08-20-2014, 02:27 PM
|
#11 (permalink)
|
|
EcoModding Lurker
Join Date: Aug 2013
Location: United Kingdom
Posts: 29
Thanks: 32
Thanked 4 Times in 4 Posts
|
In situ
Inside
|
|
|
|
 Today
|
|
|
|
Other popular topics in this forum...
|
|
|
|
|
08-20-2014, 03:52 PM
|
#12 (permalink)
|
|
Administrator
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203
Thanks: 2,501
Thanked 2,586 Times in 1,554 Posts
|
I just want to say, heating the coolant with an electric heater that is powered by your alternator is not going to increase your mileage. If you do this for defrost/heat reasons its valid, but its not going to earn you better fuel economy.
|
|
|
|
|
The Following User Says Thank You to Daox For This Useful Post:
|
|
|
08-20-2014, 04:02 PM
|
#13 (permalink)
|
|
EcoModding Lurker
Join Date: Aug 2013
Location: United Kingdom
Posts: 29
Thanks: 32
Thanked 4 Times in 4 Posts
|
Quote:
Originally Posted by Daox
I just want to say, heating the coolant with an electric heater that is powered by your alternator is not going to increase your mileage. If you do this for defrost/heat reasons its valid, but its not going to earn you better fuel economy.
|
Your more than likely right and I do want the heat as long as it doesn't affect mpg too much.
Last edited by fearone; 08-20-2014 at 04:09 PM..
Reason: typo
|
|
|
|
|
08-20-2014, 04:06 PM
|
#14 (permalink)
|
|
Administrator
Join Date: Dec 2007
Location: Germantown, WI
Posts: 11,203
Thanks: 2,501
Thanked 2,586 Times in 1,554 Posts
|
I completely understand. Last year I installed heated seats for my wife's car.  |
|
|
|
|
08-20-2014, 04:08 PM
|
#15 (permalink)
|
|
EcoModding Lurker
Join Date: Aug 2013
Location: United Kingdom
Posts: 29
Thanks: 32
Thanked 4 Times in 4 Posts
|
Quote:
Originally Posted by oil pan 4
Just make sure your battery and charging system can handle it.
The small wires going to the plug look like they could be a temperature switch.
Something that much power really needs to be ran off a relay or contactor.
|
My alternator is rated 100A and battery 71A 650cca
Im not sure what load alternators can supply for longish periods. |
|
|
|
|
08-20-2014, 04:26 PM
|
#16 (permalink)
|
|
Master EcoModder
Join Date: Sep 2009
Posts: 5,927
Thanks: 877
Thanked 2,024 Times in 1,304 Posts
|
If it heats when you are in a cold start, you are already running at higher RPM and cold enrichment. It could be that additional alternator loads are not that costly mileage wise and the additional load would reduce warm up times as well. While it might not hurt your mileage it should help you have a functioning heater more rapidly and if most of the current drain is during your warm up cycle when most of the fuel is used to heat the engine it might be a wash, but my thinking is it is probably for very cold winter temperatures.
regards
Mech
|
|
|
|
|
08-21-2014, 04:05 AM
|
#17 (permalink)
|
|
It's all about Diesel
Join Date: Oct 2012
Location: Porto Alegre, Rio Grande do Sul, Brazil
Posts: 12,571
Thanks: 0
Thanked 1,627 Times in 1,452 Posts
|
You could still consider that intake heater suggested by oil_pan_4 too.
|
|
|
|
|
08-21-2014, 12:18 PM
|
#18 (permalink)
|
|
Corporate imperialist
Join Date: Jul 2011
Location: NewMexico (USA)
Posts: 11,185
Thanks: 270
Thanked 3,528 Times in 2,802 Posts
|
Quote:
Originally Posted by fearone
My alternator is rated 100A and battery 71A 650cca
Im not sure what load alternators can supply for longish periods.
|
At idle and low RPM the alt might only produce 20 to 40 amps, anything after that will be drained off the battery. The 100 amp alt in my diesel only makes about 20 to 25 amps at idle.
Starting batteries don't like to do anyting besides starting the vehicle and get charged back up. Discharging them as little as 20% can damage them.
__________________
1984 chevy suburban, custom made 6.5L diesel turbocharged with a Garrett T76 and Holset HE351VE, 22:1 compression 13psi of intercooled boost.
1989 firebird mostly stock. Aside from the 6-speed manual trans, corvette gen 5 front brakes, 1LE drive shaft, 4th Gen disc brake fbody rear end.
2011 leaf SL, white, portable 240v CHAdeMO, trailer hitch, new batt as of 2014.
|
|
|
|
|
The Following User Says Thank You to oil pan 4 For This Useful Post:
|
|
|
08-21-2014, 03:16 PM
|
#19 (permalink)
|
|
EcoModding Lurker
Join Date: Aug 2013
Location: United Kingdom
Posts: 29
Thanks: 32
Thanked 4 Times in 4 Posts
|
Quote:
Originally Posted by oil pan 4
At idle and low RPM the alt might only produce 20 to 40 amps, anything after that will be drained off the battery. The 100 amp alt in my diesel only makes about 20 to 25 amps at idle.
Starting batteries don't like to do anyting besides starting the vehicle and get charged back up. Discharging them as little as 20% can damage them.
|
Oh, I think I'll have to ditch the idea then. The cars they are fitted on come with 150A alternators and this is probably why. |
|
|
|
|
08-21-2014, 03:25 PM
|
#20 (permalink)
|
|
EcoModding Lurker
Join Date: Aug 2013
Location: United Kingdom
Posts: 29
Thanks: 32
Thanked 4 Times in 4 Posts
|
Quote:
Originally Posted by cRiPpLe_rOoStEr
You could still consider that intake heater suggested by oil_pan_4 too.
|
It doesn't get too cold here in winter tbh, -5 to 0c not sure what's that in f but its just below freezing and I want heater/demister which is why the air thing's out.
|
|
|
|
|
