VALVE ACTUATION SYSTEM WITH VARIABLE MODES

Title:

VALVE ACTUATION SYSTEM WITH VARIABLE MODES

Document Type and Number:

WIPO Patent Application WO/2018/223804

Kind Code:

A1

Abstract:

Disclosed is a valve actuation system with variable modes, which system belongs to the fields of engine valve actuation, cylinder deactivation and auxiliary braking. The system comprises an exhaust brake cam (101), an exhaust drive cam (102), an intake drive cam (103), and an intake brake cam (104), and each of the cams drives a valve via a push rod (401, 402, 403, and 404), a rocker arm (801, 802, 803, and 804), etc. The system further comprises an exhaust brake fulcrum assembly (301), an exhaust drive fulcrum assembly (201), an intake drive fulcrum assembly (202), and an intake brake fulcrum assembly (302) disposed between the respective cam (101, 102, 103, and 104) and a corresponding valve assembly (611, 612, 621, and 622), or between the respective cam (101, 102, 103, and 104) and a corresponding valve bridge assembly (501 and 502). By controlling the state of each fulcrum, modes such as four-stroke drive, two-stroke brake, and cylinder deactivation are realized so as to implement low fuel consumption, low emissions, and high-efficiency braking. The present invention has a compact structure, high reliability and low costs.

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Inventors:

CUI JINGCHEN (CN)
LONG WUQIANG (CN)
TIAN HUA (CN)
TIAN JIANGPING (CN)
WANG YANG (CN)

Application Number:

PCT/CN2018/086444

Publication Date:

December 13, 2018

Filing Date:

May 11, 2018

Export Citation:

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Assignee:

UNIV DALIAN TECH (CN)

International Classes:

F01L13/06; F01L9/10; F01L9/14; F02D13/06

Foreign References:

CN107023342A	2017-08-08
JPS61140108U	1986-08-30
CN104675532A	2015-06-03
CN103470330A	2013-12-25
US6293248B1	2001-09-25
US4133332A	1979-01-09

Attorney, Agent or Firm:

DALIAN XINGHAI PATENT LAW OFFICE COMPANY LIMITED (CN)

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