About Diesel

Most of us see diesel engines in use every day. Diesel is responsible for fueling a significant percentage of vehicles on American highways today, especially those used for the transport of heavy loads, yet many Americans know little about diesel technology. For years, it's been considered the fuel of choice for large, workhorse type engines, while being overlooked for the average passenger car.

How do diesel engines work?

The major difference between a diesel engine and a gasoline engine is the type of ignition. Gasoline engines rely on a spark to ignite a fuel/air mixture which is present in the cylinder. The resulting combustion powers the engine.
A diesel engine, on the other hand, draws air into the cylinder first. The air is then subjected to extreme compression, which heats it to a very high temperature - much higher than that of a gasoline engine. Fuel is then introduced into the cylinder, where it combusts due to the extreme temperature. The force of the combustion forces the piston down, and the motion of the pistons turns the crankshaft, which powers the drive train of a vehicle.

Benefits of Diesel Engines

The compression of a conventional gasoline engine is limited because the engine must compress an air/fuel mixture. Since a diesel engine compresses only air, it can achieve a much higher compression ratio. A diesel engine compresses at the ratio of 14:1 up to 25:1, whereas in a gasoline engine the compression ratio is between 8:1 and 12:1. This makes diesel engines far more powerful than their gasoline counterparts. There are many reasons to consider a diesel vehicle for your next car or truck:

  • Diesel engines are both more powerful and more efficient than their gasoline counterparts
  • While diesel fuel costs slightly more than gasoline, diesel vehicles usually get much better gas mileage, saving you money at the pump.
  • While diesel vehicles usually cost slightly more those with conventional gasoline engines, diesel engines usually have a significantly longer life.
  • Many diesel engines can directly run Biodiesel, a vegetable oil or animal-fat based diesel fuel. Gasoline engines can not run anything but gasoline(with minor amounts of ethanol or methanol) without major modifications.

Diesel technology has long been used in America to power our larger, heavier engines. Thanks to recent improvements in the field and the rising costs of fuel, diesel engines alternatives are a better choice than ever when considering your next vehicle purchase.

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