Posted on December 16, 2009
Hello again folks! This week I decided to work on the fuel pump manifold for the GR-7’s afterburner system. The new manifold will help regulate fuel flow to the mixing chamber nozzles as well as provide back flow protection and duel filtration for the fuel system. The manifold will consist of a pressure bypass valve, one way check valve, 10 micron sump filter, 90 micron nozzle filter and a fuel pressure gauge. On top of that somewhere I plan to fit a set of pneumatic pressure switches which will help control fuel flow later on.
To control the overall fuel pressure from the fuel pump I will use a pressure bypass valve. The hydraulic needle valve seen below will bleed off excess fuel pressure generated by the fuel pump back to the fuel pump’s intake or sump. The bypassing of the fuel pressure from the injector nozzles will essentially allow me to manually adjust fuel pressure at the nozzles.