A method for controlling a hybrid vehicle for a cold start. The method includes determining whether a combustion engine of the vehicle is idling. The method further includes, when the engine is idling, increasing a load of a hybrid starter/generator (HSG) until a selective catalytic reduction (SCR) catalyst reaches a desirable temperature.

A vehicle control system to prevent a shortage of a braking force when temporarily stopping a vehicle during autonomous operation. The vehicle control system comprises: a prime mover; a drive wheel; a brake device that applies a brake torque to the drive wheel; an interrupting device that selectively allows a torque transmission the prime mover and the drive wheel; and a controller that operates a vehicle autonomously. The controller is configured to: detect a stop point; stop the vehicle temporarily at the stop point; disengage the interrupting device; and engages the interrupting device after confirming safety condition.

A temperature estimation module applied to a control apparatus for an internal combustion engine is configured to execute a virtual temperature estimation process that estimates a virtual temperature, which is a temperature of an exhaust purifying device under an assumption that a dither control process is not executed, based on an operation point of the internal combustion engine during execution of the dither control process. The temperature estimation module is further configured to execute an actual temperature estimation process that estimates an actual temperature of the exhaust purifying device based on a difference between the air-fuel ratio of a rich combustion cylinder and the air-fuel ratio of a lean combustion cylinder and based on the operation point of the internal combustion engine during execution of the dither control process.

A hybrid vehicle comprises an engine configured to output power for driving and equipped with an exhaust emission control device in an exhaust system thereof. The hybrid vehicle further comprises a control device. In response to a predetermined rotation request for rotating the engine with no need to output power from the engine, the control device performs a control to rotate the engine with fuel injection when a catalyst temperature in the exhaust emission control device is equal to or higher than a predetermined temperature, while performing a control to rotate the engine without the fuel injection when the catalyst temperature is lower than the predetermined temperature.

A method for operating a drive train of a motor vehicle having a combustion engine and a further machine, the two drives proportionally supplying a torque for the motor vehicle, and a temperature of an exhaust gas of the motor vehicle is ascertained and the shares of the generated torque by the combustion engine and the further machine are adapted as a function of the temperature of the exhaust gas.

A travel control apparatus is provided with: a speed controller that controls speed of a vehicle having an internal combustion engine; and a determination part that determines an emission deterioration state of the internal combustion engine. The speed controller is configured to execute burn-and-coast control that repeatedly executes burn control in which the vehicle is accelerated by driving force of the internal combustion engine, and coasting control in which the vehicle is driven by inertia, by stopping the generation of the driving force or rotation of the internal combustion engine. The speed controller is configured to execute emission suppression control that suppresses emissions by adjusting the burn-and-coast control when the emission deterioration state of the internal combustion engine is determined by the determination part.

Methods and systems are provided for reducing accumulation of condensate in an engine intake during an engine non-combusting condition. In one example, during an engine non-combusting condition, responsive to a higher than threshold ambient humidity and a lower than threshold intake manifold temperature, intake and exhaust valves of deactivatable cylinders may be closed in order to seal the cylinders and during an immediately subsequent engine combusting condition, the intake and exhaust valves of the deactivatable cylinders may be activated and combustion may be resumed in the deactivatable cylinders before starting combustion in non-deactivatable cylinders. Also, during the engine non-combusting condition, residual hot exhaust may be recirculated to the intake manifold to evaporate condensate in the intake manifold.

A vehicle includes a powertrain and a controller. The powertrain has an engine and an electric machine. The controller is programmed to, for so long as a catalytic converter temperature is less than a threshold, maintain a steady state engine torque output and adjust an electric machine torque output to satisfy driver demand. The controller is further programmed to, responsive to the catalytic converter temperature exceeding the threshold, permit adjustments of the engine torque output to satisfy the driver demand.

A vehicle control system to prevent a shortage of a braking force when temporarily stopping a vehicle during autonomous operation. The vehicle control system comprises: a prime mover; a drive wheel; a brake device that applies a brake torque to the drive wheel; an interrupting device that selectively allows a torque transmission the prime mover and the drive wheel; and a controller that operates a vehicle autonomously. The controller is configured to: detect a stop point; stop the vehicle temporarily at the stop point; disengage the interrupting device; and engages the interrupting device after confirming safety condition.

Provided is a control apparatus of a vehicle, which includes a transmission mode switching control program for controlling the automatic transmission to switch between an automatic transmission mode and a manual transmission mode, a coast idle stop control program for performing a coast idle stop control in which the engine is stopped automatically and the automatic transmission is changed into a neutral position while the vehicle is traveling, and a coast idle control program for performing a coast idle control in which the engine is made running idle and the automatic transmission is changed into the neutral position while the vehicle is traveling.