How many cylinders does an inline fuel injection pump have?
Governor to vary the fuel quantity at varying speeds (usually a RSV governor) In-line pumps can have a set of 2 to 12 cylinders. It is used in various commercial vehicles, agricultural and construction machineries. The maximum injection pressures can vary between 400 bar to 1350 bar based on the pump design.
What’s the best way to build a fuel injection manifold?
Use a ½-inch drill and drill straight through. When you have pierced the tubing, lean the drill slowly at a 45 degree angle. This will help to oval the hole of the runners. Place the injector bosses over the oval holes. Ensure that there is adequate space around the flange and boss joint so that they can be welded easily.
How do you attach injectors to a fuel rail?
Place the injector bosses over the oval holes. Ensure that there is adequate space around the flange and boss joint so that they can be welded easily. Place the injectors into the fuel rail and slip the bosses over the injectors. Align the assembly together carefully with the injectors exactly in the middle of the holes in the runners.
Why are fuel injection pumps used in diesel engines?
Since its introduction, it has kept countless number of diesel engines in function. In-line pumps are still widely used in large number of diesel engines, mainly because of its durability and ease of maintenance. Requirements: A fuel injection pump is used to supply fuel to the engine at a certain pressure.
When was the in line fuel injection system invented?
The in-line pump injection system (Figure 1) is one of the oldest and most proven systems for diesel engines. It was developed in the 1920s, when “solid” fuel injection replaced air-assisted fuel injection in large diesel engines. Traditionally, the in-line pump—the heart of the system—is also referred to as the “jerk pump” Figure 1.
How does the in line fuel injection pump work?
The in-line fuel-injection pump runs at half the speed of the engine and always synchronously to the piston movements of the diesel engine. The fuel reaches the nozzle-holder assemblies with the injection nozzles via high-pressure lines. The in-line fuel-injection pump is the “classic” among injection systems.
How is the P-L-N fuel injection system controlled?
In its “classic” version, the system is controlled mechanically through specialized components such as the governor. In newer versions, a number of parameters are controlled electronically. The P-L-N system is being displaced by other fuel injection system types in new engine designs.
What’s the name of the fuel injection system?
The P-L-N system is being displaced by other fuel injection system types in new engine designs. The pump-line-nozzle (P-L-N) system, also called the pump-pipe-nozzle system, was for many decades the dominant type of diesel injection system in practically all diesel engine applications.