X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from mail-ey0-f180.google.com ([209.85.215.180] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTP id 4486284 for flyrotary@lancaironline.net; Wed, 29 Sep 2010 13:58:14 -0400 Received-SPF: pass receiver=logan.com; client-ip=209.85.215.180; envelope-from=msteitle@gmail.com Received: by eya25 with SMTP id 25so431385eya.25 for ; Wed, 29 Sep 2010 10:57:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:mime-version:received:received:in-reply-to :references:date:message-id:subject:from:to:content-type; bh=sS9XnF5wuIj/SA/e5SDkVWln3bTb5AGhzZc9Hx00Avo=; b=ekG4lJ+m/0WRyY55vl2LPubMW9HC/ngMfG7kuFx3AZnsEvjjnFIsQnFhqsfQLrHtok ApXcCZC8sRRqstWv2/V2xoEtos0pRdpuyEMvMYYtiQ+gAklKZiAkUb/gG13X80Leay4s Uciy+vw6QLacJiyHlvkpjrRF9yrU5lz0x6ssE= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; b=IPmW0H7Z1FwOags13FvdfQlYlvn/KRkUpvWMejk1oUUpvcTfbveHG2iQaZc83+oSEG dF1zhf7ESwZxd2KANcDkgMCcCwuP7b3u70oh907pFavTo0EVRrPV3pVJZi3LxE4hY9gf W/kDtsz/QFDNzE5so/Gnj23kMtY1fxNzQrTz0= MIME-Version: 1.0 Received: by 10.213.112.205 with SMTP id x13mr1844192ebp.16.1285783057211; Wed, 29 Sep 2010 10:57:37 -0700 (PDT) Received: by 10.213.14.67 with HTTP; Wed, 29 Sep 2010 10:57:37 -0700 (PDT) In-Reply-To: References: Date: Wed, 29 Sep 2010 12:57:37 -0500 Message-ID: Subject: Re: [FlyRotary] Re: Auto tune/oxygen sensor From: Mark Steitle To: Rotary motors in aircraft Content-Type: multipart/alternative; boundary=0015174bee70622037049169b20f --0015174bee70622037049169b20f Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: quoted-printable Al, What does it use for auto-tune? Mark S. On Wed, Sep 29, 2010 at 1:42 PM, Al Gietzen wrote: > Bill; > > > > The EC is not a closed loop system =96 does not use the O2 sensor output = =96 > unless something has changed recently. > > > > Al > > > > -----Original Message----- > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Bill Bradburry > *Sent:* Wednesday, September 29, 2010 8:53 AM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: Auto tune/oxygen sensor > > > > Bosch 11027 is the O2 sensor that Tracy recommends in the instructions. = I > think the controller uses that input to maintain the mixture where you se= t > it. I don=92t think it is only used for setting the map table. YMMV > > > > Bill B > > > ------------------------------ > > *From:* Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] *O= n > Behalf Of *Al Gietzen > *Sent:* Wednesday, September 29, 2010 12:07 PM > *To:* Rotary motors in aircraft > *Subject:* [FlyRotary] Re: Auto tune/oxygen sensor > > > > > > I have the BOSCH sensor 11027 and it works fine. > > That=92s what I have also; and I think mine has something close to 150 hr= s > and still going fine. I seldom burn avgas, so that helps. > > I think one needs the O2 sensor for auto tune. > > Yes, it does. As I understand it; with the knobs centered the EM tunes t= o > mid-range on the O2 sensor; roughly stoichometric. > > > > Al > > > > > > Rino > > ----- Original Message ----- > > *From:* Ed Anderson > > *To:* Rotary motors in aircraft > > *Sent:* Wednesday, September 29, 2010 11:05 AM > > *Subject:* [FlyRotary] Re: Auto tune/oxygen sensor > > > > Bill, if it=92s a one wire sensor, then just about any of the "universal"= 1 > wire O2 sensors you find in your auto store will work. > > > > If multiwire (I.e. has a heater element and a separate sensor ground > wire), then you need to get one with the same number of wires. If you ge= t > the same make O2 sensor, then the wires should be the same color. > > > > Bosch has a wire chart which tells you which color wire is which - thi= s > may help. I always get a Bosch unit - they might cost a few bucks more, = but > they are generally good quality, available anywhere and you can find the > wire color code. Here's the wiring color code for the "Universal" Bosch > unit. > > > > Cable colour allocations for the Universal Oxygen Sensor are as follows, > > sensor output signal wire =3D black, sensor heater element cables =3D > > White ( Note - heater is not polarity sensitive ) Sensor signal ground > > ( where used ) =3D Grey > > Important: The cable allocations must be assigned correctly. Otherwise > > the Sensor could be destroyed > > > > Don't let them sell you a wide band O2 sensor which a novice parts guy > might try to do because they all have 5 -6 wires and might get confused w= ith > a Narrow band O2 sensor with a heater. > > > > Ed > > > > *From:* Bill Schertz > > *Sent:* Wednesday, September 29, 2010 9:10 AM > > *To:* Rotary motors in aircraft > > *Subject:* [FlyRotary] Auto tune/oxygen sensor > > > > Was going to do some auto tune in the air yesterday, to get to some regio= ns > of the performance map that can't be reached on the ground. > > > > Took off and the O2 sensor indication completely disappeared from the EM-= 2 > display. Did one circuit of the airport and landed. > > > > Discovered that the O2 sensor had failed (physically -- the top fell off > and separated from the body). This caused me to raise the following > questions. > > > > 1. I believe that the oxygen sensor readout is only that, not used by the > EC-2 for control purposes. > > 2. When in auto tune, is the EM-2 looking at the sensor for indications o= f > which way to adjust the mixture? If not, what is the feedback mechanism? > > > > I went to the Auto parts store for a replacement, and ran into the proble= m > that there are 100's of different oxygen sensors, and they need to know w= hat > car it came from. Anyone have the specs on what this sensor is? > > > > > > Bill Schertz > KIS Cruiser #4045 > N343BS > Phase I testing > > --0015174bee70622037049169b20f Content-Type: text/html; charset=windows-1252 Content-Transfer-Encoding: quoted-printable
Al,
=A0
What does it use for auto-tune?
=A0
Mark S.

