Efficiency: Diesel fuel has a greater energy density than gasoline. Consequently, diesel engine efficiency tends to outpace gasoline cars. The U.S. Department of Energy found that diesel vehicles can get as much as 35% farther than their gasoline counterparts on a gallon of fuel. Longevity: Gasoline is a solvent, which means that as it burns
Learn the basics of diesel engines, how they differ from gasoline engines and how they work on the same basic principles. Find out the history, efficiency, advantages and disadvantages of diesels, and how they compare with biodiesels.
How a turbocharger works—a closer look. The basic idea is that the exhaust drives the turbine (the red fan), which is directly connected to (and powers) the compressor (the blue fan), which rams air into the engine. For simplicity, we're showing only one cylinder. Here then, in summary, is how the whole thing works:
Diesel Engines Use Superheated Air to Ignite the Fuel. In a gasoline engine, spark plugs use a quick jolt of electricity to ignite the fuel/air mixture in the cylinder. The sparks need to be timed precisely with the motion of the pistons in the engine. These elements all need to be coordinated in an ignition system.
Diesel engines are more fuel-efficient than their gasoline counterparts. This is due to the fact that a diesel combustion cycle is more efficient (~36%) than a gasoline combustion cycle (~25%). Better efficiency reduces fuel costs, which represent a major chunk of the running costs for a vehicle. However, better fuel metering, injection and
2. gasoline cars. Furthermore, Diesel engines are inherently more expensive to manufacture than gasoline engines. In the case of the two tested VW Golf versions, the December 2017 list price of the diesel vehicle was about 3,400 Euro higher than for the gasoline vehicle.
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how does a diesel engine work
