Kleemann/Lucas: A/F ratio monitoring
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Kleemann/Lucas: A/F ratio monitoring
Hello Kleemann/Lucas,
Does the Kleemann Kompressor system come with some kind of monitoring device (Air/Fuel meter, warning lights etc...) to monitor the correct Air/Fuel ratio at all RPM range ???
My biggest concern is getting the correct Air/Fuel ratio, as I do not have access to Dyno machines
Your feedback is greatly appreciated.
Thanks
Does the Kleemann Kompressor system come with some kind of monitoring device (Air/Fuel meter, warning lights etc...) to monitor the correct Air/Fuel ratio at all RPM range ???
My biggest concern is getting the correct Air/Fuel ratio, as I do not have access to Dyno machines
Your feedback is greatly appreciated.
Thanks
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From: Colorado
Re: Kleemann/Lucas: A/F ratio monitoring
Originally posted by nong
Hello Kleemann/Lucas,
Does the Kleemann Kompressor system come with some kind of monitoring device (Air/Fuel meter, warning lights etc...) to monitor the correct Air/Fuel ratio at all RPM range ???
My biggest concern is getting the correct Air/Fuel ratio, as I do not have access to Dyno machines
Your feedback is greatly appreciated.
Thanks
Hello Kleemann/Lucas,
Does the Kleemann Kompressor system come with some kind of monitoring device (Air/Fuel meter, warning lights etc...) to monitor the correct Air/Fuel ratio at all RPM range ???
My biggest concern is getting the correct Air/Fuel ratio, as I do not have access to Dyno machines
Your feedback is greatly appreciated.
Thanks
The KLEEMANN kompressor system does not include any type of A/F monitoring device. The A/F ratio is monitored and recorded before the kompressor is installed, and is also checked after the kompressor is installed to ensure no change in A/F ratio from stock to supercharged. The A/F ratio will be checked yet again at the 1500 mile service after the kompressor is installed. Per your request, we can install any type of gauge you want from A/F gauge, to fuel pressure, to boost gauges. We installed a boost guage and a fuel pressure gauge in Timster's CLK55 after we installed the kompressor. Just let us know what you want, and we will do our best to provide it.
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Thank you CoryU.
My next question is:
What is the best way to determine the A/F ratio without the aid of Dyno machines or MB StarDiagnostic DAS system, but just with the 3rd party Generic OBD2 scan tool such as AutoXray or ToolRama ?
Thanks again
My next question is:
What is the best way to determine the A/F ratio without the aid of Dyno machines or MB StarDiagnostic DAS system, but just with the 3rd party Generic OBD2 scan tool such as AutoXray or ToolRama ?
Thanks again
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nong-
KLEEMANN has spent quite a lot of time making sure the A/F ratio is correct under all circumstances. You should not need any additional devices to show A/F once the system is insatlled and tuned by your KLEEMANN authorized shop.
The OBDII or MBZ self diag system will turn on MIL or Check Engine light when a A/F ratio porblem causes a secondary fault like a cylinder misfire, too rich/lean etc. The ME 2.0 and 2.8 systems are an active target driven system, continuosly making adjustments to reach ideal lambda values, if your car falls out of line you will know at once and the car will not allow continued operation for very long.
In any case- the AutoXRay does work well with the MBZ cars, as do many other "generic" scan tools. You can also back-probe the primary (leading) O2 senor signal wire with a DVM and read the voltage directly. If any of what I just said doesnt make any sense, then you are probably better off using the scan tool.
KLEEMANN has spent quite a lot of time making sure the A/F ratio is correct under all circumstances. You should not need any additional devices to show A/F once the system is insatlled and tuned by your KLEEMANN authorized shop.
The OBDII or MBZ self diag system will turn on MIL or Check Engine light when a A/F ratio porblem causes a secondary fault like a cylinder misfire, too rich/lean etc. The ME 2.0 and 2.8 systems are an active target driven system, continuosly making adjustments to reach ideal lambda values, if your car falls out of line you will know at once and the car will not allow continued operation for very long.
In any case- the AutoXRay does work well with the MBZ cars, as do many other "generic" scan tools. You can also back-probe the primary (leading) O2 senor signal wire with a DVM and read the voltage directly. If any of what I just said doesnt make any sense, then you are probably better off using the scan tool.
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Thank you for your feedback, Kleemann.
Since O2 sensors are temperature dependent, how can we know which voltage corresponse to which A/F ratio and at what EGT ?
I imagine tha the EGT would be varied after the installation of the Kompressor as we are burning more fuel now, is this correct ?
I've tried connecting scan tool to my W203, but when I monitor the live O2sensor voltage, they oscillate constantly (close loop). I feel that I'm missing some thing here, can you please shed some lights on this ?
Thanks again
Since O2 sensors are temperature dependent, how can we know which voltage corresponse to which A/F ratio and at what EGT ?
I imagine tha the EGT would be varied after the installation of the Kompressor as we are burning more fuel now, is this correct ?
