Piston and connecting rod assembly
A piston connecting rod and assembly technology, which is applied in the field of piston connecting rod assembly, can solve the problems of large contact area between the piston skirt and the cylinder liner wall, large gap between the skirt and the cylinder liner, and large friction loss power, so as to reduce the cylinder scuffing risk, improve combustion efficiency, and facilitate processing
Inactive Publication Date: 2020-01-10
湖南江滨机器(集团)有限责任公司
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Problems solved by technology
[0003] The bottom of the existing piston is equipped with a skirt to play a guiding role. The traditional structure makes the contact area between the piston skirt and the cylinder liner wall large, and the friction loss power is large. The gap between the skirt and the cylinder liner is large, and it is easy to knock the cylinder
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[0023] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.
[0024] The core of the present invention is to provide a piston connecting rod assembly which has a simple structure and can form reliable cooperation with the cylinder liner.
[0025] Please refer to Figure 1 to Figure 5 , figure 1 It is a three-dimensional schematic diagram of a specific embodiment of the piston connecting rod assembly provided by the present invention; figure 2 It is a schematic cross-sectional view of a specific embodimen...
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The invention discloses a piston and connecting rod assembly. The piston and connecting rod assembly comprises a piston and a connecting rod; the piston comprises a top, a head and a pin seat which isused for being connected with the connecting rod; the connecting rod is provided with a pin hole used for being connected with the piston and a skirt portion which is disposed on the outer side of the pin hole and used for being in matched connection with a cylinder sleeve; the outer side wall of the skirt portion is a curved surface; and the circle center of a spherical surface where the curvedsurface is located coincides with the axial center of the pin hole. The skirt portion is arranged on the connecting rod, and through the arrangement mode, the problem of difficulty of complicated all-steel piston forming can be solved; during movement of the connecting rod, the skirt portion on the connecting rod is in line contact with the cylinder sleeve all the time, the contact area of the skirt portion and the cylinder sleeve is remarkably reduced while the skirt portion plays a role of guiding, thus the power loss caused by friction is greatly reduced, and the burning efficiency is improved; and besides, the skirt portion on the connecting rod is in line contact with the cylinder sleeve, the smaller fit clearance can be designed, thus an oil film can be conveniently formed between the skirt portion and the cylinder sleeve, and the risk of cylinder scoring is lowered.
Description
technical field [0001] The present invention relates to the technical field of piston connecting rods, and more specifically, relates to a piston connecting rod assembly. Background technique [0002] The piston connecting rod assembly is an important part in the automobile engine. It connects the piston and the crankshaft. Its function is to convert the reciprocating motion of the piston into the rotational motion of the crankshaft, and transmit the gas pressure acting on the piston group to the crankshaft. [0003] The bottom of the existing piston is provided with a skirt to play a guiding role. The traditional structure makes the contact area between the piston skirt and the cylinder liner wall large, and the friction loss power is large. The gap between the skirt and the cylinder liner is large, and the cylinder is easy to knock. And it is not easy to form an oil film, which is prone to the risk of cylinder scuffing. In order to avoid the risk of piston skirt scuffing ...
Claims
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IPC IPC(8): F02F3/00F16C7/02
CPCF02F3/00F16C7/023
Inventor 余中荣代凌峰孟俊尧黄祖东廖君慧胡忆明谭清雅李海润吴杰
Owner 湖南江滨机器(集团)有限责任公司