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Diesel Turbocharger proper use and maintenanceDiesel engine exhaust gas turbocharger is used way to increase their effective power. Turbocharger to make up for the naturally aspirated engine of some of the deficiencies, so that the work of the engine cylinder volume without changing the case of greatly increased output power, many projects are using this turbo machinery technology to improve engine power output improve the engine's power to weight ratio, the mechanical performance of. 1.Turbocharger composition and function Diesel engine by the fuel in the cylinder combustion for power, input the amount of fuel by the inhalation of the cylinder of air traffic restrictions, the generated power is restricted, if the engine's operating performance has been at its best, and then increase the output power only through the compression more air into the cylinder to increase fuel capacity, increased burning of work ability. In the current technical conditions, the turbocharger are the only way the efficiency of diesel engine under the same mechanical device to increase power output. Turbocharged diesel engine turbocharger is a key component, engine power output increased 20% to 30%, 8% lower fuel consumption and exhaust smoke by 25% to 50%, emission of harmful toxic gases are substantially reduced small. Therefore, the daily use in construction machinery, the importance of the proper use of turbochargers and maintenance to reduce use costs, reduce energy consumption, protecting the environment is important. Turbocharger is actually an air compressor, through the compressed air to increase the gas flow, it is mainly from the turbine and compressor composed of two parts. Turbine room air intake and exhaust manifold connected to the exhaust port connected to the exhaust pipe; compressor air inlet and air filter pipe connected to the exhaust port connected to the intake manifold on; turbine impeller and the compressor impeller, respectively installed in the turbine room and a supercharger, the two coaxial rigid. Turbo diesel engine emissions using inertial momentum to drive a turbine room of the turbine, the turbine has led coaxial impeller, impeller pressure delivery pipe from the air filter air delivered to the supercharger into the cylinder. Faster when the engine speed, exhaust emissions are also sync speed with faster speed turbine impeller to compress more air into the cylinder, air pressure and density increase to burn more fuel, a corresponding increase in diesel fuel and adjust the volume speed, increase engine power output. 2.common failure analysis Turbocharger installed in the engine into the exhaust manifold on at high temperature, high pressure and high-speed operation of the working conditions, the working environment is very poor, job requirements and relatively harsh, prone to failure in use. After the failure of the general performance of diesel engines for the power significantly decreased, black smoke, take too much blue smoke and oil consumption, abnormal turbocharger sound, great noise. The main reason for the poor lubrication failure, foreign material from entering and accumulation of fatigue damage. (1) poor lubrication Means the turbocharger compressor impeller and turbine in the turbine rotor shaft bearing lubrication are not good, as well as damage to the rotor shaft and bearings, supercharger does not work. Poor lubrication mainly by the oil shortage, oil pipeline leaks and oil deterioration and other causes. (2) the entry and accumulation of foreign substances Refers to the intake pipe in the dirt and the exhaust pipe of coke, dust, debris and other accumulation, if the intake pipe air filter replacement for long periods, intake, compressor impeller so long without cleaning it will produce coke, thereby increasing the intake resistance, the same turbines on the turbine, nozzle coking also have adverse consequences. In addition, the intake and exhaust system, joints, leakage will affect the normal operation of the turbocharger.
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