Title:
VALVE ROCKER ARM ASSEMBLY, VARIABLE AIR DISTRIBUTION MECHANISM, AND ENGINE
Document Type and Number:
WIPO Patent Application WO/2019/127188
Kind Code:
A1
Abstract:
A valve rocker arm assembly, a variable air distribution mechanism, and an engine. The valve rocker arm assembly comprises: an oil inlet hose (13); a rocker arm shaft (11), an oil drain channel (10), an oil return groove (8), and a first oil path (9) being provided in the rocker arm shaft (11), the oil drain channel (10) being communicated with the oil return groove (8) by means of the first oil path (9); a first rocker arm (7) and a second rocker arm (6) rotatably connected onto the rocker arm shaft (11), a piston cavity (2), an oil inlet path (4), an oil drain path (3), and a piston (1) being provided on the second rocker arm (6), the extension end of the piston (1) being used for extending out of the piston cavity (2) and being in push contact with the first rocker arm (7), one end of the oil inlet path (4) and one end of the oil drain path (3) being both communicated with the piston cavity (2), the oil inlet path (4) being connected to the oil inlet hose (13), and connection and disconnection occurring alternately between the oil drain path (3) and the oil return groove (8) along with the swing of the second rocker arm (6); a one-way opening device (5) provided in the oil inlet path (4) and/or the oil inlet hose (13); and a control valve connected to the oil drain channel (10). According to the valve rocker arm assembly, a rocker arm is divided into two sections, and the piston (1) is added onto the rocker arm. A valve can be closed at regular time or early on the basis of the change of the length of the rocker arm.
Inventors:
ZHAN QIANG (CN)
ZHU JIBIN (CN)
LI ZHIQIANG (CN)
ZHU JIBIN (CN)
LI ZHIQIANG (CN)
Application Number:
PCT/CN2017/119260
Publication Date:
July 04, 2019
Filing Date:
December 28, 2017
Export Citation:
Assignee:
WEICHAI POWER CO LTD (CN)
International Classes:
F01L1/18
Foreign References:
| CN108167044A | 2018-06-15 | |||
| DE102006007121A1 | 2007-08-23 | |||
| US4627391A | 1986-12-09 | |||
| CN102840005A | 2012-12-26 | |||
| US5758620A | 1998-06-02 | |||
| CN103266927A | 2013-08-28 | |||
| US5113813A | 1992-05-19 |
Other References:
See also references of EP 3734029A4
Attorney, Agent or Firm:
UNITALEN ATTORNEYS AT LAW (CN)
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