On Wed, Sep 29, 2010 at 1:42 PM, Al Gietzen <ALVentures@cox.net<= /a>> wrote:

Bill;

=A0<= /font>

The EC is n= ot a closed loop system =96 does not use the O2 sensor output =96 unless so= mething has changed recently.

=A0<= /font>

Al

=A0<= /font>

-----Origina= l Message-----
From: Rot= ary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Bill Bradburry
Sent: Wednesday, September = 29, 2010 8:53 AM
To: Rot= ary motors in aircraft
Subject: [FlyRotary] Re: Auto tune/oxygen sensor

=A0

Bosch 11027 is the O2 sensor that Tracy recommends in the ins= tructions.=A0 I think the controller uses that input to maintain the mixtur= e where you set it.=A0 I don=92t think it is only used for setting the map = table.=A0 YMMV

=A0

Bill B

=A0

From: Rotary motors in aircraft [mai= lto:flyrot= ary@lancaironline.net] On Behalf O= f Al Gietzen
Sent: Wednesday, September = 29, 2010 12:07 PM
To: Ro= tary motors in aircraft
Subject: [FlyRotary] Re: Auto tune/oxygen sensor

=A0

=A0

I have the BOSCH= sensor 11027 and it works fine.

That=92s what I have also; and I think mine has something= close to 150 hrs and still going fine. =A0I seldom burn avgas, so that hel= ps.

I think one need= s the O2 sensor for auto tune.

Yes, it does.=A0 As I understand it; with the knobs cente= red the EM tunes to mid-range on the O2 sensor; roughly stoichometric.

=A0

Al

=A0

=A0

Rino

----- Original M= essage -----

<= font face=3D"Arial" size=3D"2">From: Ed Anderson

Sent: Wednesday, September 29, 2010 11:05 = AM

Subject: [FlyRotary] Re: Auto tune/oxygen = sensor

=A0

Bill, if it=92s = a one wire sensor, then just about any of the "universal" 1 wire = O2 sensors you find in your auto store will work.=A0

=A0

=A0If multiwire = (I.e. has a heater element and a separate sensor ground wire), then you nee= d to get one with the same number of wires.=A0 If you get the same make O2 = sensor, then the wires should be the same color.

=A0

=A0 Bosch has a = wire chart which tells you which color wire is which=A0 - this may help.=A0= I always get a Bosch unit - they might cost a few bucks more, but they are= generally good quality, available anywhere and you can find the wire color= code.=A0 Here's the wiring color code for the "Universal" Bo= sch unit.

=A0

Cable colour allocations for the Universal Oxygen Sensor are as= follows,

sensor output signal wire =3D black, sensor heater element cable= s =3D

White ( Note - heater is not polarity sensitive ) Sensor signal= ground

( where used ) =3D Grey

Important: The cable allocations must be assigned correctly. Ot= herwise

the Sensor could be destroyed

=A0

Don't let th= em sell you a wide band O2 sensor which a novice parts guy might try to do = because they all have 5 -6 wires and might get confused with a Narrow band = O2 sensor with a heater.

=A0

Ed=

=A0

<= b>From: Bill Schertz

<= b>Sent: Wednesda= y, September 29, 2010 9:10 AM

<= b>Subject: [FlyR= otary] Auto tune/oxygen sensor

=A0

Was going to do = some auto tune in the air yesterday, to get to some regions of the performa= nce map that can't be reached on the ground.

=A0

Took off and the= O2 sensor indication completely disappeared from the EM-2 display. Did one= circuit of the airport and landed.

=A0

Discovered that = the O2 sensor had failed (physically -- the top fell off and separated from= the body). This caused me to raise the following questions.<= /p>

=A0

1. I believe tha= t the oxygen sensor readout is only that, not used by the EC-2 for control = purposes.

2. When in auto = tune, is the EM-2 looking at the sensor for indications of which way to adj= ust the mixture? If not, what is the feedback mechanism?

=A0

I went to the Au= to parts store for a replacement, and ran into the problem that there are 1= 00's of different oxygen sensors, and they need to know what car it cam= e from. Anyone have the specs on what this sensor is?

=A0

=A0

Bill Schertz
KIS Cruiser #4045
N343BS
Phase I testing

<= /blockquote>

--0015174bee70622037049169b20f--