Engine Pistons & Components

From Shopper Outlet Network
Jump to: navigation, search

Contents

About

Pistons & Components
Pistons & Components

A piston is a moving component inside a cylinder,and is made gas-tight by piston rings. The job of the piston in the engine is to transfer force from expanding gas in the cylinder to the crankshaft by using a piston rod and/or connecting rod. This process exerts tremendous amounts of stress and pressure on the piston its components which is why they need to be made very durable and from the right materials. A broken or stressed piston can cause a loss of performance and even catastrophic failure since so much damage would be done to the block and other nearby components.

Related Items

Engine Piston Rings

A piston ring is a split ring that fits into a groove on the outer diameter of a piston in a vehicles engine. The purpose of having this ring on the piston is to seal the combustion chamber, support heat transfer from the piston to the cylinder wall, and regulate engine oil consumption. Most modern automotive engines will have three of these rings which can be placed on different locations of the piston depending on the manufacture. The top two rings are used to control oil but are primarily used for compression sealing while the lower ring is primarily used to control the supply of oil to the liner that lubricates the piston skirt and the compression rings. Continue Reading -->

Engine Piston Rings
Engine Piston Rings

Engine Piston Wrist Pins

The wrist pin is used in an engine to connect the piston to the connecting rod which in turn provides a bearing for the connecting rod to pivot upon as the piston moves. This pin is normally a short hollow rod that is made of steel alloy which provides strength and hardness. This pin needs to be so durable because it experiences some of the highest temperatures in the engine with little lubrication due to its location. It has to withstand all of this while remaining small and light so that it can fit into the piston diameter and not unduly add to the reciprocating mass. To make a light and small piece of metal capable of doing all of this, the materials used are among the most highly engineered of any mechanical component found in the engine. Continue Reading -->

Engine Piston Wrist Pins
Engine Piston Wrist Pins

Engine Pistons - Cast

A piston that is casted is the most common piston type because of its simple development and design. Since this piston is casted, it can be easily mass produced by vehicles manufacturers while ensuring quality which can help provide a cheaper price that most other methods of making a piston. Pistons that are casted are also easily made with silicone which is the element that helps keep the piston from expanding in the cylinder. With the proper percentage of silicone mixed in with the metal, there will be little to no expansion of the piston which allows it to be fitted more precisely into the cylinder. This precise fit eliminates knocking in the engine when starting a cold engine and it eliminates the buildup of fuel on the piston rings which leads to excess pollution being send out through the exhaust. Adding larger amounts of silicone to the metal will cause it to become more brittle which can lead to cracking in extremely high powered engines were there is a larger detonation. Continue Reading -->

Engine Pistons - Cast
Engine Pistons - Cast

Engine Pistons - Forged

Forged pistons are made by ramming a die into a hot but not quite molten ingot of aluminum in a mold under great pressure. The extreme pressure created when forging the piston causes the metal to be denser and have a uniform grain which will make it much stronger and less brittle. Most forged pistons will have low silicone content which makes the piston more susceptible to expanding when subjected to the extreme heats that are created in the engine. For this reason, the piston has to be smaller so that there is space for the piston to expand in the cylinder as the temperature rises. Having this smaller sized piston will cause fuel to get stuck in the piston rings which is bad for emissions and will pollute the environment more. Forged pistons will also rattle around in the cylinder when the engine is started cold. This is not just annoying, but it may also cause wear on cylinder walls if it happens too much. Continue Reading -->

Engine Pistons - Forged
Engine Pistons - Forged

Engine Pistons - Hypereutectic

A hypereutectic piston is casted using hypereutectic alloy which is a metallic alloy with a composition beyond the eutectic point. These hypereutectic pistons are made up out of aluminum alloy which means that there thermal expansion isn’t much when the engine is at operating temperatures. This ability to limit the amount of thermal expansion that is allowed to occur will allow engine designers to specify much tighter tolerances. Hypereutectic pistons are stronger than a standard aluminum piston, but not as strong as most forged pistons. Many high performance vehicles will use hypereutectic pistons because they provide very good strength, while still maintaining the light weight properties of a regular aluminum piston. Continue Reading -->

Engine Pistons - Hypereutectic
Engine Pistons - Hypereutectic


Who Makes This

coming Soon

  • Item Name coming Soon

Where to Buy

Coming Soon