Liquid fuel pumping apparatus

Claim 1

A LIQUID FUEL PUMPING APPARATUS FOR SUPPLYING FUEL TO AN INTERNAL COMBUSTION ENGINE AND COMPRISING A BODY PART, AN INJECTION PUMP MOUNTED WITHIN THE BODY PART SAID PUMP BEING ADAPTED TO BE BRIVEN IN TIMED RELATIONSHIP WITH AN ENGINE TO WHICH THE APPARATUS SUPPLIES FUEL, A FLUID PRESSURE OPERABLE MEMBER THE SETTING OF WHICH DETERMINES THE TIMING OF DELIVERY OF FULE BY THE INJECTION PUMP, A FEED PUMP FOR SUPPLYING FUEL UNDER PRESSURE, VALVE MEANS FOR CONTROLLING THE OUTPUT PRESSURE OF THE FEED PUMP IN A MANNER SO THAT IT VARIES IN ACCORDANCE WITH THE SPEED AT WHICH THE APPARATUS IS DRIVEN, CONDUIT MEANS THROUGH WHICH FUEL FLOWS FROM THE FEED PUMP TO THE INJECTION PUMP, AN AXIALLY ADJUSTABLE THROTTLE MEMBER FOR CONTROLLING THE FLOW OF FUEL THROUGH SAID CONDUIT MEANS, RESILIENT MEANS BIASING THE THROTTLE MEMBER IN A DIRECTION TO INCREASE THE FLOW OF FUEL THROUGH THE CONDUIT MEANS, SAID THROTTLE MEMBER BEING SUBJECTED TO A VARIABLE SPEED DEPENDENT PRESSURE SO THAT ITS AXIAL SETTING WILL DEPEND UPON THE SPEED AT WHICH THE APPARATUS IS DRIVEN, A FLOW PATH COMMUNICATING WITH THE OUTLET OF THE FEED PUMP, THE FLOW OF FUEL THROUGH SAID FLOW PATH BEING CONTROLLED BY SAID THROTTLE MEMBER, A RESTRICTION IN SAID FLOW PATH DOWNSTREAM OF SAID THROTTLE MEMBER AND PASSAGE MEANS FOR APPLYING THE PRESSURE AT A POINT IN SAID FLOW PATH INTERMEDIATE THE THROTTLE MEMBER AND SAID RESTRICTION TO SAID FLUID PRESSURE OPERABLE MEMBER, WHEREBY VARIATION IN THE SETTING OF THE THROTTLE MEMBER WILL PRODUCE VARIATIONS IN THE PRESSURE AT SAID POINT THEREBY TO VARY THE SETTING OF SAID FLUID PRESSURE OPERABLE MEMBER.