whats the diffrence between a Petrol and a Diesel engine working?

Answer 1

In a diesel engine, there is no spark plug. Instead, diesel fuel is injected into the cylinder, and the heat and pressure of the compression stroke cause the fuel to ignite. Diesel fuel has a higher energy density than gasoline, so a diesel engine gets better mileage.

Answer 2

Yes, a few of the answers are very correct thus far.

In a diesel engine, air is drawn into the cylinder and then compressed, the temperature and pressure of the air when compressed is enough to ignite the diesel fuel when the injector injects it's spray into the cylinder. By using this process, diesel burns more fully and efficiently, thus the reason diesels are more fuel efficient than regular gasoline engines.

This explanation is based on the assumption you have a good comprehension of how a standard gasoline engine works and are curious about the difference in a diesel engine.

A diesel engine has glow plugs which are set in the cylinder head. These are only used during start up of the engine. Basically, when you go to start it, the glow plugs will cycle. As they do, they heat the cylinder head, making the cylinder hotter to make ignition easier on cold starts. Many glow plug systems are set to keep cycling for a few seconds every so often until the vehicle has reached a temperature determined to be hot enough to self sustain the heat required for combustion.

Incorrect info given thus far in other answers:

1) Diesel engine air to fuel ratio is NOT 500 / 1
2) Diesel engine do NOT have a fuel / air mixture that is compress and THEN ignites, it compresses air and THEN injects the fuel.
3) Diesel engines are NOT 2 stroke engines.
4) In a Gasoline engine, combustion does NOT take place in the carburetor.

Answer 3

It's simple Petrol engine- give it petrol, it goes. Problems are generally minor but do occur More torque and acceleration but higher fuel consumption Diesel- More complicated set up but if there is a prob it is a prob. Diesel engines need the right amount of fuel + air at the right quantities. Less torque but more economical and cleaner. For big mileage go diesel For small go petrol (more fun to drive)

Answer 4

Mechanically, they're very similar. The main differences are (a) the fuel-to-air ratio, and (b) the method of ignition. The fuel ratio for a petrol engine is about 15 parts air to 1 part petrol, but the ratio for a diesel engine is about 500 parts air to 1 part diesel fuel. For ignition, a petrol engine uses compression of the fuel/air mixture and a spark plug to ignite the fuel/air mixture. In a diesel engine, you don't need a spark plug -- the fuel/air mixture will ignite once it gets compressed to a certain level.

Answer 5

A petrol engine sucks in air and fuel at the same time, and ignites it with a spark plug.

A diesel sucks in only air, and then injects a metered amount of fuel. The fuel being injected into the hot compressed air is what causes combustion.

Answer 6

The main difference between petrol & diesel engine is :
In petrol engine we have a spark plug,this plug produces saprk & there is combustion of petrol & air mixture in carburator which produces energy & due to that,vehicle's axle moves.
In diesel engine there is nozzle in place of spark plug which only sprays the diesel oil,rest mechanism is same.

Answer 7

Diesel engines don't have spark plugs because the fuel ignites under pressure

Answer 8

hey buddy
the mauin dif between petrol and diersel engine is petrol engine is 4 stroke and diesel is 2 stroke engine