Octane Number – Rating of S.I. Engine Fuels
What is Octane Number? How rating of SI Engines (Spark ignition engines) is done using an octane number? The hydrocarbon fuels used in spark ignition (S.I.) engine have a tendency…
Two Stroke vs Four Stroke Engines
Two Stroke vs Four Stroke Engines - Advantages and Disadvantages of Two Stroke over Four Stroke Cycle Engines. In a two stroke engine, the working cycle is completed in two…
Supercharging of IC Engines
Supercharging of IC Engines - It is the process of increasing the mass (or in other words density) of the air fuel mixture (in spark ignition engines) or air (in…
Spark Plug in IC Engines
A spark plug in IC engines is a device used to produce spark for igniting the charge of petrol engines. It is always screwed into the cylinder head. It is,…
Air Standard Cycles
Internal combustion engines, in which the combustion of fuel occurs in the engine cylinder itself, are non-cyclic heat engines. The temperature due to evolution of heat, because of the combustion…
Carburetor of an IC Engine
The carburetor is a device for atomising and vaporising the fuel and mixing it with the air in the varying proportions to suit the changing operating conditions of the engine. The process…
Governing of IC Engines
The process of providing any arrangement, which will keep the engine speed constant (according to the changing load conditions) is known as governing of I.C. engines. Though there are many…
Air Standard Otto Cycle
Otto Cycle (1876) (Used S. I. Engines): Fig: Engine and Indicator diagram Processes: 0-1 = Suction: The inlet valve is open, the piston moves to the right, admitting fuel-air mixture…
Internal Combustion Engines- Basic Differences
Difference between SI and CI Engines:- The following are the main differences between SI and CI Engines: Spark Ignition (SI) Engine Compression Ignition (CI) Engine Spark plug required No spark…
I.C Engines Important definitions and formulas
Top Dead Centre (T.D.C):- When the piston is at its top most position, i.e. the piston is closet to cylinder head, it is called top dead centre. Bop Dead Centre (B.D.C):- When…
