| 摘要 |
A shock-absorbing device designed to be positioned in a fuel tank for cushioning pressure vibrations in a fuel pipe leading to a fuel injection system of a vehicle engine, has a shock- absorber housing (1, 2) divided by a diaphragm (4) into a first chamber (5) communicating with the fuel pipe (8), and a second chamber (6) which contains a spring (11) acting between the diaphragm (4) and the remote end wall (13) of the second chamber 6 and pressing the diaphragm (4) against a stop 10. The spring bias can be adjusted by shifting one support point of the spring, and to avoid an increased pressure developing in the chamber (6) when the spring bias is adjusted, an orifice (14) is provided in the wall of the chamber (6). The orifice may be closed by a plug after the spring bias is adjusted, or a ventilation tube may be connected thereto, the tube opening into the atmosphere outside the fuel tank. <IMAGE> |
