The reader, Ms. Lee, came to the e-mail and asked: My car was open for two years, but the engine was repaired twice. I heard that the engine is the "heart" of the car. I think a problem with the "heart" will affect the life of the vehicle. I would like to ask: How to maintain the car's engine?

The reporter consulted Wu Shigui, the technical staff of Anaichi, on this issue. According to Mr. Wu, 80% of car owners currently think that car maintenance is changing three filters and oil; 70% of car owners think that engine overhaul cannot be avoided or postponed. At this stage, the concept of vehicle maintenance by vehicle owners is too vague. If we compare vehicles to humans, the idea of ​​most car owners is that people only need to eat and everything will be fine, and vitamins, fruits, or health products are not necessarily ingested. Obviously, this practice cannot maintain long-term health.

Specifically speaking about how to protect the engine, Mr. Wu said that when the car engine is stopped for a period of time, the oil on the internal friction interface of the engine will flow back into the oil sump of the engine. At this time, the engine is started. Lubricating oil pumps have no time to send lubricants to the various friction parts that need to be lubricated. In a short period of time, dry friction that is lost due to periodic lubrication will be generated, causing serious abnormal wear of the engine. In the cold state, multiple starts will aggravate the degree of wear of the moving parts. This strong wear due to cold start accounts for more than 60% of the total wear of the car's engine.

Therefore, in order to prevent engine “killer” dry friction from endangering the vehicle and achieve the purpose of “maintaining repairs for generations”, anti- friction agents can be properly used. Its principle is to use lubricating oil as a carrier, making use of its unique “heat activated” characteristics. The nano-particles penetrate into the metal surface of the engine, and its polymer network structure is firmly fixed on the metal surface and does not fall off with the loss of lubricating oil. In this way, during each cold start of the engine, there will be a layer of protective film to protect the friction surfaces, which will not cause too much damage to the engine due to cold start, thereby prolonging the service life of the engine.

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Non-woven fabric is a kind of non-woven fabric, which directly uses polymer chips, short fibers or filaments to form fibers through airflow or mechanical netting, and then undergo hydroentangling, needle punching, or hot rolling reinforcement, and finally finishing The resulting non-woven fabric. A new type of fiber product with soft, breathable and flat structure. The advantage is that it does not produce fiber debris, is strong, durable, silky soft, and has a cotton feel. Compared with cotton fabrics, non-woven bags are easy to shape, and It is cheap, durable, and disposable. Insulating and conductive. Softness and stiffness. Density and expansion. Isotropic, anisotropic. Filterability, breathable and impermeable. Elasticity and stiffness. Light, loose and warm. Thin as a cicada's wings, thick as felt. Waterproof and breathable. Ironing, stitching, and compression molding. Flame retardant and antistatic. Water-permeable, waterproof, abrasion-resistant, and flocking. Wrinkle resistant, good elasticity, high moisture absorption, water repellency. SS non-woven fabrics are mostly used in sanitary materials, so in the mechanical design, the SS machine tends to make the non-woven fabric softer, and the ss can also be processed to become more rigid and suitable for packaging materials.

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