What is a Piston?
It is a cylindrical metal component which reciprocates in the cylinder under gas pressure. It is connected to the piston rod or to the connecting rod
How does Piston work?
When the engine is running, the piston moves up and down in the cylinder. When the piston reaches the turning point, it slows down and then accelerates again suddenly. This produces inertia forces that act on the piston. When considered together with the forces generated by the gas pressure, this forms the piston force, which is transferred to the connecting rod and crankshaft. Connecting rods are only perfectly vertical at the upper and lower turning points.
The angle of the connecting rod presses the piston against the side of the cylinder wall. The amount and direction of this force constantly change during the combustion cycle, as they depend on the piston force and the angle between the piston crown and connecting rod axis. Pistons are equipped with piston rings. They seal the combustion and working chamber in relation to the crankcase. They also remove the oil from the cylinder walls, thus controlling the oil consumption. Piston rings also discharge the heat absorbed by the piston during combustion to the cooled running surface of the cylinder liner.
How pistons work “3D animation”
- Piston crown is a cylindrical part which tapers to a thinner section.
- Piston skirt is a cylindrical part of the piston below the pressure rings, keeping the piston in alignment with the cylinder. It can contain a scraper ring.
Classification & Design of Piston
Marine diesel engine pistons may be classified as:
- Trunk pistons (small diesel engines) are cast in one piece.
- Pistons with crosshead (longer than the previous and used in medium-speed and high-cylinder power engines) are termed two-piece pistons with detachable crown / composite pistons (light metal base and steel crown).
Types of Pistons
- Trunk Pistons
- Crosshead Pistons
- Racing pistons
- Invar strut piston
- Sliding piston
- Deflector Pistons
- Specialliod Pistons
- Autothermic Pistons
Content of PDF:
1 What is a Piston?
2 Working of Piston
3 Types of Pistons
Invar Strut Piston
4 Parts of Piston
5 Function of Piston
6 Piston Characteristic
7 Piston Advantages and Disadvantages
Advantages of Piston
Disadvantages of Piston
9 FAQ Section
What is an Engine Piston?
What are the types of pistons?
What are the pistons used for?
What is the function of the piston?
What are the components of the piston?
piston: parts, types of pistons and working principle with picture PDF Download