Author Topic: 600 watt electric water pump.....  (Read 2208 times)

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machoneman

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600 watt electric water pump.....
« on: November 22, 2018, 10:10:56 AM »
"Things like a 600-Watt electric water pump, whose output is—unlike a conventional pulley-driven pump—not directly tied to engine speed, but instead can vary flow based on cabin warmup and engine cooling/warming needs."

It's on the new turbo'ed I-4 Chevy (sorry!) Silverado engine. Interesting idea as we've covered here the hp loss from pumping losses by way of engine accessories.  Electric power steering too?
« Last Edit: November 22, 2018, 11:37:46 AM by machoneman »
Bob Maag

shady

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Re: 600 watt electric water pump.....
« Reply #1 on: November 22, 2018, 10:47:09 AM »
That's great. Now we have one more thing that runs from a data bus line. So the blend door on the heater plenum goes bad and the truck engine overheats because the cabin is too cold.
What goes fast doesn't go fast long'
What goes fast takes your money with it.
So I'm slow & broke, what went wrong?
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BattlestarGalactic

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Re: 600 watt electric water pump.....
« Reply #2 on: November 25, 2018, 08:36:27 AM »
As long as the power needed to run these electric accessories doesn't put more pull on the alternator.  That would be redundant and not help at all.  600/12v=50 amps.   That is still 50 amps of needed power that has to come from somewhere.
Larry

jayb

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Re: 600 watt electric water pump.....
« Reply #3 on: November 26, 2018, 04:23:44 PM »
If that 600 watts is correct that is a HUGE electric water pump.  The CVR pumps I use pull about 7 amps, making them a little less than 100 watts.  Keeps the engine plenty cool, too.

I wonder if they have gone to a higher voltage electrical system?  There was talk in the industry a while back about moving to a 48V system.  That would make a 600 watt pump a little more believable at 12.5 amps.

By the way, both watts and horsepower are measures of power, and can be compared.  1HP is the same as 750 watts.  So that 600 watt pump they are talking about is equivalent to less than 1 HP.  Even considering the inefficiency of the alternator, that is a big power savings compared to a mechanical water pump, which can consume well over 10 HP at high engine speeds.
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

BattlestarGalactic

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Re: 600 watt electric water pump.....
« Reply #4 on: November 27, 2018, 08:45:31 AM »
Good point Jay about power draw.  That 50 amps just sounds crazy large for a pump.

If they went to 48v, would that mean 4 batteries?  Or would then redesign them for more plates?   I can imagine the fuss when someone would have to pay $500+ for four new batteries. 
Larry

jayb

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Re: 600 watt electric water pump.....
« Reply #5 on: November 27, 2018, 10:13:06 PM »
They were talking about new battery technology, so it would have been a single, 48V battery.  Probably still stupid expensive...
Jay Brown
- 1969 Mach 1, Drag Week 2005 Winner NA/BB, 511" FE (10.60s @ 129); Drag Week 2007 Runner-Up PA/BB, 490" Supercharged FE (9.35 @ 151)
- 1964 Ford Galaxie, Drag Week 2009 Winner Modified NA (9.50s @ 143), 585" SOHC
- 1969 Shelby Clone, Drag Week 2015 Winner Modified NA (Average 8.98 @ 149), 585" SOHC

   

RustyCrankshaft

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Re: 600 watt electric water pump.....
« Reply #6 on: November 29, 2018, 07:23:28 PM »
Good point Jay about power draw.  That 50 amps just sounds crazy large for a pump.

If they went to 48v, would that mean 4 batteries?  Or would then redesign them for more plates?   I can imagine the fuss when someone would have to pay $500+ for four new batteries.

500 per battery? I wish. We pay around 30k dollars per battery at work and rebuild them in house, new they've over 50k! Slightly higher voltage, but still.

BattlestarGalactic

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Re: 600 watt electric water pump.....
« Reply #7 on: November 30, 2018, 08:48:26 AM »
I'm just thinking four typical $120 std group 27 car batteries to get 48v.  Not a specialty type battery.   I've heard horror stories of the cost of the battery for like a Prius or any other electric car.
Larry