Abstract: A fuel pumping apparatus for supplying fuel to a compression ignition engine includes a positively reciprocated plunger which during a pumping stroke displaces fuel from a first pump chamber to an outlet and draws fuel into a second pump chamber. The apparatus includes an inlet chamber from which fuel is supplied to the second pump chamber, and a diaphragm pump which draws fuel into the inlet chamber through a fuel inlet. The pump drive shaft extends through the inlet chamber and carries vortex creating means whereby air entering the inlet chamber will collect around the shaft to cause early starvation of fuel supply to the associated engine in the event substantial quantities of air enter through said inlet.

Abstract: An electronic control system for controlling the output of the fuel pump of a turbo supercharged compression ignition engine has a memory circuit which receives an engine speed signal and a fuel quantity signal and provides a derived air inlet manifold pressure signal for use in the remainder of the control system. The memory circuit stores test data relating to the variation of inlet manifold pressure as a result of varying the engine speed and fuel quantity. This overcomes the need to provide a manifold pressure transducer in an engine installation. A delay circuit is provided to compensate for turbo supercharger lag.

Abstract: A fuel injection pumping apparatus for supplying fuel to an internal combustion engine includes a rotary distributor member which is also axially movable to determine the amount of fuel supplied by the apparatus. Fluid under pressure is supplied to the chamber to move the distributor member axially against the action of a spring and valve means is provided to control the pressure. The valve means includes a first member in the form of a spool and a second member in the form of a sleeve. The sleeve is coupled by linkage to the distributor member and the position of the spool is determined by a speed responsive governor. A land on the spool co-operates with a port to control the flow of fluid to the chamber. A groove on the spool and a port register to allow fuel flow to a pumping chamber but move out of register to halt fuel flow if the spool should move with increasing speed without there being a corresponding movement of the distributor member and sleeve to reduce the fuel delivered by the apparatus.

Abstract: A fuel injection pumping apparatus includes a rotary distributor member having a transverse bore containing a pumping plunger, a single passage is formed in the distributor member and extends from the bore to the periphery of the distributor member, inlet passages and outlets are formed in the body part and break out into the periphery of the distributor member in a common radial plane. The inlet passages and outlets are alternately positioned around the axis of rotation.