Measuring and testing – Testing of shock absorbing device – In situ vehicle suspension
Patent
1986-11-28
1988-05-17
Levy, Stewart J.
Measuring and testing
Testing of shock absorbing device
In situ vehicle suspension
340 52R, G01M 1704
Patent
active
047442395
ABSTRACT:
Off-highway trucks generally rely on a suspension system which employs a plurality of gas-over-liquid type struts. These struts are critical to proper operation of the vehicle such that a single collapsed strut can have serious manifestations in structural damage, tire wear, and payload monitor accuracy. These consequences can be mitigated by an accurate and reliable strut monitor. Pressure type sensors are disposed on each of the struts and their pressure is monitored during three critical phases of operation. These phases include static, loading, and roading modes and each mode requires a distinct method for detecting a collapsing strut. The presence of a collapsing strut, detected by any of the three methods, is communicated to the vehicle operator whereby operation can be immediately suspended. The system avoids the serious consequences of vehicle operation with a collapsed strut by providing the operator with immediate and positive feedback on the condition of the struts.
REFERENCES:
patent: 2638777 (1953-05-01), Sadler
patent: 4317105 (1982-02-01), Sinha et al.
patent: 4426683 (1984-01-01), Kissell
patent: 4458234 (1984-07-01), Brisard
patent: 4468650 (1984-08-01), Barbee
patent: 4635739 (1987-01-01), Foley et al.
Gudat Adam J.
Kyrtsos Christos T.
Lutgen F. Paul
Caterpillar Inc.
Levy Stewart J.
Morgan Terry D.
Raevis Robert R.
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