Method and control system for limiting a driver acceleration request
AssigneeVolvo Car Corporation
InventorTommy Johansson
Life of this patent
Estimating the term…
Abstract
There is provided a method and control system for limiting a driver acceleration request of a vehicle. The vehicle comprises a controller arrangement that receives a driver acceleration request and determines whether the driver acceleration request is below an acceleration threshold. If so, it initiates a limiting protocol and dependent on the distance between a preceding vehicle and the host vehicle limits the acceleration of the vehicle in comparison to the driver acceleration request. The invention further relates to a vehicle comprising such as control system.
Claims15
A method for limiting a driver acceleration request, the method comprising:
- receiving a driver acceleration request;
- determining whether the driver acceleration request is below an acceleration threshold;
- and
- initiating a limiting protocol if the driver acceleration request is below the acceleration threshold, wherein the limiting protocol comprises:
- detecting a preceding vehicle of the host vehicle and obtaining sensor data associated with the distance (D) of the host vehicle to the preceding vehicle;
- comparing the sensor data to a distance threshold for safe distance between vehicles;
- outputting a vehicle acceleration order wherein acceleration of the vehicle is limited in comparison to the acceleration request if the sensor data is below the distance threshold.
A control system for sending a torque request to a powertrain of a vehicle, the system comprising:
- a controller arrangement;
- an accelerator pedal operatively connected to the controller arrangement;
- and
- at least one object detection sensor arranged to detect and measure the distance (D) to a preceding vehicle and operatively connected to the controller arrangement,
- wherein the controller arrangement is configured to
- receive accelerator pedal input;
- convert the accelerator pedal input into a driver acceleration request;
- compare the driver acceleration request to an acceleration threshold;
- initiate an acceleration limiting protocol dependent on the result of the comparison,
- wherein, if the driver acceleration request is below the acceleration threshold, the controller having a lower acceleration than the driver acceleration request when unsafe driving conditions are detected by the at least one object detection sensor, and
- wherein, if the driver acceleration request is above the acceleration threshold, the vehicle acceleration order is set equal to the driver acceleration request;
- convert the vehicle acceleration order into a torque request;
- and
- transmit the torque request to the power train of the vehicle.
A vehicle comprising:
- a control system for sending a torque request to a powertrain of a vehicle, the system comprising:
- a controller arrangement;
- an accelerator pedal operatively connected to the controller arrangement;
- and
- at least one object detection sensor arranged to detect and measure the distance (D) to a preceding vehicle and operatively connected to the controller arrangement,
- wherein the controller arrangement is configured to
- receive accelerator pedal input;
- convert the accelerator pedal input into a driver acceleration request;
- compare the driver acceleration request to an acceleration threshold;
- initiate an acceleration limiting protocol dependent on the result of the comparison,
- wherein, if the driver acceleration request is below the acceleration threshold, the controller having a lower acceleration than the driver acceleration request when unsafe driving conditions are detected by the at least one object detection sensor, and
- wherein, if the driver acceleration request is above the acceleration threshold, the vehicle acceleration order is set equal to the driver acceleration request;
- convert the vehicle acceleration order into a torque request;
- and
- transmit the torque request to the power train of the vehicle.
Dependencies are inferred from the claim text.