| 摘要 |
A hydraulic rack and pinion steering assembly comprises an elongate rack bar having opposite ends connectable with a pair of steerable vehicle wheels, and having rack teeth in meshing engagement with a pinion. The assembly further comprises an inner sleeve, an outer sleeve extending over the inner sleeve, and a piston tube supported for longitudinal movement telescopically between the inner and outer sleeves. A piston is fixed to the piston tube for movement with the piston tube between the inner and outer sleeves. The rack bar extends through the inner sleeve, and is connected to the piston tube to move with the piston tube relative to the inner and outer sleeves. First and second variable volume hydraulic chambers have first and second movable end walls. The effective piston surface area defined by the first movable end wall is equal to the effective piston surface area defined by the second movable end wall.
|
