Author Topic: Changfa Radiator - And Alternator  (Read 10187 times)

VeggieDiesel

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Changfa Radiator - And Alternator
« on: February 17, 2008, 05:03:25 AM »
Hi Guys

For anyone interested, I posted some pictues of the Changfa integral radiator/fan cooling system on my website.
There's an interesting twist. When I removed tha radiator cover, I found 3 wires extending from the center of the fan bearing hub. Could this be the low wattage battery charging alternator ?
The alternator which typicaly resides behind the flywheel does not seem to be there.
I put a picture of this on the site also, in the hope that someone could help me identify the wires.

web site: www.logicworks.ca

Cheers,
Veggie

PS: Moderator, please delete the previous message with the bad link. Thanks
« Last Edit: February 18, 2008, 09:50:15 PM by Veggie »

Doug

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Re: Changfa Radiator - (Repaired link)
« Reply #1 on: February 17, 2008, 05:14:00 PM »
I don't see the wires your talking about but it has been documented that there is a simple charging system in some of these engines built into the cooling fan.

 
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dieseldave

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Re: Changfa Radiator - (Repaired link)
« Reply #2 on: February 17, 2008, 06:24:09 PM »

  Probably a smalll permanent magnet alternator(no brushes). Put a voltmeter on it and see what it reads!

  Looks like a great idea,if thats what it is!

Doug

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Re: Changfa Radiator - (Repaired link)
« Reply #3 on: February 17, 2008, 06:54:21 PM »
St heads are a throw back very few new machines of any size are built with slip rings anymore.
Looking for them under fly wheels and in modern AC machines of any kind is sort of like looking for a distributor cap and points in a modern car....
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shipo

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Re: Changfa Radiator - (Repaired link)
« Reply #4 on: February 17, 2008, 10:13:12 PM »
That could be your alternator/fan...see okiezeke WEICHAI 1115

http://listerengine.com/smf/index.php?topic=1932.0
Changfa 195/10k
Changfa 170R

BACKROAD

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Re: Changfa Radiator - (Repaired link)
« Reply #5 on: February 18, 2008, 12:11:00 AM »
Both of my, built in 1980 195's, came with their little radiator and fan.  Neither of them have the alternator/fan combo.  Both of them have the alternator behind the flywheel.  If anyone want's the original radiator's, you're welcome to mine.  Soon to have real ones. :D
Dung-fong #1 - Mfg. Date 1980/8kw Winco gen...In pieces
Dung-fong #2 - Mfg. Date also 1980/8kw Winco gen...runs
      totally awesome after 10+ years of sitting.
1987 Ford F350, crewcab, dually 4X4.....Cummins Powered...
1956 Willy's all-a-round great four wheeler, VERY CUSTOM....

VeggieDiesel

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Re: Changfa Radiator - (Repaired link)
« Reply #6 on: February 18, 2008, 01:56:31 AM »
Doug,

If you go back to the website, look under the "Cooling" section. It's the picture at the bottom of the page.
My hand is holding the three wires which originate at the center hub of the fan.

www.logicworks.ca

Cheers,
Veggie

Doug

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Re: Changfa Radiator - (Repaired link)
« Reply #7 on: February 18, 2008, 03:09:43 AM »
There you have it then yours came with an alternator.

If I recall correctly there is a wiring diagram at Utterpower
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SCOTT

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Re: Changfa Radiator - (Repaired link)
« Reply #8 on: February 18, 2008, 03:20:34 AM »
test it with a multimeter
net metering with a 6/1 in Connecticut
12/1
6/1

Doug

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Re: Changfa Radiator - (Repaired link)
« Reply #9 on: February 18, 2008, 03:27:30 AM »
That won't tell you much without a print.
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VeggieDiesel

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Re: Changfa Radiator - And Alternator
« Reply #10 on: February 18, 2008, 10:12:15 PM »
Re: Mysterious alternator wires

Gentlemen,

I ran the engine and took some voltage readings.
In case it's an alternator (and not a DC magnet dynamo), I used the AC setting on my mutimeter.
I am not well educated on electrical generator circuitry so perhaps someone could shed some light on this.

Engine running at 400 rpm...
3 Wires (2 red, 1 black):
Red-1 wire to common Black wire = 19.2 volts
Red-2 wire to common Black wire = 19.2 volts

Engine running at 1800 rpm...
Red-1 wire to common Black wire = 27 volts
Red-2 wire to common Black wire = 27 volts

How do I make use of this power?
I assume a rectifier and voltage regulator are necessary, but I don't have a clue what components to get.



The three wires I metered are shown coiled to the left of the starter motor. They connect to the rad fan alternator.
Below the starter, at the back of the engine, there is a module which may be a rectifier ? It has 2 green wires and one red wire.
The red one goes to the RUN side of the ignition switch, and the green wires are not connected to anything.
Changfa makes great engines, but their manual makes no reference to electrical of any kind.

Thanks to anyone who can offer some guidance on this.

PS: Finally figured out how to embed a picture. Neat!!

Cheers,
Veggie


shipo

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Re: Changfa Radiator - And Alternator
« Reply #11 on: February 19, 2008, 02:29:46 AM »
Veggie,

I also spend time trying to understand the wiring in 195. I recommend you get the CD from George B. at Utterpower also see the page of one our member here Martin Nile.

  http://martin.nile.googlepages.com/

Thanks to him i found this page..

http://power-co.net/changcharg.htm

Changfa 195/10k
Changfa 170R

Doug

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Re: Changfa Radiator - And Alternator
« Reply #12 on: February 20, 2008, 12:57:50 AM »
Veggie the green wires apear be coming from your charging system regulator.....

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trigzy

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Re: Changfa Radiator - And Alternator
« Reply #13 on: February 20, 2008, 01:36:06 AM »
Ok,
     Now heres another question before I make an educated guess, what is the voltage between the two red wires?? Hopefully 0??  Or is it double the red/black voltage?  What are the resistance (ohm) measurements between the reds/back and the red/red?

If my assumption is correct, you will be able to hook one red wire & the back wire to those green wires on the regulator, but I'd need those measurements to be sure.

Steve
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Vendor of AVR's, Small Clones of Yanmar Diesel and Honda Gasoline Engines

Doug

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Re: Changfa Radiator - And Alternator
« Reply #14 on: February 20, 2008, 03:12:04 AM »
Get the prints from Utterpower, less risk of releasing magic smoke
It's a Good Life, If You Don't Weaken