X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from qmta14.emeryville.ca.mail.comcast.net ([76.96.27.212] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTP id 4486414 for flyrotary@lancaironline.net; Wed, 29 Sep 2010 15:36:29 -0400 Received-SPF: pass receiver=logan.com; client-ip=76.96.27.212; envelope-from=hoursaway1@comcast.net Received: from omta12.emeryville.ca.mail.comcast.net ([76.96.30.44]) by qmta14.emeryville.ca.mail.comcast.net with comcast id CcMy1f0030x6nqcAEjbtDj; Wed, 29 Sep 2010 19:35:53 +0000 Received: from sz0081.ev.mail.comcast.net ([76.96.26.137]) by omta12.emeryville.ca.mail.comcast.net with comcast id Cjbs1f00a2xV6SL8Yjbsnv; Wed, 29 Sep 2010 19:35:52 +0000 Date: Wed, 29 Sep 2010 19:35:52 +0000 (UTC) From: hoursaway1@comcast.net To: Rotary motors in aircraft Message-ID: <983462875.2080828.1285788952811.JavaMail.root@sz0081a.emeryville.ca.mail.comcast.net> In-Reply-To: Subject: Re: [FlyRotary] Re: Auto tune/oxygen sensor MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_2080827_1043454211.1285788952810" X-Originating-IP: [208.254.22.50] X-Mailer: Zimbra 6.0.5_GA_2429.RHEL4 (ZimbraWebClient - IE7 (Win)/6.0.5_GA_2427.RHEL4) ------=_Part_2080827_1043454211.1285788952810 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Misspoke,=C2=A0 closed loop/active responce O2 sys.=C2=A0=C2=A0=C2=A0=C2=A0= David R. Cook=C2=A0=C2=A0 RV6A=C2=A0 Rotary.=20 ----- Original Message -----=20 From: hoursaway1@comcast.net=20 To: "Rotary motors in aircraft" =20 Sent: Wednesday, September 29, 2010 3:28:46 PM=20 Subject: [FlyRotary] Re: Auto tune/oxygen sensor=20 When you have the MAP table set where you want it you can remove the O2 sen= sor, the EC2 is not an open loop/active O2 responsive sys.=C2=A0 ( in Auto-= Tune it is ).=C2=A0Then you could burn 100LL if wanted. =C2=A0=C2=A0=C2=A0= =C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0=C2=A0 David R. Cook=C2=A0 RV6A R= otary.=20 ----- Original Message -----=20 From: "Bill Bradburry" =20 To: "Rotary motors in aircraft" =20 Sent: Wednesday, September 29, 2010 12:53:03 PM=20 Subject: [FlyRotary] Re: Auto tune/oxygen sensor=20 Bosch 11027 is the O2 sensor that Tracy recommends in the instructions.=C2= =A0 I think the controller uses that input to maintain the mixture where yo= u set it.=C2=A0 I don=E2=80=99t think it is only used for setting the map t= able.=C2=A0 YMMV=20 Bill B=20 From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Beh= alf Of Al Gietzen=20 Sent: Wednesday, September 29, 2010 12:07 PM=20 To: Rotary motors in aircraft=20 Subject: [FlyRotary] Re: Auto tune/oxygen sensor=20 I have the BOSCH sensor 11027 and it works fine.=20 That=E2=80=99s what I have also; and I think mine has something close to 15= 0 hrs and still going fine. =C2=A0I seldom burn avgas, so that helps.=20 I think one needs the O2 sensor for auto tune.=20 Yes, it does.=C2=A0 As I understand it; with the knobs centered the EM tune= s to mid-range on the O2 sensor; roughly stoichometric.=20 Al=20 Rino=20 ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Wednesday, September 29, 2010 11:05 AM=20 Subject: [FlyRotary] Re: Auto tune/oxygen sensor=20 Bill, if it=E2=80=99s a one wire sensor, then just about any of the "univer= sal" 1 wire O2 sensors you find in your auto store will work.=C2=A0=20 =C2=A0If 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.=C2=A0 If you= get the same make O2 sensor, then the wires should be the same color.=20 =C2=A0 Bosch has a wire chart which tells you which color wire is which=C2= =A0 - this may help.=C2=A0 I always get a Bosch unit - they might cost a fe= w bucks more, but they are generally good quality, available anywhere and y= ou can find the wire color code.=C2=A0 Here's the wiring color code for the= "Universal" Bosch unit.=20 Cable colour allocations for the Universal Oxygen Sensor are as follows,=20 sensor output signal wire =3D black, sensor heater element cables =3D=20 White ( Note - heater is not polarity sensitive ) Sensor signal ground=20 ( where used ) =3D Grey=20 Important: The cable allocations must be assigned correctly. Otherwise=20 the Sensor could be destroyed=20 Don't let them sell you a wide band O2 sensor which a novice parts guy migh= t try to do because they all have 5 -6 wires and might get confused with a = Narrow band O2 sensor with a heater.=20 Ed=20 From: Bill Schertz=20 Sent: Wednesday, September 29, 2010 9:10 AM=20 To: Rotary motors in aircraft=20 Subject: [FlyRotary] Auto tune/oxygen sensor=20 Was going to do some auto tune in the air yesterday, to get to some regions= of the performance map that can't be reached on the ground.=20 Took off and the O2 sensor indication completely disappeared from the EM-2 = display. Did one circuit of the airport and landed.=20 Discovered that the O2 sensor had failed (physically -- the top fell off an= d separated from the body). This caused me to raise the following questions= .=20 1. I believe that the oxygen sensor readout is only that, not used by the E= C-2 for control purposes.=20 2. When in auto tune, is the EM-2 looking at the sensor for indications of = which way to adjust the mixture? If not, what is the feedback mechanism?=20 I went to the Auto parts store for a replacement, and ran into the problem = that there are 100's of different oxygen sensors, and they need to know wha= t car it came from. Anyone have the specs on what this sensor is?=20 Bill Schertz=20 KIS Cruiser #4045=20 N343BS=20 Phase I testing ------=_Part_2080827_1043454211.1285788952810 Content-Type: text/html; charset=utf-8 Content-Transfer-Encoding: quoted-printable <= div style=3D'font-family: Arial; font-size: 12pt; color: #000000'>Misspoke,=   closed loop/active responce O2 sys.     David R.= Cook   RV6A  Rotary.
----- Original Message -----
Fro= m: hoursaway1@comcast.net
To: "Rotary motors in aircraft" <flyrotary@= lancaironline.net>
Sent: Wednesday, September 29, 2010 3:28:46 PM
= Subject: [FlyRotary] Re: Auto tune/oxygen sensor

