MAHA LPS 3000, Operating Instructions Manual, Page: 43 / 115

BA052301-en
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Example 2 P
2
Heat flow surface engnine block 0,8 x 100 = 80 kW
P
3
Coolant heat flow 0,7 x 100 = 70 kW
P
4
Heat flow vehicle exhaust system 0,5 x 100 = 50 kW
Heat burden on the room = 200 kW
•
Time period
An LPS 3000 performance test takes, on the average:
CAR 1.5 minutes
TRUCK 3 – 4 minutes
A short working break follows (vehicle change, set up work, etc.)
•
Ventilation concept criteria
The following points must be considered for the ventilation concept:
- Engine power
- Frequency of measurements
- Room temperature increase allowed by operator
- Room size
- Energy storage volume of the walls
MAHA Experiences
Cooling air is of special importance as modern engine management systems are equipped with
control systems which reduce the engine power when intake temperatures are too high. The full
engine power is however to be measured on the dyno.
Do not fall below the following values when testing vehicles under full load:
- Air power > 25 000m³/h
- Flow speed > 90 km/h
- Securing of under body flow (catalytic converter)