than a predetermined temperature is established, set the threshold to be higher than a threshold set when the filter regeneration condition is not established.

Abstract: During idle operation of an engine, on satisfaction of a predetermined condition including a condition that a vehicle speed is not higher than a reference value, a hybrid vehicle controls the engine with adjusting a throttle position such that a rotation speed of the engine becomes equal to target idle rotation speed or is in a predetermined rotation speed range including the target idle rotation speed. On non-satisfaction of predetermined condition, the hybrid vehicle controls the engine with setting the throttle position to a fixed value, The reference value is set to provide larger value when the rotation speed of the engine becomes equal to or lower than a predetermined rotation speed that is lower than the target idle rotation speed and is higher than a resonance rotation speed of the vehicle, compared with a value when the rotation speed of the engine is higher than the predetermined rotation speed.

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: According to one embodiment, there is provided a vehicle behavior control system. The vehicle behavior control system includes a behavior stabilization control module that is configured to execute a behavior stabilization control so as to stabilize a behavior of a vehicle by giving a braking force to a turning outer wheel of the vehicle based on a target braking force. The behavior stabilization control module has a target braking force setting section that sets the target braking force. The target braking force is set so as to be smaller for a second turn than for a first turn.

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: According to one embodiment, there is provided a vehicle behavior control system. The vehicle behavior control system includes a steering angle obtaining module, a steering angular velocity obtaining module, a vehicle speed obtaining module, a standard yaw rate calculation module, a limit yaw rate setting module and a behavior stabilization control module. The behavior stabilization control module executes a behavior stabilization control so as to stabilize a behavior of the vehicle by giving a braking force to a turning outer wheel of the vehicle based on a target braking force. The behavior stabilization control module sets a control intervention threshold based on the limit yaw rate and the steering angular velocity, and determines that the behavior stabilization control is to be started in case the standard yaw rate exceeds the control intervention threshold.

Abstract: According to one embodiment, there is provided a vehicle behavior control system. The vehicle behavior control system includes a behavior stabilization control module that is configured to execute a behavior stabilization control so as to stabilize a behavior of a vehicle by giving a braking force to a turning outer wheel of the vehicle based on a target braking force. The behavior stabilization control module has a target braking force setting section that sets the target braking force. The target braking force is set so as to be smaller for a second turn than for a first turn.

Abstract: According to one embodiment, there is provided a vehicle behavior control system. The vehicle behavior control system includes a steering angle obtaining module, a steering angular velocity obtaining module, a vehicle speed obtaining module, a standard yaw rate calculation module, a limit yaw rate setting module and a behavior stabilization control module. The behavior stabilization control module executes a behavior stabilization control so as to stabilize a behavior of the vehicle by giving a braking force to a turning outer wheel of the vehicle based on a target braking force. The behavior stabilization control module sets a control intervention threshold based on the limit yaw rate and the steering angular velocity, and determines that the behavior stabilization control is to be started in case the standard yaw rate exceeds the control intervention threshold.

Abstract: A vehicle includes an engine, a first MG (motor generator), a second MG, a motive power split device, and an ECU. ECU temporarily determines whether or not an imbalance abnormality has occurred based on an air-fuel ratio, and when it is temporarily determined that the imbalance abnormality is present, controls the engine such that the engine is in an idle state and formally determines whether or not the imbalance abnormality has occurred based on fluctuations in engine rotation speed. During a stop at idle, ECU determines whether or not the formal determination process of the imbalance determination is ongoing and carries out pressing control to cause the first MG to generate pressing torque Tp when the formal determination process is not ongoing and does not carry out the pressing control so as not to cause the first MG to generate pressing torque Tp when the formal determination process is ongoing.

Abstract: When an engine is in a predetermined steady operating state, a gradient accumulation average value ?Aulsa corresponding to the amount of change in the air-fuel ratio AF, detected by an air-fuel ratio sensor, over the period of time from when an upper peak is reached, at which the direction of change in the air-fuel ratio AF is inverted to when a lower peak is reached, at which the subsequent inversion of the direction occurs, is calculated (S100 to S160) and, when the calculated gradient accumulation average value ?Aulsa is greater than a predetermined threshold value ?Aref1 that is determined in advance as an upper limit (absolute value) of the range, in which it may be determined that the air-fuel ratio is even between the cylinders of the engine (S165 to S175), it is determined that the engine is in an air-fuel ratio imbalance state, in which there is an imbalance in air-fuel ratio between the cylinders of the engine.