Do modern petrol engines have spark plugs?

Do modern car engines have spark plugs?

The number of spark plugs in your car’s engine is usually the same as the number of cylinders, although some automakers will use two spark plugs per cylinder. Spark plugs are responsible for igniting the fuel that your engine needs to run. … Your car may still start and run, but it will run very poorly.

Why do petrol engines need a spark plug?

As ignition temperature of fuel used in S.I engine is high thats why it require spark plug to ignite the fuel to take power stroke. To ignite the (air+ fuel mixture) in petrol engines. Spark plug is used to start the ignition in cylinder through applying small amount of spark for better combustion.

Do cars with electronic ignition have spark plugs?

In an electronic system, you still have a distributor, but the points have been replaced with a pickup coil, and there’s an electronic ignition control module. … In this system, coils sit directly on top of the spark plugs (there are no spark plug wires), and the system is completely electronic.

Why are petrol engines called spark ignition engines?

The term spark-ignition engine refers to internal combustion engines, generally petrol engines, where the combustion process of the air-fuel mixture is ignited by a spark from a spark plug.

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Is diesel engine have spark plugs?

Spark plugs are used in the petrol engines to ignite the air fuel mixture whereas in diesel engines the presence of spark plugs is not necessary. Technically petrol engines are called as spark ignition engines ( SI ) and diesel engines are called as compression ignition engines (CI ) .