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Oil inlet and outlet hole of inner cooling oil channel of steel piston

A technology of entering and exiting oil holes and steel pistons, applied in the directions of pistons, engine components, machines/engines, etc., can solve the problems of low oil capture efficiency, fast oil outflow, and failure to lubricate the connecting rod bushing.

Pending Publication Date: 2020-10-20
GUANGXI YUCHAI MASCH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the present invention provides an oil inlet and outlet hole of the internal cooling oil channel of the steel piston, which aims to solve the problem that the oil flowing out of the internal cooling oil channel is too fast, and the connecting rod bushing cannot be lubricated, and the piston enters. The problem of low oil collection efficiency when oiling

Method used

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  • Oil inlet and outlet hole of inner cooling oil channel of steel piston
  • Oil inlet and outlet hole of inner cooling oil channel of steel piston
  • Oil inlet and outlet hole of inner cooling oil channel of steel piston

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Embodiment

[0017] Such as Figure 1-3 As shown, the present invention provides a steel piston internal cooling oil channel inlet and outlet oil hole, including a piston body 3, a left pin hole 7 and a right pin hole 5 are arranged on the piston body 3, and an inner pin hole 5 is provided in the piston body 3. The cooling oil passage 4 also includes an oil outlet hole 1 and an oil inlet hole 2 on the internal cooling oil passage 4, and the oil outlet hole 1 is arranged in the direction of the perpendicular line between the centers of the left pin hole 7 and the right pin hole 5, And the range of the included angle E formed by the axis of the oil outlet hole 1 and the vertical direction is 40-50°, the engine oil stays in the cooling oil passage in the piston for a long time and absorbs more heat. And when the included angle E is 45°, the effect is better. The oil inlet hole 2 is provided with a flat boss, which can thicken the wall of the inner cavity, and then the diameter of the oil inl...

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Abstract

The invention discloses an oil inlet and outlet hole of an inner cooling oil channel of a steel piston, and relates to the technical field of diesel engines and comprises a piston body, a left pin hole and a right pin hole are formed in the piston body, the oil inlet and outlet hole further comprises an oil outlet hole and an oil inlet hole, the oil outlet hole is formed in the perpendicular bisector direction of the center connecting line of the left pin hole and the right pin hole, and the included angle E formed by the axis of the oil outlet hole and the vertical direction ranges from 40 degrees to 50 degrees. The speed of engine oil flowing out of the inner cooling oil channel is reduced, and the engine oil can fully vibrate in the inner cooling oil channel to absorb heat; and the connecting rod bushing can be lubricated, and the engine oil trapping rate of steel piston oil inlet is increased.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an oil passage inlet and outlet hole in a steel piston internal cooling oil passage. Background technique [0002] With the improvement of social and economic activities on vehicle power, economy and adaptability, stricter emission regulations and sustainable development requirements for energy conservation and environmental protection, the engine is developing in the direction of high load, high power and high strengthening, and the heat borne by the piston The loads become more severe, placing greater demands on piston cooling. [0003] At present, the oil inlet and outlet holes of the internal cooling oil passage of the steel piston are located on both sides of the pin seat, and the centerline of the oil hole is parallel to the centerline of the piston, that is, vertically downward. In this way, the oil outlet speed of the internal cooling oil passage is faster. Fast, and the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02F3/22F02F3/00
CPCF02F3/0084F02F3/22
Inventor 韦良锦张锦
Owner GUANGXI YUCHAI MASCH CO LTD
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