When you= have the MAP table set where you want it you can remove the O2 sensor, the= EC2 is not an open loop/active O2 responsive sys.  ( in Auto-Tune it = is ). Then you could burn 100LL if wanted.     &nb= sp;       David R. Cook  RV6A Rotary.----- Original Message -----
From: "Bill Bradburry" <bbradburry@bell= south.net>
To: "Rotary motors in aircraft" <flyrotary@lancaironlin= e.net>
Sent: Wednesday, September 29, 2010 12:53:03 PM
Subject: [F= lyRotary] Re: Auto tune/oxygen sensor

Bosch 11027 is the O2= sensor that Tracy recommends in the instructions.  I think the contro= ller uses that input to maintain the mixture where you set it.  I don= =E2=80=99t think it is only used for setting the map table.  YMMV

 <= /P>

Bill B<= /P>

 <= /P>

From: Rotary motors in aircraft [mailto:flyrotary@lancaironline.net] On Behalf Of Al Gietzen
Sent: Wednesday, September 29, 20= 10 12:07 PM
To: Rotary m= otors in aircraft
Subject: [FlyRotary] Re: Auto tune/oxygen sensor

 

 

I have the BOSCH s= ensor 11027 and it works fine.

That=E2=80=99s what= I have also; and I think mine has something close to 150 hrs and still goi= ng 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 to mid-range on t= he O2 sensor; roughly stoichometric.

 = ;

Al

 = ;

 

Rino=

----- Original Mes= sage -----

<= FONT face=3DArial size=3D2>From:<= SPAN style=3D"FONT-SIZE: 10pt; FONT-FAMILY: Arial"> Ed = Anderson

Wednesday, September 29, 2010 11:05 AM

[FlyRotary] Re: Auto tune/oxygen sensor

 

Bill, if it=E2=80= =99s a one wire sensor, then just about any of the "universal" 1 wire O2 se= nsors you find in your auto store will work. 

 

 If multiwire= (I.e. has a heater element and a separate sensor ground wire), then you ne= ed to get one with the same number of wires.  If you get 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  - this may help= .  I always get a Bosch unit - they might cost a few bucks more, but t= hey are generally good quality, available anywhere and you can find the wir= e color code.  Here's the wiring color code for the "Universal" Bosch = unit.

 

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

sensor output signal wire =3D black, sensor heater element cables =3D

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

( where used ) =3D Grey

Important: The cable allocations must be assigned correctly. Otherw= ise

the Sensor could be destroyed

 

Don't let them sel= l you a wide band O2 sensor which a novice parts guy might try to do becaus= e they all have 5 -6 wires and might get confused with a Narrow band O2 sen= sor with a heater.

 

Ed

&nb= sp;

<= B>From: Bill Schertz

<= B>Sent: Wednesday, Septe= mber 29, 2010 9:10 AM

<= B>Subject: [FlyRotary] A= uto tune/oxygen sensor

 

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

 

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

 

Discovered that th= e O2 sensor had failed (physically -- the top fell off and separated from t= he 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 pu= rposes.

2. When in auto tu= ne, is the EM-2 looking at the sensor for indications of which way to adjus= t the mixture? If not, what is the feedback mechanism?

 

I went to the Auto= parts store for a replacement, and ran into the problem that there are 100= 's of different oxygen sensors, and they need to know what car it came from= . Anyone have the specs on what this sensor is?

 

 

Bill Schertz
KIS Cruiser #4045
N343BS
Phase I testing

------=_Part_2080827_1043454211.1285788952810--