Abstract: A vehicle includes an engine having a particulate matter removal filter to remove particulate matter, in an exhaust system, and a control device to control the engine such that the vehicle travels in a mode selected from a plurality of modes including a first mode in which both fuel efficiency and ride quality are achieved and a second mode in which the engine is operated at a load higher than a predetermined load. When an accumulation quantity of the particulate matter in the particulate matter removal filter is equal to or more than a threshold, the control device notifies a driver that traveling in the second mode is recommended. When the driver selects the second mode in response to the notification, it is possible to restrain an uncomfortable feeling to be given to the driver, even if the engine is operated at a high load for regenerating the filter.

Abstract: A motor vehicle includes an engine having, in an exhaust system thereof, a particulate matter removal filter that removes particulate matters, a shift device capable of performing a sequential shift operation, and an electronic control unit that controls the engine such that the motor vehicle runs in accordance with a driver's operation. The electronic control unit is configured to perform control in such a manner as to cause the vehicle to run without carrying out a shift even when the sequential shift operation is performed by the driver, if a deposition amount of particulate matters deposited in the particulate matter removal filter is equal to or larger than a predetermined amount. Thus, the particulate matter removal filter can be restrained from being overheated through the supply of a large amount of air to the particulate matter removal filter with the predetermined amount or more of particulate matters deposited therein.

Abstract: A vehicle includes an engine having a particulate matter removal filter to remove particulate matter, in an exhaust system, and a control device to control the engine such that the vehicle travels in a mode selected from a plurality of modes including a first mode in which both fuel efficiency and ride quality are achieved and a second mode in which the engine is operated at a load higher than a predetermined load. When an accumulation quantity of the particulate matter in the particulate matter removal filter is equal to or more than a threshold, the control device notifies a driver that traveling in the second mode is recommended. When the driver selects the second mode in response to the notification, it is possible to restrain an uncomfortable feeling to be given to the driver, even if the engine is operated at a high load for regenerating the filter.

Abstract: A hybrid vehicle includes: an engine; a first motor configured to perform cranking of the engine; a second motor configured to receive or output power for traveling; an electricity storage device configured to supply electricity to the first motor and second motor or to be supplied with electricity from the first motor and the second motor; and an electronic control unit. The electronic control unit is configured to select, at an initiation stage of start-up of the engine, a damping map based on a vehicle speed at the start of cranking of the engine, from among a plurality of damping maps respectively corresponding to vehicle speeds set in advance to reduce vibration during the start-up of the engine. The electronic control unit is configured to control the first motor such that cranking of the engine is performed using the selected damping map until the start-up of the engine is completed.

Abstract: A motor vehicle includes an engine having, in an exhaust system thereof, a particulate matter removal filter that removes particulate matters, a shift device capable of performing a sequential shift operation, and an electronic control unit that controls the engine such that the motor vehicle runs in accordance with a driver's operation. The electronic control unit is configured to perform control in such a manner as to cause the vehicle to run without carrying out a shift even when the sequential shift operation is performed by the driver, if a deposition amount of particulate matters deposited in the particulate matter removal filter is equal to or larger than a predetermined amount. Thus, the particulate matter removal filter can be restrained from being overheated through the supply of a large amount of air to the particulate matter removal filter with the predetermined amount or more of particulate matters deposited therein.

Abstract: A hybrid vehicle includes an engine in which a particulate matter removing filter configured to remove particulate matter is disposed in an exhaust system; a motor configured to receive and output power; a driving circuit configured to drive the motor; an electric power storage device that is connected to the driving circuit; and a control unit configured to control the engine and the driving circuit. The control unit is configured, when a high temperature request for increasing a temperature of the particulate matter removing filter to a prescribed value or higher is issued, to control the driving circuit such that a loss of the driving circuit increases and to control the engine such that power greater than power at a time when the high temperature request is not issued is output from the engine.

Abstract: When an output of a braking force to a driving shaft is needed, and a needed braking force can be output by regenerative drive of the second motor, the engine self-sustainably operates, the regenerative drive of the second motor is performed to cause the second motor to output the needed braking force to the driving shaft. When the needed braking force cannot be output by the regenerative drive of the second motor, the needed braking force is output to the driving shaft by the regenerative drive of the second motor and motoring of the engine that performs fuel cut using the first motor. When a filter regeneration condition is established, an allowable input electric power is set to be lower than that of when the filter regeneration condition is not established.

Abstract: When an output of a braking force to a driving shaft is needed, and a needed braking force can be output by regenerative drive of the second motor, the engine self-sustainably operates, the regenerative drive of the second motor is performed to cause the second motor to output the needed braking force to the driving shaft. When the needed braking force cannot be output by the regenerative drive of the second motor, the needed braking force is output to the driving shaft by the regenerative drive of the second motor and motoring of the engine that performs fuel cut using the first motor. When a filter regeneration condition is established, an allowable input electric power is set to be lower than that of when the filter regeneration condition is not established.

Abstract: An ECU is mounted on a vehicle including an engine and a motor that can generate cranking torque applied to a rotation shaft of the engine. Where a request for starting the engine is not issued, the ECU determines whether the engine is during coasting or not. The ECU changes cranking target torque in accordance with engine rotation speed. In this way, engine rotation speed during cranking can be reduced to and remain in the optimum region where misfire and resonance can be avoided.

Abstract: An ECU is mounted on a vehicle including an engine and a motor that can generate cranking torque applied to a rotation shaft of the engine. Where a request for starting the engine is not issued, the ECU determines whether the engine is during coasting or not. The ECU changes cranking target torque in accordance with engine rotation speed. In this way, engine rotation speed during cranking can be reduced to and remain in the optimum region where misfire and resonance can be avoided.

