Diesel engine and piston
A technology for pistons and piston rings, applied to pistons, mechanical equipment, engine components, etc., can solve problems such as difficult mass production and complex oil chamber technology
Active Publication Date: 2018-02-09
湖南江滨机器(集团)有限责任公司
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- Abstract
- Description
- Claims
- Application Information
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Problems solved by technology
This kind of piston forging is simple, but the process of processing the oil chamber is complicated, and it is not easy to mass produce
Method used
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Embodiment Construction
[0022] The present application provides a piston, which realizes providing a piston with a simple process for processing an internal cooling oil channel, a solid overall structure, and high forming precision. The present application also provides a diesel engine comprising the above-mentioned piston.
[0023] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, not all of them. Based on the embodiments of the present application, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present application.
[0024] figure 1 It is a schematic structural diagram of the piston provided in this application.
[0025] The piston provided by this ap...
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The piston provided by this application includes a piston ring part and a piston body. The piston body includes a piston ring connection end at the upper end and a combustion chamber end at the lower end. The walls above and below the groove are all interference fit, the bottom surface of the piston ring is coplanar with the annular bottom platform, and the bottom surface of the piston ring is also provided with an annular protruding block. The bottom surface of the piston ring is connected with the annular bottom platform by molten metal. The piston ring part and the connecting end of the piston ring have an interference fit, and are tightly against the wall above and below the inner cooling oil passage groove, completely sealing the inner cooling oil passage groove in the middle of the outer wall of the piston ring connecting end, and the inner cooling oil passage groove Together with the inner wall of the piston ring part, it forms an internal cooling oil passage. After the piston ring and the piston body are assembled, they are turned upside down, and then molten metal is injected into the bottom surface of the piston ring and the ring-shaped bottom platform, and the molten metal is blocked by the ring-shaped protruding block. The present application also provides a diesel engine comprising the above-mentioned piston.
Description
technical field [0001] The present application relates to the technical field of internal combustion engine equipment, and more specifically, relates to a piston. The present application also relates to a diesel engine comprising a piston as described above. Background technique [0002] The degree of strengthening of diesel engines continues to increase, and the burst pressure exceeds 25MPa. The traditional aluminum alloy piston can only withstand the burst pressure of 18MPa. Therefore, the replacement of hinged pistons and forged steel pistons has become a solution to high-load pistons. [0003] The hinged piston is machined separately from the head and the skirt, and then connected with the piston pin to form a split piston. Wherein the piston head is made of cast iron or forged steel, and the piston skirt is made of aluminum alloy. This type of piston has poor running stability and heavy overall weight of the piston. [0004] When the forged steel piston blank is forme...
Claims
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IPC IPC(8): F02F3/22F02F3/26F02F3/00
Inventor 刘明晖姚学伟杨志勇王奕澍巢涛
Owner 湖南江滨机器(集团)有限责任公司