US 11,053,821 B2
Valvetrain for diesel engine having de-compression engine brake
Majo Cecur, Rivarolo Canavese (IT)
Appl. No. 15/738,668
Filed by Eaton Intelligent Power Limited, Dublin (IE)
PCT Filed Jun. 24, 2016, PCT No. PCT/EP2016/064662
§ 371(c)(1), (2) Date Dec. 21, 2017,
PCT Pub. No. WO2016/207348, PCT Pub. Date Dec. 29, 2016.
Claims priority of application No. 1511117 (GB), filed on Jun. 24, 2015.
Prior Publication US 2018/0187579 A1, Jul. 5, 2018
This patent is subject to a terminal disclaimer.
Int. Cl. F01L 13/06 (2006.01); F01L 1/26 (2006.01); F01L 1/18 (2006.01)
CPC F01L 13/06 (2013.01) [F01L 1/18 (2013.01); F01L 1/26 (2013.01)] 22 Claims
OG exemplary drawing
1. An engine brake rocker arm assembly operable in an engine drive mode and an engine braking mode, the engine brake rocker arm assembly selectively opening first and second exhaust valves and comprising:
an exhaust valve rocker arm assembly having an exhaust rocker arm that is configured to rotate around a rocker shaft; and
an engine brake actuation assembly comprising:
an actuator assembly;
an actuator lever; and
a mechanically controlled engine brake actuator configured to move between a first position corresponding to the engine brake mode wherein the second exhaust valve is opened prior to the first exhaust valve, and a second position corresponding to the drive mode wherein the second valve is not opened prior to the first exhaust valve,
wherein the actuator assembly is hydraulically actuated and includes an actuator piston that translates within an actuation cylinder causing movement of the actuator lever and ultimately movement of the mechanically controlled engine brake actuator between the first and second positions.