機(jī)械外文翻譯--發(fā)動(dòng)機(jī)拉缸問(wèn)題探討(文件)
【正文】 the engine temperature too high. (5) watercourse or by blocking the ventilation radiator Watercourse blocked will inevitably lead to reduced water circulation, which affects the heat dissipation. Cooler air by blocking, affecting the effective thermal radiator area, effective heat dissipation area of reduced ability to decrease heat dissipation, which would make the engine caused by excess heat is not distributed the engine temperature is too high. (6) injector fuel injection advance angle is too small or too large Fuel injection advance angle is too small, so that bustion pushed back, resulting in increased plement bustion, fuel injection bustion heat generated by excessive increase in both cases will cause the engine temperature is too high. 3 oil shortage Do not check the oil quantity required, or in the work process due to loosening caused by oil leakage of oil pipes, can cause interruption of lubricating oil film, the surface loss of oil piston and cylinder, causing serious wear and tear, occurred pull cylinder, connecting rod bearings and other serious incidents burning , especially in the work process due to oil leakage, failure to make timely discovery, will have serious consequences. Caused by the surface of the piston and the cylinder fuel supply shortage of oil because there are several main areas: Lubrication plug Lubrication System When the longterm use, there is no regular cleaning, excessive impurities will plug the oil line or oil filter, so that enough fuel cycles. piston rings and piston scraping the edge of the oil capacity is too strong Lubricating oil capacity is too strong will scratch scratch, resulting in insufficient lubricant. Oil metamorphic Degeneration caused by engine oil lubrication between the piston and cylinder liner deterioration in the terms, accelerated wear and tear caused pullcylinder, resulting in deterioration of the main reasons oil are: (1) cooling water, fuel leaking into the next due to crankcase (2) mixed with too much dust under the crankcase 4 piston pin and piston assembly of tight Piston pin and piston assembly too tight, so that the piston deformation, the formation of antioval, changing the normal standards of space, form a partial destruction of oil film clearance is too small, causing dry friction pull cylinder overheating. 5 repair assembly error Repair assembly errors, and missed mounted piston pin snap ring or fully loaded tank, the engine piston pin sprang at work scratching caused by pulling cylinder liner. Installation, cleaning work is poor, the hard objects of metal scrap or crushed into the tank, can cause pulling cylinder. In addition, the piston rings installed wrong, install anti, leakage may be caused by pulling cylinder installed. Of oil and gas piston ring of the subring, oil ring is mainly used to scrape oil, lubricants and to evenly distributed in the inner surface of the cylinder to improve the conditions for cylinder lubrication. Gas ring main is to ensure that the sealing piston and cylinder, gas ring in general has set up one, two, three. According to the working conditions as well as the pressure difference, the Tao gas ring in the material selection and structural design is different, if the piston rings installed wrong, or omitted to install antiloaded, are likely to result in Mifengbuyan or no role in the oil scraper , so that the inner surface of cylinder liner lubrication condition deteriorated, resulting in short of oil caused by pullcylinder. 6 piston r
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