The pressure behind the Coriolis mass flow sensor (7) is maintained at a constant value using a pressure regulator (9) which is adjusted based on measurements from output and input pressure sensors (10,11). The fluid flow is divided into two parts before r...

Pressure-discharge device for an injection system of an internal combustion engine is designed as a hydraulically controlled pressure relief valve (33). The pressure on the front side (25) of a low lift pump (21) serves as the control pressure. Preferred F...

The initial pressure control for a fuel pump, in the vehicle fuel tank (1), has a pressure control valve (8) which leads fuel from the fuel line back into the tank when the valve is open. The valve has two chambers, separated by a membrane with a fluid sea...

A pressure regulator for use in regulating the outlet pressure of a pump (21) for use in an engine comprises a piston member (24) which is moveable with respect to an outlet opening (36) under the influence of fluid pressure acting on the piston member (24...