Quote:
|
Originally Posted by LeaUK
According to MB data the fan will rotate at half engine speed until 90-105degC (air exit temp) which translates to around 85-95degC water temp -due to losses, thermal relief in engine block etc.
You will also note the design is such that it will also disengage at >=4500rpm for efficiency reasons - MB assume that there is plenty of air traveling through the rad at this high rpm and you're not still and simply just reving.
Lea
|
. . different models but my vfc starts to cutin around 100C because that's where the bimetallic switch (bms) bends enough to allow the 'juice' to flow into the proper chamber.
If you look at MENU#21 where I tested the bms, you can see that it around 100C there is enough bending to engage the vfc. So you can see that to get 100C EXIT temp, the engine coolant has to be MORE than 100C, thus the complaint against the vfc operation. "AIR" is the coupling medium that causes the bms to bend. So for the bms to bend enough, the engine temp has risen way over 100C probably 110C+ to get 100C air temp. That's why the vfc mod described in MENU#20.
I tried to get some companies interested in making a lower temp version bms. But after some initial interest, nothing ever came of it. The target was 90 -95 coolant temperature.
The other point is the cut-out point is around 3000-3200 prm. That represents about 85 - 90 mph.
04-22-2005, 11:57 AM
Similar Threads
Threaded Mode
