[ausev] Honda's Electric A/C Compressor
Dan Petit
dan-petit at att.net
Tue Feb 10 19:03:45 GMT 2009
From Dan Petit
Honda's electric AC compressor has two modes for which the PCM
controls both.
A 70 cc scroll is electrically-driven and serves to "maintain" a cooled
interior, while the
mechanical side of the compressor is driven by belt to more quickly
purge initial high inerior heat.
There may be an interesting possibility with the use of a used one
from a wrecking yard to possibly run the mechanical side off of an
unused side of your traction motor to possibly recover energy from
slowing down (a relay off of the brake light switch), then, a program to
engage the 70cc electric side to maintain cooling.
Although it was several years ago when I found out that the going price
for a good used one was about $400, this presents a really interesting
set of really fun possibilities.
What is the displacement of the Magnaflux in the Saturn?
(I was preoccupied with the charge calibration procedure to ask that.)
Dan.
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> Today's Topics:
>
> 1. Progress so far on 91 MR2 conversion, and a question
> (William Gooch)
> 2. General Meeting this Saturday (2/14) 2:00 pm -4:30pm --
> Terrazas Branch (Aaron Choate)
> 3. Re: Progress so far on 91 MR2 conversion, and a question
> (Brian Lasseter)
> 4. Re: Progress so far on 91 MR2 conversion, and a question
> (John Flores-McLaughlin)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 09 Feb 2009 07:49:54 -0600
> From: William Gooch <goochb at alum.mit.edu>
> Subject: [ausev] Progress so far on 91 MR2 conversion, and a question
> To: ausev at austinev.org
> Message-ID: <49903482.3090706 at alum.mit.edu>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Here are some photos from last month:
> http://img301.imageshack.us/img301/4876/p1020416yo6.jpg
> http://img26.imageshack.us/img26/86...70250598ip7.jpg
> <http://img26.imageshack.us/img26/8659/p10204170250598ip7.jpg>
>
> And yesterday:
> http://img13.imageshack.us/img13/50...10684240lh6.jpg
> <http://img13.imageshack.us/img13/5070/p10204810684240lh6.jpg>
> http://img5.imageshack.us/img5/4528...90758708aq1.jpg
> <http://img5.imageshack.us/img5/4528/p10204790758708aq1.jpg>
>
> The new 9" ADC motor:
> http://img12.imageshack.us/img12/39...40625004bj4.jpg
> <http://img12.imageshack.us/img12/3962/p10204740625004bj4.jpg>
>
> The question I have is whether anyone can recommend a good choice for a
> small 12V DC motor to drive the AC compressor. What RPM range is good
> to use for that, etc? I'm thinking of directly coupling that motor
> shaft to the compressor shaft, and may locate both in the small cargo
> area up front, to shorten the AC coolant lines (the heat exchanger is
> right in the front of the car). Thanks!
>
> Do we have a meeting place set for this month yet (maybe I missed it)?
>
> Bill
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> ------------------------------
>
> Message: 2
> Date: Mon, 9 Feb 2009 12:42:53 -0600
> From: Aaron Choate <achoate at gmail.com>
> Subject: [ausev] General Meeting this Saturday (2/14) 2:00 pm -4:30pm
> -- Terrazas Branch
> To: AustinEV News Announcements and General Discussion
> <ausev at austinev.org>
> Message-ID:
> <8fa91bfa0902091042s5c96280fvdefc098aa1cba34 at mail.gmail.com>
> Content-Type: text/plain; charset="utf-8"
>
> All,
> Sorry for not sending out this in email. The next meeting is scheduled for
> Saturday 2/14 - 2:00-4:30pm at the Terrazas Branch of the Austin Public
> Library.
>
> http://www.austinlibrary.com/library/branches/index.cfm?action=terrazas
>
> I will send an email in a bit once we have everything finalized with the
> agenda, but we are sure we have a Tesla coming for a show and tell. Willie
> is also interested in showing his car and I will confirm with him on
> charging and the timing.
>
> Cheers,
>
> Aaron Choate
> -------------- next part --------------
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>
> ------------------------------
>
> Message: 3
> Date: Mon, 9 Feb 2009 15:18:40 -0600
> From: Brian Lasseter <blasseter.cmpe01 at gtalumni.org>
> Subject: Re: [ausev] Progress so far on 91 MR2 conversion, and a
> question
> To: AustinEV News Announcements and General Discussion
> <ausev at austinev.org>
> Message-ID: <2b3d5a440902091318m6c6450n42b3c0e8cf3dc23 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> A "small 12VDC" motor will never drive your A/C compressor. Aaron
> Choate, Mark Farver, and Chris Robison could give you more
> information, but we basically tried to hook up a 3HP 144VDC motor to
> my A/C compressor, and it burned out the motor (after working for a
> few minutes).
