Skip to main content

Oil derivatives are the dominant source of fuel for transportation systems. You have probably seen news coverage of “hydrogen” and “electric” powered vehicles, but these sources are still very much in their infancy. Gasoline is the primary fuel source for cars, trucks, and other passenger vehicles, but regular gasoline systems are not the only systems available. Diesel systems are the preferred types for commercial vehicles, cargo ships, and trains.

Gasoline vs. diesel fuel systems

In theory, gasoline and diesel fuel systems are remarkably similar. They are both internal combustion engines and they both convert chemical reactions into mechanical energy. Both systems use a series of pistons to compress fuel and air before igniting it. The difference between the two systems is how energy is created within them.

In a gasoline engine, gas and air are mixed then compressed and ignited with sparks from the spark plug. In a diesel engine, air is compressed and then the gasoline is introduced. When the air is compressed, it heats up and the compressed air ignites the gas.

The differences between gasoline and diesel fuel systems do not stop at the combustion methods. Both systems also use entirely different fuels. Diesel is heavier and oilier than gasoline, so it evaporates more slowly. Additionally, diesel emits fewer compounds that are associated with global warming, like CO2 and methane. However, diesel fuel does emit more nitrogen compounds, which is associated with acid rain and smog.

Since diesel engines mix in the fuel after the air is compressed, they are able to exercise more control over how much is utilized. In fact, these engines are considered one of the most fuel-efficient transportation systems. This is why vehicles with diesel systems dominate the commercial and freight industries.

The components of diesel fuel systems

A basic diesel fuel system is made up of five essential components. These are the tank, the fuel transfer pump, filters, the injection pump, and the injection nozzles.

The fuel tanks in diesel systems are typically crafted from aluminum alloys or sheet metal. The tanks are designed to contain the diesel fuel and survive its long-term corrosive effects.

The transfer pump sucks the diesel fuel out of the tank to move it into the injection pump. The transfer pump is generally located outside of the fuel tank or on the rear of the injection pump. In a few situations, transfer pumps are also located within the tank.

Diesel, like gasoline, is always mixed with contaminants that can damage the combustion system. The fact that diesel is refined, stored, transported on trucks, then stored again at gasoline stations ensures that contaminants will enter the fuel. To address these concerns, filters are placed between the transfer pump and injection system. The filter removes dirt and other contaminants that could easily damage the fuel injection system.

The injection pump compresses the fuel in preparation for injection. Injection nozzles spray diesel into the combustion chamber of the cylinders. The combustion chamber enables the car to convert the miniature combustions (explosions) into mechanical energy that turns the vehicle’s wheels.

At Kendrick Oil, we distribute a wide variety of wholesale fuels, including diesel and regular gasoline. If your business is in need of wholesale fuel or if you want to learn more about any of our products and services, give us a call at (800) 299-3991. You can also Contact Us by email for details. We have locations in Texas, New Mexico, Oklahoma, and Kansas.