A control system, apparatus, and method integrates management of vehicle torque limits and gear shifting of a vehicle by determining future engine power requirements from the forward-looking route conditions to improve performance and drivability of the vehicle over what is achievable through default and/or currently selected torque limits and gear state shifting strategies.

A powertrain for a machine includes an internal combustion engine, an aftertreatment system including a selective catalytic reduction (SCR) catalyst for treating exhaust gases from the internal combustion engine, and a continuously variable transmission operatively coupled to the internal combustion engine. An electronic controller can measure a catalyst temperature of the SCR catalyst and can inversely adjust an engine speed and a CVT output to selectively regulate a catalyst temperature of the SCR catalyst. In an embodiment, the CVT may be a hydro-mechanical transmission including a hydrostatic transmission and a mechanical transmission.

A control system for a vehicle is provided, which includes an accelerator pedal and a steering wheel configured to be operated by a driver, an accelerator opening sensor configured to detect an accelerator opening corresponding to operation of the accelerator pedal, a steering angle sensor configured to detect a steering angle corresponding to operation of the steering wheel, and a controller configured to set an additional deceleration to be applied to the vehicle in order to control a posture of the vehicle based on the detected steering angle, when the steering wheel is turned, and apply the additional deceleration to the vehicle. The controller sets the additional deceleration based on the detected accelerator opening, in addition to the steering angle, and sets the additional deceleration larger while the vehicle is towing than while the vehicle is not towing, when the additional decelerations are compared at the same accelerator opening.

A launch control method for a hybrid vehicle includes: determining an intent of a driver to execute a launch control mode in a state in which an engine is turned-off; when the intent of the driver is to execute the launch control mode, starting the engine and controlling an engine speed; performing a slip control on a slip element of a transmission input terminal; when the engine speed is synchronized with a motor speed or a difference between the engine speed and the motor speed is less than a predetermined range, locking up an engine clutch; when the engine clutch is locked up, performing an engine pre-boosting control to raise an engine torque to a torque at which battery charging is available due to a motor; performing a take-up control on the slip element; and when the take-up control is terminated, locking up the slip element.

A control system, apparatus, and method integrates management of vehicle torque limits and gear shifting of a vehicle by determining future engine power requirements from the forward-looking route conditions to improve performance and drivability of the vehicle over what is achievable through default and/or currently selected torque limits and gear state shifting strategies.

A method for decelerating a vehicle includes actuating an electric brake motor of an electromechanical braking mechanism in an event of a failure of a hydraulic vehicle brake to produce a braking force in an event of a failure of the hydraulic vehicle brake. The method further includes producing a decelerating torque in the drive train of the vehicle in the event of the failure of the hydraulic vehicle brake. The vehicle includes a brake system. The brake system has the hydraulic vehicle brake and the electromechanical braking mechanism with the electric brake motor.

When the required driving force is larger than the first upper limit driving force, the control device sets a target compensation power of a power storage device, based on a difference between the required driving force and the first upper limit driving force. Further, the control device gradually increases a working compensation power toward the target compensation power when the gear ratio of the stepped transmission is changed, compared with an increase in the working compensation power when the gear ratio of the stepped transmission is not changed.

A method for operating a powertrain of an autonomous vehicle is described. In one example, the autonomous driver may supply a torque request and a torque or power urgency assessment to a powertrain controller. The powertrain controller may monitor vehicle control system parameters based on the driver demand torque and the torque or power urgency assessment.

In a hybrid vehicle, when a required driving force is equal to or smaller than a first upper limit driving force, a control device sets a target driving force to the required driving force. When the required driving force is larger than the first upper limit driving force, the control device sets a target compensation power of a power storage device, based on a difference between the required driving force and the first upper limit driving force. The control device sets a second upper limit driving force of a driveshaft when an upper limit power is output from an engine and the power storage device is charged or discharged with a power based on the target compensation power. The control device sets a target driving force to the smaller between the required driving force and the second upper limit driving force. This configuration suppresses deterioration of the driver's drive feeling.

A control unit of a vehicle, which is configure to travel in a first traveling mode in which power outputted from an electric motor according to electric power supplied from a generator and an electric storage device is used and in a second traveling mode in which power outputted from an internal combustion engine and the electric motor according to the electric power supplied from the electric storage device is used, includes: a vehicle speed acquisition unit; a driving force acquisition unit configured to acquire a driving force in the first traveling mode according to a vehicle speed and a driving force in the second traveling mode according to the vehicle speed; and a traveling mode control unit configured to drive the vehicle in the traveling mode capable of obtaining a large driving force at the vehicle speed based on a comparison result of the driving forces.