>
> Mark Farver also tried a smaller high voltage DC motor on his MR2 A/C
> compressor to disappointing results. You would need at least a 3HP
> high voltage motor to make it work.
>
> I ended up buying a Masterflux high voltage DC compressor
> http://www.masterflux.com/products/sierra/ The Masterflux compressor
> is reliable, and works great. I've had mine for 6 months or so now.
> They are a bit pricey though since they are essentially selling a
> tuned scroll compressor, a high voltage three phase electric motor,
> and a high voltage motor controller together in a kit.
>
> If you email Aaron Choate... he's a distributor for Masterflux and can
> quote you recent prices. (Or you could talk to him at the AustinEV
> meeting.)
>
>
> TTFN,
> Brian "Lasso" Lasseter
>
> "No Sane man will dance." -Cicero (106-43 B.C.)
>
>
>
> On Mon, Feb 9, 2009 at 7:49 AM, William Gooch <goochb at alum.mit.edu> wrote:
>
>> The question I have is whether anyone can recommend a good choice for a
>> small 12V DC motor to drive the AC compressor. What RPM range is good to
>> use for that, etc? I'm thinking of directly coupling that motor shaft to
>> the compressor shaft, and may locate both in the small cargo area up front,
>> to shorten the AC coolant lines (the heat exchanger is right in the front of
>> the car). Thanks!
>>
>
>
> ------------------------------
>
> Message: 4
> Date: Mon, 9 Feb 2009 16:41:16 -0600
> From: John Flores-McLaughlin <johnfm101 at gmail.com>
> Subject: Re: [ausev] Progress so far on 91 MR2 conversion, and a
> question
> To: AustinEV News Announcements and General Discussion
> <ausev at austinev.org>
> Message-ID:
> <5fb85f910902091441n4f1e6a79na3e24f7d00814806 at mail.gmail.com>
> Content-Type: text/plain; charset=ISO-8859-1
>
> Did you ever figure out why your motor blew?
>
> On Mon, Feb 9, 2009 at 3:18 PM, Brian Lasseter
> <blasseter.cmpe01 at gtalumni.org> wrote:
>
>> A "small 12VDC" motor will never drive your A/C compressor. Aaron
>> Choate, Mark Farver, and Chris Robison could give you more
>> information, but we basically tried to hook up a 3HP 144VDC motor to
>> my A/C compressor, and it burned out the motor (after working for a
>> few minutes).
>>
>> Mark Farver also tried a smaller high voltage DC motor on his MR2 A/C
>> compressor to disappointing results. You would need at least a 3HP
>> high voltage motor to make it work.
>>
>> I ended up buying a Masterflux high voltage DC compressor
>> http://www.masterflux.com/products/sierra/ The Masterflux compressor
>> is reliable, and works great. I've had mine for 6 months or so now.
>> They are a bit pricey though since they are essentially selling a
>> tuned scroll compressor, a high voltage three phase electric motor,
>> and a high voltage motor controller together in a kit.
>>
>> If you email Aaron Choate... he's a distributor for Masterflux and can
>> quote you recent prices. (Or you could talk to him at the AustinEV
>> meeting.)
>>
>>
>> TTFN,
>> Brian "Lasso" Lasseter
>>
>> "No Sane man will dance." -Cicero (106-43 B.C.)
>>
>>
>>
>> On Mon, Feb 9, 2009 at 7:49 AM, William Gooch <goochb at alum.mit.edu> wrote:
>>
>>> The question I have is whether anyone can recommend a good choice for a
>>> small 12V DC motor to drive the AC compressor. What RPM range is good to
>>> use for that, etc? I'm thinking of directly coupling that motor shaft to
>>> the compressor shaft, and may locate both in the small cargo area up front,
>>> to shorten the AC coolant lines (the heat exchanger is right in the front of
>>> the car). Thanks!
>>>
>> _______________________________________________
>> AusEV mailing list
>> AusEV at austinev.org
>> http://www.austinev.org/mailman/listinfo/ausev
>>
>>
>
>
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> End of AusEV Digest, Vol 37, Issue 8
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