The primary distinction between Petrol and Diesel machines is that the Petrol engine works on the Otto cycle whereas the Diesel engine operates on the Diesel cycle. Other discrepancies can be attributed to the design, styles, and uses of these engines. The main parameter they are ranked on is the kind of fuel they use. Typically, Engines run on the principles of heat transfer.

A- Petrol Engine

• Petrol machines are internal explosion engines which have spark ignition. They run on rather combustible fuels such as petrol.
• In these machines, air and fuel are typically mixed post-compression.
• Petrol engines operate on the Otto cycle, which consists of two isochoric procedures and two isentropic operations.
• In petrol engines, air and petrol are usually combined in a carburettor before being presented to the cylinder.
• Once the air and petrol are squeezed, the fuel is kindled via an electric spark.

B-Diesel Engine

• The Diesel engine is likewise an internal combustion engine which is also understood as the compression-ignition engine. It is called Rudolf Diesel.
• In these machines, the fuel is infiltrated into a combustion chamber and is then torched by the high temperature of the air in the enclosure.
• The high temperature of the air in the cylinder is due to the adiabatic contraction. These engines only squeeze the air and not the fuel.
• When infiltrated into the combustion section, the Diesel fuel undergoes spontaneous ignition.
• These engines operate on the Diesel cycle, which consists of a constant force process, a constant volume approach, and two isentropic operations.

That is why we can not put the wrong fuel in the car their working methods are different

Frequently Asked Questions related to engines

List circumstances under which discharge can take place.

The requirements required for discharge to take place are:

1. Fuel: The existence of a fuel
2. Air: Oxygen is a must for combustion to happen
3. Ignition temperature: The lowest temperature at which a substance catches fire.

Explain how the use of CNG in cars has reduced pollution in our municipalities.

Combustion of fuels like petroleum forces the addition of numerous toxic pollutants like un-burnt carbon, particulate matter, and many stink gases enter the air and induce respiratory diseases.

Compressed Natural Gas (aka CNG) has these toxic products in very little quantities. It is a comparatively more pristine fuel. Thus, the use of CNG has decreased pollution in our cities.

Give reasons: LPG is a more suitable domestic fuel than wood.

LPG is a more suitable domestic fuel than timber as

• It does not have smoke and unburnt carbon particles, which induce respiratory problems.
• It includes a low ignition temperature.
• It is straightforward to store.

Explain how CO2 can control fires.

CO2 is a non-combustible gas and it is even a non-supporter of combustion. It destroys fire in two ways:

Since it is more serious than oxygen, it protects the fire like a cloak around the flaming material and cuts off the connection between oxygen and fuel.

In cylinders, CO2​ is held in liquid form. When removed, it expands greatly and cools down. This gets down the temperature of the fuel, which aids in controlling the fire.