| 摘要 |
A lift axle suspension system. In a described embodiment, a lift axle suspension system includes: an axle assembly; an air spring connected between the axle assembly and a bracket attached to a vehicle frame; a trailing arm attached to the axle assembly; and a lift air spring. The lift air spring is connected between the bracket and the trailing arm, so that the axle assembly is lifted when the lift air spring is extended.
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