B60W2540/106

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.

PROPULSION CONTROL SYSTEM WITH VARYING AGGRESSIVENESS OF RESPONSE

A propulsion control system provides different levels of jerk as a function of operator inputs and actual measured operational parameters in a machine. The system includes a power source, a continuously variable transmission (CVT) coupled to an output of the power source, a plurality of input/output devices, a plurality of sensors configured to generate signals indicative of operational parameters of the machine, and a controller communicatively coupled with the power source, the CVT, the input/output devices, and the sensors. The controller includes a database stored in a memory with a plurality of jerk values mapped to different operations of the machine selected from at least one of activation of a brake by an operator for an aggressive stop, a directional shift request from an operator to select one of forward, reverse, or neutral, and a set of operating conditions of the machine indicative of a blade load shedding mode. A jerk selection module is programmed to select at least one of a jerk value, an acceleration limit value, and a deceleration limit value based on a current operation of the machine. A speed command generating device is programmed to integrate a selected jerk value twice to generate a desired speed command. A proportional-integral-derivative (PID) control device is configured to continuously calculate a control error between the desired speed command and an actual speed of the machine. An output command control module is configured to output a control command for implementing a change in an output torque to at least one of the power source and the CVT to reduce the control error.

Vehicle control device
10315654 · 2019-06-11 · ·

Provided is a vehicle control device including an operation amount obtaining unit, a first setting unit, a second setting unit, and a third setting unit. The operation amount obtaining unit obtains a driver's driving operation amount. The first setting unit sets a first target value for vehicle travel control based on the driving operation amount obtained by the operation amount obtaining unit. The second setting unit sets a second target value for controlling the vehicle travel by automated control. The third setting unit sets a third target value for actually controlling the vehicle travel by synthesizing the first target value and the second target value based on the driving operation amount or the first target value.

Powersplit hybrid powertrain with overdrive clutch

A hybrid vehicle powertrain includes an internal combustion engine, first and second electric machines, traction wheels, and an output shaft having meshing gears configured to establish a final drive ratio between the output shaft and the traction wheels. The powertrain additionally includes a first mechanical linkage and a second mechanical linkage. The first mechanical linkage is configured to selectively transmit engine torque to the fraction wheels and selectively transmit electric machine torque to the traction wheels. The second mechanical linkage is configured to selectively transmit engine torque to the traction wheels. When transmitting engine torque to the wheels, the second mechanical linkage defines a fixed overdrive speed relationship between the engine and the fraction wheels.

ADAPTIVE DRIVEFORCE FOR SPEED LIMIT CONTROL

Methods, systems, devices and apparatuses for a driveforce speed control system for a vehicle. The driveforce speed control system includes a sensor configured to detect a speed limit, and an electronic control unit (ECU) coupled to the sensor. The ECU is configured to calculate a road load and a mass condition, determine a speed limit based on the sensor, and activate a speed control based on the road load, the mass condition, and the speed limit.

Device and Method for Controlling Vehicle
20240199014 · 2024-06-20 ·

A device for controlling a first vehicle includes a sensor device, a processor, and a travel control device. The sensor device generates a speed control command associated with a first rate of speed change of the first vehicle. The processor is configured to detect a target vehicle, wherein a distance between the first vehicle and the target vehicle is reduced based on the speed control command being executed; and generate a control signal for changing, at a second rate of speed change of the first vehicle, a speed of the first vehicle to a target speed during a speed changing period. The travel control device changes the speed of the first vehicle based on a control signal. A difference between the target speed and a speed of the target vehicle is less than or equal to a preset speed difference threshold.

Control Device for Operating a Road-Coupled All-Wheel Drive Vehicle
20240190263 · 2024-06-13 ·

A control device for operating a road-coupled all-wheel drive vehicle, includes at least one electronic control unit, at least one first electric drive motor as a primary motor assigned to a primary axle and at least one second electric drive motor as a secondary motor assigned to a secondary axle. The control unit has a torque-limiting module which, if an expected change of the all-wheel drive factor is detected which can lead to a transition from single-axle operation to dual-axle operation on the basis of a defined signal that runs ahead the filtered driver's request signal, the torque limits for the individual target torques of the electric drive motors can be preset in a sudden manner according to the predetermined changed all-wheel drive factor before the individual target torques per se are set.

Automatic speed control device, automatic speed control method, and automatic speed control program
12024169 · 2024-07-02 · ·

An automatic speed control device includes: an upper limit speed setting part for setting a first speed as an upper limit speed during running on a main road and setting a second speed slower than the first speed as the upper limit speed during running on a connecting road; a target speed setting part for setting a target speed to less than or equal to the upper limit; and a speed control part for controlling a vehicle speed based on the target speed. The speed control part makes the vehicle accelerate according to a depression amount of the accelerator pedal when the pedal is depressed. The upper limit speed setting part sets the upper limit speed to a speed faster than the second speed and less than the first speed when the vehicle speed has become faster than the second speed due to depression of the pedal.

POWERTRAIN LASH MANAGEMENT
20190152483 · 2019-05-23 ·

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.

METHOD TO OPTIMIZE ENGINE OPERATION USING ACTIVE FUEL MANAGEMENT

A method for operating an internal combustion engine comprises providing a vehicle having an internal combustion gasoline engine including multiple cylinders and wherein the engine is operating in a deactivated cylinder mode, receiving a torque request if a cylinder reactivation torque smoothing mode is active, setting a variable torque ratio to 1.0 if the torque request is greater than a fast exit threshold torque, setting the variable torque ratio to 0.0 if the torque request is less than a slow exit threshold torque, setting the variable torque ratio to a value between 0.0 and 1.0 if the torque request is between the fast exit threshold torque and slow exit threshold torque, and calculating a component of final engine output torque.