Methods and systems are provided for improving fuel economy and reducing undesired emissions. In one example, a method may include in response to an engine speed being within a first threshold speed of an engine idle speed during a speed reduction request with engine cylinders unfueled, maintaining the cylinders unfueled, and controlling the engine to a desired stopping position responsive to the engine speed being greater than a second threshold speed lower than the idle speed. In this way, fuel usage and emissions may be reduced and engine restart requests may be conducted at least in part via vehicle inertia.

An apparatus and a method for controlling driving of a vehicle may include a first sensor that detects whether an accelerator pedal is pressed, a second sensor that detects a number of RPM of an engine, and a controller that determines whether the vehicle coasts based on whether the accelerator pedal is pressed, and determines whether to change a gear ratio of a transmission based on the number of RPM of the engine so that the coasting distance is increased in the coasting deceleration section, improving the fuel efficiency.

A drive train includes a first gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a second gear set including a sun gear, a ring gear and planetary gears coupling the sun gear to the ring gear, a first motor/generator coupled to the first gear set, a second motor/generator coupled to the second gear set, and at least one of (a) a first clutch that selectively engages the second motor/generator with the first gear set and (b) a second clutch that selectively engages the ring gear of the second gear set with the planetary gear carrier of at least one of the first gear set and the second gear set. The planetary gears of both sets are rotatably supported by respective planetary gear carriers.

Method for operating a control device of a motor vehicle in order to predict a next stopping procedure, and control device and motor vehicle

The invention relates to a method (23) for operating a control device (11) of a motor vehicle (10) during a journey along a route (16), wherein at least one upcoming potential stopping point (25, 32, 33, 34) along the route (16) is determined, and, as the respectively determined potential stopping point (25, 32, 33, 34) is approached, a probability value (28) for a probability of a stopping procedure of the motor vehicle (10) at the stopping point (25, 32, 33, 34) is determined on the basis of a stopping model (21). The invention provides for the control device (11) to manage, as the stopping model (11), a statistical model which also provides intermediate values between 0% and 100% for the probability value and, if the probability value (28) is in a predetermined range of values (29) defining the likely occurrence of the stopping procedure, to trigger at least one predetermined operating measure (30) which is respectively configured to adapt operation of the motor vehicle (10) to the stopping procedure.

A system variably controls braking energy regeneration in a vehicle by reflecting a compensation torque depending on a difference in deceleration based on a road gradient when the vehicle travels over a downhill section or an uphill section of a road. The system includes a longitudinal sensor to receive the road gradient and compare the road gradient to a specific grade, and then compensate for the road gradient using a grade resistance value and a deceleration based value depending on a difference between deceleration manually set by a driver using a paddle shift and an actual vehicle deceleration. The system may include a controller to output a coasting torque as a correction torque that is a sum of the grade resistance value and the deceleration based value.

A tire noise testing method, a vehicle and a control device that are efficient in an actual vehicle noise test. The method of the invention is conducted while a vehicle is driven automatically. The method includes a step of operating a control unit when the vehicle reaches a predetermined position or reaches a predetermined speed, for putting the vehicle into coast-traveling with a prime mover of the vehicle in a non-driving state. The method further includes a step of operating a measuring unit for measuring the tire noise of the vehicle during the coast-traveling of the vehicle.

A braking force controller includes: a target jerk calculation unit; a first estimation unit configured to estimate an increment of braking force when a prescribed factor that increases braking force to be generated by the first actuator unit currently occurs; a second estimation unit configured to estimate the increment of the braking force when the prescribed factor occurs within a prescribed period; and a control unit configured to determine a negative jerk generated when the second actuator unit generates the braking force such that a sum of the negative jerk and the jerk generated by the first actuator unit without the prescribed factor becomes the target jerk. When the increment of the braking force due to the prescribed factor is larger than a prescribed value, the control unit corrects the determined negative jerk such that an absolute value of the negative jerk becomes smaller.

An apparatus configured for controlling starting of engine may include a clutch pedal including an ignition lock switch, a starter, a status detecting unit, an electronic clutch mounted between the engine and a transmission, a clutch controller configured to control coupling and releasing of the electronic clutch, check status of the electronic clutch and generate a clutch status data, and a vehicle controller configured to enter coasting running mode based on the vehicle status data, and, during the coasting running mode, operate the starter and restart the engine based on the clutch status data provided from the clutch controller and a switch status data of the ignition lock switch when a position value of an acceleration pedal included in the vehicle status data is equal to or greater than an acceleration reference value.

An apparatus for controlling a transmission of a vehicle includes: a determination device that decides whether to perform a forward vehicle-based deceleration tracking control, based on information of the vehicle and a forward vehicle, when the vehicle starts to coast; a calculation device that calculates a target velocity and a target distance based on a position and a velocity of the forward vehicle, when the forward vehicle-based deceleration tracking control is decided to be performed; a gear position decision device that constructs deceleration profiles for respective gears and decides a final gear based on the target velocity and the target distance calculated; and a controller that controls the transmission based on the final gear.

A control method for a Start Stop Coasting (SSC) function and an Stop and Go (ISG) function of a manual transmission vehicle includes: determining, by a controller, whether an SSC activation condition is satisfied based on vehicle running state information; stopping, by the controller, an engine and disengaging a clutch to activate the SSC function when the controller determines that the SSC activation condition is satisfied; determining, by the controller, whether a first ISG operation is satisfied based on the vehicle running state information in the state that the SSC function is activated; and deactivating, by the controller, the SSC function and activating the ISG function when the controller determines that the first ISG operation condition is satisfied.