The lambda gas control systems have been studied to manage electronically the gas feeding of vehicles equipped with lambda sonde and catalytic converter. These systems not requires any handle intervention to settle the air/gas mixture and the stechiometrical parameters stays unaltered by means of self-learning control unit.
The system is composed by a computer which receives and elaborates all the data coming from TPS, engine, lambda sonde and temperature sensor. According to the information received, the ECU send the right informations to the step motor, adjusting and ensuring a correct variation of air/gas mixture regulation.
A change-over switch, located in the cabin of the car, allows to select gas service or petrol service, and display the gas level in the tank.