Diesel Fuel Injector

If you have always owned and worked on gasoline vehicles and you believe that there may be an issue with your diesel fuel injection you should take note that a diesel fuel injection system is different than a gasoline engine. This is a big difference, in fact many people are surprised by this difference and they don't realize until they begin working on the vehicle that it is not an issue they know how to solve on their own.

The difference between the gasoline engine and the diesel engine is quite remarkable. When you look at your normal gasoline engine you will find that the injection process involved a port injection or carburetor. The way that this works is that the port injection system will inject the fuel outside of the intake stroke, or outside of the cylinder, and in a car that has a carburetor the carburetor mixes air and fuel before it enters the cylinder. The result is that the fuel is loaded into the cylinder during the intake stroke and then it is compressed. This compression of the fuel and air works to limit the compression ratio of the engine, so if it compresses the air too much the mixture will actually ignore and cause knocking. Of course, knocking then leads to engine damage due to excessive heat.

Now that we know what a gasoline engine does we can look at the differences. In diesel fuel injection the diesel fuel is simply injected right into the cylinder, not outside of it. As you can see, this is a big difference and one that has been experimented with quite a bit. The result of all of this experimentation is that your diesel fuel injection system could be located in a variety of different locations under the hood.

When it comes to diesel fuel injection the actual injector has to be able to tolerate the heat and pressure inside of the cylinder itself and still deliver the fuel. The fuel is injected into the cylinder in a fine mist. The problem in this system is that the fine mist has to be circulated into the cylinder so that it is evenly distributed. In some vehicles this involved special valves, pre-combustion chambers, and other parts and are meant to circulate the air inside of the combustion chamber. The reason that the air needs to be circulated is to improve the ignition as well as the combustion process.

The fuel injection process is controlled by what is known as the ECM communicating function which has a lot of different sensors that are able to measure the functions of the vehicle. The sensors measure things such as the RPM, engine coolant, oil temperatures, air temperature, and more. The reason for this is that the ECM can then change up the timing of the engine in cooler weather so that the diesel fuel injection system actually sprays the fuel at a different time than it would in hot or even moderate temperatures. Smaller diesel engines do not have such computer control capabilities, but larger engines and the fuel injection process is generally controlled by a computer.

Many have argued that the diesel fuel injection system is much more reliable than the gasoline injection system, but this is something that can be debated. Both the gasoline vehicle fuel injection system and the diesel fuel injection system have their pros and cons. Both of the fuel injection systems are changing all the time as technology improves and new ideas are thought up to improve the efficiency and accuracy of any and all fuel injection.

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