機(jī)械外文翻譯--發(fā)動(dòng)機(jī)拉缸問題探討-資料下載頁(yè)
2025-05-12 00:03本頁(yè)面
【導(dǎo)讀】因，并提出了防止拉缸的措施。翻譯用詞比較準(zhǔn)確，文筆也較。環(huán)或活塞與缸套的工作表面出現(xiàn)拉傷、拉毛、拉成溝槽的現(xiàn)象。拉缸具有相當(dāng)?shù)奈?。的壽命大為降低，使活塞與缸套咬死，造成發(fā)動(dòng)機(jī)損壞。因此，掌握拉缸形成的機(jī)。由于發(fā)動(dòng)機(jī)溫度過高，使活塞膨脹量過大，消除配合間隙，造成拉缸。散熱器遭腐蝕或破損，水管老化碰壞，水管接頭松動(dòng)，器直接經(jīng)旁通管流回冷卻水泵，不經(jīng)過散熱器，這就是冷卻水的小循環(huán)過程。強(qiáng)制冷卻水在發(fā)動(dòng)機(jī)水套和散熱器之間進(jìn)行循環(huán)靠的是冷卻水泵，冷卻水泵損壞，動(dòng)機(jī)的多余熱量得不到散發(fā)而造成發(fā)動(dòng)機(jī)溫度過高。事故，特別是工作過程因機(jī)油外漏，沒有及時(shí)發(fā)現(xiàn)，將產(chǎn)生嚴(yán)重后果。面潤(rùn)滑條件惡化，造成缺油引起拉缸。此外，活塞、活塞環(huán)、缸套的質(zhì)量及材料對(duì)拉缸也有一定的影響。明進(jìn)了柴油，潤(rùn)滑油變質(zhì)應(yīng)查明原因，排除后更換潤(rùn)滑油。按期進(jìn)行例保、一級(jí)保養(yǎng)和二級(jí)保養(yǎng)。
【正文】 ioration causes should be identified, removed, replace the oil. To strictly enforce the maintenance of the system, scheduled for cases of insurance, maintenance and a maintenance 2. Do not overload operation. Meng did not start after refueling door, especially in the cold winter, subject to a few minutes and then started to run lowspeed operation. The event of unusual circumstances, such as low oil pressure, water temperature high, abnormal noise, etc., should be promptly removed, insisted on not sick job. In the repair of assembly, it should be strict pliance with technical standards and technological requirements Spare parts for new ones to be used to detect one by one, to remove nonpliant spare parts to go out and can not believe that the new product is qualified product. Install cylinder, the cylinder should be flat, the pressure to the role of the middle of the cylinder, and slowly pressurized, do not use impact. After you install, testing, testing whether the cylinder and piston assembly clearance gap meet the required standards. Similarly, the detection of piston ring and groove side clearance, backlash, piston ring end gap and piston pin hole with live seat assembly clearance pliance with regulatory requirements, check whether there are cracks as well as the piston ring elastic pliance requirements, install a good Central, can be freely, without catching the phenomenon. Piston Ring Gap 3 (terminal gaps, backlash, backlash) in check is the piston rod assembly of a focus group, in particular the endgap size is particularly important at the slightest mistake could result in pullcylinder, ring end gap of the inspection should carried out according to process requirements, check the piston ring end gap of the process requirements are: the ring into the cylinder, the piston ring with the piston at the top of the roof into the cylinder where the top ring to the piston stroke measured at the smallest diameter, so that measurement data are correct. Carefully check the piston, connecting rod and crankshaft installation position deviation, demand technical specifications that meet standards for calibration. In the market to buy the piston, is hard to determine strengths and weaknesses, in the best preassembled to eliminate the stress treatment, about 6080 degrees on the piston heating oil in 6 hours, in order to eliminate the stress, so that the piston assembly and stability before use. When installing the piston rings must be installed with a position where the Tao can not be installed wrong, loaded trans, drain installation, pay attention to directions, twist ring round incision upward, cylindrical cut down, marked side facing up, at the same time, in the loaded cylinder must be clean and processing certain lubricants, each province should be required to stagger the ring I, ring opening with the first axis of the crankshaft at 45 degrees, the remaining openings in each province by 90 degrees, 180 degrees 11 to stagger. Assembly is pleted, must be approved by the thermal runin 15 hours or so, testing runin should be the first lowspeed operation, and then mediumspeed operation, should pay attention to noise, oil pressure, water temperature, etc., in determining no anomalies, and then put into production. In short, as long as we grasp the cylinder caused by pulling the reasons for the scientific management and the proper use of and strictly abide by rules to implement preventive measures, we will be able to reduce and even avoid the occurrence of pullcylinder.
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