Best answer: What is meant by SI engine?

A spark-ignition engine (SI engine) is an internal combustion engine, generally a petrol engine, where the combustion process of the air-fuel mixture is ignited by a spark from a spark plug.

What is SI engine and CI engine?

in S.I engines,ignition process is carried out with the help of a spark plug which ignites a mixture of air and fuel that is compressed in the combustion chamber. Whereas,a diesel engine also known as Compression Ignition (C.I) engine works on the basis of Diesel cycle or Constant pressure heat addition cycle.

What is difference between IC engine and CI engine?

In this article, we will discuss about the difference between SI engine and CI engine. The Spark Ignition (SI) engine, as its name indicates uses spark to ignite the fuel. And in Compression Ignition (CI) engine, the air is compressed within the cylinder and the heat of this compression air is used to ignite the fuel.

Which is better Si or CI?

The high temperatures achieved in CI engines cause the fuel to ignite. SI engines are high speed while CI engines are low speed. SI engines have a lower thermal efficiency than CI engines.

What is CI engine for?

Compression ignition (CI) engines

Near TDC of the compression stroke, fuel is injected directly into the cylinder using a high-pressure fuel injector. … Load is controlled in a CI engine by the amount of fuel injected limited by the amount of charge gas oxygen.

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How does a SI engine work?

A spark-ignition engine (SI engine) is an internal combustion engine, generally a petrol engine, where the combustion process of the air-fuel mixture is ignited by a spark from a spark plug.

Why is petrol gasoline used in SI engine?

In recent times, ethanol has been commonly used as a fuel additive or an alternative fuel in spark ignition (SI) engines and compression-ignition (diesel) engines. The use of ethanol, particularly in SI engines, has become attractive due to its relatively high octane number and the fact that it burns clean [4,5].

Who made petrol engine?

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