The Diesel engine can burn cleanly and run as quiet as many gasoline-powered engines.
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Today’s Diesel Engine still maintain the torque, power, and reliability diesel engines are known for.
Diesel engine, First, air is allowed into the cylinder and the piston compresses it. In a diesel engine, the air is compressed by anything from 14 to 25 times. Consequently, If you’ve ever pumped up a bicycle tire, you’ll have felt the pump getting hotter in your hands the longer you used it. That’s because compressing a gas generates heat. Imagine, then, how much heat is generated by forcing air into 14–25 times less space than it normally takes up. So much heat, as it happens, that the air gets really hot—usually at least 500°C (1000°F) and sometimes very much hotter.
Once the air is compressed, a mist of fuel is sprayed into the cylinder typically (in a modern engine) by an electronic fuel-injection system. So, The amount of fuel injected varies, depending on how much power the driver wants the engine to produce. The air is so hot that the fuel instantly ignites and explodes without any need for a spark plug. This controlled explosion makes the piston push back out of the cylinder, producing the power that drives the vehicle. When the piston goes back into the cylinder, the exhaust gases are pushed out through an exhaust valve.
Diesel and gasoline are quite different. You’ll know this much if you’ve ever heard the horror stories of people who’ve filled up their car or truck with the wrong sort of fuel! Essentially, diesel is a lower-grade, less-refined product of petroleum. Consequently, made from heavier hydrocarbons (molecules built from more carbon and hydrogen atoms).