Combined rocker arm apparatus for actuating auxiliary valve of engine

A combined rocker arm device for producing an auxiliary valve event of an engine, the engine comprising a conventional valve actuator, the conventional valve actuator comprising a cam, a rocker arm shaft, a conventional rocker arm and a valve, wherein the combined rocker arm device comprises:

• an auxiliary actuator,
• a transition rocker arm, wherein the auxiliary actuator acts on the transition rocker arm, and the transition rocker arm acts on the valve, and wherein the auxiliary actuator comprises an auxiliary rocker arm and an auxiliary cam, the auxiliary rocker arm and the conventional rocker arm are mounted on the rocker arm shaft side by side, one end of the auxiliary rocker arm is connected to the auxiliary cam, and the other end of the auxiliary rocker arm is placed adjacent to the transition rocker arm;
• the auxiliary rocker arm comprises an actuation mechanism being provided with an actuation piston, the actuation mechanism comprises an non-operating position and an operating position;
• in the non-operating position, the actuation piston of the actuation mechanism retracts, and the auxiliary rocker arm is separated from the transition rocker arm;
• and in the operating position, the actuation piston of the actuation mechanism extends, and the auxiliary rocker arm is connected to the transition rocker arm, and
• an auxiliary spring located between the auxiliary rocker arm and the transition rocker arm.