SI engine full form is Spark Ignition Engine . It is the heat engine which produce work as output. This work is the result of combustion of Fuel & Oxidizer (AIR) inside the Chamber via a heat generated by Spark ( Spark plug in petrol engines).
Burning of Fuel require Oxidizer so that it can burn properly . In Heat engines this process is done under the controlled condition. As a result it produces work as an output.
Contents
What is SI engine and types?
Spark ignition engine short form is SI engine (SIE). InSI engines, Spark ignites the Fuel+Air mixture, combustion is taking place so that it produces work via a reciprocating moment. This Reciprocating movement involves Suction, compression, expansion Exhaust.
SI engine is Classified in 2 types:
- 2 Stroke SI Engine
- 4 Stroke SI Engine
How SI engine started & it’s working?
SI engine starts with the spark produced in the Combustion chamber via Spark plug. After the Intake process of Fuel & Air mixture this phenomenon occurs. In this process AIR+Fuel mixture get injected in suction process & in compression process this mixture gets compressed upto defined limit (Compression ratio). next is expansion process in which blasting takes place ( due to spark) & than Exhaust ,in which burnt gases get exit out.
What are the applications of SI engine?
SI engine is used for many purpose, Automotive, Railways, Power machines, Industrial equipment & many more. We can tell almost everywhere it is used where the high torque & power is required.
How are SI engines classified?
SI engine classified in many ways depending upon its use or working.
In terms of Strokes:- (1) 2 Stroke engine (2) 4 Stroke engine
In terms of Cylinder:- (1) Inline engine (2) V,W type engine (3) Radial engine (4) Horizontal engines
In terms of Motion:- (1) Rotary engine (2) Reciprocating engine
There are many other ways to classify depending on cooling system , charging method, Engine size & Stroke ratio Etc. you can learn more about it on your Academic books which is a authentic source.
Recommended books for learning SI engines
- Internal Combustion Engine Fundamentals by John Heywood
- Internal Combustion Engines by V Ganesan
- A Textbook of Internal Combustion Engines by R.K. Rajput
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Author: Shubham Mishra ( Vehicle design R&D proffessional )