Your diesel injector pump gives your engine an edge over gasoline-fueled engines by directly injecting fuel into the combustion chamber where it is ignited by hot, high-pressured air. Your fuel takes a more direct route and this gives your vehicle better gas mileage and stronger towing power. Since it is responsible for providing your engine with fuel, your diesel injector pump is an essential component that you simply can't do without. If you are looking to replace a faulty diesel injector pump or replace your current pump with one of higher quality, here are some general things you should know.
Types of diesel injector pumps
- In-line fuel pump - One of the earlier models of diesel pumps, this type allows the pistons to have continuous stroke and injection throttle by employing an in-line layout with a series of cam-operated injection cylinders. The volume of fuel in each injection is controlled through the cylinders, which have a cut-off port that is aligned with a slot in the cylinder. The rate of injection is varied by the rotation of the cylinders depending on how much engine power is needed. In-line fuel pumps are commonly found in large vehicles like trucks and tractors.
- Rotary fuel pump - In this type, one injection cylinder, is driven by an axial cam plate to inject fuel into individual fuel lines. A distributor valve is used to guide the injection cylinder. The rate of injection here is varied by differing crank speeds. This process creates more power at high crank speeds and smoother, more economical running at lower crank speeds. Rotary pumps are usually found in cars and small trucks.
- Electric fuel pump - In this type, the car engine's computer (also known as the engine contrul unit or ECU) and a set of sensors control a valve which supplies the pressurized fuel to your car's engine. With the valve opening and closing several times in a second, the fuel is released as a mist, which allows the fuel to burn at a steadier rate.
Other things to consider in buying a diesel injector pump:
- Other than the price of the injector pump itself, be sure to consider installation and periodic maintenance costs as well in your budget. Installation kits range from $20 to around $70 or more while getting professional help for installation can costs hundreds of dollars.
- You can also look into how a particular injection pump will affect the quality of your emissions and your fuel economy.
- Some popular brands include Bully Dog, Powerstroke, Cummins, and Duramax.
- Refer to your vehicle's owner manual for detailed information regarding what kinds of diesel injection pumps are best for your vehicle.