A coasting regeneration control method of a vehicle equipped with a continuously variable valve duration (CVVD) engine includes: determining, by an engine control unit (ECU), whether a current state of the vehicle satisfies coasting regeneration conditions; and entering, by the ECU, a coasting regeneration mode and performing regenerative braking when the current state of the vehicle satisfies the coasting regeneration conditions, in which when the coasting regeneration mode is entered, a throttle valve is fully opened so that the amount of intake air of the engine is maximized, a CVVD target duration is controlled to be maximized, and a closing time of an intake valve is delayed after a start point of time of a compression stroke, thereby decreasing pumping loss of the engine.

A computer-implemented method for clutch start control of an internal combustion engine, ICE, in a vehicle is described. When the vehicle is travelling on a road with the ICE being shut off, topographic data representative of the topography of an upcoming road segment is acquired. A driving scenario for at least a part of the upcoming road segment is predicted based on the acquired topographic data. A gear is selected based on the predicted driving scenario. The ICE is started on the selected gear before or when the vehicle reaches said part of the road segment.

A braking/driving force control system, during control for maintaining a target vehicle speed, performs fuel cut and then, when a required braking/driving force for maintaining the target vehicle speed reduces, makes a downshift while fuel cut is continued. The braking/driving force control system causes a brake to generate a braking force such that the sum of a braking/driving force that a powertrain generates and the braking force that the brake generates agrees with the required braking/driving three. Thus, good fuel efficiency and riding comfort are obtained.

A method is disclosed for controlling gearshifts in a transmission of a motor vehicle. Devising a shifting strategy of the gearshift takes into account the operation of a sustained-action braking device (10). To organize gearshifts in an optimum way having regard to the operation of the sustained-action braking device (10), at the beginning of the operation of the sustained-action braking device (10) it is examined with what starting criterion the operation of the sustained-action braking device (10) was initiated. Depending on the starting criterion identified, a current workload of the sustained-action braking device (10) is compared against an associated threshold value. Alternately, a gearshift is carried out directly to a lowest possible gear of the motor vehicle transmission (4). If the comparison of the current workload of the sustained-action braking device (10) exceeds the threshold value, then the shifting strategy is adapted.

A coasting regeneration control method of a vehicle equipped with a continuously variable valve duration (CVVD) engine includes: determining, by an engine control unit (ECU), whether a current state of the vehicle satisfies coasting regeneration conditions; and entering, by the ECU, a coasting regeneration mode and performing regenerative braking when the current state of the vehicle satisfies the coasting regeneration conditions, in which when the coasting regeneration mode is entered, a throttle valve is fully opened so that the amount of intake air of the engine is maximized, a CVVD target duration is controlled to be maximized, and a closing time of an intake valve is delayed after a start point of time of a compression stroke, thereby decreasing pumping loss of the engine.

Methods and systems are for securing a vehicle. In an exemplary embodiment, the vehicle includes a body, a drive system, a braking system, and a processor. The drive system is configured to generate movement of the body, and includes a motor. The braking system includes friction brakes that provide friction braking. The processor is disposed onboard the vehicle, coupled to the motor, and is configured to at least facilitate: determining that a loss in friction braking has occurred while the vehicle is being stopped; and providing instructions to the motor for providing propulsion torque, thereby securing the vehicle at a stop, when it is determined that the loss in friction braking has occurred; wherein the motor is further configured to execute the instructions provided by the processor for providing the propulsion torque.

A braking/driving force control system, during control for maintaining a target vehicle speed, performs fuel cut and then, when a required braking/driving force for maintaining the target vehicle speed reduces, makes a downshift while fuel cut is continued. The braking/driving force control system causes a brake to generate a braking force such that the sum of a braking/driving force that a powertrain generates and the braking force that the brake generates agrees with the required braking/driving three. Thus, good fuel efficiency and riding comfort are obtained.

The braking force control device detects an impossible state where one or some of the actuators are temporarily unable to generate a negative driving force, and a predictive state where one or some of the actuators are predicted to become unable to generate a negative driving force. Every time the coasting state occurs before establishment of the impossible state and after establishment of the predictive state, the braking force control device gradually increases the negative driving force generated by the corresponding one or ones of the actuators. Even when the coasting state occurs in the impossible state, the braking force control device does not cause the corresponding one or ones of the actuators to generate a driving force. Every time the coasting state occurs after the impossible state, the braking force control device gradually decreases the negative driving force generated by the corresponding one or ones of the actuators.

A method of controlling one or more vehicles of a platoon of vehicles includes determining in response to information of forward route conditions of the platoon an opportunity to mitigate braking losses, performing regenerative braking in response to a deceleration output of an cooperative adaptive cruise control (CACC) system, adjusting an inter-vehicle distance of the CACC system, and performing at least one of the regenerative braking and the adjusting the inter-vehicle distance.

A control device, system and method that distribute a braking request to at least one of a powertrain and a brake based on a braking request by driver operation and a braking force that is generable by the power train. When the braking request is larger than the braking force that is generable by the powertrain, the device, system and method instruct a controller of the powertrain to generate the braking force that is generable by the powertrain, and to instruct a controller of the brake to generate a braking force corresponding to a difference between the braking request and the braking force that is generable by the powertrain.