6 Section 1 Introduction to Automotive Technology
Engine
compartment
Roof frame
Bumper
support
Door
opening
Collapsible
front frame rail
Rocker
panel
Floorpan
A
Front
suspension
Engine
Transaxle
Catalytic
converter
Fuel
tank
Transaxle
shift lever
Front crossmember
Rear steel
crossmember
B
Muffler
Tailpipe
Rear
brake
disc
Figure 1-4. Unibody vehicles do not have a separate frame. Steel or aluminum panels are normally welded together at the factory
to produce a unibody vehicle. A—Unibody with the chassis removed. B—Chassis components attach directly to the sheet metal
body structure through large steel crossmembers. (Mazda, Saab)