SERT Data mode items???
SERT Data mode items???
Ok I guess that I need a little assistance, since I cannot find my answers in the manual, so hopefully one of you guys will answer my questions.
On the data mode playback file there are some data areas that I do not understand.
I have the normal data for the VE front/rear recorded but also a data recording titled VE New Front, and VE New Rear. Does anyone know what these are, I thought they may be the recommended new settings for the VE tables but I dont see how the program could calculate them, unless the SERT is way better than I thought.
I also have data recordings titled O2 Integrator Front and Rear, which I can't find in the manual.
Lastly I have data titled O2 Sensor Front and O2 Sensor Rear logged in mV, I guess this gives feedback as to how rich or lean the AFR is and will assist me in changing the AFR tables, but I am not sure how to read them. I guess the higher the reading the richer the bike is running, and with the CLB tables set to 798mV, I guess that any reading over this is richer.
Paul
On the data mode playback file there are some data areas that I do not understand.
I have the normal data for the VE front/rear recorded but also a data recording titled VE New Front, and VE New Rear. Does anyone know what these are, I thought they may be the recommended new settings for the VE tables but I dont see how the program could calculate them, unless the SERT is way better than I thought.
I also have data recordings titled O2 Integrator Front and Rear, which I can't find in the manual.
Lastly I have data titled O2 Sensor Front and O2 Sensor Rear logged in mV, I guess this gives feedback as to how rich or lean the AFR is and will assist me in changing the AFR tables, but I am not sure how to read them. I guess the higher the reading the richer the bike is running, and with the CLB tables set to 798mV, I guess that any reading over this is richer.
Paul
Club Member
Joined: Feb 2007
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RE: SERT Data mode items???
I am not an expert on this but I believe the new values are what gets set after the SERT does its calculations on the feedback it is receiving from all of the sensors and that is the adjustment that is actually getting sent forward for the new fuel requirement.
Regaring rich or lean, your best bet is to use the flag in the upper right hand corner labeled "rich/lean" green is lean red is rich. This is active if you have recorded with o2 data.
Regaring rich or lean, your best bet is to use the flag in the upper right hand corner labeled "rich/lean" green is lean red is rich. This is active if you have recorded with o2 data.
Tourer
Joined: Apr 2007
Posts: 312
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From:
RE: SERT Data mode items???
From page 3 in the SERT User Manual -
a. VE New Front. This is the new calculated VE for the front cylinder that the ecm uses when running closed-loop.
b. VE New Rear. This is the new calculated VE for the rear cylinder that the ecm uses when running closed-loop.
c. O2 Integrator Front. This is an error value for the front cylinder.
d. O2 Integrator Rear. This is an error value for the rear cylinder.
e. O2 Sensor Front. This is the milli-volt reading of the front O2 sensor.
f. O2 Sensor Rear. This is the milli-volt reading of the rear O2 sensor.
a. VE New Front. This is the new calculated VE for the front cylinder that the ecm uses when running closed-loop.
b. VE New Rear. This is the new calculated VE for the rear cylinder that the ecm uses when running closed-loop.
c. O2 Integrator Front. This is an error value for the front cylinder.
d. O2 Integrator Rear. This is an error value for the rear cylinder.
e. O2 Sensor Front. This is the milli-volt reading of the front O2 sensor.
f. O2 Sensor Rear. This is the milli-volt reading of the rear O2 sensor.
Road Master
Joined: Jul 2005
Posts: 916
Likes: 3
From: Mauldin, SC
RE: SERT Data mode items???
The tuning manual does have a brief explanation of VE New. VE New is the value used by the ECM, not sure how it is calculated though.
The O2 integration is an "area under the curve" calculation. Since the narrow band O2 sensors are basically switches vs true analog feedback devices, the ECM calculates (integrates) the amount of time the feedback indicates lean or richvs the amount of error lean or rich from setpoint.
