i want to reading Air Fuel Ratio
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i want to reading Air Fuel Ratio
Hello everybady;
i have got a İmpreza (1.5R 2007 model ) and i use to Hobd 1.3.2 free version.
and i want to reading Air Fuel Ratio .
I can read with Torque Pro, but I can not read with Hobd.
Torque has a special ID ff1249 and it is working. i dont know Torque used witch OBD PID.
i guess used, 01 24 (Oxygen Sensor 1 AB: Fuel–Air Equivalence Ratio). and i checked Wikipedia , formula is 2/65536(256A+B)
but i checked source code of the Hobdcore.dll ver 0.53 has a different calculation method and formula.
If I think that the formula is not wrong ,I can not do this.
i create a new ecuxlm and try ;
<parameter id="A/F">
<description>
<name>Air Fuel Ratio</name>
<unit></unit>
</description>
<address>
<byte>0x24</byte>
</address>
<valueab>0.0000305</valueab>
</parameter>
return value :32651 , it is not correct value .
Please help me for correct parameter and read for AF/R
And,
Which configuration should I use.
Thank you.
i have got a İmpreza (1.5R 2007 model ) and i use to Hobd 1.3.2 free version.
and i want to reading Air Fuel Ratio .
I can read with Torque Pro, but I can not read with Hobd.
Torque has a special ID ff1249 and it is working. i dont know Torque used witch OBD PID.
i guess used, 01 24 (Oxygen Sensor 1 AB: Fuel–Air Equivalence Ratio). and i checked Wikipedia , formula is 2/65536(256A+B)
but i checked source code of the Hobdcore.dll ver 0.53 has a different calculation method and formula.
If I think that the formula is not wrong ,I can not do this.

i create a new ecuxlm and try ;
<parameter id="A/F">
<description>
<name>Air Fuel Ratio</name>
<unit></unit>
</description>
<address>
<byte>0x24</byte>
</address>
<valueab>0.0000305</valueab>
</parameter>
return value :32651 , it is not correct value .
Please help me for correct parameter and read for AF/R
And,
Which configuration should I use.
Thank you.
- Новичок
- Имя: Ceyhun
- Сообщения: 4
- Зарегистрирован: 28 июл 2018, 00:50
Re: i want to reading Air Fuel Ratio
Hello.
do:
-screens/setting/system settings/logging level - trace
-connect auto
-screens/sensors list/click to Lambda_b1s1 this is "01 24 (Oxygen Sensor 1 AB: Fuel–Air Equivalence Ratio). and i checked Wikipedia , formula is 2/65536(256A+B)"
or use code
Make a screen return value A/F and Lambda_b1s1. And send log.txt
do:
-screens/setting/system settings/logging level - trace
-connect auto
-screens/sensors list/click to Lambda_b1s1 this is "01 24 (Oxygen Sensor 1 AB: Fuel–Air Equivalence Ratio). and i checked Wikipedia , formula is 2/65536(256A+B)"
or use code
- Код: Выделить всё
<parameter id="A/F">
<description>
<name>Air Fuel Ratio</name>
<unit></unit>
<description>Air Fuel Ratio</description>
</description>
<raw>0124</raw>
<word-0>0.0000305</word-0>
<offset>0</offset>
</parameter>
Make a screen return value A/F and Lambda_b1s1. And send log.txt
FAQ: https://hobdrive.userecho.com/knowledge-bases/4-baza-znanij/articles
Уровень trace лога:экраны/настройки/системные настройки/отладочные логи/trace
Просьба сделать себе подпись:
HobDrive(1.6.25lic)+ZenFoneM1(9.0)+Elm327Carista+RenMegane3(SID305)
Уровень trace лога:экраны/настройки/системные настройки/отладочные логи/trace
Просьба сделать себе подпись:
HobDrive(1.6.25lic)+ZenFoneM1(9.0)+Elm327Carista+RenMegane3(SID305)
Re: i want to reading Air Fuel Ratio
Thank you ,
I tried this code and nothing changed.
upload log.txt
Thank you from now.
I tried this code and nothing changed.
upload log.txt
Thank you from now.
- Вложения
-
log.txt
- (148.74 КБ) Скачиваний: 1392
- Новичок
- Имя: Ceyhun
- Сообщения: 4
- Зарегистрирован: 28 июл 2018, 00:50
Re: i want to reading Air Fuel Ratio
[TRACE] 2018-7-28 9:35:14.220[OBD2Engine] ----> OBD2.Lambda_b1s1
[TRACE] 2018-7-28 9:35:14.226[OBD2Engine] -> SENSOR_HEADER_ACK
[TRACE] 2018-7-28 9:35:14.233[OBD2Engine] SendCommand:0124
[TRACE] 2018-7-28 9:35:14.240[OBD2Engine] -> SENSOR_ACK
[TRACE] 2018-7-28 9:35:14.506[OBD2Engine] HandleReply: 41 24 7E 41 42 4E
7E 41=32321
32321*0.0000305=0.9857905
here is the exact meaning 0.9857905
you have what is displayed?
FAQ: https://hobdrive.userecho.com/knowledge-bases/4-baza-znanij/articles
Уровень trace лога:экраны/настройки/системные настройки/отладочные логи/trace
Просьба сделать себе подпись:
HobDrive(1.6.25lic)+ZenFoneM1(9.0)+Elm327Carista+RenMegane3(SID305)
Уровень trace лога:экраны/настройки/системные настройки/отладочные логи/trace
Просьба сделать себе подпись:
HobDrive(1.6.25lic)+ZenFoneM1(9.0)+Elm327Carista+RenMegane3(SID305)
Re: i want to reading Air Fuel Ratio
Yes, Lambda is 0.99,
But, I was trying to find a value of 14.7:1 .
I found that I was looking for .
3 ve 4. byte (42 4E) is DEC 16974
16974 * 8/65535= 2.072 V
impreza has Wideband Front O2 Sensor, it is has output 0 between 5 v.
To see as 14.7 , Voltage x 2 +10
2.072 x 2 +10 =14.14

