Variable valve lift mechanism of internal combustion engine
A valve lift and internal combustion engine technology, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problems of valve phase change, limited lift adjustment range, and inability to adjust to zero lift, so as to maintain phase stability change effect
Inactive Publication Date: 2015-09-09
常州嵘驰发动机技术有限公司
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Problems solved by technology
[0005] According to the driving device disclosed in Chinese patent application 200910203761.6, although the lift of the internal combustion engine valve can be adjusted, because it adopts the method of adjusting the lever ratio of the rocker arm mechanism, the adjustment range of the lift is limited. Especially the function of adjusting to zero lift cannot be realized
[0006] In addition, according to the driving device disclosed in Chinese patent application 200910203761.6, although the lift of the internal combustion engine valve can be adjusted, the phase of the valve is also changed when the valve lift is adjusted.
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[0042] The horizontal, vertical, up, down, left, and right involved in the following description of specific embodiments of the present invention are all referred to in the accompanying drawings, especially the specific embodiment schematically shown in Fig. 1 . That is, the horizontal direction in Figure 1 is the horizontal direction in the description, the vertical direction in Figure 1 is the vertical direction in the description, the upward direction in Figure 1 is the upper in the description, and the downward direction in Figure 1 is the in the description next. The horizontal, vertical, up, down, left, and right in the description are only for the convenience of understanding the specific implementation manner of the present invention.
[0043] attached Figure 1a is a schematic perspective view of the first embodiment according to the present invention. exist Figure 1a An internal combustion engine valve 6 is shown in FIG. 2 , which is also referred to in the subsequ...
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The invention relates to a variable valve lift mechanism of internal combustion engine. The variable valve lift mechanism comprises a driver (1), a first transmission member (2) provided with a bearing face (20) thereon, a second transmission member (3) comprising a bearing shaft (30) and a roller (31) arranged on the bearing shaft, and a lift adjustor (4) comprising a rotating shaft (40) which comprises a rotating center (P4), a guide face (41) and a cavity (43). The parts are arranged in such a manner that the distance between the guide face of the lift adjustor and the rotating center (P3) of the bearing shaft of the second transmission member and the distance between the bearing face of the first transmission member and the rotating center (P3) of the bearing shaft of the second transmission member equal the radius (R3) of the bearing shaft of the second transmission member; the driver is pressed against the roller of the second transmission member; in the non-driving section of the driver, the rotating center of the bearing shaft and the rotating center of the rotating shaft coincide; in the driving section of the driver, the bearing shaft can move along the guide face.
Description
technical field [0001] The invention relates to a variable valve lift mechanism of an internal combustion engine, comprising: a driving member; a first transmission member provided with a supporting surface; a second transmission assembly, the second transmission assembly includes a support shaft and is arranged on the The roller on the support shaft; the lift adjustment member, the lift adjustment member includes a rotating shaft, and the rotating shaft has a rotating center, a guide surface and a cavity. Background technique [0002] For internal combustion engines, because they often operate under partial load conditions, the coefficient of residual exhaust gas is relatively high, so how to improve the stability of engine combustion, reduce the pumping loss at partial load, organize a rapid combustion process, and improve combustion efficiency is extremely important. important. Therefore, when the engine is partly loaded, it is hoped that through a smaller valve lift, th...
Claims
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IPC IPC(8): F01L13/00
Inventor 杨鲁川武冠军
Owner 常州嵘驰发动机技术有限公司