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Dave T
Member Since: 03 Jul 2009
Location: Glasgow
Posts: 6902
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I've been looking with interest at the adverts in Land Rover Owner International recently and one that keeps appearing which offers a fuel saving is the Kenlowe Electric fan. Reading the advert print it looks like it would make sense, warms up quicker and you aren't driving a viscous coupled fan.
Has anyone fitted one of these and if so does it make any difference? Joined the BMWX5 45e group
1994 Defender 90
2015 RRS Corris Grey/Black roof
2016 D4 Graphite Santorini Black
2012 D4 XS Orkney Grey
2005 D3 S Maya Gold
Convoy for Heroes 2011
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 19th Jul 2010 8:59 pm |
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DiscoDunc
Member Since: 08 May 2006
Location: Bristol
Posts: 16390
 
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I dont think it will make any difference on the D3 as its electronically controlled anyway. Had kenlowes on my V8 defender and they were great Duncan
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If I'd known I was going to be so thirsty this morning I'd have drunk more beer last night.
FFRR Autobiography 4.4 SDV8 MY17
D4 HSE MY13 SOLD
FFRR 3.6 Vogue TDV8 SOLD
D4 HSE MY10 SOLD
D4 SE TECH MY15 SOLD
D4 XS MY12 SOLD
D4 HSE MY10 SOLD
D3 HSE MY06 - Re-Cycled Worldwide
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| 19th Jul 2010 9:04 pm |
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anglefire
Member Since: 09 Mar 2010
Location: In the Club House
Posts: 4180
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On a properly working fan, once the oil in a viscous fan has flung out, the fan can be stopped with a rolled up newspaper (Don't try it with your hand!)
The power draw is insignificant in this state, but will draw more power as the temperature rises and it actually starts to pull the air through the radiator.
I'm pretty sure the Kenlows are thermostatically operated, so will be on or off. Therefore the cooling temperature will be a lot more erratic and in theory at least, make the car less efficient overall.
TBH, the claims made by Kenlowe and the like, just don't stack up IMHO! Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
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Disco Picture Website Here
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| 19th Jul 2010 9:10 pm |
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grzesiul
Member Since: 11 May 2008
Location: UK
Posts: 6268
 
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I have spoken to people at Kenlowe but no go they said never tested them on D3 and do not have a clue how to bypass D3 systems controlling viscous fan anyway
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| 19th Jul 2010 9:35 pm |
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ronald.soak
Member Since: 29 Apr 2008
Location: London
Posts: 516
 
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What is the point of electronically controlling a viscous fan?.
Surely the whole point of using a viscous coupling is that it is temperature responsive and self regulating.
I used a Kenlowe on a classic Range Rover and soon discovered how they could be guarenteed for life, they almost never needed to switch on. On one regular trip the fan would always cut in at the second set of traffic lights after over 40 miles of M1 driving.
The D3 is probably not excessively over cooled like the classic RR and given the better fuel economy of the Disco, I suspect that it would take a long time to recover the cost of a Kenlowe. You would however be spared the disco howl at startup in cold weather. (which is not a fuel efficient time to operate the fan at full chat)
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| 20th Jul 2010 5:23 pm |
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DiscoDunc
Member Since: 08 May 2006
Location: Bristol
Posts: 16390
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Quote:What is the point of electronically controlling a viscous fan?.
this might help
Quote:"For additional airflow through the radiator matrix, particularly when the vehicle is stationary, there is an engine driven electro-viscous fan unit fitted to the rear of the radiator. The fan is used for engine cooling and for Air Conditioning (A/C) system cooling. This unit functions as a normal viscous fan, but with electronic control over the level engagement of the clutch. The Engine Control Module (ECM), which determines the required fan speed, controls the level of clutch engagement. The ECM determines engagement based on the coolant, charge air, ambient and transmission oil temperatures and the A/C pressure. The fan is mounted using a left hand thread.
The viscous fan unit is electronically controlled by the ECM to optimise fan speed for all operating conditions."
Duncan
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If I'd known I was going to be so thirsty this morning I'd have drunk more beer last night.
FFRR Autobiography 4.4 SDV8 MY17
D4 HSE MY13 SOLD
FFRR 3.6 Vogue TDV8 SOLD
D4 HSE MY10 SOLD
D4 SE TECH MY15 SOLD
D4 XS MY12 SOLD
D4 HSE MY10 SOLD
D3 HSE MY06 - Re-Cycled Worldwide
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| 20th Jul 2010 5:30 pm |
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ronald.soak
Member Since: 29 Apr 2008
Location: London
Posts: 516
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Thanks Duncan.
The KISS principle is obviously dead at Solihull.
LR struggled to sort the classic RR cooling sufficiently to enter the US market and engine cooling still does not seem to be a company strong point. All that complexity, (which smells of a desperate bodge) and processing and it still howls like a banshee in the cold.
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| 20th Jul 2010 6:02 pm |
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anglefire
Member Since: 09 Mar 2010
Location: In the Club House
Posts: 4180
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The howl is simply the noise the fan makes until the oil has been flung out.
Being electric as well is just an efficient way of ensuring the AC works (You need to shift the heat for the AC to work properly) when stationary. Mark.
2006, D3 SE Auto - gone but not forgotten.
2014 BMW 530d M Sport Tourer.
1977 Triumph Spitfire 1500
_________________________________________________
Disco Picture Website Here
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| 20th Jul 2010 9:50 pm |
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Trackman
Member Since: 16 Apr 2010
Location: Glasgow
Posts: 430
 
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I spoke to Kenlowe about changing the fan on the Disco to electric, here is their reply.....
"The TDVC engine is a rare example where the viscous unit should not be removed and replaced with an electric fan. This is because sensors are connected to the unit and are in turn connected to the vehicles ECU system with regard to fuel and air mixture."
Regards,
Ian.
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| 21st Jul 2010 12:19 am |
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