TIAGO

1.05L REVOTORQ ENGINE 13 Construction And Function:  Turbocharger is comprised of a compressor and a turbine. The turbine and compressor wheels are mounted on a common shaft. This sub-assembly is known as the rotor. The rotor is supported by journals housed in the Central housing.  The exhaust gas driven turbine drives the compressor, which draws in filtered air and delivers it, pre-compressed, to the engine.  The turbocharger turbine consists of the turbine wheel and turbine housing. The engine exhaust gases are directed to the turbine via turbine housing. The energy available in the exhaust gases is converted into kinetic energy by the turbine housing and is used to drive the turbine wheel.  The compressor consists of the compressor wheel and compressor housing. By rotation of the compressor wheel, the air is drawn axially, compressed in the compressor housing and delivered radially at a higher pressure to the intake manifold. Increase in pressure also results in increase in temperature. To reduce the compressed air temperature, most of the turbocharged engines use after cooler / inter cooler.  Westgate is a unit, which allows the use of a smaller turbocharger to reduce lag while preventing it from spinning too quickly at high engine speeds. The wastegate is a valve that allows the exhaust to bypass the turbine blades. The wastegate senses the boost pressure. If the pressure gets too high, it could be an indicator that the turbine is spinning too quickly, so the wastegate bypasses some of the exhaust around the turbine blades, allowing the blades to slow down  The boost pressure acts on the actuator diaphragm, which is pre-stressed by a coil spring. Once the boost pressure has overcome the spring pre-load, the diaphragm pushes the actuator control rod, which in-turn operates the flap (by-pass valve), thus allowing to set the boost pressure as required . Operation And Preventive Maintenance: Good maintenance practices should be observed, particularly regarding oil quality and its filtration and air filtration. These areas are important because of turbocharger's speed and operating conditions. Proper operating procedures and preventive maintenance practices give good turbocharger service life and performance. Years of experience has shown that the largest percentage of turbocharger failures are caused by lubrication problems such as oil lag, restriction or lack of oil flow and foreign material in the oil. The second largest percentage is caused by foreign objects entering the compressor / turbine wheels The engine manufacturer's recommendations for operation and maintenance shall be authoritative for the operation of turbocharged engines. Special attention should be paid to: Following operating Recommendations  The engine should not be put under full load immediately after start. We recommend the engine to be run at idling speed for a short time (One minute). Warm up the engine under medium speed and load.  Revving the engine immediately after start can force the turbocharger to operate at very high speed with inadequate lubricating oil. A turbocharger running with inadequate lubrication will undergo higher bearing wear. Repeated occurrences will lead to premature turbocharger failure.  Turbocharger operating temperatures and speeds should be reduced before switching-off the engine Turbocharger operates at speeds and continuous temperatures that are much higher than most other machines. When an engine is run at maximum power / torque, turbocharger speed and temperature are also at maximum. Problems can be caused for engine more so for turbocharger, when the engine is shut off suddenly. This may require operating the engine at no load condition and at medium idle, while still maintaining full engine oil pressure and airflow for effective cooling.  The turbocharger needs to be pre-oiled after an oil change or any service that involves oil draining. Whenever the vehicle has not been used for a long period, or operated at low ambient temperatures. Crank the engine a few times before allowing it to start. Then start the