Patent
Flow testing apparatus for injectors
TLDR
In this article, a cylindrical piston free of engagement with the cylinder side wall is movable longitudinally into the cylinder so as to displace through the fluid outlet a volume of fluid corresponding to the volume of the piston accommodated in the chamber.Abstract:
Apparatus for generating a precision fluid flow comprises a cylinder (10) having side (14) and end (16, 17) walls forming a fluid-receiving chamber (18) having a fluid inlet and a fluid outlet. A cylindrical piston (60) free of engagement with the cylinder side wall is movable longitudinally into the cylinder so as to displace through the fluid outlet a volume of fluid corresponding to the volume of the piston accommodated in the chamber. The piston is formed of a material which is substantially insensitive to variations in temperature and pressure of the fluid in the chamber so that the piston rod is substantially dimensionally stable. The piston is moved relative to the chamber by a precision driving mechanism (70) either at a constant velocity to provide a constant volumetric flow of fluid through the outlet or at a variable velocity to provide a constant fluid pressure at the outlet.read more
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Patent
Method for setting and checking the flow in valves
TL;DR: In this article, an injection valve is placed in a measuring device and subject to the action of a fluid; the fluid is passed through the valve at a given volume flow, and the pressure set in the measuring device is determined and serves as a measure for the setting and checking of the injection valve.
Patent
Adjusting and checking flow through valves
TL;DR: In this article, a valve is mounted in a measurement device and subjected to a predefined vol. fluid flow whilst the resulting pressure in the measurement device is determined, and an adjustment device on the valve is adjusted until the measured pressure corresp. to a demand pressure.
Patent
Process for setting and checking flow in valves
TL;DR: In this paper, the authors present a method for setting and verification of the flow in valves, particularly in injection valves for internal combustion engines, using a measuring device and a fluid.
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Patent
Precision pressure control valve
TL;DR: In this paper, a diaphragm controlled pressure regulator has a control trim fluid pressure applied to the side of the diaphrasm opposite to side thereof in contact with the fluid, the pressure of which is to be regulated.