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氣缸套磨損的原因分析

來源:http://www.pxhecheng.com發布時間:2021-09-21 14:52:50

1、長時間低溫運轉。長時間地低溫運轉,一是造成燃燒不良,積碳從氣缸套上部開始蔓延,使氣缸套上部產生嚴重的磨料磨損;二是引起電化學腐蝕。
1. Long time low temperature operation. Long time low-temperature operation causes poor combustion and carbon deposition spreads from the upper part of the cylinder liner, resulting in serious abrasive wear on the upper part of the cylinder liner; The second is to cause electrochemical corrosion.
2、上部承受壓力大,使氣缸磨損呈上重下輕?;钊h在自身彈力和背壓的作用下緊壓在缸壁上,正壓力越大,潤滑油膜形成和保持越困難,機械磨損加劇。在作功行程中,隨著活塞下行,正壓力逐漸降低,因而氣缸磨損呈上重下輕。
2. The pressure on the upper part is large, which makes the wear of the cylinder heavy at the top and light at the bottom. Under the action of its own elasticity and back pressure, the piston ring is tightly pressed on the cylinder wall. The greater the positive pressure is, the more difficult it is to form and maintain the lubricating oil film, and the mechanical wear is intensified. During the power stroke, the positive pressure decreases gradually as the piston goes down, so the wear of the cylinder is heavy at the top and light at the bottom.
3、進入機械雜質,使氣缸中部磨損加劇??諝庵械幕覊m、潤滑油中的雜質等,進入活塞和缸壁間造成磨料磨損?;覊m或雜質隨活塞在氣缸中往復運動時,由于在氣缸中部位置的運動速度最大,故加劇了氣缸中部的磨損。
3. Enter mechanical impurities to aggravate the wear in the middle of the cylinder. Dust in the air and impurities in the lubricating oil enter between the piston and the cylinder wall, causing abrasive wear. When dust or impurities move back and forth with the piston in the cylinder, the wear in the middle of the cylinder is exacerbated due to the maximum movement speed in the middle of the cylinder.

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4、潤滑油濾清器濾清效果差。若潤滑油濾清器工作不正常,潤滑油得不到有效的過濾,含有大量硬質顆粒的潤滑油必然使氣缸套內璧磨損加劇。
4. The filtering effect of lubricating oil filter is poor. If the lubricating oil filter does not work normally and the lubricating oil cannot be filtered effectively, the lubricating oil containing a large number of hard particles will inevitably aggravate the wear of the inner wall of the cylinder liner.
5、空氣濾清器濾清效率低??諝鉃V清器的作用是清除進入氣缸的空氣中所含的塵土和沙粒,以減少氣缸、活塞和活塞環等零件的磨損。實驗表明,發動機若不裝空氣濾清器,氣缸的磨損將增加6-8倍??諝鉃V清器長期得不到清洗保養,濾清效果差,將加速氣缸套的磨損。
5. Low filtration efficiency of air filter. The function of the air filter is to remove the dust and sand contained in the air entering the cylinder, so as to reduce the wear of parts such as cylinder, piston and piston ring. Experiments show that if the engine is not equipped with air filter, the wear of cylinder will increase 6-8 times. The air filter cannot be cleaned and maintained for a long time, and the filtering effect is poor, which will accelerate the wear of cylinder liner.
6、潤滑條件不好,使氣缸套上部磨損嚴重。氣缸套上部鄰近燃燒室,溫度很高,潤滑條件很差。新鮮空氣和未蒸發的燃料沖刷和稀釋,加劇了上部條件的惡化,使氣缸上都處于干摩擦或半干摩擦狀態,這是造成氣缸上部磨損嚴重的原因。
6. Poor lubrication conditions cause serious wear on the upper part of the cylinder liner. The upper part of the cylinder liner is close to the combustion chamber, with high temperature and poor lubrication conditions. The scouring and dilution of fresh air and non evaporated fuel aggravate the deterioration of the upper conditions, making the cylinder in dry friction or semi dry friction, which is the reason for the serious wear of the upper part of the cylinder.

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