Pro-Tune
Crook Garage Services
Pro-Tune
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Oxygen
/ Lambda sensor
Modern
engine management system need a way to monitor the amount of fuel that is
injected into the engine, so by putting a lambda sensor in the exhaust system to
monitor the oxygen content that is present in the exhaust gasses. Lambda
sensors work by sensing the amount of o2 in the exhaust gases and converting
this to a readable voltage for the engine control unit (ECU) to convert into
more or less fuel that is injected into the engine. the correct amount is known
as lambda 1 or 14.75:1 fuel ratio, this is also called stoichiometric. the O2 sensor try's to
keep the O2 in the exhaust gases between 0.97 to 1.03 lambda. Most
lambda / oxygen sensors that is used on cars today have four wires to them but
there is sensors with one two or three wires as well. The
sensor will not start to work until it heats up to about 300 degrees. With the
three and four wire sensor, this has its own heater built in that speeds up its
operation and allows it to be placed further away form the exhaust manifold. Once
up to temperature and sensing exhaust gasses it generates its own voltage as the
oxygen content of the exhaust gases change.
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Every effort has been made to make this site as up to date and true as possible, but details and prices may change without notice
40 West Road, Crook, Co Durham, England DL15 9PW. Tel.
01388 764925
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