Page 202 - 05. Subyek Teknik Mesin - Automobile Mechanical and Electrical Systems Automotive Technology Vehicle Maintenance and Repair (Vehicle Maintenance Repr Nv2) by Tom Denton

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186 Automobile mechanical and electrical systems

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Figure 2.214 Boost control system: 1, electronic control unit (ECU); 2, boost control pressure
solenoid; 3, intercooler; 4, temperature sensor; 5, boost pressure sensor; 6, boost pressure
control valve; 7, turbocharger; 8, mass air fl ow (MAF) sensor

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Figure 2.215 Air and exhaust fl ow on a turbocharged system with exhaust gas recirculation
(EGR): 1, EGR valve; 2, tube; 3, inlet manifold; 4, exhaust manifold; 5, turbocharger;
6, intercooler; 7, catalytic converter

The turbine and compressor fan wheels are radial fl ow types ( Fig. 2.216 ). The
exhaust fl ows towards the centre and then out. The inlet air fl ows in at the
centre and outwards to the engine air intake duct. The air is forced out by the
rotary centrifugal action of the compressor wheel. Air and gas fl ow is directed