Page 46 - 6748

The circuit is characterised by long
straights and chicanes. This means the cars'
engines are at full throttle for over 75% of
the lap, a higher percentage than most other
circuits. The track requires heavier-than-
average braking over a given lap, as the
cars repeatedly decelerate at the end of
some of the world’s fastest straights for the
slow chicanes.
The chicanes are lined by rugged kerbs.
Riding over these hard is crucial for fast
laps. The long straights require small wings
for minimum drag. This means lower
downforce, resulting in lower grip on
corners and under braking, and less stability over bumps.
The main high-speed corners Lesmo 1, Lesmo 2 and Parabolica are all right turns.
Parts of the circuit are surrounded by trees, which means leaves can be blown onto the track.

II Assessing and interpreting faults

5a In pairs, discuss a technical problem you’ve
experienced with a device, equipment or vehicle.
Describe the fault, and how you tried to solve the
problem.
b Read the training notes for telephone helpline staff
working for a manufacturer of mining plant. In pairs,
discuss what each point means.
Problem-solving checklist
1 User s observations:
- nature of fault
- circumstances of fault
- external factors
2 Process of elimination
3 Identify the failure
4 Determine action and urgency

6a ►5.3 Mr Rooney, an engineer at a quarry firm, is
talking to Al, a helpline consultant, about a technical problem with a diesel engine. Read
the conversation and answer the following questions.
1 What does the warning message say?
2 What external factor is discussed as a possible cause?
3 Why is this possible cause eliminated?
4 In what circumstances does the fault occur?
5 What does the consultant identify as the most likely cause?
6 What action is required, and how urgent is it?

Al: So what does the warning message say?
Mr Rooney: When you start the engine, it says check injection.
Al: Right.
Mr Rooney: Obviously, it must be some sort of defect in the fuel injection system. The thing is,

44