X-Virus-Scanned: clean according to Sophos on Logan.com Return-Path: Received: from omta3.toronto.rmgopenwave.com ([4.59.182.101] verified) by logan.com (CommuniGate Pro SMTP 5.3.9) with ESMTP id 4485925 for flyrotary@lancaironline.net; Wed, 29 Sep 2010 10:24:19 -0400 Received-SPF: pass receiver=logan.com; client-ip=4.59.182.101; envelope-from=lacombr@nbnet.nb.ca Received: from torspm04.toronto.rmgopenwave.com ([142.167.165.148]) by tormtz03.toronto.rmgopenwave.com (InterMail vM.8.00.01.00 201-2244-105-20090324) with ESMTP id <20100929142342.VTPN851.tormtz03.toronto.rmgopenwave.com@torspm04.toronto.rmgopenwave.com> for ; Wed, 29 Sep 2010 10:23:42 -0400 Received: from PCdeRita ([142.167.165.148]) by torspm04.toronto.rmgopenwave.com with SMTP id <20100929142342.SISA14488.torspm04.toronto.rmgopenwave.com@PCdeRita> for ; Wed, 29 Sep 2010 10:23:42 -0400 Message-ID: From: "Rino" To: "Rotary motors in aircraft" References: In-Reply-To: Subject: Re: [FlyRotary] Re: Auto tune/oxygen sensor Date: Wed, 29 Sep 2010 11:23:18 -0300 MIME-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_NextPart_000_0082_01CB5FC8.B750E0E0" X-Priority: 3 X-MSMail-Priority: Normal X-Mailer: Microsoft Windows Mail 6.0.6002.18197 X-MimeOLE: Produced By Microsoft MimeOLE V6.0.6002.18263 X-Opwv-CommTouchExtSvcRefID: str=0001.0A020202.4CA34BEE.0144,ss=1,fgs=0 This is a multi-part message in MIME format. ------=_NextPart_000_0082_01CB5FC8.B750E0E0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable I have the BOSCH sensor 11027 and it works fine. I think one needs the O2 sensor for auto tune. Rino ----- Original Message -----=20 From: Ed Anderson=20 To: Rotary motors in aircraft=20 Sent: Wednesday, September 29, 2010 11:05 AM Subject: [FlyRotary] Re: Auto tune/oxygen sensor Bill, if it's a one wire sensor, then just about any of the = "universal" 1 wire O2 sensors you find in your auto store will work.=20 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 = 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 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 = with a Narrow band O2 sensor with a heater. Ed From: Bill Schertz=20 Sent: Wednesday, September 29, 2010 9:10 AM To: Rotary motors in aircraft=20 Subject: [FlyRotary] Auto tune/oxygen sensor 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. 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.=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? 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?=20 Bill Schertz KIS Cruiser #4045 N343BS Phase I testing ------=_NextPart_000_0082_01CB5FC8.B750E0E0 Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable
I have the BOSCH sensor 11027 and it = works=20 fine.
I think one needs the O2 sensor for = auto=20 tune.
 
Rino
----- Original Message -----
From:=20 Ed=20 Anderson
Sent: Wednesday, September 29, = 2010 11:05=20 AM
Subject: [FlyRotary] Re: Auto = tune/oxygen=20 sensor

Bill, if it=92s a one wire sensor, then just = about any of=20 the "universal" 1 wire O2 sensors you find in your auto store will=20 work. 
 
 If multiwire (I.e. has a heater element = and a=20 separate sensor ground wire), then you need to get one with the same = number of=20 wires.  If you get the same make O2 sensor, then the wires should = be the=20 same color.
 
  Bosch has a wire chart which tells you = which=20 color wire is which  - this may help.  I always get a Bosch = unit -=20 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=20 wiring color code for the "Universal" Bosch unit.
 

Cable colour = allocations for the=20 Universal Oxygen Sensor are as follows,

sensor output=20 signal wire =3D black, sensor heater element cables = =3D

White ( Note - heater = is not polarity=20 sensitive ) Sensor signal ground

( where used ) =3D = Grey

Important: The cable = allocations must=20 be assigned correctly. Otherwise

the Sensor could be=20 destroyed

 
Don't let them sell you a wide band O2 sensor = which a=20 novice parts guy might try to do because they all have 5 -6 wires and = might=20 get confused with 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=20 yesterday, to get to some regions of the performance map that can't be = reached=20 on the ground.
 
Took off and the O2 sensor indication = completely=20 disappeared from the EM-2 display. Did one circuit of the airport and=20 landed.
 
Discovered that the O2 sensor had = failed=20 (physically -- the top fell off and separated from the body). This = caused me=20 to raise the following questions.
 
1. I believe that the oxygen sensor = readout is=20 only that, not used by the EC-2 for control purposes.
2. When in auto tune, is the EM-2 = looking at the=20 sensor for indications of which way to adjust the mixture? If not, = what is the=20 feedback mechanism?
 
I went to the Auto parts store for a = replacement,=20 and ran into the problem that there are 100's of different oxygen = sensors, and=20 they need to know what car it came from. Anyone have the specs on what = this=20 sensor is?
 
 
Bill Schertz
KIS Cruiser=20 #4045
N343BS
Phase I = testing
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