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Gas pressure-bearing piston, gas charging method thereof and engine using gas pressure-bearing piston

An engine and piston technology, which is applied to engine components, machines/engines, pistons, etc., can solve problems affecting the life and performance of the engine crankshaft and crankshaft bearing bushes, and affect the improvement of engine life and performance, achieving a simple structure and improving stress. situation, the effect of reducing noise

Active Publication Date: 2010-07-21
张家港市乐余科创园投资发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the piston-and-rod mechanism of a traditional engine, because the piston has to bear great pressure, even if the piston has a cavity inside, the wall of the cavity must be made very thick, resulting in a large mass of the piston, and the corresponding connecting rod group itself The mass of the engine is also very large, and the inertial force generated by the piston and connecting rod group is very large, which has a great impact on the engine crankshaft and crankshaft bearing bushes, and at the same time produces a lot of noise, which affects the engine crankshaft and crankshaft bearing bushes to a large extent. The life and performance of the engine, which in turn affects the life and performance of the engine

Method used

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  • Gas pressure-bearing piston, gas charging method thereof and engine using gas pressure-bearing piston
  • Gas pressure-bearing piston, gas charging method thereof and engine using gas pressure-bearing piston
  • Gas pressure-bearing piston, gas charging method thereof and engine using gas pressure-bearing piston

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Experimental program
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Effect test

Embodiment 1

[0031] Such as figure 1 As shown, the conventional hollow piston in the prior art includes a head 1, a connecting portion 2 and a cavity 3 provided inside the head 1, the cross-sectional area of ​​the head 1 is S, and the cross-sectional area in the cavity 3 The area is s1, the gas in the cavity 3 is normal pressure or low pressure, and the highest pressure of the air pressure at the top of the piston is P2. When the air pressure at the top of the piston is normal pressure or low pressure, since the gas in the cavity 3 is also normal pressure or low pressure, the outer wall of the cavity 3 is not stressed in the longitudinal direction or is subject to very small tensile or compressive stress. can be ignored. When the air pressure at the top of the piston is the highest pressure P2, since the gas in the cavity 3 is normal pressure or low pressure, the pressure generated on the cross section of the head 1 can be ignored here, and the outer wall of the cavity 3 is The longitudi...

Embodiment 2

[0037] The method for filling the high-pressure gas for the gas pressure piston of the present invention comprises the following steps:

[0038] The first step is to punch a hole on the piston with a cavity on the processed head so that the cavity communicates with the outside world; cavities and external pores;

[0039] In the second step, the piston is put into the high-pressure gas container, so that the high-pressure gas fills the cavity;

[0040] The third step is to weld and seal the hole in the high-pressure gas container;

[0041] The fourth step is to take the piston out of the high-pressure gas container.

Embodiment 3

[0043] Such as image 3 As shown, an engine using a gas pressure-bearing piston includes a cylinder 5 and a gas pressure-bearing piston, and the gas pressure-bearing piston is partially or completely arranged in the cylinder 5, and the pressure P1 of the high-pressure gas in the high-pressure gas pressure chamber 4 is greater than Equal to or less than the maximum internal explosion pressure when the cylinder 5 is working. The connection part 2 of the gas pressure piston is connected with the crankshaft 7 via the connecting rod 6 . When the engine is working, in the exhaust and suction strokes, the pressure of the air pressure on the top of the gas-bearing piston in the cylinder reaches the minimum, which is normal pressure or low pressure; The pressure reaches the highest, because in the exhaust and suction strokes, the lowest pressure in the cylinder, that is, the air pressure on the top of the gas pressure piston, is normal pressure or low pressure.

[0044]When the air p...

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PUM

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Abstract

The invention discloses a gas pressure-bearing piston, a gas charging method thereof and an engine using the gas pressure-bearing piston. The gas pressure-bearing piston comprises a head part 1 and a connection part 2, wherein a high-pressure gas pressure-bearing chamber 4 is formed in the head part 1, and a high-pressure gas is sealed in the high-pressure gas pressure-bearing chamber 4. The gas pressure-bearing piston reduces the quality of the piston, further reduces the inertia force of the piston per se, improves the stress condition of a crank shaft, increases the service life of the crank shaft, improves the performance of the engine, enhances the running stability of the engine, and reduces noises generated by the engine while working.

Description

technical field [0001] The invention relates to a piston, especially a gas pressure bearing piston, a method for processing the piston and an engine using the piston. Background technique [0002] Pistons are widely used in engines, compressors and other equipment. In the piston-and-rod mechanism of a traditional engine, because the piston has to bear great pressure, even if the piston has a cavity inside, the wall of the cavity must be made very thick, resulting in a large mass of the piston, and the corresponding connecting rod group itself The mass of the engine is also very large, and the inertial force generated by the piston and connecting rod group is very large, which has a great impact on the engine crankshaft and crankshaft bearing bushes, and at the same time produces a lot of noise, which affects the engine crankshaft and crankshaft bearing bushes to a large extent. The life and performance of the engine, which in turn affects the life and performance of the eng...

Claims

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Application Information

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IPC IPC(8): F16J1/00F02F3/00F16C7/02
Inventor 靳北彪
Owner 张家港市乐余科创园投资发展有限公司