Turbocharger (TC)
WARNING: This page is about a different car, the 2002 Volvo C70, 2001 Volvo C70, 2000 Volvo C70, 1999 Volvo C70, and 1998 Volvo C70. However, it is still accessible from the selected car via links, so may be relevant.
The turbocharger (TC) system is designed to increase engine output. This is achieved by compressing the intake air in the turbocharger (TC). The system senses that more air in entering the cylinder and so injects more fuel. The cylinder is filled with more air and fuel than it could suck in. The pressure that occurs is called turbocharger (TC) boost pressure.
Exhaust gases pass through (1) to the turbocharger (TC) driving the rotor. They then pass out through exhaust pipe (2). Fresh air is sucked in through (3) and pressed through (4) via the charge air cooler (CAC) into the intake manifold.