🔍 Key Concepts

• Location of exhaust flow from the cylinder and where it first goes after leaving the exhaust valves • Difference between a manifold (a collecting pipe) and a turbine (a rotating wheel driven by gas flow) • Where the aftercooler is normally installed in relation to the turbocharger on a diesel engine air system diagram

💭 Think About

• Trace the path of the exhaust gases from the cylinder in Fig. 4 and see what component they strike first that can do work. • Look at the shape of the item labeled "T": does it look like a simple pipe/box that collects gas, or a housing for a rotating wheel? • Compare Fig. 4 with the other figures: which labeled parts show the air intake side and which show the exhaust side of the turbocharger assembly?

✅ Before You Answer

• Verify whether "T" is on the exhaust side or intake/air side of the engine. • Confirm if the part labeled "T" merely collects exhaust from multiple cylinders (manifold) or if it is a power‑absorbing/power‑producing rotating device (turbine). • Make sure the aftercooler is identified by its usual position downstream of the compressor and upstream of the intake manifold, not in the hot exhaust stream.