Environmental Engineering Reference
In-Depth Information
Simultaneous temperature and vibration
Test level
30
20
On transmisson
On engine
5
Cabin/engine
compartment
In cabin
-30
0
25
65
85
115
125
150
Temperature (
°
C)
Figure 4.54 Powertrain package environmental zones
Vehicle body/chassis:
30 °C to
65 °C with vibration
levels of up to 20 g peak over
200 Hz to 1 kHz
Engine:
30 °C to
150 °C with vibration
levels of up to 20 g peak over
200 Hz to 1 kHz
Powertrain:
30 °C to
115 °C with vibration
levels of up to 20 g peak over
200 Hz to 1 kHz
Cabin/trunk:
30 °C to
65 °C with vibration
levels of up to 5 g peak over
200 Hz to 1 kHz
Figure 4.55 Vehicle thermal environment by zone
Modelling and simulation of the powertrain thermal environment along the
centreline of the vehicle is shown in Figure 4.56 for a vehicle under the conditions
listed in Table 4.25.
Table 4.25 Thermal environment conditions
Condition
Unit
Value
Vehicle speed
kph
48
Cooling fan speed
rpm
2,100
Ambient pressure
kPa
101
C
Ambient temperature
43
