Carburetor Air/Fuel Ratio - Check/Adjust
如果空燃比对使用的燃气和运行工况来说不适当,发动机可能会出现故障。 涡轮增压器、气门和其他部件的使用寿命可能缩短。
务必正确调整汽化器,以使空燃比正确。 必须使用排放分析仪,以测量废气排放量。 必须使用能单独测量 NO 和 NO2 的排放分析仪,以检查空燃比。 在发动机的 NOx 排放水平合适时,用于发动机标定的排放分析仪必须准确,误差不得超过标准的 10%。 标定排放分析仪的 NO 和 NO2 的测量精度,以便保持这种准确的测量水平。 如果发动机正时或废气旁通阀有任何变化,则必须检查空燃比。 必须用排放分析仪对空燃比加以调整。
为保持合适的排放水平,重新校准 O2 传感器。
有关调整汽化器的信息,请参考系统操作/测试和调整, "汽化器(高燃气压力)- 调整",或请参考专门说明书, "安装和初始起动步骤"。
Caterpillar Information System:
C3.4B Industrial Engine Diesel Particulate Filter - Clean
C27 and C32 Generator Set Engines Cylinder Head Valves
3500B Engines for Caterpillar Built Power Modules Vibration Damper Guard
3500 Engines Flywheel Housing Cover
C32 Marine Engines Engine Oil Pan
C27 and C32 Engines for Caterpillar Built Machines Camshaft
3412 Generator Set Engines Water Pump
Cat Water Delivery System (WDS) Capacities (Refill)
Cat Water Delivery System (WDS) Lubricant Viscosities - Fluids Recommendations
Cat Water Delivery System (WDS) Hydraulic System Oil Sample - Obtain
Cat Water Delivery System (WDS) Hydraulic Oil Filter - Replace
CG137-08 and CG137-12 Engines Coolant Sample (Level 1) - Obtain
3516C IMO III Petroleum Engines Engine Oil Cooler - Install
Cat Water Delivery System (WDS) Service Ports
797F and 797F XQ Off-Highway Trucks Machine Systems Upper and Lower Link (Suspension) - Remove
797F and 797F XQ Off-Highway Trucks Machine Systems Upper and Lower Link (Suspension) - Install
3500B and 3500C Marine Engines Vibration Damper Guard
C13, C15, and C18 Tier 4 Final Engines Speed/Timing Sensor
C175-16 Petroleum Engines Engine Oil Pan
C27 and C32 Tier 4 Final Marine Engines Cylinder Head
3500 Engines Stub Shaft (Front)
G3500 Engines Vibration Damper
C175-16 Engine for Off-Highway Truck/Tractors Engine Oil Pump
C32 Marine Engines Cylinder Head