Engine: Description and Operation: Description and Operation

Engine Component View
The concept of modularity allows engine designs to share communization between concepts and engine hardware. The four modules are the:
^ intake module
^ cylinder head module (RH)
^ cylinder head module (LH)
^ lower engine module

The modular engine concept supports efficiencies during repairs by allowing the removal and installation of these modules. While not all in-vehicle repairs can take advantage of the modular concept, most out-of-vehicle repairs benefit in reduction of time and labor needed to repair the engine.

The basic engine components consist of:
^ single overhead camshafts
^ two valves per cylinder
^ Sequential Multiport Fuel Injection (SFI)
^ aluminum cylinder heads
^ a cast aluminum, 90-degree V-cylinder block (4.6L engines)
^ a cast iron, 90-degree V-cylinder block (5.4L engines)
^ individual ignition coils for each spark plug
^ a two-piece intake manifold system with an aluminum upper and composite-material lower intake manifold with noise insulator (4.6L engines)
^ a composite-material intake manifold with noise insulator and aluminum cross-over tube (5.4L engines)
^ a large-bore throttle body