Why deflector is provided on the top of piston in two-stroke cycle engines?

In a cross-flow engine, the transfer and exhaust ports are on opposite sides of the cylinder, and a deflector on the top of the piston directs the fresh intake charge into the upper part of the cylinder, pushing the residual exhaust gas down the other side of the deflector and out the exhaust port.

What is the top of piston?

The piston head is the top surface (closest to the cylinder head) of the piston which is subjected to tremendous forces and heat during normal engine operation. A piston pin bore is a through hole in the side of the piston perpendicular to piston travel that receives the piston pin.

What is the function of piston in IC engine?

The piston is a fundamental part of the internal combustion engines. It has a reciprocating motion and converts heat energy into mechanical power. It travels up and down inside a cylinder when the engine produces power. The purpose of the piston is to stand the expansion of gases and send it to the crankshaft.

What is a deflector piston?

Deflector pistons are used in two-stroke engines with crankcase compression, where the gas flow within the cylinder must be carefully directed in order to provide efficient scavenging. To prevent the incoming mixture passing straight across from one port to the other, the piston has a raised rib on its crown.

What is deflector in 2-stroke engine?

A deflector is provided on the top of ‘crankcase scavenged two-stroke’ piston for better scavenging. As you might be knowing, the compressed charge passes through the transfer port into the engine cylinder, it forces the burnt fuel out of the chamber, and this is called scavenging.

What is piston crown?

As a very important part of your engine’s combustion chamber, the piston crown seals the cylinder and transmits gas pressure to the connecting rod. It is therefore highly advisable that you ensure your engine’s piston crowns are kept in optimal working order.

What is engine top end?

[MUSIC PLAYING] An engine top end includes all the parts that fasten on top of the cylinder block. 00:00:23. This would include the cylinder heads, valves, sometimes the camshafts, and other related components.

What are flat top pistons?

Flat-top Pistons As simple as it sounds, a flat-top piston has a flat top. Flat-top pistons have the smallest amount of surface space; this enables them to create the most force. This type of piston is ideal for creating efficient combustion. Flat-top pistons create the most even flame distribution.

What is deflector in engine?

Deflector pistons are used in two-stroke engines with crankcase compression, where the gas flow within the cylinder must be carefully directed in order to provide efficient scavenging.

What is a a deflector on a 2 stroke engine?

A deflector is provided on the top of ‘crankcase scavenged two-stroke’ piston for better scavenging. As you might be knowing, the compressed charge passes through the transfer port into the engine cylinder, it forces the burnt fuel out of the chamber, and this is called scavenging.

Why is a deflector provided on the top of the piston head?

Deflector provided on the top of the piston head in two-stroke IC engine because, 2S engine complete their operation in one revolution of crank. There is no sufficient time for in and out of fuel and exhaust. Deflector is use for remove the exhaust charge after combustion.

What is the purpose of a gas deflector in an engine?

The deflector gives a direction to the burnt gases to move out of the cylinder smoothly. Thus, resulting in better scavenging, as it would be, without the deflector. A deflector is provided on the top of ‘crankcase scavenged two-stroke’ piston for better scavenging.

What are the main components of an IC engine?

CONSTRUCTION & COMPONENTS OF IC ENGINE: 1. Cylinder Block: It is the heart of the engine. It consists of three parts. (i) The cylinders in which the piston slides up and down. (ii) The ports or openings for valves. (iii) The passages (water jackets) for the flow of cooling water.