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IC ENGINES

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Types of IC Engines According to the basic engine design

1. Reciprocating engine

2. Rotary engine According to method of ignition1. Spark ignition engine2. Compression ignition engine

According to the number of strokes per cycle1. Two stroke2. Four stroke3. Six stroke

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Reciprocating Engine

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Rotatory engine

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According to the type of fuel1. Petrol engine2. Diesel engine3. Gas engine

According to the cycle of operation1. Otto cycle engine2. Diesel cycle engine3. Dual cycle engine

According to the number of cylinders1. Single cylinder2. Multi cylinder

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According to the arrangement of the cylinder1. Horizontal engine2. Vertical engine3. V-shaped engine

4. Radial engine5. W-shaped engine

According to the method of cooling1. Air cooled engine

2. Water cooled engine

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Vertical Engine

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Horizontal Engine

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V

Shaped Engine

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Radial Engine

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W - Shaped

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Spark Ignition The combustion process of the air-fuel mixture is

ignited by a spark from a spark plug and fuel is burntin the combustion chamber.

It uses Petrol as fuel. Compression ratio is less.

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Petrol Engine

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Compression Ignition It uses the heat of compression to initiate ignition and

burn the fuel that has been injected into thecombustion chamber.

It uses Diesel as fuel. Compression ratio is more.

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Diesel Engine

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4 Stroke Engine Suction Stroke Compression Stroke Power Stroke Exhaust Stroke

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Valves

There are 2 type of valves - a) Inlet Valve b) Exhaust Valve

The valve which allows mixture into the cylinder isthe inlet valve; the one through which the spent gasesescape is the exhaust valve.

They are designed to open and close at precisemoments, to allow the engine to run efficiently at allspeeds.

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Valve TimingThe valve timing is the precise timing of the openingand closing of the valves.

The 4-stroke cycle1 = TDC2 = BDCA: Intake

B: Compression

C: Power

D: Exhaust

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Valve Train

It is a device that controls the operation of the valves, inwhich a sequence of components transmits motionthroughout the assembly. A traditional reciprocatinginternal combustion engine uses valves to control air and

fuel flow into and out of the cylinders, facilitatingcombustion.

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Engine BalancingFor complete balancing we have to Balance -

Rotating Mass Reciprocating Mass Firing Forces

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Engine Cooling

Air Cooling

Oil Cooling

Water Cooling

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Engine Cooling Water Cooled

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Engine Cooling Parts

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Superchargers

It is a type of air compression device powered by the enginecrankshaft. It is a way of increasing engine power by forcingmore air into the cylinder so that more power can be producedfrom each power stroke

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Turbochargers

A turbocharger is a supercharger that is driven by theengine's exhaust gases, by means of a turbine. It consists

of a two piece, high-speed turbine assembly with oneside that compresses the intake air, and the other sidethat is powered by the exhaust gas outflow..

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Thank You