r1_pete
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| posted on 10/12/08 at 07:21 PM |
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Lambda sensors, wideband narrowband, whats the difference?
Is it the obvious, a wideband sensor is able to measure a greater range of AFR's?
Planning my upgrade to efi, havent even got the car on the road yet......
[Edited on 10/12/08 by r1_pete]
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BenB
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| posted on 10/12/08 at 07:28 PM |
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Narrowband tells you when you're at stoich and which side of it you are when you're not (but not much else).
Wideband tells you figures so you can decide how rich or lean you want to run at points rather than just "rich" or "lean".
You rarely want to be at stoich and being able to control how rich or lean you are is a very useful thing....
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jambojeef
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| posted on 10/12/08 at 07:30 PM |
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A wideband has a more linear response to oxygen concentration providing a better indication of the burn when connected to a suitable output device.
Narrowband sensor response is almost switch-like with a very rapid change in voltage output around stoich.
Means that when used to tune an engine its more appropriate to use a narrow band sensor as a "check" that your tuning is about right
rather than a yarstick against how much map / carb adjustment is needed.
Geoff
Edt: Ben put it better than I ever could!
[Edited on 10/12/08 by jambojeef]
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r1_pete
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| posted on 10/12/08 at 07:30 PM |
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Thanks Chaps wide it is then.
[Edited on 10/12/08 by r1_pete]
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multanen
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| posted on 10/12/08 at 08:01 PM |
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Also, normal lambda sensor can be plugged in to just about any meter or device. Wide band lambda sensor needs a special controller unit instead (Tech
Edge 2J1 for example).
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