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Because a diesel engine doesn't need spark to ignite the fuel. Diesels are very high compression engines, and the high compression makes enough heat to ignite the fuel. To prevent the fuel from igniting prematurely, it is injected only after the valves have closed and the piston is near the top of the compression stroke. Once the fuel is injected, the heat from the compression ignites it instantly.
What else can I help you with?
How do you distinguish between a petrol engine and diesel engine when they are not working?
If the engine has spark plug it is said to be petrol engine, and if it has a pump to inject fuel then it is diesel engine.
Is spark plug necessary to run a petrol engine?
unless its a diesel, yes
Can you use diesel engine instead of petrol engine with using injector instead of spark plug?
No!
What is spark ignition or Diesel?
spark ignition engine is also known as petrol engine. but in diesel engines the fuel is burnt due to the high compression of air.so there is no need of spark plug
Why petrol engine is called spark ignition engine?
Because the fuel is ignited by a spark plug rather than by compression as is the case with a diesel.
What is the symbol of glowplug on a petrol engine for?
it could be for the spark plug, petrol engines dont need glow plugs, diesel engines do
What haappens if diesel is used in petrol engine?
The engine wont run because the octane count of diesel is lower compared to the octane count of gasoline. Diesel has a different method of combustion and the spark of spark plug is not enough to fire a diesel engine.
What is defference between disel engine and petrol engine?
Diesel engines have a far higher compression which allows the diesel fuel to explode without the use of a spark plug.
What are the defferences between dessel and petrol engine?
Petrol & Gas engines are spark ignited engines where as diesel engines are compression ignited engines. Petrol engines works with explosion of fuel air mixture due to spark from spark plug inside the cylinder. Diesel engines works with combustion of fuel air mixture due to compression, compressed mixture attains a very high temperature which exceeds the flash point of diesel and starts burning inside the cylinder and the hot gases after burning of fuel misture exerts force on piston which makes the diesel engines work. Diesel engines are highly efficient than petrol engines.
Where can i find the glow plug in ford modeo diesel?
The glow plug is the diesel version of a spark plug. There are 4 glow plugs (1 for each cyl.) located usually near the injector on top of the cylinder head.AnswerThe glow plug is NOT the diesel version of a spark plug, they both do different jobs. The glow plug is there to aid starting when the engine is cold. The spark plug is there to provide the spark for combustion to take place in a petrol/gasoline engine.
How is the engine ignited?
A petrol engine is ignited by a spark plug, and a diesel engine is ignited by the heat produced from the air/ fuel mixture being compressed in the cylinder
Will diesel engine work better with a spark plug?
Actually , there are no spark plugs in a diesel engine
