| 摘要 |
PCT No. PCT/EP85/00510 Sec. 371 Date May 30, 1986 Sec. 102(e) Date May 30, 1986 PCT Filed Oct. 1, 1985 PCT Pub. No. WO86/02053 PCT Pub. Date Apr. 10, 1986.A Servosteering system especially for motor vehicles utilizes a piston type of control valve having reaction chambers for simulating steering resistance in the course of a turn. Communication for pressure flow to the reaction chambers is via fixed throttle in series with a speed responsive variable throttle which at low speeds reduces the simulated steering resistance to low or nonexistent, as in parking, but varying to higher steering resistance at higher speeds. Additionally, a pressure reduction valve is series connected with the fixed throttles. Reaction chamber pressure is thus held to a maximum so that simulated steering resistance, is comfortable in a tight turn.
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