Delivery valve for a fuel injection pump

Abstract

Abstract The delivery valve (2) is installed between an injection pump (3) and an injection valve and has a disc-like valve body (5) which is pressed against a valve seat (4) by a closing spring (6) and which forms a throttle cross-section (16) with a channel (10). The dimensions of the valve body (5), the throttle cross-section (16) and the closing force of the closing spring (6) are matched to one another in such a manner that after an injection process has finished, the valve body (5) moves with delay in the direction of the valve seat (4). This prevents a hard reflection of the pressure wave which would lead to the injection valve opening again. <IMAGE>

Inventors

• 👤 Helmut Laufer
• 👤 Karl Zibold

Bibliographic Details