PARTS OF AN INTERNAL COMBUSTION ENGINE

PARTS OF AN INTERNAL COMBUSTION ENGINEByManjunath chincholi1CylinderIt is the main body of an engine in which piston reciprocates to develop power .It can withstand with very high pressure and temperature (2800 c)If cylinder block & crank case are made integral , then the construction is called monoblockIt should be good conductor of heatGenerally material used is cast ironFor heavy duty engines alloy steels are used

Cylinder Arrangement1. In line arrangementIn this type , a number of cylinder are arranged in a line i.e., placed side by side vertically

Opposed cylinder typeHere the two cylinders are arranged horizontal opposite to each otherThey are placed 180

V-engineHere two cylinders are placed with their axes at 60 degThey are placed on a common crank case and crankshaft

Radial engineThey are arranged in a radial fashion with a common crankshaft They are mainly used in air craft engine

PistonIt is a reciprocating part of the engine Materials aluminium alloys , cast steel , cast ironFunctions It forms a tight seal within the cylinder

Connecting rodIt is used to connect piston to the crankshaftIt converts reciprocating motion into rotary motion of the crankshaftMaterials nickel ,chromeManufacturing process- casting and forging

Crankshaft It is mounted on the bearings Convert s reciprocating motion into rotary motionMaterials alloy steel or cast ironIt experiences centrifugal forces

ValvesEach engine cylinder has two valvesIt is usually placed at 45 deg or 30 degMaterials silicon chrome steelThey are coated with aluminium

Value Actuating MechanismSide valve mechanismOver head valve mechanismOver head inlet & side exhaust valve mechanism

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