UK/EU/USA riders please help me understand O2 - 600RR.net
Exhaust & Fuel Delivery Tips on how to get the most out of your bike

 
LinkBack Thread Tools
post #1 of 5 (permalink) Old 08-18-2014, 01:18 AM Thread Starter
Moto GP Racer
 
Join Date: Feb 2009
Location: Paradise of C. Cali
Posts: 4,886
Thanks: 1,040
Thanked 662 Times in 618 Posts
Feedback Score: 1 reviews
UK/EU/USA riders please help me understand O2

Sensors .....07+ CBR's in EU/UK have them?

A respected friend says bikes on EU/UK specs have 02 sensors.

but they only have an emission control function.......so they do not have a real control loop to the ecu (not like OBD 2 ecu's on autos).

Where would they connect to the ecu, Are EU/UK ecu's different?

US spec bikes do not?

My 09 (cali spec does not have an O2 sensor).

AFIK no USA spec bikes come with them...........?.

Last edited by tary preisser; 08-18-2014 at 01:27 AM. Reason: beer fueled - ask a dumb ?
tary preisser is offline  
Sponsored Links
Advertisement
 
post #2 of 5 (permalink) Old 08-18-2014, 03:01 AM
Moto GP Racer
 
Rad Rage's Avatar
 
Join Date: Mar 2012
Location: Under Consideration
Posts: 5,599
Thanks: 811
Thanked 902 Times in 790 Posts
Feedback Score: 3 reviews
The only thing I know is that the EU (which includes UK) and US ECUs are different. By testament of HMRacing which have informed me that there are enough differences to prevent their dashes from working with US ECUs. Secondly, EU bikes do not require Dynojet's IRC/Bazzaz's Z-Bomb, installing them would mess the bike up because they are not subject to the stock ignition retard at 100% throttle like the US ECUs.

Euro bikes have O2 sensors which are visible if you look from the right side of the bike at the header extension right below the rearsets, it is used to keep emissions in check. Don't know about the US bikes regarding this point.

2011 CBR600RR 'X-Ray' Build Thread
https://www.600rr.net/vb/showthread.php?t=294795


Co-President of Team46

"My bike is too fast for the track" Ubercool ZX-14R rider.
Rad Rage is offline  
The Following User Says Thank You to Rad Rage For This Useful Post:
tary preisser (08-18-2014)
post #3 of 5 (permalink) Old 08-19-2014, 11:50 PM Thread Starter
Moto GP Racer
 
Join Date: Feb 2009
Location: Paradise of C. Cali
Posts: 4,886
Thanks: 1,040
Thanked 662 Times in 618 Posts
Feedback Score: 1 reviews
What purpose does the 02 sensor serve?

is it just an (limit value exceeded) idiot light?

does it modify fueling/ignition at all?
tary preisser is offline  
 
post #4 of 5 (permalink) Old 08-20-2014, 02:30 AM
Moto GP Racer
 
Rad Rage's Avatar
 
Join Date: Mar 2012
Location: Under Consideration
Posts: 5,599
Thanks: 811
Thanked 902 Times in 790 Posts
Feedback Score: 3 reviews
Quote:
Originally Posted by tary preisser View Post
What purpose does the 02 sensor serve?

is it just an (limit value exceeded) idiot light?

does it modify fueling/ignition at all?
My guess is the O2 sensor basically reads the oxygen levels from the exhaust streams and sends these readings to the ECU which can then compensate by adjusting the air to fuel ratio so that it stays within the programmed limits, complying with whatever level emmission laws constitute as acceptable.

2011 CBR600RR 'X-Ray' Build Thread
https://www.600rr.net/vb/showthread.php?t=294795


Co-President of Team46

"My bike is too fast for the track" Ubercool ZX-14R rider.

Last edited by Rad Rage; 08-20-2014 at 02:39 AM.
Rad Rage is offline  
post #5 of 5 (permalink) Old 08-20-2014, 02:43 AM
BOTY 2014 Winner
 
Join Date: Oct 2013
Posts: 4,620
Thanks: 14
Thanked 1,055 Times in 859 Posts
Garage
Feedback Score: 3 reviews
My understanding with o2 sensors on bikes is that the bike will only run in open loop to trim the fuel tables within the emissions standards testing zones. Basically they will lean the mixture in the bottom end. I'm not sure if there are any bikes out there that run a true open loop. Its basically a band aid to pass emissions.

Sometimes bikes fitted with factory o2s will have a hitch in the fuelling when the bike crosses over from a modified open loop back to closed loop. This is easily defeated with an o2 emulator.
wibbly is offline  
The Following User Says Thank You to wibbly For This Useful Post:
tary preisser (08-20-2014)
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now



In order to be able to post messages on the 600RR.net forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Posting Rules  
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome