Engine assembly method and engine
An assembly method and engine technology, which is applied in the direction of machines/engines, mechanical equipment, etc., can solve the problems of difficult assembly of the lower connecting rod and affect the assembly efficiency of the engine, and achieve the effect of easy assembly and improved assembly efficiency
Active Publication Date: 2021-04-20
GREAT WALL MOTOR CO LTD
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Problems solved by technology
[0003] At present, the typical structure for changing the top dead center position of the engine piston is a multi-link mechanism. When the lower connecting rod is assembled with the crankshaft, two connecting rod bolts are used to fasten the upper and lower parts of the lower connecting rod. During the process, the position of the lower connecting rod needs to be constantly adjusted to facilitate the tightening of the connecting rod bolts. The assembly of the lower connecting rod is difficult, which affects the assembly efficiency of the engine.
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[0063] It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.
[0064] The following will refer to Figure 1-Figure 28 The present invention will be described in detail in combination with examples.
[0065] refer to Figure 1-Figure 3 As shown, the engine may include: a piston 1 , an upper connecting rod 2 , a lower connecting rod 3 , a crankshaft 4 and a compression ratio adjusting mechanism 7 .
[0066] Specifically, the lower connecting rod 3 of the embodiment of the present invention is adapted to be hingedly connected with the crankshaft 4 of the engine, and the piston 1 can move in the cylinder of the engine, combined with Figure 1-Figure 2 As shown, the piston 1 can move along the cylinder bore of the cylinder Figure 1-Figure 2 up and down movement.
[0067] The main journal 41 of the crankshaft 4 is rotatably arranged on the cylinder block of the engine, a...
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The invention discloses an engine assembly method and the engine. The assembly method of the engine The engine comprises: a piston, an upper connecting rod, a crankshaft, a lower connecting rod, and a compression ratio adjusting mechanism. The lower connecting rod includes: an upper connecting rod part and a control connecting rod part. The upper connecting rod part and the control connecting rod part are sleeved on the connecting rod neck of the crankshaft. One of the rod part and the control link part is provided with a reaming seat, and the other is provided with a connecting arm, and the reaming seat and the connecting arm are rotatably connected. The assembly method includes the following steps: S4: Rotate the upper link part and the control link part around the rotation connection point, so that the opening angle of the upper link part and the control link part changes, so that the upper link part and the control link part mounted on the connecting rod neck. According to the engine assembling method of the present invention, by assembling the upper connecting rod part and the control connecting rod part on the crankshaft in a rotational manner, the lower connecting rod and the crankshaft can be assembled easily, which is beneficial to improving the assembly efficiency of the engine.
Description
technical field [0001] The invention relates to the field of automobiles, in particular to an engine assembly method and the engine. Background technique [0002] Variable compression ratio technology is a technology that dynamically adjusts the engine compression ratio. By changing the top dead center position of the engine piston, the engine compression ratio is changed. The variable compression ratio can improve fuel efficiency under different load conditions and make the engine work all the time. In the best fuel economy zone. [0003] At present, the typical structure for changing the top dead center position of the engine piston is a multi-link mechanism. When the lower connecting rod is assembled with the crankshaft, two connecting rod bolts are used to fasten the upper and lower parts of the lower connecting rod. During the process, the position of the lower connecting rod needs to be constantly adjusted in order to tighten the connecting rod bolts. The assembly of ...
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IPC IPC(8): F02B75/04F02B75/32
CPCF02B75/04F02B75/32
Inventor 刘涛刘俊杰林文渠娜钟德华张树旻杨乐尹吉刘君宇姜志永栗文帅苏旭朝董高峰王文远
Owner GREAT WALL MOTOR CO LTD