影響排氣管冒黑煙和加速無力的原因，主要是混合氣經燃燒后，其排放超出調控范圍。使用診斷儀檢測發動機控制模塊存在兩個當前故障：2511-001，左側廢氣再循環調節器Y27/9調節不良；2348-001，增壓壓力控制系統增壓壓力過低。
The main reason that affects the exhaust pipe to emit black smoke and accelerate weakly is that the emission of mixture is beyond the control range after combustion. Use the diagnostic instrument to detect two current faults in the engine control module: 2511-001, poor adjustment of the left exhaust gas recirculation regulator Y27 / 9; 2348-001, low boost pressure of the boost pressure control system.
根據2511-001故障指導，檢查導線和插接件連接正常，使用診斷儀的部件執行功能調節廢氣再循環調節器Y27/9，觀察其沒有動作。拆卸Y27/9檢查發現此調節器被尾氣的黑顆粒污染卡滯，不能被電機驅動打開或關閉廢氣再循環閥，清洗Y27/9使調節器可以正常打開及關閉。
According to the 2511-001 fault guidance, check that the connection of the wire and connector is normal, use the components of the diagnostic instrument to perform the function, adjust the exhaust gas recirculation regulator Y27 / 9, and observe that it does not act. The Y27 / 9 was disassembled and checked. It was found that the regulator was jammed by the black particles in the exhaust gas and could not be opened or closed by the motor drive. The Y27 / 9 was cleaned so that the regulator could be opened and closed normally.
根據2348-001故障指導，檢查增壓空氣系統的密封性，使用專用工具對進氣增壓系統檢測，發現進氣溫度傳感器脫離進氣管，將其裝復，測試進氣系統無漏氣現象。
According to the 2348-001 fault guidance, check the tightness of the charge air system, use special tools to test the intake pressure system, and find that the intake temperature sensor is separated from the intake pipe, then install it again, and test that the intake system has no air leakage.
裝復發動機附件，清除控制模塊故障碼，原地試驗發動機可以將轉速提升3000r/min以上，排氣管隨著發動機轉速的提高噴出很多黑色顆粒，表明車輛一直處于燃燒不完全的工作狀態。路試將發動機轉速提升3000r/min以上時，車輛突然出現坐車現象，此現象出現后發動機的動力降低，空擋時發動機轉速不能提到3000r/min以上，只能保持在2700r/min。
When the engine accessories are replaced and the control module fault code is cleared, the engine speed can be increased by more than 3000r / min in situ test, and a lot of black particles are ejected from the exhaust pipe with the increase of engine speed, indicating that the vehicle has been in the working state of incomplete combustion. When the engine speed is increased by more than 3000r / min in the road test, the vehicle suddenly appears the phenomenon of sitting. After this phenomenon occurs, the power of the engine decreases. In neutral gear, the engine speed can not be increased to more than 3000r / min, but can only be maintained at 2700r / min.
使用診斷儀檢測發現2348-001故障碼依然存在，再一次檢測增壓空氣系統密封性正常，檢查增壓壓力傳感器的數值，在加速時數值變化小且存在滯后現象。將壓力傳感器拆下檢查無堵塞漏氣現象，使用真空泵改變增壓壓力傳感器真空度，觀察診斷儀的數值變化不明顯，判斷增壓壓力傳感器損壞。
It is found that the 2348-001 fault code still exists by using the diagnostic instrument. Once again, it is detected that the tightness of the charge air system is normal, and the value of the boost pressure sensor is checked. During acceleration, the value changes little and there is hysteresis. Remove the pressure sensor to check that there is no blockage and air leakage. Use the vacuum pump to change the vacuum degree of the boost pressure sensor. Observe that the value of the diagnostic instrument does not change significantly, and judge that the boost pressure sensor is damaged.
故障排除：清洗廢氣再循環調節器Y27/9，更換增壓壓力傳感器，進行發動打吩空制模塊數據匹配，故障排除。
Troubleshooting: clean the exhaust gas recirculation regulator Y27 / 9, replace the boost pressure sensor, match the data of the engine air handling module, and troubleshooting.
故障總結：通過對發動機檢查及根據診斷儀的故障指導，分析柴油發動機廢氣渦輪增壓器的結構和工作原理，逐步排除可能存在故障的部件，將故障徹底排除。
Fault summary: by checking the engine and according to the fault guidance of the diagnostic instrument, analyze the structure and working principle of the diesel engine exhaust turbocharger, gradually eliminate the components that may have faults, and completely eliminate the faults.
