| 摘要 |
In the case of a dual circuit pressure governor (1) an inlet (4, 6) for connection to a pressure source, an outlet (5, 7) for connection to a pressure consumer and a pressure control valve (8, 9) connected between inlet and outlet and spring-loaded in the opening direction are provided respectively for each brake circuit (2, 3). At a predetermined switch pressure the pressure control valve closes and in the event of a further rise in pressure influences the outlet-side pressure according to a predetermined control characteristic. Matching boundary faces of the control pistons (10, 11) of the two pressure control valves (8, 9) remote from the outlet define one part of a common pressure medium chamber (12), which is connected to the inlet (6) of the one brake circuit (3) and is closable by a deceleration element (13) responding in the event of a predetermined deceleration. In the area of the common pressure medium chamber (12) a piston (14) preloaded by a control spring (15) is located between the two control pistons (10, 11), which preloaded piston can be brought into locking engagement with the two control pistons (10, 11) particularly when the pressure medium chamber (12) is not admitting pressure and the pressure control valves (8, 9) are open. The control spring (15) with a particularly appropriate design has a progressive force/travel characteristic in order to approximate the actual brake pressure distribution to the ideal characteristic of a particular load state of a vehicle which contains the dual circuit pressure governor according to the invention. <IMAGE>
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