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 control system, when a first traveling mode using torque of an electric motor is switched to a second traveling mode using torque of an engine, a controller performs an engine start control by applying an engagement pressure to a first clutch and by cranking the engine by the electric motor, so as to start the engine. Specifically, the controller obtains a predicted start time and an actual start time by the engine start control, and corrects the engagement pressure so as to decrease the engagement pressure applied to the first clutch at a subsequent time of starting the engine, when the actual start time is shorter than the predicted start time.

A control apparatus for an electric vehicle includes a first motor (traveling motor) for traveling, a battery (high-voltage battery), a second motor (generator motor) for electricity generation, an engine (rotary engine), a first controller (engine ECU), a second controller (motor ECU), and a sensor (voltage-current sensor). The second controller is configured to start the engine by causing the second motor to perform power running, cause the second motor to perform electricity generation driving such that the battery is charged, and adjust a stop position of the engine by causing the second motor to perform power running subsequently to a stop of the engine by the first controller in a case where a state of charge of the battery becomes high and the second motor finishes the electricity generation driving.

Engine combustion mode-switching transitions are controlled through a coordination control of an electric machine and a multi-combustion mode engine coupled to each other with a hybrid propulsion system by following predetermined combustion mode-switching strategies and control algorithms.

A revolution position of an engine is set to a revolution position suitable for a start. A control apparatus for an electric vehicle includes an engine, a motor which generates electricity, a battery, a first controller which drives the engine, a second controller which drives the motor, and a sensor. The second controller confirms a relative position relationship between a revolution position of the engine and a rotation position of the motor by acquiring information of the revolution position of the engine from the first controller during the electricity generation driving by the motor and monitors the revolution position of the engine based on the relative position relationship and a signal from the sensor, and the second controller checks the stop position of the engine through the monitoring of the revolution position of the engine when the motor finishes the electricity generation driving.

A control device for a vehicle includes a catalyst temperature raising control part configured to perform catalyst temperature raising control raising a temperature of an exhaust purification catalyst of an internal combustion engine while driving in an EV mode on an EV section of a driving route when driving over the driving route in accordance with a driving plan when, while driving on the EV section: (i) the temperature of the exhaust purification catalyst is less than a predetermined temperature raising reference temperature that is higher than an activation temperature at which an exhaust purification function of the exhaust purification catalyst is activated, (ii) the exhaust purification catalyst was previously heated while driving on the driving route, and (iii) there is a CS section to be driven on while in a CS mode in a remaining driving section of the driving route after the EV section.

A control unit is provided for a vehicle having an internal combustion engine with a shaft, which can be coupled to an electric machine or decoupled from the electric machine. The control unit is designed to couple the electric machine to the internal combustion engine during an engine stop of the internal combustion engine. The control unit causes the electric machine to guide the shaft of the internal combustion engine. The control unit determines that a speed of the guided shaft is equal to or less than a speed threshold value and, in response thereto, decouples the electric machine from the internal combustion engine, such that the internal combustion engine stops without being guided by the electric machine.

A control system for a vehicle that executes a feedback control properly to adjust a speed of a predetermined rotary member to a target speed. A controller is configured to: calculate an amount of change in a torque applied to the rotary member by one of the torque devices, in accordance with operating conditions of the torque devices; and calculate an amount of change in the torque applied to the rotary member by another one of the torque devices, based on a target amount of change in a synthesized torque of the torques of the torque devices and the amount of change in the torque applied to the rotary member by one of the torque devices.

A vehicle vibration control device includes: a motor generator connected via a motor shaft to a power transmission path between a crankshaft of an engine and a drive axle that transmits a drive torque to a tire; and a motor generator control portion executing control of an output torque which is actually output by the motor generator. The motor generator control portion includes a damper torque calculation section that acquires information on a crank angle and a motor angle to calculate a damper torque generated by a damper, an explosion cycle calculation section, a reverse phase torque calculation section, a delay time calculation section, a compensation time calculation section, a first compensation time calculation section, a torque correction amount calculation section, and a command output section.

A system for adjusting performance of an electric motor in a hybrid vehicle during a combustion event. The system includes a combustion engine including a cylinder, an electric motor including an electric motor shaft and connected to the combustion engine via a drive shaft, and an inverter controller connected to the electric motor. The inverter controller includes an electronic processor configured to receive a rotational position of the electric motor shaft, determine, based on the rotational position of the electric motor shaft, whether a combustion event is occurring in the cylinder, and when a combustion event is occurring in the cylinder, preform one selected from the group comprising increase torque produced by the electric motor and decrease the torque produced by the electric motor.