| 摘要 |
In the case of a hydraulic brake and steering brake device (fig.2) two master brake cylinders (45) are provided, of which one has three pistons (47, 48, 49), of which the first piston (47) in each case can be actuated by its own brake pedal (60), the pistons (47, 48, 49) of one master brake cylinder (45) enclosing three working chambers (X>>, Y<<, Z>>) arranged in series, of which the first working chamber (X<<) is connected by way of a brake line (57) to the wheel cylinder of a front wheel brake (62), the second working chamber (Y>>) by way of another brake line (78) to a wheel cylinder of a rear wheel brake (61) and in addition by way of a pressure line (81) to a chamber in the corresponding piston of the other master brake cylinder and the third working chamber (Z<<) by way of a separate pressure line (68) to the trailer brake valve (52). The master brake cylinder (45) also has a branch line (56, 79), which connects the outlets (44, 46) of the first two working chambers (X>>, Y<<) to one another, two valves (42, 50, 80 and 51, 43) being inserted into the branch line (56, 79) of which the one valve (42, 50, 80) permits an overflow of pressure medium from the first working chamber (X>>) into the second working chamber (Y<<), when the second valve (43, 51) opens the passage by means of a control element (59) and at the same time closes the outlet to the brake line (57) for the rear wheel brake (62). The control element (59) can be coupled to the brake pedal (60) ... Original abstract incomplete. <IMAGE>
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