混凝土攪拌車作為大型施工設備，經常性的高強度工作，所以有時候會出現各種問題，需要進行維修。那麽混凝土攪拌車發動機什麽時候大修呢？
Concrete mixer as a large construction equipment, regular high-intensity work, so sometimes there will be a variety of problems, need to be repaired. So when will the concrete mixer engine be overhauled?
氣缸內徑磨損過大，圓度偏差差為0.04-0.06mm，圓柱度偏差差為0.08-0.12mm（一般按氣缸下半部分和上半部分差的比值測量）。對於多缸發動機，圓度和圓柱度偏差差基於磨損較大的氣缸油量顯著增加，油壓降低，排氣管排放黑煙和藍煙。
Cylinder inner diameter wear is too large, the roundness deviation is 0.04-0.06mm, cylindricity deviation is 0.08-0.12mm （generally measured by the ratio of the difference between the lower part and the upper part of the cylinder）。 For multi-cylinder engines, the difference in roundness and cylindricity is based on the significant increase in cylinder oil volume, decrease in oil pressure, and exhaust pipe emission of black and blue smoke
混凝土攪拌車的功率顯著降低，其峰值高馬力僅為額定功率的60%左右（不包括高空引起的功率下降），氣缸壓力小於標準壓力的65%曲軸過度磨損，曲軸磨損後各軸頸的圓度和圓柱度差超過使用極限，或失圓度和錐度限製在0.10mm。水溫為50^-60℃時，發動機啟動或停止時無法平穩啟動。
The power of concrete mixer truck is significantly reduced, its peak high horsepower is only about 60% of the rated power （excluding the power drop caused by high altitude）， the cylinder pressure is less than 65% of the standard pressure, and the crankshaft is excessively worn. After the crankshaft is worn, the roundness and cylindricity difference of each journal exceeds the service limit, or the roundness and taper are limited to 0.10mm. When the water temperature is 50^-60℃， the engine cannot start smoothly when starting or stopping
混凝土攪拌車廠家認為發動機發出異常噪音或運轉異常的時候要進行大修。發動機熱態運轉時，氣缸（活塞敲缸）有噪音，主軸承或連杆軸承有嚴重振動或敲擊聲。另外在有結冰可能的環境中使用，供水係統必須排空存水，防止管路凍裂；經常檢查係統的密封性，關鍵部位塗抹管路用密封膠。
Concrete mixer truck manufacturers think that the engine is abnormal noise or abnormal operation of the time to carry out overhaul. When the engine is running in hot state, the cylinder （piston knocking cylinder） has noise, and the main bearing or connecting rod bearing has serious vibration or knocking sound. In addition, the water supply system must be emptied and stored in the environment where ice may be used to prevent pipeline frostbite; Check the tightness of the system regularly and apply sealant for pipeline in key parts.
因此要保證混凝土攪拌車高效的工作狀態，日常保養尤為重要，使用前後的檢查工作必不可少，更多內容就來kaiyun網站www.skar-bnat.com谘詢吧！
Therefore, in order to ensure the efficient working state of concrete mixer, daily maintenance is particularly important, and the inspection work before and after use is essential. More content will come to our website www.skar-bnat.com for consultation!
