DIESEL ENGINE ||advantages and disadvantages over petrol

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The Diesel engine  also known as a compression ignition  engine , named after Rudolf Diesel, is an internal combustion engine in which ignition of the fuel, which is injected into the combustion chamber, is caused by the elevated temperature of the air in the cylinder due to the mechanical compression. Petrol engine is an internal combustion engine with spark-ignition, designed to run on petrol (gasoline) and similar volatile fuels.
Advantages of Diesel engine over fuel engine
1. Diesel engine over better mileage
Diesel engine performs better and also also used minimum amount of fuel unlike the petrol engine
2.diesel  vehicles  don’t  need ignition tune-up
Diesel engine doesn’t uses spark plugs and so it doesn’t need ignition tune-up to start
3.High Torque performance
Torque is very important in getting a vehicle going, particularly when towing or carrying heavy loads. Diesels are known for their exceptional torque delivery even at low RPMs and as such, they can easily get moving from a standing start.
Disadvantages of Diesel engine over fuel
1. High Cost of fuel purchase
One of the main benefits of choosing diesel in the past was that it was cheaper than gasoline. But now, that isn’t the case as prices for both seem to be level and even higher in counties like Nigeria. Demand is always a factor in prices and diesel fuel is mostly used for commercial trucks, home and industrial generators and heating oil. This just means that as demand for diesel passenger vehicles grow, so will the price of diesel fuel because of competition from others who also use it.
2. Lack of high speed performance
Diesel engine has a high torque but it still doesn’t offer users high speed like the petrol engine. A benefit of choosing diesel is that it is more efficient compared to gasoline because it converts heat to energy. On the other hand, gas-powered cars send heat out the tailpipe. But those expecting high-speed performance from their car when shifting to diesel should be disappointed: your car will perform more like a workhorse. In other words, it will be slower but it will also be stronger and more enduring.
3. High maintenance cost
One of the advantages of a diesel car is that you no longer need ignition tune-ups because they don’t have spark plugs or distributors. However, the absence of these elements also means you have to do more when it comes to maintaining your vehicle. Maintenance for diesel-powered vehicles goes like this: you need to change the oil, air and fuel filters on a regular basis. The part of are expensive because the Diesel engine is not that common except for heavy duty vehicle. 
In conclusion:
Things are constantly being improved in the realm of diesel technology. There is increased pressure to build passenger vehicles, trucks, buses, as well as farm and construction equipment that not only produce low emissions but also low-sulfur diesel fuels. This is something a diesel-powered engine can provide.

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