It is said that vehicles with petrol engines are the most powerful. But when it comes to heavy carrying vehicles, diesel engines are installed in them, have you ever wondered why this is done? Why are diesel engines used in buses, trucks, trains and even huge ships? The engine of a sea ship is approximately 1 lakh horse power. The same question was asked on the online platform Quora. You will be surprised to know the truth.
According to experts, there are two main reasons for this. Be it diesel or petrol, both are made from crude oil. Light oil is petrol while diesel is considered heavy oil. But diesel engine is 50% more efficient than petrol engine. If a 40 horse power petrol engine runs for 40 minutes in 8 liters of oil, then a diesel engine will run for 60 minutes in the same amount of oil. This leads to tremendous saving of oil i.e. foreign currency.
be more powerful
The second reason is to be more powerful. Diesel engine can pressurize air up to 25-30 times, but the capacity of petrol engine is only 10-12 times. The reason lies in its structure. Diesel engines are made in such a way that only air can be compressed. Whereas in petrol engine the mixture of petrol and air is compressed. If you give it more pressure than a limit, it will start burning uncontrollably. This process is called knocking. Many times you must have heard the sound of knocking in the bike. This happens because of this. To reduce this, a separate compound is added. This is the reason why a diesel engine can produce up to 1 lakh horse power, whereas a petrol engine does not exceed 2000 horse power.
Diesel is more difficult to burn
It can also be understood that diesel is much more difficult to burn than petrol. In such a situation, to provide more hot air in the cylinder, a lot of pressure has to be given, which is possible only in diesel engines. Because their pressure is up to 10 times higher than that of petrol. Due to this, the compressor does not break and it becomes easier to carry heavy loads. Small vehicles like scooters and motorcycles require less pressure, hence petrol is used in them. Diesel engine has low RPM, whereas petrol engine has high RPM. This is the reason why petrol engine gets damaged quickly. You will be surprised to know that a diesel engine of a railway runs for 36 years.
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FIRST PUBLISHED: December 17, 2023, 18:14
