TRADE OF VEHICLE BODY REPAIR - eCollege

Module 3– Unit 4
This replica is then evaluated by the styling management and
submitted to top management for their approval. The accurate lifesize
model is used for further wind tunnel testing and also to
provide measurements for the
engineering and production
departments. A scanner, linked
to a computer, passes over the
entire body and records each
and every dimension. These are
stored and can be produced on
an automatic drafting machine.
Figure 13: Full-size Clay Model
The same dimensions can also be projected on the screen of a
graphic station; this is a sophisticated computer-controlled video
system showing three-dimensional illustrations, allowing design
engineers either to smooth the lines or to make detail alterations.
The use of computer or CAD allows more flexibility and saves a lot
of time compared with more conventional drafting systems.
At the same time as the exterior model is being made, the interior
model is also being produced accurately in every detail. It shows the
seating arrangement,
instrumentation, steering
wheel, control unit
location and pedal
arrangements. Colours and
fabrics are tired out on this
mock-up until the interior
styling is complete and
ready for approval.
Figure 14: Checking Dimensional Accuracy of Full-size Model
Engineering Performance and Testing
Development engineers prepare to test an engine in a computerlinked
test cell to establish the optimum settings for the best
performance, economy and emission levels. With the increasing
emphasis on performance with economy, computers are used to
obtain the best possible compromise. They are also used to monitor
and control prolonged engine testing to establish reliability
characteristics. If current engines and transmissions are to be used
for a new model, a programme of refining and adapting for the new
installation has to be initiated. However, if a completely new engine,
Vehicle Body Repairs - Phase 2 29