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Brake pump piston ring of car air compressor

An air compressor and piston ring technology, applied in the field of piston rings, can solve the problems of large exhaust gas and unfavorable air compressor sealing, and achieve the effects of reducing down exhaust gas, preventing oil from running up, and improving the sealing effect.

Inactive Publication Date: 2014-05-14
NANJING FAYN PISTON RING
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The piston ring in the vehicle air compressor is a gas ring, and its main function is to ensure the sealing of the piston and the cylinder wall. Among them, the sealing effect of the first ring accounts for 80-90% of the overall sealing effect of the piston ring. The first ring in the machine is a positively twisted outer nose cone ring, which is not conducive to air sealing of the air compressor, and the exhaust gas under the air compressor is relatively large

Method used

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  • Brake pump piston ring of car air compressor
  • Brake pump piston ring of car air compressor
  • Brake pump piston ring of car air compressor

Examples

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Effect test

Embodiment

[0016] Example: A piston ring of a brake pump for a vehicle air compressor, comprising a first ring 1 and a second ring 2, and a first piston ring groove for inserting the first ring 1 is formed along the circumference from top to bottom of the piston 3 4 and the second piston ring groove 5 embedded in the second ring 2, the first ring 1 is an anti-twisted tapered ring, the second ring 2 is a positively twisted tapered ring, and the closed gap S between the two rings is 0.10mm, such as image 3 Shown; the taper angle of the first ring 1 is 2°±30′, such as Figure 4 Shown; the taper angle of the second ring 2 is 2°±30′, such as Figure 5 Shown; when the piston 3 is on the stroke, such as figure 1 As shown, the positive and negative twisted rings in the working state produce a small twist angle α under the action of twisting. Among them, the reverse twist angle α generated by the anti-twisted ring makes the outer side of the lower end surface of the anti-twisted ring contact...

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Abstract

The invention discloses a brake pump piston ring of a car air compressor. The brake pump piston ring comprises a first ring and a second ring. A first piston ring groove and a second piston ring groove are formed in the piston from top to bottom in the circumferential direction, wherein the first piston ring groove and the second piston ring groove are embedded into the first ring and the second ring respectively. The first ring and the second ring are piston ring sets in the opposite twist directions. According to the brake pump piston ring of the car air compressor, the sealing effect is improved through the opposite twist directions of the piston ring, downward exhaust air of the air compressor is reduced, air pressure inside a crank case in the air compressor is controlled, engine oil is prevented from pumping upwards, and the oil pumping fault rate of the air compressor is reduced by 45 percent.

Description

technical field [0001] The invention relates to a piston ring, in particular to a brake pump piston ring. Background technique [0002] The existing vehicle air compressor piston ring adopts a nose-shaped conical ring. The running surface of the conical ring is conical, and the conical surface gradually decreases upward. Down. The piston ring in the vehicle air compressor is a gas ring, and its main function is to ensure the sealing of the piston and the cylinder wall. Among them, the sealing effect of the first ring accounts for 80-90% of the overall sealing effect of the piston ring. The first ring in the machine is a positively twisted outer nose cone ring, which is not conducive to air sealing of the air compressor, and the exhaust gas under the air compressor is relatively large. Contents of the invention [0003] Purpose of the invention: The purpose of the present invention is to address the deficiencies of the prior art and provide a brake pump piston ring for a ...

Claims

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Application Information

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IPC IPC(8): F04B39/00
Inventor 胡怀纲刘志华吴立来黄代凤曹存军
Owner NANJING FAYN PISTON RING
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