Pulsation Reducer by Combination Spring

The present invention destroys the MAC frost occurred on by this possible piston linearly reciprocates in the fuel rail of the gasoline direct injection engine, repeating the transformation and desorbing My Mac freezing fuel into the compression energy by the composite spring, Fran that the fuel supply pump by a spring in which the fuel pressure is arranged to reciprocate inside the relates to a funny pulsation damper it can be maintained at a constant pressure receiving a broadband pressure range using a composite spring with no energy loss, the spring body (31) (31a) Low pressure installed in a line, but appear with the guide shaft 12, which first operating drive the coil spring (51), (51a) and a second working drive the high-pressure disc spring (41), (41a) and a low pressure coil that is installed in the line spring 51 (51a) and the high-pressure disc spring (41) (41a) is disposed between the low-pressure coil spring 51, the low pressure spring cover 52 to protect the elasticity of (51a) (52a) and the low-pressure spring Is installed in the cover (52) (52a) in contact with the low-pressure spring stopper plate 34. The pulsation attenuator is provided with a composite low-pressure spring for the stop comprises a spring pad (53) as possible.