From Jason Livingston, blogger and earth-friendly operator of sites that are dedicated to Improving Gas Mileage with Ecomates Ethos FR+ Gas Saver.
Diesel engines are much more efficient and preferable as compared to gas engines due to the following reasons:
1. Diesel engines have overcome the severaldisadvantages 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 percent lower than gas engine fuel prices.
5. Gas burns hotter than diesel, and therefore they have a shorter life span when they are compared with diesel engines.
Diesel engines offer the lowest specific fuel usage of any other big internal combustion motor. The fact remains, two-stroke diesels with high pressure forced induction, particularly turbo charging, make up a great proportion of the largest diesel engines. All over North America, diesel engines are normally used in larger trucks, where the low stress, high efficiency cycle will lead to a much greater engine life and lower costs to run. These advantages also aid to make the diesel engine perfect for use in the heavy haul industry.
Cars however, continue to use gasoline, largely due to the consumer craving for a wider range of RPM. In Europe, the use of diesel engines with sedans is far more widespread.
Even though diesel engines are more efficient when throttled down, they are not suitable for most types of airplane. The higher compression ratios of the
diesel cycle demand a much stronger block, head, and almost all moving parts in general. These stronger parts add a lot of weight, or a lot of expense, especially if lighter alloys are being used.
The Otto cycle engines are much less expensive to build for these reasons, although they have long been overtaken by the turbine engines. For the same displacement of the engine, Otto cycles will make more actual power than a Diesel cycle can, as the fuel will burn at a much faster rate, allowing more powerstrokes per minute than a standard diesel can offer.
What this means, is that less fuel has to be carried. Additionally, commercial aircraft is normally run at preset limits, so that Otto cycle engines used in aircraft don’t suffer anywhere near the efficiency penalties that land vehicles do. Heavy equipment, such as those used in mining and building, almost always uses diesel engines.
Diesel engines are also used with submarines. In these types of submarines, the diesel engine is run when the submarine is on the surface, which charges the batteries that power the submarine once it is under water.
All across the world, diesel engines serve many different purposes. They are used with almost all types of heavy machinery, and other vehicles. Gasoline isn’t the way to go with heavy machinery, as the engines simply can’t endure the beating.
Diesel has been well-liked for many years with machinery and submarines, basically because the engines can last for years and years. Even though they won’t offer as much speed as gasoline, the torque and power is much better.