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Force
The forces acting on the piston ring include gas pressure, the elastic force of the ring itself, the inertia force of the reciprocating motion of the ring, and the friction force between the ring and the cylinder and the ring groove. Due to the action of these forces, the ring will generate basic motion such as axial motion, radial motion, and rotational motion. In addition, due to its motion characteristics, the piston ring is accompanied by irregular motion, which inevitably leads to floating and axial vibration, radial irregular motion and vibration, twisting motion, etc. caused by axial irregular motion. These irregular movements often hinder the functioning of the piston rings. When designing piston rings, it is important to fully utilize favorable movements and control the unfavorable side.
Thermal conductivity
The high heat generated by combustion is transmitted to the cylinder wall through the piston rings, thereby cooling the piston. The heat dissipated by the piston ring towards the cylinder wall can generally reach 30-40% of the heat borne by the top of the piston Airtightness
The first function of the piston ring is to maintain a seal between the piston and the cylinder wall, controlling air leakage to the minimum. This function is mainly borne by the gas ring, which means that under any operating conditions, the leakage of compressed air and gas in the engine must be controlled to the minimum to improve thermal efficiency; Prevent cylinder to piston or cylinder to ring seizure caused by air leakage; Prevent faults caused by deterioration of lubricating oil, etc.
Oil control properties
The second function of the piston ring is to appropriately scrape off the lubricating oil attached to the cylinder wall and maintain normal fuel consumption. When too much lubricating oil is supplied, it will be sucked into the combustion chamber, causing an increase in fuel consumption. Moreover, the carbon buildup generated by combustion has a very negative impact on engine performance.
Supportive
Due to the piston being slightly smaller than the inner diameter of the cylinder, without a piston ring, the piston is unstable in the cylinder and cannot move freely. At the same time, the ring also prevents direct contact between the piston and the cylinder, providing support. Therefore, the piston ring moves up and down in the cylinder, and its sliding surface is entirely borne by the ring.
The company 'goods are of good quality and exquieite packaging ,which have passed the audit of many chinese qualification inspection institutions and obtained many certificates,so it 's very popular in every countries.
1. Our packing uses export wooden cases, plastic boxes, cartons or pallets. All the package are very strong, the wooden box is firmly bound, the package is covered with a waterproof film to prevent water or damage during transportation.Before packing, we can also stick corresponding labels and shipping marks according to your needs. All our goods are well packed.
2. According to the quantity, we can use express delivery, air transportation or ocean transportation, automobile transportation, railway transportation, etc. we have our own freight forwarders, and we can also use the designated freight forwarders of customers, which can meet various delivery requirements of customers, such as EXW, FOB, CIF, etc.It can also be exported from many ports in China. Such as Qingdao port, Ningbo port, Lianyungang port, Tianjin port, Suifenhe River and Alashankou in China.
3. We can also send the goods by express if the customers have less goods. According to customer's request, we can use express.such as DHL, TNT, EMS, FedEx, etc. the delivery time is 3-7. Safe, fast and convenient. It's also a good choice for you.
Jinan Carman International Trade Co., Ltd. was established in 2013. Its main business is the export of truck parts to the Russian,Europe and Southeast Asia market.like shacman ,sinoturk ,faw weichai cummins ZF ,cummins XCMG LGMG JCB .DCEC,isuzu caterpiller .komatsu yanmar spare parts .The company has its own warehouse in Jinan with an area of 2000 square meters.and have a large stock .And Ability to quickly collect and deliver goods.Our main business is SINOTRUK, shacman , FAW, Cummins and all kinds of construction machinery accessories. We always adhere to the quality of products as the core, to serve customers as the task.Hope to be able to better communicate with friends from all over the world, and through this communication, promote the development of cultural exchanges and economic exchanges between the two sides.
The most professional truck and spare parts distributor in China;
The leading truck and spare parts exporter in China;
The most comprehensive truck and spare parts solution provider in China;
The most worry-free and most satisfactory and reputable supplier for you in China.
We will never let you down if you choose us.
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