Other

Xavier Laprada

Pierre J Gele

Bernard R Laprade

A method and device for regulating the composition of a fuel air mixture supplied to an internal combustion engine by means of a valve in a secondary air inlet opening into the intake pipe of the internal combustion engine. A detector measures the composition of the exhaust gas and supplies a signal proportional to the oxygen or carbon monoxide content of the gas, this signal is compared with a stabilized voltage, the difference thus obtained is compared with a signal consisting of triangular pulses of a fixed amplitude and the signal thus obtained is used to control the valve after amplification, the duration of the signal defining the time of opening of the valve.

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64 260 Arudy, France

Xavier Laprada