US 6,983,201 B2 | ||
Vehicle height adjustment system | ||
Kenya Misawa, Kanagawa (Japan) | ||
Assigned to Isuzu Motors Limited, Tokyo (Japan) | ||
Filed on May 27, 2004, as Appl. No. 10/854,263. | ||
Claims priority of application No. 2003-160340 (JP), filed on Jun. 05, 2003. | ||
Prior Publication US 2005/0010343 A1, Jan. 13, 2005 | ||
Int. Cl. B60G 23/00 (2006.01) |
U.S. Cl. 701—37 | 2 Claims |
1. A vehicle height adjustment system for adjusting a vehicle height of a vehicle by controlling supply and discharge of air
to/from an air spring, the vehicle having a body frame, and under member being disposed below the body frame and supporting
an axle, and the air spring disposed between the body frame and the under member, the vehicle height adjustment system comprising:
a height sensor;
a pair of a stopper and a stopper receiving portion at least one of which has an elastically deformable portion and both of
which are respectively fixed to one of the body frame and the under member and to the other thereof, the pair coming into
contact with each other at a vehicle height lowest position where the body frame comes at a lowest level, and the pair thus
preventing the body frame from being lowered below the vehicle height lowest position,
mode setting means for selectively setting an adjustment range setting mode for setting a vehicle height adjustment range
and a vehicle height adjusting mode for adjusting the vehicle height,
vehicle height lower limit setting means for setting a vehicle height lower limit by adding a lower limit setting predetermined
value to a vehicle height measured value when the vehicle frame is at the vehicle height lowest position while the mode setting
means is set to the adjustment range setting mode, the vehicle height setting predetermined value having a quantity equal
to or larger than a deformed quantity of the elastically deformable portion of when the body frame is at the vehicle height
lowest position, and the vehicle height measured value being outputted from the height sensor; and
air controlling means for stopping discharge of air from the air spring when the vehicle height measured value outputted from
the height sensor becomes equal to or smaller than the vehicle height lower limit while the mode setting means is set to the
vehicle height adjusting mode.
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