Quote:
Originally Posted by awolfinsheepsclothes
Very interesting Goran you could send the water from your webasto through a heat exchanger bonded to the sump, it would take a while to transfer the heat to the oil. Where are you going Siberia? Pumping oil would be a big strain on a battery around 10amps. Are you after a quicker warm up for economy or engine wear? Have you seen the accusump? This stores pressurised oil so you can have full oil pressure before the starter motor even turns.
Cheers dave
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I got a bit interested reading about oil, and found out that viscosity at 40C is 72 (for Edge 5w30) but at 10C its around 400! and at operating temp. its supposed to be around 12 to 14.
I was a bit deceived by the Webasto heater, after 20mins the coolant is already up to 50C, and after just 5 mins of driving its at 90. But then I started logging the oil temp and it takes a good 15 minutes for it to get up to operating temp. Unfortunately once a week I go to the local supermarket which is only 2 miles away. Now I know the oil never gets up to temperature on that short journey. Call me crazy (because I am
) I have started doing a warm up drive of a few miles down the A2 before I park at the supermarket so at least the oil got up to temperature for a short while.
So I got the wolverine heater in the hope to bring oil up to temperature quicker when I have to do short journeys.
I like the coolant pipe idea, something like a pipe in a kettle or warm water boiler?
Quote:
Originally Posted by ainarssems
There is no oil flow while engine is off so heat is not being transferred to oil through OEM heatexchanger when auxiliary heater is working. Fitting electric pump to push oil through engine and OEM heatexchanger would be tricky and would require powerful pump drawing a lot of current. I was thinking of lower powered electrical pump just sucking up oil from sump, pump it through external heatexchanger and dump back in in the sump.
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Good point about pressure needed to pump through the whole system.
I have some rc airplane lipo batteries which will easily hold 12V if the current is only 10A, so I will give the wolverine pad one more chance to see if it can do anything when it produces its stater 125W rather than the 36V I managed at the last attempt. The additional oil cooler and pump sounds like a lot of extra work and I dont know if I trust myself to not introduce leaks in the oil system.