Abstract: A single valve compression release bridge brake is provided. The single valve compression release bridge brake includes a braking piston (160) integrated into an inner end of a valve bridge (400) which is located under a rocker arm (210) of an engine. The braking piston (160) is slidably disposed in a braking piston bore (190) opened downwards from the inner end of the valve bridge (400). The lower end of the braking piston (160) is connected to the inner exhaust valve (3001). Oil is supplied to the braking piston bore (190) in the valve bridge (400). The inner end of the valve bridge (400) above the braking piston (160) is pushed upwards against the rocker arm (210) by oil pressure, and a hydraulic linkage is formed between the braking piston (160) and the valve bridge (400).

Abstract: A single valve compression release bridge brake is provided. The single valve compression release bridge brake includes a braking piston (160) integrated into an inner end of a valve bridge (400) which is located under a rocker arm (210) of an engine. The braking piston (160) is slidably disposed in a braking piston bore (190) opened downwards from the inner end of the valve bridge (400). The lower end of the braking piston (160) is connected to the inner exhaust valve (3001). Oil is supplied to the braking piston bore (190) in the valve bridge (400). The inner end of the valve bridge (400) above the braking piston (160) is pushed upwards against the rocker arm (210) by oil pressure, and a hydraulic linkage is formed between the braking piston (160) and the valve bridge (400).

Abstract: A reset rocker arm braking method and device are provided. A braking piston hole and an oil drain piston hole which are communicated with a braking oil supply passage are arranged inside a rocker arm, and an oil drain passage is arranged between the braking piston hole and the oil drain piston hole. When the rocker arm is driven by a braking cam lobe of a cam, an exhaust valve is opened to realize braking by a braking piston inside the braking piston hole. When the rocker arm is driven by an exhaust cam lobe of the cam, the rocker arm drives an oil drain piston in the oil drain piston hole to open the oil drain passage to discharge oil, and the lift profile of the exhaust valve is reset and reduced to a conventional exhaust valve lift profile without an engine braking.

Abstract: A combined rocker arm apparatus for actuating auxiliary valve of engine, comprises an auxiliary actuator, a main rocker arm and a secondary rocker arm. The auxiliary actuator comprises an auxiliary rocker arm and an auxiliary cam. The auxiliary rocker arm and the main rocker arm are mounted on the rocker arm shaft in parallel. The auxiliary rocker arm is connected to the auxiliary cam at one end and adjacent to the secondary rocker arm at the other end. The auxiliary rocker arm includes a drive mechanism which provided with a piston. In the non-operation mode of the drive mechanism, the piston is drawn back, then the auxiliary rocker arm is disconnected with the secondary rocker arm; in the operation mode of the drive mechanism, the piston is pushed out, then the auxiliary rocker arm is connected with the secondary rocker arm.

Abstract: An auxiliary valve actuating mechanism of an engine includes a first valve actuating mechanism and an auxiliary valve actuating mechanism. The auxiliary valve actuating mechanism comprises an auxiliary cam, an auxiliary rocker-arm shaft, an auxiliary rocker arm, an eccentric rocker arm bushing and a bushing actuation device. One end of the auxiliary rocker arm constitutes a motion pair with the auxiliary cam and the other end is above the valve. The bushing actuation device actuates the eccentric rocker arm bushing to rotate between an operating position and a non-operating position.

Abstract: A fixed chain engine braking device includes a brake box, a driving mechanism and a braking mechanism. One upright blind hole and one horizontal blind hole are placed in the brake box, and the upright blind hole intersects the horizontal blind hole orthogonally. The driving mechanism includes a rolling ball and/or a driving piston placed in the horizontal blind hole, the braking mechanism includes a braking plunger placed in the upright blind hole. A fluid passage is placed in the brake box, and the fluid passage is communicated with the entry of the horizontal blind hole.