Isebenza kanjani i-fuel tank ventilation system?

Izihwamuko zikaphethiloli ezakha ethangini azikwazi ukuphunyuka. Ilawulwa isilawuli sesistimu yokungenisa umoya ethangini lamafutha.

Imihwamuko yamafutha eyingozi emvelweni ikhishwa ethangini iye esitsheni sekhabhoni esicushiwe, esimunca. Ukusuka lapho, ngesimo se-liquid, bangena ku-intake manifold. Umoya unikezwa ku-fuel vapor adsorber ukuze kukhululwe ikhabhoni ecushiwe kuphethiloli enqwabelene kuyo. Ingcindezi engalungile eyenziwe imunca uphethiloli emalahleni. Phakathi kwe-canister kanye ne-multifold intake kulayini wokuhlinzeka kune-valve yokulawula umhwamuko we-solenoid. Ngesikhathi sokusebenza kwenjini, isilawuli sithumela imimoya ethile kuyo, okuthi ngamazinga ahlukahlukene ithinte izinga lokuvuleka kwe-valve, elihumusha inani lomoya ngophethiloli okhishwe emalahleni.

I-valve ihlala ivaliwe lapho injini iqalwa. Icushwa kuphela uma iyunithi yokushayela isifinyelele izinga lokushisa elithile lokusebenza. Ukuvulwa kwe-valve yezikhathi ezithile nesikhathi sokuvula kunqunywa isilawuli ngokusekelwe kumasignali afana nokusuka ku-throttle position sensor kanye ne-lambda probe. Ukulawulwa kwe-valve kubhekisela kulokho okubizwa ngokuthi ama-adaptive systems, okusho ukuthi idivayisi yokulawula ivumelanisa imijikelezo yokuvula nokuvala i-valve ekushintsheni kwezimo zokusebenza kwenjini.

I-EOBD on-board diagnostic system ihlola ukusebenza kwe-fuel tank ventilation system. Ekuhlolweni kwe-capacitive, ukuvula i-valve, kuye ngokuthi izinga lokugcwaliswa kwe-canister nge-fuel vapor, kushintsha ukwakheka kwengxube. Lolu shintsho ku-lambda probe enhla nomfula wesiguquli se-catalytic luqinisekisa ukuthi uhlelo lokungenisa umoya ethangini likaphethiloli luyasebenza. Ngakolunye uhlangothi, ngesikhathi sokuhlolwa kwe-modulation ye-B, iyunithi yokulawula injini ivula ngokuzenzakalelayo futhi ivale kancane i-valve, ngenxa yalokho izinguquko ezenzekayo, i.e. thatha ukushintshashintsha kwengcindezi eminingi. Ikalwa ngenzwa yokucindezela futhi ngesisekelo salokhu, iyunithi yokulawula injini ihlola ukuphumelela kwesistimu yokuphefumula kwe-tank.