A vehicle driving force control method is provided. The vehicle driving force control method includes collecting vehicle driving information, estimating speed of a driving system of a vehicle from the collected vehicle driving information and calculating speed difference between measurement speed of the driving system and the estimated speed of the driving system, obtaining torque command rate information from the calculated speed difference, limiting a variation of reference torque command determined according to the vehicle driving information based on the acquired torque command rate information to determine final torque command, and controlling operation of a vehicle driving device according to the final torque command.

A vehicle system includes an internal combustion engine including a fuel injection valve configured to inject fuel into an intake port and a throttle valve configured to control intake air amount for controlling engine torque, and being mounted on a vehicle. The vehicle system further includes a control device configured to control the vehicle. The control device includes a fuel increment controlling component that executes a fuel increment control to make the air-fuel ratio richer than the stoichiometric air-fuel ratio in a plurality of cycles started from a fuel injection start cycle at the time of engine start-up. Where a torque rate correlation value correlated with a torque rate that is a time rate of increase of the engine torque is lower, the fuel increment controlling component decreases a total fuel injection amount in the plurality of cycles.

A vehicle control method is applied to a vehicle 1 in which a front wheel 2 is driven by an engine 4, and the method includes a basic torque setting step of setting basic torque to be generated by the engine 4, based on an operational state of the vehicle 1; a deceleration torque setting step of setting deceleration torque, based on an increase in steering angle of a steering apparatus 5 mounted on the vehicle 1; a torque generation step of controlling the engine 4 so that torque based on the basic torque and the deceleration torque is generated; and a deceleration torque changing step of changing the deceleration torque, based on a vehicle-width-direction mounting position of a steering wheel 6 and an operation direction of the steering wheel 6 when the steering angle is increased. Thus, vehicle posture control is performed in consideration of the vehicle-width-direction mounting position of the steering wheel 6 and the operation direction of the steering wheel 6, so that a driver fatigue reduction effect of the vehicle posture control can be secured appropriately.

A control system for a hybrid vehicle configured to reduce an exhaust gas during deceleration of the vehicle, and to protect a motor and a battery. A control mode of the engine may be selected from: a low-power mode in which the hybrid vehicle is decelerated by reducing a torque and a power of the engine at a predetermined rate while generating the brake torque by the motor; and a high-power mode in which the hybrid vehicle is decelerated by reducing the torque and the power of the engine at a rate slower than the predetermined rate of the low-power mode while generating the brake torque by the motor.

A control device for a hybrid vehicle calculates a required drive force based on an accelerator position. The control device also calculates a required torque of the engine based on the required drive force. The control device further calculates a target torque for the engine by subjecting the required torque to a gradual change process for lessening a change in a value and performs an engine control such that an engine torque becomes equal to the target torque. The control device also performs a torque control on the motor such that a drive force of the hybrid vehicle becomes equal to the required drive force in a state in which the engine torque is equal to the target torque.

A control device for an automatic transmission includes: a failure diagnosis section for diagnosing whether or not a failure has occurred in a shift control system of the automatic transmission; a fail-safe control section for fixing the automatic transmission into a predetermined gear position in response to confirmation of the failure of the shift control system of the automatic transmission; and an oil temperature rise regulation torque reduction control section for outputting a torque reduction request to suppress torque of a vehicle driving source, based on temperature of transmission operating oil of the automatic transmission, and outputting the torque reduction request in response to satisfaction of an oil temperature condition that is set lower in oil temperature when the automatic transmission is fixed in a first gear position by the fail-safe control section than when the automatic transmission is not fixed in the first gear position.

A vehicle travel control device controls travel of a vehicle toward a target stop position. Travel state information indicates a travel state of the vehicle and includes vehicle position information indicating positions the vehicle and each wheel. Difference-in-level position information indicates a position of a difference-in-level on a travel path. The vehicle travel control device determines whether the vehicle goes beyond the target stop position when a subject wheel of the vehicle passes the difference-in-level, based on the difference-in-level position information and the vehicle position information. When determining that the vehicle goes beyond the target stop position, the vehicle travel control device changes the target stop position so as to prevent the subject wheel from passing the difference-in-level, or generates a braking force to stop the vehicle before the subject wheel passes the difference-in-level.

A vehicle operating method comprising generating a base torque reserve for an engine based on a position of an accelerator pedal and a position rate of change of the accelerator pedal, where the base torque reserve is an air reserve of the engine generated by the engine. The base torque reserve may further be generated based on one or more of a drive mode, a vehicle altitude, a battery state of charge (SOC), and a transmission gear, in at least one example.

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 controls system for a range-extended electric vehicle comprising an overall system control unit, an engine control module configured to control a range extender of the range-extended electric vehicle, power electronics configured to control a generator of the range-extended electric vehicle, and a supervisory control module coupled between the overall system control unit and the engine control module and the power electronics, the supervisory control module configured to receive information from the overall system control unit and provide commands to the engine control module and the power electronics.