Abstract: A hybrid vehicle includes an engine that is mounted on a vehicle body via an engine mount, and outputs power to a drive shaft coupled to an axle; a motor that outputs power to the drive shaft; a battery that supplies electric power to the motor; and a control unit configured to start the engine when a torque of the drive shaft becomes equal to or larger than a start threshold value while the vehicle travels with the engine stopped, the start threshold value being set such that the start threshold value is equal to or smaller than a rated corresponding torque and a difference between the start threshold value and the rated corresponding torque tends to increase as a rotational speed of the drive shaft decreases, and the rated corresponding torque being a torque of the drive shaft corresponding to a rated maximum torque of the motor.

Abstract: In response to a starting instruction of an engine at a gearshift position of a gearshift lever set to a parking position, a motor is controlled to form a fixed magnetic field on a stator of the motor at the level that is capable of preventing rotation of a rotating shaft against a torque applied to the rotating shaft within magnitude less than or equal to magnitude of a rotation restriction control torque based on a temperature of the motor and a discharge power from the battery, a motor is controlled to perform the motoring of the engine while the motor outputs a torque that makes a torque applied to the rotating shaft less than or equal to magnitude of the rotation restriction control torque, and the engine is controlled to be started with the motoring.

Abstract: At a time of stopping operation of an engine, after elapse of a preset time period since start of self-sustaining operation of the engine at a stop rotation speed Nstop, the drive control sets a torque command Tm1* of a motor MG1 to a rotation speed-decreasing, vibration-suppressing torque and starts decreasing a rotation speed Ne of the engine (steps S100, S140, S150, S170, and S180). The rotation speed-decreasing, vibration-suppressing torque is set to smoothly decrease the rotation speed of the engine and suppress the potential vibration caused by the decreased rotation of the engine. A correction torque Tmod is set based on a crank angle CA and an engine water temperature Tw at the rotation speed Ne of the engine decreasing to a preset reference speed Nref (step S200). The torque command Tm1* of the motor MG1 is then set by adding the set correction torque Tmod to the rotation speed-decreasing, vibration-suppressing torque (step S210).

Abstract: A vehicle control device for a hybrid vehicle, which equipped with at least an internal combustion engine and a rotary electrical machine that reduces the shock that is imparted to a vehicle when the internal combustion engine starts. The vehicle control device detects the running state of the vehicle and, if it is determined that the internal combustion engine will be started, adjusts the ignition timing according to the running state of the vehicle. The control device also improves the responsiveness of the hybrid vehicle when increased acceleration is required.

Abstract: In response to a change of a gearshift position from a parking position to a driving position, the control system of the invention connects a power shaft with a driveshaft linked to drive wheels (steps S310 and S380), while performing rotation restriction control to form a fixed magnetic field on a stator of a second motor and thereby prohibit rotation of a rotor in the second motor (step S300). This arrangement desirably restrains rotation of the power shaft and accordingly prevents the occurrence of a shock in the course of connection of the power shaft with an axle.

Abstract: In a power train in which a differential mechanism is coupled with a transmission mechanism, a transmission member is free with no engagement in a second shift portion when a P position or an N position is selected, and a ring gear thereby becomes free in a power split device. During an idle operation with such a shift position, a behavior of an engine rotation speed is retained in a stable manner in the power split device which functions as the differential mechanism through a power supply control (lock control) such that a rotor of a second MG coupled with the ring gear is locked by an electromagnetic force, and then, a learning control of an idle speed control is appropriately implemented.

Abstract: A vehicle control device for a hybrid vehicle, which equipped with at least an internal combustion engine and a rotary electrical machine, that reduces the shock that is imparted to a vehicle when the internal combustion engine starts. The vehicle control device detects the running state of the vehicle and, if it is determined that the internal combustion engine will be started, adjusts the ignition timing according to the running state of the vehicle. The control device also improves the responsiveness of the hybrid vehicle when increased acceleration is required.

Abstract: A torque command (Tht) used in the calculation of a voltage command (Vht) of a voltage-up converter is generated by adding an upper limit value (Tc_max) of damping control that can be set by a motor drive device with a target drive torque (Tbt). Accordingly, the torque command (Tht) exhibits a waveform absent of variation, differing from a torque command (Tcmd) that is generated by adding damping torque generated based on revolution count variation component with the target drive torque (Tbt). Therefore, the voltage command (Vht) calculated based on the torque command (Tht) exhibits a waveform absent of variation. Accordingly, increase in current passing through the voltage-up converter caused by variation in the voltage command (Vht) can be suppressed. As a result, power loss at the voltage-up converter is reduced and operation of the motor at high efficiency can be realized. Further, the voltage-up converter can be protected from element fracture.

Abstract: When a shift lever is in a parking position, a rotation restriction index Jm2 is set based on a drive state of an engine or a first motor (S130, S160, S240, and S290). A current value based on the rotation restriction index Jm2 is set to a current command of the d axis in an electric angle when motoring of the engine in a stop state is started and a second motor is controlled such that the magnetic field direction of a stator of the second motor is fixed. This method can appropriately prevent a power shaft from rotating.

Abstract: In response to a starting instruction of an engine at a gearshift position of a gearshift lever set to a parking position, a motor is controlled to form a fixed magnetic field on a stator of the motor at the level that is capable of preventing rotation of a rotating shaft against a torque applied to the rotating shaft within magnitude less than or equal to magnitude of a rotation restriction control torque based on a temperature of the motor and a discharge power from the battery, a motor is controlled to perform the motoring of the engine while the motor outputs a torque that makes a torque applied to the rotating shaft less than or equal to magnitude of the rotation restriction control torque, and the engine is controlled to be started with the motoring.