There are included a transmission mechanism that includes an input member driven by an engine and an output member drive-coupled to wheels and that can change a gear ratio between the input member and the output member; a clutch SSC that is interposed between an output shaft of the engine and the input member and can connect and disconnect power transmission between the output shaft of the engine and the input member of the transmission mechanism; and a control part that controls engagement and disengagement of the clutch SSC by electrical instructions. When the control part determines that a drag state of the clutch SSC has occurred (t2) when the control part outputs an electrical instruction to bring the clutch SSC into a disengaged state, the control part outputs an electrical instruction to bring the clutch SSC into a completely engaged state (t3 to t4).

A control device of a vehicle includes a power source and a power transmission device, and comprises: a state determining portion determining whether a vehicle state is a state in which a running performance of the vehicle is limited; a drive torque calculating portion calculating a drive torque as a maximum drive torque which the vehicle outputs based on the vehicle state; a remaining running distance calculating portion calculating a remaining distance as a maximum distance for which the vehicle travels based on the vehicle state; a destination setting portion setting a destination of the vehicle based on the drive torque and the remaining distance; and a driving control portion providing an automatic driving control in which acceleration/deceleration and steering are automatically performed based on the destination when it is determined that the vehicle is in a state in which the running performance thereof is limited.

A method and system for controlling a stop rotation position of an engine is described. In one example, the system includes an integrated starter/generator that may be selectively coupled to the engine. The integrated starter/generator may rotate the engine in a first direction (e.g., reverse direction) or a second direction (e.g., a forward direction) in response to a position at which the engine stops rotating following cessation of combustion in the engine.

In a hybrid vehicle, when the engine is started and caused to make a transition from a stopped state into an operating state, the control device performs an operation control of the rotary machine and an output control of the engine to increase the rotation speed of the engine so that the rotation speed reaches a target rotation speed after the transition of the engine into the operating state, determined by the shifting control, and during increasing the rotation speed, when suppression conditions further including a condition that a vehicle speed is equal to or lower than a predetermined vehicle speed, and a condition that an output request amount by a driver is smaller than a predetermined output request amount, are satisfied, the control device suppresses an increase rate of the rotation speed until a predetermined time elapses from an initiation of starting of the engine as compared with when the suppression conditions are not satisfied.

Method for heating an exhaust aftertreatment system in a hybrid vehicle comprising an internal combustion engine and an electric machine, comprising the steps of measuring an exhaust condition for the function of the exhaust aftertreatment system, determining if the exhaust condition is below a predefined limit, applying a load from the electric machine on the internal combustion engine when the temperature is below the predefined limit, in order to increase the combustion engine torque, charging the battery system of the vehicle with power from the electric machine, and disconnecting the electric machine from the internal combustion engine when the exhaust condition for the function of the exhaust aftertreatment system is above the predefined limit. The advantage of the invention is that the heating of an exhaust aftertreatment system after a cold start of a hybrid vehicle can be improved, such that the exhaust emission of the vehicle can be minimized.

A regenerative torque control unit is configured to reduce a regenerative torque and increase a rising gradient of the regenerative torque at a start of regeneration when a road surface friction coefficient acquired by a road surface friction coefficient acquisition unit is low as compared to when the road surface friction coefficient is high. Thus, it is possible to suppress occurrence of a slip on a low μ road, and it is less likely to provide a feeling of strangeness from a change between a low μ road and a high μ road.

A control target for a control device (10) is a vehicle drive device (1) including a rotating electrical machine (MG), and the control device (10) includes: an actual rotational speed obtaining part (14) that obtains an actual rotational speed (Nm) which is an actual rotational speed of the rotating electrical machine (MG); an actual torque obtaining part (15) that obtains actual torque (Tm) which is actual torque of the rotating electrical machine (MG); and a determining part (16) that determines a state of the rotating electrical machine (MG). The determining part (16) determines that the state of the rotating electrical machine (MG) is a negative torque abnormality, when the actual torque (Tm) has a negative value smaller than a torque threshold value (THt) set based on a relationship between the actual rotational speed (Nm) and target torque (Tmt) of the rotating electrical machine (MG).

Methods and systems are provided for mitigating reverse vehicle rollback. In one example, in response to a request to shift a transmission from reverse to forward when vehicle speed is elevated, vehicle brakes are applied and the actual transmission shift is delayed until the vehicle motion in the reverse direction is sufficiently decelerated. Additionally, the engine may be stalled and restarted before the transmission shift is performed.

A speed planning device is disclosed. The speed planning device may perform a method including obtaining elevation information associated with a route for a vehicle; identifying a section of the route based on the elevation information, wherein the section is associated with a change in elevation; determining subsections of the section; determining respective slopes of the subsections and respective lengths of the subsections; obtaining information identifying a mass associated with the vehicle; generating a speed plan for the vehicle to traverse the section, wherein the speed plan indicates one or more speeds at which the vehicle is to correspondingly traverse the subsections based on the respective slopes of the subsections, the respective lengths of the subsections, and the mass associated with the vehicle; and providing the speed plan to permit the vehicle to be controlled to traverse the section according to the one or more speeds of the speed plan.

A control device includes an electronic control unit. The electronic control unit is configured to perform autonomous driving of a vehicle to autonomously control at least a vehicle speed so that the vehicle speed follows a preset target vehicle speed; store a relationship between the vehicle speed and noise that is generated by a vehicle part rotated in association with running of the vehicle; determine, based on the relationship, whether the noise is equal to or larger than a preset determination threshold when the vehicle runs at the target vehicle speed; and when the electronic control unit determines that the noise is equal to or larger than the determination threshold, determine a vehicle speed at which the noise is lower than the determination threshold, and change the target vehicle speed to the vehicle speed at which the noise is lower than the determination threshold.