Title:
SPECIAL DRIVING CAM-BASED COMBINED ENGINE VALVE DRIVING DEVICE
Document Type and Number:
WIPO Patent Application WO/2023/092940
Kind Code:
A1
Abstract:
The present invention relates to the technical field of engine valve driving devices, and in particular, to a special driving cam-based combined engine valve driving device, comprising a valve bridge, a special driving cam, a driver, and a driving oil circuit. The driving oil circuit is intermittently communicated with a main piston hole and an auxiliary piston hole by means of closing and opening of the driving oil circuit. According to the present invention, the driver is fixed on a rocker arm shaft, the structure is simple, the cost is low, there is no motion friction between the driver and the rocker arm shaft; when the driver is not working, the special driving cam is separated from a main piston, thereby effectively reducing the abrasion and noise between the special driving cam and the main piston, and improving the power utilization rate of an engine; when the driver is working, the special driving cam automatically adjusts a driving valve by means of a hydraulic gap, the driving lift is not affected by the setting of an initial gap; moreover, every time the positive work cam rotates by one circle, the driving oil circuit automatically drains oil once, and circularly flowing engine oil does not cause impurity accumulation even when the engine oil is too dirty, so that the working stability and reliability are improved.
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Inventors:
CHUI LAP LAM (CN)
Application Number:
PCT/CN2022/089477
Publication Date:
June 01, 2023
Filing Date:
April 27, 2022
Export Citation:
Assignee:
JIANGSU JOINTEK PREC MACHINERY CO LTD (CN)
International Classes:
F01L9/12; F01L1/08; F01L1/18; F01L1/24; F01L1/26
Foreign References:
| CN113833544A | 2021-12-24 | |||
| CN113818943A | 2021-12-21 | |||
| CN114109551A | 2022-03-01 | |||
| CN112177702A | 2021-01-05 | |||
| CN112177703A | 2021-01-05 | |||
| CN204098976U | 2015-01-14 | |||
| CN102787880A | 2012-11-21 | |||
| CN107060941A | 2017-08-18 | |||
| US6386160B1 | 2002-05-14 | |||
| US6253730B1 | 2001-07-03 |
Attorney, Agent or Firm:
CHANGZHOU INNOVATION PATENT AGENCY (CN)
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