Title:
LOCKING SUSPENSION SYSTEM
Document Type and Number:
WIPO Patent Application WO2004041561
Kind Code:
A3
Abstract:
A method and apparatus for controlling frame rise on a heavy duty truck having a frame (11), a drive axle (25) connected to the frame, and selectively lockable suspension component (10) disposed therebetween for maintaining the relative position therebetween. Signals indicative of at least one of the following vehicle operating parameters: engine speed, brake pressure, vehicle speed, air bag pressure, steering wheel angle, vehicle height, or throttle position are monitored and a predicted thrust is calculated that will be applied to the drive axle based on the monitored signals. The selectively lockable suspension component is locked if the predicted thrust exceeds a predetermined threshold and is also controlled with respect to other operating parameters such as whether vehicle brakes are applied, any instantaneous change in torque, vehicle operating speed, and the length of time the selectively lockable suspension component has been locked.
Inventors:
SVARTZ BJORN O
WHITE DARRIS
WHITE DARRIS
Application Number:
PCT/US2003/034060
Publication Date:
September 02, 2004
Filing Date:
October 27, 2003
Export Citation:
Assignee:
VOLVO TRUCKS NORTH AMERICA INC (US)
International Classes:
B60G17/005; B60G17/015; B60G17/052; (IPC1-7): B60G17/01; B60G17/005; B60G21/045
Foreign References:
| US5513875A | 1996-05-07 | |||
| US5692587A | 1997-12-02 |
Other References:
See also references of EP 1567366A4
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