System and method for operating a rollover control system in a transition to a rollover condition
AssigneeFord Global Technologies, LLC
InventorsAlbert Chenouda Salib, Hani Abdul Ghani, Mathijs Willem Geurink, Todd Allen Brown
Life of this patent
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Abstract
A method of operating a hydraulic safety system 38 includes determining a relative roll angle, determining a relative a slip angle, determining a yaw rate and determining a pressure build rate for the hydraulic safety system 38 in response to a relative roll angle, the yaw rate, slip angle, and yaw rate. The method further includes determining a precharge pressure level in response to the relative roll rate, the slip angle and the yaw rate and controlling the safety system 38 in response to the precharge pressure level.
Claims22
A method of controlling a hydraulic system of an automotive vehicle comprising:
- determining lateral acceleration and vehicle speed;
- determining a pressure build rate in response to the lateral acceleration and vehicle speed;
- and
- precharging the hydraulic system to a predetermined pressure at the pressure build rate.
A method of controlling a hydraulic system of an automotive vehicle comprising:
- determining lateral acceleration and vehicle speed;
- enabling precharging, determining a pressure build rate, determining a precharge pressure;
- and
- precharging the hydraulic system to a predetermined pressure at the pressure build rate in response to the lateral acceleration and vehicle speed.
A method of controlling a hydraulic system of an automotive vehicle comprising:
- determining lateral acceleration and vehicle speed;
- determining a surface index;
- and
- precharging the hydraulic system to a predetermined pressure in response to lateral acceleration and a sliding surface index and vehicle speed.
A method of controlling a hydraulic system of an automotive vehicle comprising:
- determining lateral acceleration and vehicle speed;
- determining a roll velocity;
- and
- precharging the hydraulic system to a predetermined pressure in response to lateral acceleration and roll velocity and vehicle speed.
A method of controlling a hydraulic system of an automotive vehicle comprising:
- determining lateral acceleration and vehicle speed;
- determining a front linear slip angle;
- and
- precharging the hydraulic system to a predetermined pressure in response to lateral acceleration and front linear slip angle and vehicle speed.
A method of controlling a hydraulic system of an automotive vehicle comprising:
- determining lateral acceleration, steering wheel angle and vehicle speed;
- and
- precharging the hydraulic system to a predetermined pressure in response to lateral acceleration, steering wheel angle and vehicle speed.
A method of operating a hydraulic safety system comprising:
- determining a relative roll angle;
- determining a relative slip angle;
- determining a yaw rate;
- determining a pressure build rate far the hydraulic safety system in response to the relative roll angle, slip angle, and yaw rate;
- determining a precharge pressure level in response to the relative roll angle, the slip angle and the yaw rate;
- and
- controlling the safety system in response to the precharge pressure level and the pressure build rate.
A method of controlling a hydraulic system of an automotive vehicle comprising:
- determining vehicle operating parameters;
- enabling a precharge status in response to a first subset of vehicle operating parameters;
- determining a pressure build rate in response to a second subset of vehicle operating parameters;
- determining a requested pressure in response to a third subset of vehicle operating parameters;
- and
- operating a hydraulic safety system in response to the precharge status, the pressure build rate and requested pressure.
Dependencies are inferred from the claim text.