Talk:Oxygen sensor

message: In re: the Sensor Failures section, I believe the statement, "For heated sensors, normal deposits are burned off during operation and failure occurs due to catalyst depletion" is incorrect. Heated sensors fail for the same reason non-heated sensors do - contamination. Sensor heaters also fail. In fact, more heated sensors are replaced for burned out heater elements than contamination. A catalyst by definition is not consumed in the reaction. I will try to find citation for this as time permits. RoyalDoyle (talk) 07:09, 10 January 2008 (UTC)
replies: text: I agree, this line is utter rubbish. I will remove it now, since its been a while without somebody changing that. Renizer (talk) 17:41, 26 January 2011 (UTC)

text: As far as i know, the heater element is kind of self-contained, in that there's no external control loop for its temperature. The heater element wires just get hooked up to an ignition-switched +12V and GND. I admit i have no clue how it works technically, but i assume the heater element switches off when a certain temperature is sensed. If somebody can shed some more light on this it would be nice to add to the article. Renizer (talk) 17:41, 26 January 2011 (UTC)
thread_title:  Initial comment 

message: The sensor described in that article is simply a wide-band oxygen sensor. Therefore, it should be merged here, unless the article is expanded with other types of gas analyzers which are used to determine AFR (like CO IR interferometers and Orsat apparatus). --arny (talk) 20:30, 6 November 2008 (UTC)
replies: text: Are you referring to AFR sensor?  That article is already very long so I don't think it should be merged with Oxygen sensor. Biscuittin (talk) 13:23, 17 March 2009 (UTC)
replies: text: Then perhaps THIS article should be merged there? This is clearly a duplication... arny (talk) 10:41, 4 August 2009 (UTC)

text: Oxygen sensors are used outside of automobile engineering. They are also used by scuba divers to determine the percentage of oxygen in a filled cylinder of nitrox, and as a component of some rebreathers that dynamically adjust the fraction of oxygen in the mixture being breathed. As there are no converters or fuel involved for scuba diving, perhaps a discussion of technical differences belongs in the AFR sensor article. For similar reasons, I would not support merging Oxygen sensor into AFR sensor as if that were the only application. --RexxS (talk) 18:39, 11 June 2010 (UTC)
thread_title:  Merger proposal 

message: Great article, but no mention of the operating temperature range of the different sensors. This information would be useful for (people like me) coming here to understand and test these devices. My Zirconia sensor starts to operate at about 400 degrees Celsius. Normal exhaust gas temperatures are probably between 600 - 900 degrees Celsius.  — Preceding unsigned comment added by 79.121.186.28 (talk) 08:38, 20 February 2014 (UTC)
thread_title:  Normal Operating Temperature Ranges 

message: In the section "Titania sensor", there's a claim regarding not requiring access to a reference sample of atmospheric air, in contrast to the zirconia sensors which do:  
"While most automotive sensors are submersible, zirconia-based sensors require a very small supply of reference air from the atmosphere. In theory, the sensor wire harness and connector are sealed. Air that leaches through the wire harness to the sensor is assumed to come from an open point in the harness - usually the ECU which is housed in an enclosed space like the trunk or vehicle interior."
Yet O2 sensors that I've seen, and see in images via google, and also the one in this article's lead picture, do not have a sealed wiring harness up to the sensor body. Instead there are individual wires. So access to atmospheric air is simply through some orifice on the sensor body, one imagines. 98.176.1.150 (talk) 19:42, 17 May 2017 (UTC)
thread_title:  Dubious claim about atmosphere via wiring harness 

message: This section is written largely from the perspective of emissions control, which is an excessively narrow focus, and places direct causality where it is not appropriate (possibly a post hoc ergo propter hoc fallacy).
The primary purpose of an oxygen sensor for automotive applications is to determine the state of tune of the engine. One of the benefits of this is the reduction of emissions, but other benefits include increased efficiency and power output.
Oxygen sensors are used to tune engines in performance applications, where emissions are not a consideration. The way this section is currently written, readers would not expect that to be the case.  D-qoi (talk) 06:11, 17 September 2017 (UTC)
thread_title:  Automotive Applications Needs Refocus. 

message: An editor has identified a potential problem with the redirect :Lambda sond and has thus listed it for discussion. This discussion will occur at Wikipedia:Redirects for discussion/Log/2022 July 26#Lambda sond until a consensus is reached, and readers of this page are welcome to contribute to the discussion.  BD2412 T 03:53, 26 July 2022 (UTC)
thread_title:  "Lambda sond" listed at [[Wikipedia:Redirects for discussion|Redirects for discussion]] 

message: The article Air–fuel ratio meter is a complete dog's breakfast, as discussed here several years ago.  It can't decide whether it is about wideband O2 sensors or something else.  It mostly duplicates information which is, or should be, in this article, although it is very poorly-sourced.  Some of the more coherent content from that article should be merged here to bring this article a little more up-to-date with modern technology.  If there is anything sensible left at Air–fuel ratio meter about something which isn't simply an oxygen sensor, it could be kept, but I suspect there won't be anything sensible worth keeping.  Lithopsian (talk) 15:24, 20 September 2023 (UTC)
replies: text: Agree that a merge is warranted, but perhaps Air–fuel ratio might be a better target. The content of Air–fuel ratio meter is almost entirely unreferenced; of the two references, one is a blog and the other a rather technical manual. I also note that the page has been tagged for poor referencing since 2013, so there has been enough opportunity for improvement. So, I suggest a merge of only the referenced material (or apply TNT!). Klbrain (talk) 07:51, 26 February 2024 (UTC)
replies: text: Merge executed to Air–fuel_ratio#Air-fuel_ratio_meters. TRL (talk) 03:58, 1 April 2024 (UTC)
thread_title:  Proposed merger