About the article

Lambda Probe Readout for Carburettor Tuning

A lambda probe (or oxygen sensor) can be found on the exhaust system of most cars running on unleaded fuel. Having reached its normal operating temperature (of about 600 degrees Celcius!) the lambda probe supplies an output voltage proportional to the amount of residual oxygen measured in the exhaust gas. This information is indicative of, among others, the air/fuel ratio supplied by the carburettor(s) and hence the combustion efficiency. In modern car (and motorcycle) engines, this information is used to (electronically) adjust engine parameters like ignition timing and fuel injection.
Downloading of this magazine article is reserved for Elektor Members only.
Already a member? click here to log in.
Extra info, Update
In the circuit diagram, the anodes of D1-D10 should be shown as connected to +12 V.
Loading comments...