[ol][ol]
[/ol][/ol]
7. The main Data Mode window will now list and record the following closed-loop data items.
[ol][ol]
[ol][*]a. VE New Front. This is the new calculated VE for the front cylinder that the ecm uses when running closed-loop.
[*]b. VE New Rear. This is the new calculated VE for the rear cylinder that the ecm uses when running closed-loop.
[*]c. O2 Integrator Front. This is an error value for the front cylinder.
[*]d. O2 Integrator Rear. This is an error value for the rear cylinder.
[*]e. O2 Sensor Front. This is the milli-volt reading of the front O2 sensor.
[*]f. O2 Sensor Rear. This is the milli-volt reading of the rear O2 sensor.
[/ol][/ol][/ol]
The O2 integration is an "area under the curve" calculation. Since the narrow band O2 sensors are basically switches vs true analog feedback devices, the ECM calculates (integrates) the amount of time the feedback indicates lean or richvs the amount of error lean or rich from setpoint.
[ol][ol]
[/ol][/ol]
7. The main Data Mode window will now list and record the following closed-loop data items.
[ol][ol]
[ol][*]a. VE New Front. This is the new calculated VE for the front cylinder that the ecm uses when running closed-loop.
[*]b. VE New Rear. This is the new calculated VE for the rear cylinder that the ecm uses when running closed-loop.
[*]c. O2 Integrator Front. This is an error value for the front cylinder.
[*]d. O2 Integrator Rear. This is an error value for the rear cylinder.
[*]e. O2 Sensor Front. This is the milli-volt reading of the front O2 sensor.
[*]f. O2 Sensor Rear. This is the milli-volt reading of the rear O2 sensor.
[/ol][/ol][/ol]
Club Member
Joined: Feb 2007
Posts: 1,678
Likes: 3
RE: SERT Data mode items???
wildbill
I want to thank you for this question. I think you just cured my decel pop issue. I noticed that on my recording in a pop area this value was 110% and a jump in my ve value and ve new value all in the front cylinder. This led to a 10 unit fuel drop between records. I then did a lookup in my front ve table and found that the 7% column had not been tuned during my dyno tuning. I made an adjustment in the area the problem was based on it being 10% too lean, rode the bike for an hour and could not duplicate the problem. I am going to ride to work tomorrow and a short 100 mile ride on saturday to confirm this is working. These will be different conditions than I had tonight so I am hopeful that I will not hear so much as a poof.
Again, this question let me to look at an area that I have overlooked while analyzing the data. And for you others out there one thing that really helps analyze the data is the use of the export feature in the data mode. Looking at it in a spreadsheet is alot easier to identify swings than trying to navigate the graph. You can also look at a wider variety data at the same time to see where there are like circumstances.
oh yeah - I'm not declaring victory until Saturday.
I want to thank you for this question. I think you just cured my decel pop issue. I noticed that on my recording in a pop area this value was 110% and a jump in my ve value and ve new value all in the front cylinder. This led to a 10 unit fuel drop between records. I then did a lookup in my front ve table and found that the 7% column had not been tuned during my dyno tuning. I made an adjustment in the area the problem was based on it being 10% too lean, rode the bike for an hour and could not duplicate the problem. I am going to ride to work tomorrow and a short 100 mile ride on saturday to confirm this is working. These will be different conditions than I had tonight so I am hopeful that I will not hear so much as a poof.
Again, this question let me to look at an area that I have overlooked while analyzing the data. And for you others out there one thing that really helps analyze the data is the use of the export feature in the data mode. Looking at it in a spreadsheet is alot easier to identify swings than trying to navigate the graph. You can also look at a wider variety data at the same time to see where there are like circumstances.
oh yeah - I'm not declaring victory until Saturday.
Club Member
Joined: Feb 2007
Posts: 1,678
Likes: 3
RE: SERT Data mode items???
No victory [:@]. I have the pop back. Strange thing is when I rode my 50-60 pound son around I didn't have any pops. When I was alone I got them. They are always single and are now inconsistent. I hate electrical stuff...
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