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.
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[0016] Examples: A piston ring for a brake pump of a vehicle air compressor, comprising a first ring 1 and a second ring 2, and a first piston ring groove embedded in the first ring 1 is formed from top to bottom of the piston 3 along the circumferential direction 4 and the second piston ring groove 5 embedded in the second ring 2, the first ring 1 is an anti-twisted conical surface ring, the second ring 2 is a positively twisted conical surface ring, the closed gap S of the two rings is 0.10mm, such as image 3 As shown; the cone angle of the first ring 1 is 2°±30′, such as Figure 4 As shown; the cone angle of the second ring 2 is 2°±30′, such as Figure 5 As shown; when the piston 3 strokes, as figure 1 As shown, the positive and negative twisted ring in the working state produces a small twist angle α under the twisting action, and the anti-twist angle α generated by the anti-twisted ring makes the outer side of the lower end surface of the anti-twisted ring contact with th...
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