Patent classifications
B60W2540/106
Sailing stop control method and control device for vehicle
A sailing stop control method for a vehicle including a transmission and a friction engaging element in series between an engine and drive wheels includes performing a sailing stop control to coast by shutting off power transmission by the friction engaging element, stopping the engine based on satisfaction of a sailing enter condition, restarting the engine upon satisfaction of a sailing exit condition during coasting by the sailing stop control, executing a shift control to set a target speed ratio of the transmission to a highest speed ratio smaller than a coasting speed ratio in normal time and satisfying engine exhaust performance after the restart of the engine if the sailing exit condition is a brake pedal depressing operation, and re-engaging the friction engaging element, if input and output revolution speeds of the friction engaging element are determined to be a synchronous revolution speed after end of the shift control.
System for suctioning braking particles with preemptive control
System for suctioning braking particles from a friction braking system of a vehicle, the suction system including a negative-pressure source, a suction mouth, a filter, a conduit connecting the suction mouth to the negative-pressure source, a control unit configured to control the negative-pressure source, the suction system further including a stream of information originating from a computer that controls a motor-generator of a driving/braking system of the vehicle, the control unit being configured to control the negative-pressure source preemptively before the actual activation of the friction braking, the control unit controlling the negative-pressure source as a function of the activation of electromagnetic braking or other parameters, and associated method.
Declutch clunk mitigation through torque intervention
A method for mitigating clunk in a driveline of a vehicle system during a declutch event includes determining a current torque request of a prime mover based on an accelerator pedal position of an accelerator pedal of the vehicle system. The method includes determining a clutch pedal position and determining, via a controller, a clutch pedal speed based on a change of the clutch pedal position over time. The method further includes modifying, via the controller, the current torque request to obtain a modified torque request based on the clutch pedal position and the clutch pedal speed such that a stored potential energy in the driveline is minimized by a time that the clutch pedal of the vehicle system is disengaged during the declutch event.
DECLUTCH CLUNK MITIGATION THROUGH TORQUE INTERVENTION
A method for mitigating clunk in a driveline of a vehicle system during a declutch event includes determining a current torque request of a prime mover based on an accelerator pedal position of an accelerator pedal of the vehicle system. The method includes determining a clutch pedal position and determining, via a controller, a clutch pedal speed based on a change of the clutch pedal position over time. The method further includes modifying, via the controller, the current torque request to obtain a modified torque request based on the clutch pedal position and the clutch pedal speed such that a stored potential energy in the driveline is minimized by a time that the clutch pedal of the vehicle system is disengaged during the declutch event.
Powertrain lash management
Methods and systems are provided for adjusting powertrain torque in a vehicle based on driver intent. Driver intent is inferred based on foot motion inside a foot well monitored via a foot well region sensor and changes in clearance outside the vehicle monitored via a range sensor. By adjusting powertrain torque based on operator foot motion and traffic movements outside the vehicle, frequency of lash transitions can be reduced and lash transition initiation can be adjusted based on expected changes in torque demand.
HEV engine start vibration reduction system
A hybrid electric power-split vehicle, equipped with a continuously variable transmission coupling an electric motor/generator (EM) with a combustion engine (CE), includes systems and methods that reduce possible resonant noise and vibration during CE startup, by improved EM control, to generate compensating EM torque to counter act such possible resonant noise and vibration. The systems and methods include predetermined baseline CE operating condition (OC) cranking torque profiles stored as OC grids (SOCGs). A start profile is generated from selected cranking torque SOCGs, and also from selected historical start OCGs (HOCGs) of prior engine and/or CE starts, which include prior start noise and vibration metrics along with prior start OCs and related parameters. The start profile is calibrated using a blend factor that is generated from comparisons of SOCGs, and utilized to generate a feed-forward torque signal that adjusts EM torque to reduce the startup noise and vibration resonances.
Vehicle drive assistance system and vehicle drive assistance method
A vehicle drive assistance system is provided, which includes a processor configured to execute a required driving ability estimating module to estimate a driver's required driving ability required for driving a vehicle based on a traffic environment around the vehicle and drive assistance provided to the driver by the vehicle, a current driving ability estimating module to estimate a driver's current driving ability, and a changing module to perform increase processing in which the required driving ability is increased when the current driving ability is higher than the required driving ability.
CONTROL SYSTEM FOR HYBRID VEHICLE
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.
CONTROL OF A VEHICLE EMERGENCY BRAKING SYSTEM
A control system (100) for an emergency braking system (200) using at least one transmitter/receiver sensor (210) comprising: means for causing automatic transition, from a first state (310) in which the emergency braking system (200) is inactive to a second state (320) in which the emergency braking system (200) is active, in dependence upon satisfaction of a first group of different necessary conditions (412).
SYSTEMS AND METHODS FOR VEHICLE ACCELERATION EVENT PREDICTION INHIBIT
Methods and systems for inhibiting an acceleration event prediction includes determining a current vehicle operating condition. An acceleration event is predicted based on a plurality of stored predictions that match the current vehicle operating condition. A determination is made whether to inhibit the acceleration event prediction. The acceleration event prediction is permitted to modify an acceleration event powertrain control such that a powertrain control occurs. A driver noncompliance with the acceleration event powertrain control is stored as a machine learning data and the current vehicle operating condition is stored as machine learning data upon the driver noncompliance. The stored machine learning data is used to determine whether to inhibit a future acceleration event prediction.