Parts of Engine – 1

·         The function of crankcase in two stroke petrol engines is

Answer: It holds the fuel air mixture during engine cycle.

·         Connecting rods are generally of the following form

Answer: Connecting rods are generally of forged I-section type.

·         The purpose of crankcase ventilation is to

Answer: Crankcase ventilation removes vaporised water and fuel.

·         The escape of burned gases from the combustion chamber past the pistons and into the crankcase is called

Answer: Blow by is the surging of burned gases from combustion chamber into the crankcase.

·         Connecting rod is attached to the piston by the

Answer: Connecting rod is attached to the piston by piston pin.

·         Engine pistons are generally made of aluminium alloy because

Answer: Aluminium alloy are used because they are lighter.

·         Piston compression rings are made of

Answer: Cast iron is used for piston compression rings.

·         Gudgeon pins are made of

Answer: Gudgeon pins and piston are made of same material.

·         The purpose of a piston pin is that

Answer: Piston pin connects the piston to the connecting rod.

·         When no.1 piston of a four cylinder in line four stroke engine is performing the power stroke, no.4 piston is on the stroke called

Answer: When no.1 piston is on power stroke, no.4 piston will be on suction stroke.