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MF440 Diesel Engine Piston Set
The design of the piston varies from engine to engine. It largely depends upon the design of the cylinder head. Generally, low-cost, low-performance engines have a flat-head-piston. The top of the piston is called the head or crown.
The piston set is designed to withstand high temperatures, pressures, and speeds, ensuring even pressure and temperature distribution. It is specially balanced to achieve optimal performance. Made from high-strength materials, the piston set is highly wear-resistant, preventing deformation and corrosion. Its durability ensures long-lasting use for many years.
The Accurate Balance for Weight Reduce Engine’s Voice, Giving People A Sense of Comfort:
The piston set has been designed with precise weight balancing to ensure even weight distribution. This design reduces engine vibration and noise, resulting in a smoother and more comfortable driving experience. The precise weight balancing of the piston set also helps to improve the engine’s overall performance and efficiency. By reducing the amount of vibration and noise, the engine can operate more smoothly and efficiently, resulting in better fuel economy and reduced wear and tear on engine components.
Excellent Fatigue Resistance:
The piston set has undergone rigorous fatigue testing to ensure excellent fatigue resistance. This design allows the piston set to withstand long periods of high-speed operation in demanding work environments. The fatigue testing process involves subjecting the piston set to repeated cycles of stress and strain, simulating the real-world conditions that the engine will encounter during operation. The piston set’s ability to withstand these conditions is critical to the engine’s overall performance and longevity. The excellent fatigue resistance of the piston set ensures that it can operate reliably and efficiently for extended periods, even under the most demanding conditions. This feature is essential for applications that require continuous operation, such as heavy-duty machinery and vehicles. The piston set is designed to provide exceptional performance and reliability, making it an ideal choice for a wide range of industrial and commercial applications.
Coating Treatment Customized Service: the picture shows without any coating process, so that it does not look like smooth, but you can choose the treatment way to be processed, then we will manufacture as you demand.
Product Parameter：
|
Product Name |
Piston Set |
|
Application |
Engineering Machinery Engine |
|
Car Number |
Customized |
|
Size |
STD |
|
Material |
Customized |
|
Engine Number |
MF440 |
|
Condition |
100% Brand-new |
|
Warranty |
6 Months |
|
Packing |
Neutral Packing |
|
Application Industries |
Machinery Repair Shops, Construction Works, Energy & Mining |
Functions of Piston:
1.To receive the thrust from the explosion and transmit the force to the crankshaft through the connecting rod.
2.Also, to act as a seal so that the high combustion pressure does not escape to the crankcase.
3.To serve as a guide and a bearing for the connecting rod’s small end.
It must also have the following necessary qualities:
1.Rigidity to withstand high pressure.
2.Lighter in weight to keep its inertia forces to the minimum and enable higher engine speeds.
3.Silence in operation both during warming up and normal running.
4.Its design should prevent it from seizures.
5.Its material must have good thermal conductivity for efficient heat transfer. Thus, it reduces the risk of detonation and allows a higher compression ratio.
6.Its material should also have low expansion qualities.
7.Offer resistance to corrosion due to combustion.
8.It should be of the shortest possible length so as to reduce the overall engine size.
9.It must have a long service life.
Design:
The design of the piston varies from engine to engine. It largely depends upon the design of the cylinder head. The top of the piston is called the head or crown. Generally, low-cost, low-performance engines have a flat-head-piston. However, in some cases, when it comes very close to the valves, the engineers provide a valve relief in the crown. Pistons in some high-performance engines have a raised dome that increases compression ratio and controls combustion.
Some engines use especially dished pistons to create the desired shape of the combustion chamber and the cylinder head. In case the crown contains a part of the combustion chamber, you can control the compression ratio more accurately. However, this design has a disadvantage. In this design, a large amount of heat passes through the piston and the rings.
Piston Lands:
The top of the piston has grooves cut on its circumference to fit the piston rings. You know the bands between the grooves as ‘lands.’ The role of the lands is to support the rings against gas pressure. The lands also guide the rings, so they rotate freely in a circular direction. The supporting webs transmit the explosion force directly from the crown to the piston-pin bosses. Thus, it relieves the large loads from the ring grooves.
Skirt:
The part below the piston rings is the ‘skirt.’ Its role is to form a guide and absorb the side thrust created by the gas pressure. The skirt has bosses on the inside to support the pin. It fits quite close in the cylinder; however, it is separated from the cylinder walls by lubricating oil. The combustion forces are transmitted from the crown to the connecting rod through webs inside the piston. Besides, the bosses act as a bearing surface for the rocking motion of the connecting rod. The thick-section webs transfer heat from the crown to the gudgeon-pin bosses & skirt.
Earlier engines used cast iron for its wear-resistant qualities. However, modern engines use aluminum-alloy, containing silicon for pistons to reduce weight. It is three times lighter than aluminum, so it has lower inertia. In addition, aluminium-alloy possesses high thermal conductivity, which allows it to run cooler.
