Fig. 317. The oxygen gauge of engine Zetec-SE is directly on a final collector under the heat-shielding screen

The oxygen gauge a ljambda-probe is established on car Focus directly on a final collector (fig. 317). To lower time for measurement, the oxygen gauge has additional electric heating. The Ljambda-probe measures concentration of oxygen in the fulfilled gases. Signals from the gauge arrive in the electronic block of management. Depending on them the management block influences structure of a working mix (poor or rich).