Why You Should Choose Diesel Over Gas
There is a lot of talk these days about the advantages of diesel engines
in cars. This is especially true since the development of ultra low
sulfur diesel which is much better for the environment and has also put
an end to that terrible diesel smell that trucks and tractors used to
have. But what are the real differences between diesel and gas, and why
might you end up choosing diesel?
The major distinction between diesel and gas engines lies in the type of
ignition. While gas engines operate on spark ignition, diesel engines
employ compression ignition for igniting the fuel. With compression, the
air is drawn into the engine and subjected to high compression that heats
it up. The result is a very high temperature in the engine, much high
than that of gas engines.
In diesel engines, air and fuel are both infused into the engine at
different stages, as opposed to gas where a mixture of air and gas are
introduced. The fuel is injected into the diesel using an injector where
in a gas engine, a carburetor is used for this very purpose.
With gas engines, fuel and air are sent into the engine at the same time,
then compressed. The air and fuel mixture will limit fuel compression,
and thereby hence the overall efficiency. Diesel engines only compress
air, and the resulting ratio can be much higher.
Diesel engines are generally more efficient than gas. That's the main
reason why some people prefer them over gas engines. Here are a few more
1. Diesel engines have overcome the several disadvantages of earlier
models that featured higher noise and maintenance costs. Now, they are
quiet and require less regular maintenance when compared with gas engines
of a similar size.
2. Diesel engines are more rugged and reliable.
3. There is no sparking at all as the fuel ignites. The absence of
spark plubs or spark wires also helps to lower maintenance cost.
4. The fuel cost produced is 30 - 50 per cent lower than gas engine fuel
5. Gas burns hotter than diesel, and therefore they have a shorter life
span when they are compared with diesel engines.
So those are just some of the reasons why people choose diesel over gas.
It is worth thinking this over seriously next time you find yourself
faced with the need to buy a new car.