maybe needed calibration for reading, close to real value
For my car = voltage x1,7 +11
I think the car is a bit rich. 14.52:1
Thank you for helping to solve the problem.
But, I was trying to find a value of 14.7:1 .
I found that I was looking for .
3 ve 4. byte (42 4E) is DEC 16974
16974 * 8/65535= 2.072 V
impreza has Wideband Front O2 Sensor, it is has output 0 between 5 v.
To see as 14.7 , Voltage x 2 +10
2.072 x 2 +10 =14.14

maybe needed calibration for reading, close to real value

I think the car is a bit rich. 14.52:1
Thank you for helping to solve the problem.
- Новичок
- Имя: Ceyhun
- Сообщения: 4
- Зарегистрирован: 28 июл 2018, 00:50
Re: i want to reading Air Fuel Ratio
ceturan писал(а):Yes, Lambda is 0.99,
But, I was trying to find a value of 14.7:1 .
I found that I was looking for .
3 ve 4. byte (42 4E) is DEC 16974
16974 * 8/65535= 2.072 V
impreza has Wideband Front O2 Sensor, it is has output 0 between 5 v.
To see as 14.7 , Voltage x 2 +10
2.072 x 2 +10 =14.14
maybe needed calibration for reading, close to real valueFor my car = voltage x1,7 +11
I think the car is a bit rich. 14.52:1
Thank you for helping to solve the problem.
- Код: Выделить всё
<parameter id="A/F">
<description>
<name>Air Fuel Ratio</name>
<unit></unit>
<description>Air Fuel Ratio</description>
</description>
<raw>0124</raw>
<word-2>0.000244</word-2>
<offset>10</offset>
</parameter>
FAQ: https://hobdrive.userecho.com/knowledge-bases/4-baza-znanij/articles
Уровень trace лога:экраны/настройки/системные настройки/отладочные логи/trace
Просьба сделать себе подпись:
HobDrive(1.6.25lic)+ZenFoneM1(9.0)+Elm327Carista+RenMegane3(SID305)
Уровень trace лога:экраны/настройки/системные настройки/отладочные логи/trace
Просьба сделать себе подпись:
HobDrive(1.6.25lic)+ZenFoneM1(9.0)+Elm327Carista+RenMegane3(SID305)
Re: i want to reading Air Fuel Ratio
thank you kdika
it is working code; for my O2 sensor
<parameter id="AF/R">
<description>
<name>Air Fuel Ratio</name>
<unit>:1</unit>
</description>
<address>
<byte>0x24</byte>
</address>
<valuecd>0.0002075</valuecd>
<offset>11</offset>
</parameter>
it is working code; for my O2 sensor
<parameter id="AF/R">
<description>
<name>Air Fuel Ratio</name>
<unit>:1</unit>
</description>
<address>
<byte>0x24</byte>
</address>
<valuecd>0.0002075</valuecd>
<offset>11</offset>
</parameter>
- Новичок
- Имя: Ceyhun
- Сообщения: 4
- Зарегистрирован: 28 июл 2018, 00:50
Сообщений: 7
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