How does a distributor pump work?
For an in-direct fuel injection, a distributor pump generates 350 bar of pressure. Whereas, for a direct fuel injection system, it generates pressure in a range of 900 bar to 1900 bar. The piston compresses the fuel by moving in an axial direction relative to the drive shaft.
What is distributor pump?
The distributor-type fuel system is found on small- to medium-sized diesel engines. A rotating member, called a rotor, within the pump distributes fuel at high pressure to the individual injectors in engine firing-order sequence. There are several manufacturers of distributor-type fuel injection systems.
How big is a distributor fuel injection pump?
It houses a compact governor and all together the pump’s size is pretty much smaller than the inline fuel injection pumps. The pump and governor has been continuously improved over a period of time to meet the low fuel consumption and low emission demands. For an in-direct fuel injection, a distributor pump generates 350 bar of pressure.
How does the distributor pump in a car work?
It sucks the fuel from the tank and supplies it to the high pressure distributor pump. For each rotation, it supplies a constant amount of fuel to the high pressure pump. As the speed increases, the amount of fuel supplied also increases.
How does the plunger work on a fuel injection pump?
The stroke movement of plunger is 2.2 to 3.5 mm depending on the type of pump. The plunger moves to Top Dead Centre (TDC) and compresses the fuel. Two symmetrically arranged plunger return springs push the plunger back to Bottom Dead Centre (BDC) after fuel compression has taken place.
How does a fuel injection pump drive shaft work?
The drive shaft runs the impeller. Impeller is surrounded by an eccentric ring which is mounted in the pump housing. An impeller has 4 floating blades which float outwards against the eccentric ring. As the drive shaft rotates the impeller, the floating blades are pressed outside against the eccentric ring as a result of centrifugal force.
What are the parts of a fuel pump?
Motor driven & hand operated drum / barrel pumps for light oils up to heavy viscous fluids such as lube oils & gear oils. Manual & electric valves for fuel & petroleum handling including ball valves, gate valves, drum / faucet valves, fuel solenoid valves & pressure relief valves.
Who are the manufacturers of Walbro fuel pumps?
Our products deliver unquestioned fuel flow across a wide pressure range to support outrageous horsepower. For decades, Walbro automotive fuel pumps have been manufactured by TI Automotive.
How does the fuel distributor work on a WUR?
Many WURs have a vacuum diaphragm that provides enrichment during acceleration. Fuel distributor – Control center, contains a regulator to keep system pressure constant. The main moving part is a central pin which is controlled by the air sensor plate.
How does the control pin in the fuel distributor work?
The control pin in the fuel distributor moves according to how much air deflects the air sensor plate and is also affected by control pressure. Control pressure acts on the top of the control pin, cold control pressure is low (14 psi depending on model) which lessens the resistance of the air sensor plate to rise.