| 摘要 |
The device for automatically adjusting air-pressure of double tires according to the road condition or running state, prevents one-sides wear of the tire and improves ride-stability and braking ability. The device comprises a main connecting hose (3) for passing compressed air of respective tubes (1a),(2a) through air injecting ports (1b),(2b) of inside/outside tires (1)(2); air-spring type valve (5) mounted in the inner hose (3); a controlling pilot hose (8) connected with a sequence valve (9) having a variable spring (9a), the main connecting hose (3); an air pilot line (7) between the hose (3) and the valve (5); a main air injecting port (6) at the lower valve (5).
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