Piston structure capable of improving anti-seize capacity of pin hole
An anti-seize and piston technology, which is applied to pistons, engine components, machines/engines, etc., can solve problems such as the harsh working environment of the piston pin hole, the failure of engine oil to meet the requirements, etc., to increase the anti-seize ability and enhance lubrication , the effect of reducing impact noise
Inactive Publication Date: 2014-10-22
马勒投资(中国)有限公司
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Problems solved by technology
[0004] However, with the continuous improvement of engine parameters, the working environment of the piston pin hole is getting worse and worse, and the amount of oil entering the pin hole by splashing can no longer meet the requirements; The oil enters the pin hole, and the amount of lubricating oil entering the pin hole also cannot meet the requirements
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[0032] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific diagrams.
[0033] see figure 1 , figure 2 , a piston structure that improves the anti-seizing ability of pin holes, including a piston body, the piston body includes a piston head, at least two ring grooves are opened on the outer wall of the piston head, the ring grooves include an oil ring ring groove 5, and the piston The main body also includes a piston skirt, a pin seat is provided on the piston skirt, and a pin hole 1 is provided inside the pin seat; an inclined oil return hole 2 is opened inside the piston main body, and one end of the oil return hole 2 communicates with the pin hole 1. The other end of the oil return hole 2 communicates with the oil ring groove 5 . The present invention connects the oil ring groove 5 with the pin hole 1 through the o...
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The invention discloses a piston structure capable of improving anti-seize capacity of a pin hole and relates to a piston. The piston structure comprises a piston body and a piston skirt, the piston body comprises a piston head, the outer wall of the piston head is provided with at least two annular grooves, each annular groove comprises an annular oil ring groove, a pin seat is arranged on the piston skirt and provided with the pin hole inside. The piston body is provided with oblique oil return holes inside, one ends of the oil return holes are communicated with the pin hole, and the other ends of the oil return holes are communicated with the annular oil ring grooves. The annular oil ring grooves are communicated with the pin hole through the oil return hole, so that engine oil scraped by oil rings can directly enter the pin hole to lubricate, lubrication of the pin hole is greatly improved, and anti-seize capacity of the pin hole is improved. Meanwhile, the engine oil is forced to enter the pin hole, fitting clearance of the pin hole and the pin is reduced, and impact noise of the pin and a pin hole is reduced.
Description
technical field [0001] The invention relates to the field of engines, in particular to pistons. Background technique [0002] The automobile piston is like the central part of the automobile engine, which occupies an extremely important position when the engine is started. On the one hand, the automobile piston is used to bear the gas pressure, and the connecting rod is used to drive the crankshaft to rotate through the piston pin; on the other hand, the top of the piston is also an integral part of the combustion chamber. [0003] Usually, lubricating the pin hole adopts the method of optimizing the shape of the pin hole and drilling the oil return hole in the inner cavity of the piston to improve the pin hole wear and anti-seizing ability. [0004] However, with the continuous improvement of engine parameters, the working environment of the piston pin hole is getting worse and worse, and the amount of oil entering the pin hole by splashing can no longer meet the requireme...
Claims
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IPC IPC(8): F02F3/00
Inventor 曾少波马振飞
Owner 马勒投资(中国)有限公司