The engine piston, piston ring, piston pin, cylinder sleeve and connecting rod copper sleeve, circlip, cylinder sleeve water blocking ring are called cylinder liner components (commonly known as four matching, six matching, seven matching). It is the moving component of the engine. It cooperates with the fuel system and the valve train to complete the engine intake, compression, combustion work and exhaust stroke, and converts the chemical energy into mechanical energy to output the power. Because it is subject to strong mechanical and thermal loads, it is the most important and most vulnerable component of the engine.
The piston in the cylinder liner assembly requires a reasonable combustion chamber shape and an excellent profile, and the material requires good mechanical properties, heat transfer properties, and controlled thermal expansion properties. Excellent sealing, lubrication and wear resistance quality coordination is required between the piston, the piston ring and the cylinder liner. Engineering machinery diesel engines often operate in harsh environments with many dusts, poor heat dissipation conditions, and high working strength, and most of them use dry thin-walled cylinder liners, which are prone to failure, so the selection of cylinder liner components is more demanding.
It is precisely because heavy truck engine parts have more stringent technical performance requirements for cylinder liner components. The world follows a well-established law of specialization, intensification and mass production. OEMs such as Komatsu, Carter, Mitsubishi, Isuzu, Nissan, Hino, Cummins and other world-renowned manufacturers have never produced piston-cylinder piston rings and their components, and these products are handed over to the R&D and production of professional factories with strong technical foundation, strong product development capability and advanced professional technical equipment. The world-famous engineering machinery engine purely equipped piston cylinder sleeve assembly is concentrated in several world-class professional factories. This is more economical and more reliable than the OEM's large and full-scale production. Similarly, the rules for purchasing cylinder liner components are also required.
Imported engine cylinder liner components are divided into two categories according to their source, namely original parts (including pure parts and supporting parts, ie OEM parts), and auxiliary parts (including imported non-original parts and domestic parts). The main equipment factory purchased from the supporting production plant and sold as an after-sales repair parts as a pure piece, the quality is guaranteed, but the price is expensive. The original supporting production parts of the mainframe are OEM parts, and the original parts are from one family. The quality is the same, only the packaging is different, but the price is lower than the pure parts. The deputy factory parts are non-host supporting factories, like the market needs to be based on the original parts of the physical mapping and imitation, the price is lower, but the quality is far from the original parts are stable and reliable. Because the original parts have undergone a large number of design improvements and reliability tests from trial production to mass production, a complete set of proprietary technology (KNOW-HOW) has been accumulated; and there are large-scale supporting requirements of the OEMs, and OEMs have established professional The advanced production line with high degree of adaptability, the process specification and quality assurance system adapted to mass production, can stably control and ensure the quality of mass production, making it the preferred accessory parts for the main engine factory. The deputy factory parts are completely copied and reproduced according to the original parts, and there is no original technical specification. There is always a certain error in the selection of materials and production processes.
Moreover, in order to save development costs, heavy truck engine parts http://imitation manufacturers did not carry out the necessary reliability tests to test the products, and the imitation products have the same geometrical shape (in fact, the microscopic profiles are very different) and they are put on the market. There are many hidden dangers in technical quality. It should be noted that under modern technological conditions, it is easy to imitate geometric shapes, but the inherent properties of materials and parts are not easily imitated. The quality difference between the deputy factory parts and the original parts is reflected in the difference in surface quality difference, material performance difference and mass production quality stability difference compared with the original parts. This cumulative gap will tell users that the geometry of these two categories of products is almost the same under normal temperature static conditions, but the performance is very different under the actual dynamic conditions of high speed, high load and high heat load. The history of industrial civilization in the world for nearly a hundred years tells us that the seemingly simple engine cylinder liner components of geometric shapes are by no means a good manufacturer.
Germany MAHLE is one of the world's top professional manufacturer of engine piston cylinder liner components. Its products have been used as the supporting factory for top international cars and engines such as Mercedes-Benz, BMW, Ferrari, Audi, Cummins, etc. One of the brands under the chess IZUMI (I As a pure piece, it is matched with Komatsu, Mitsubishi, Hino, Nissan and Isuzu engineering machinery engines, covering most of the supporting market of Japanese construction machinery engines. The quality has been highly praised by the global vehicle machinery manufacturing industry. The major OEMs have determined the technical parameters of the engine piston liner assembly maintenance based on the MAHLE-IZUMI product. MAHLE-IZUMI products are the best choice for both products in accordance with the principle of ensuring product quality and seeking lower procurement costs and facilitating future maintenance. Since our company obtained the exclusive agent qualification of MAHLE engineering machinery, the MAHLE-IZUMI products sold have been highly evaluated by users all over the country after many years of market test. 