I've tried connecting scan tool to my W203, but when I monitor the live O2sensor voltage, they oscillate constantly (close loop). I feel that I'm missing some thing here, can you please shed some lights on this ?
Thanks again
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From: So.Cal
98 E430
That should be normal all narrowband O2 reads 0v-1v. In Closed loop, the ECU is constantly trying to keep a specified AFR. That is why it keeps going .15v to .96v and vis versa.
If you want a good consistant AFR reading you can put in a Wideband O2 sensor + Gauge that support Wideband. Usually this runs 600-800+
For critical race application this is worth while.
Usually EGT is only available on turbo'd application, since it's critical to know the temp. But that doesn't mean you can't add your own EGT gauge. Most of the MB non-turbo only has oil, air, and coolant temp sensors.
If you want a good consistant AFR reading you can put in a Wideband O2 sensor + Gauge that support Wideband. Usually this runs 600-800+
For critical race application this is worth while.
Usually EGT is only available on turbo'd application, since it's critical to know the temp. But that doesn't mean you can't add your own EGT gauge. Most of the MB non-turbo only has oil, air, and coolant temp sensors.
Last edited by Turbo][; May 17, 2003 at 02:13 AM.
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nong-
O2 sensors are temp depenent in the sense that they need to be 650 F before they work accurately. This temp is normally met within the first several seconds of operation by means of a heating element inside the O2 sensor. MBZ also utilizes an air injection system and a lean run map for the first 100 seconds after an initial cold start to insure the feedback system is up to temp.
In any case, once warm you will not see a large variation in O2 sensor accuracy based on EGT. EGT is yet another telltale of the combustion process and can be of great value for turbo engine tuning.
As Turbo][ mentioned, the O2 sensors in your car are "narrow" band sensors, they cannot measure super rich or lean mixtures. Example: a 12:1 ratio results in a 1100mv reading, this is the "top" of the sensors range. A 10:1 reading would give the same reading. A "wide" band sensor can read ratios outside the normal range.
You need to operate your vehicle in a range where it is out of closed loop to see a steady sensor reading. Your car will never go into open loop standing still. You need a load- go drive on the road at WOT and check again.
O2 sensors are temp depenent in the sense that they need to be 650 F before they work accurately. This temp is normally met within the first several seconds of operation by means of a heating element inside the O2 sensor. MBZ also utilizes an air injection system and a lean run map for the first 100 seconds after an initial cold start to insure the feedback system is up to temp.
In any case, once warm you will not see a large variation in O2 sensor accuracy based on EGT. EGT is yet another telltale of the combustion process and can be of great value for turbo engine tuning.
As Turbo][ mentioned, the O2 sensors in your car are "narrow" band sensors, they cannot measure super rich or lean mixtures. Example: a 12:1 ratio results in a 1100mv reading, this is the "top" of the sensors range. A 10:1 reading would give the same reading. A "wide" band sensor can read ratios outside the normal range.
You need to operate your vehicle in a range where it is out of closed loop to see a steady sensor reading. Your car will never go into open loop standing still. You need a load- go drive on the road at WOT and check again.
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Kleemann,
Message received and understood...
Just one last quick question, if I were to hook up the scan tool to my MB and run WOT on open road, what O2 voltage should I be looking for ? (something in the range of 0.8V ?)
Thanks again. You have been utmost helpful.
Message received and understood...
Just one last quick question, if I were to hook up the scan tool to my MB and run WOT on open road, what O2 voltage should I be looking for ? (something in the range of 0.8V ?)
Thanks again. You have been utmost helpful.
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From: So.Cal
98 E430
Originally posted by KLEEMANN
You need to operate your vehicle in a range where it is out of closed loop to see a steady sensor reading. Your car will never go into open loop standing still. You need a load- go drive on the road at WOT and check again.
You need to operate your vehicle in a range where it is out of closed loop to see a steady sensor reading. Your car will never go into open loop standing still. You need a load- go drive on the road at WOT and check again.
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Kleemann
(1) I have W203 (203.045) C200 Kompressor with Kleemann's pulley. I think the OS is Siemens SIM4 h/w ver. 44/00 s/w ver. 46/00. Should I be looking for 0.915v ???
(2) Just purchased a W211 (E320), have not hooked up with the scan tool yet, I'm guessing it should be ME2.8 ??? This is the one that I'm going to install the Kleemann Kompressor and hence all the questions regarding the A/F ratio.
Thanks
(1) I have W203 (203.045) C200 Kompressor with Kleemann's pulley. I think the OS is Siemens SIM4 h/w ver. 44/00 s/w ver. 46/00. Should I be looking for 0.915v ???
(2) Just purchased a W211 (E320), have not hooked up with the scan tool yet, I'm guessing it should be ME2.8 ??? This is the one that I'm going to install the Kleemann Kompressor and hence all the questions regarding the A/F ratio.
Thanks
