| 摘要 |
<p>A slidable gate assembly is to be mounted on an exhaust brake having a housing with aligned inlet and outlet apertures to allow the passage of exhaust gas through the housing. The flow of exhaust gas is controlled by a slidable valve gate forming part of the slidable gate assembly and having an exhaust gas relief passage therethrough. The valve gate is mounted on one end of the piston rod and at that same end there is provided a closure device for opening and closing the exhaust gas relief passage in the valve gate. A biasing force applied through the piston rod, preferably by a coil spring, biases the closure device towards a closed condition of the exhaust gas relief passage. The piston rod is movable relative to the valve gate to open the exhaust gas relief passage through the valve gate in dependance upon the force applied by the biasing spring. The closure device is forced to an open condition by the pressure of exhaust gas applied through the exhaust gas relief passage to the closure device. With this construction the biasing spring can be located at a position remote from the body of the exhaust brake so as to be operable below the setting temperature of the spring.</p> |