The main reason that affects the exhaust pipe to emit black smoke and accelerate weakly is that the emission of mixture is beyond the control range after combustion. Use the diagnostic instrument to detect two current faults in the engine control module: 2511-001, poor adjustment of the left exhaust gas recirculation regulator Y27 / 9; 2348-001, low boost pressure of the boost pressure control system.
根據2511-001故障指導，檢查導線和插接件連接正常，使用診斷儀的部件執行功能調節廢氣再循環調節器Y27/9，觀察其沒有動作。拆卸Y27/9檢查發現此調節器被尾氣的黑顆粒污染卡滯，不能被電機驅動打開或關閉廢氣再循環閥，清洗Y27/9使調節器可以正常打開及關閉。
According to the 2511-001 fault guidance, check that the connection of the wire and connector is normal, use the components of the diagnostic instrument to perform the function, adjust the exhaust gas recirculation regulator Y27 / 9, and observe that it does not act. The Y27 / 9 was disassembled and checked. It was found that the regulator was jammed by the black particles in the exhaust gas and could not be opened or closed by the motor drive. The Y27 / 9 was cleaned so that the regulator could be opened and closed normally.
根據2348-001故障指導，檢查增壓空氣系統的密封性，使用專用工具對進氣增壓系統檢測，發現進氣溫度傳感器脫離進氣管，將其裝復，測試進氣系統無漏氣現象。
According to the 2348-001 fault guidance, check the tightness of the charge air system, use special tools to test the intake pressure system, and find that the intake temperature sensor is separated from the intake pipe, then install it again, and test that the intake system has no air leakage.
裝復發動機附件，清除控制模塊故障碼，原地試驗發動機可以將轉速提升3000r/min以上，排氣管隨著發動機轉速的提高噴出很多黑色顆粒，表明車輛一直處于燃燒不完全的工作狀態。路試將發動機轉速提升3000r/min以上時，車輛突然出現坐車現象，此現象出現后發動機的動力降低，空擋時發動機轉速不能提到3000r/min以上，只能保持在2700r/min。
When the engine accessories are replaced and the control module fault code is cleared, the engine speed can be increased by more than 3000r / min in situ test, and a lot of black particles are ejected from the exhaust pipe with the increase of engine speed, indicating that the vehicle has been in the working state of incomplete combustion. When the engine speed is increased by more than 3000r / min in the road test, the vehicle suddenly appears the phenomenon of sitting. After this phenomenon occurs, the power of the engine decreases. In neutral gear, the engine speed can not be increased to more than 3000r / min, but can only be maintained at 2700r / min.
使用診斷儀檢測發現2348-001故障碼依然存在，再一次檢測增壓空氣系統密封性正常，檢查增壓壓力傳感器的數值，在加速時數值變化小且存在滯后現象。將壓力傳感器拆下檢查無堵塞漏氣現象，使用真空泵改變增壓壓力傳感器真空度，觀察診斷儀的數值變化不明顯，判斷增壓壓力傳感器損壞。
It is found that the 2348-001 fault code still exists by using the diagnostic instrument. Once again, it is detected that the tightness of the charge air system is normal, and the value of the boost pressure sensor is checked. During acceleration, the value changes little and there is hysteresis. Remove the pressure sensor to check that there is no blockage and air leakage. Use the vacuum pump to change the vacuum degree of the boost pressure sensor. Observe that the value of the diagnostic instrument does not change significantly, and judge that the boost pressure sensor is damaged.
故障排除：清洗廢氣再循環調節器Y27/9，更換增壓壓力傳感器，進行發動打吩空制模塊數據匹配，故障排除。
Troubleshooting: clean the exhaust gas recirculation regulator Y27 / 9, replace the boost pressure sensor, match the data of the engine air handling module, and troubleshooting.
故障總結：通過對發動機檢查及根據診斷儀的故障指導，分析柴油發動機廢氣渦輪增壓器的結構和工作原理，逐步排除可能存在故障的部件，將故障徹底排除。
Fault summary: by checking the engine and according to the fault guidance of the diagnostic instrument, analyze the structure and working principle of the diesel engine exhaust turbocharger, gradually eliminate the components that may have faults, and completely eliminate the faults.
