I-Fan clutch yi-fan ye-injini yokupholisa ye-thermostatic enokuthi i-freewheel kumaqondo aphantsi obushushu xa kungafunwa ukupholisa, ivumela i-injini ukuba ifudumale ngokukhawuleza, ikhulula umthwalo ongeyomfuneko kwi-injini. Njengoko amaqondo obushushu esanda, i-clutch ibandakanyeka ukuze ifeni iqhutywe ngamandla e-injini kwaye ihambisa umoya ukupholisa injini.
Xa i-injini ipholile okanye ikwiqondo lobushushu obuqhelekileyo bokusebenza, i-clutch yefeni ithi kancinane ikhuphe ifeni yokupholisa yeradiyetha eqhutywa ngoomatshini ye-injini, ehlala iphambi kwempompo yamanzi kwaye iqhutywa libhanti kunye nepuli eqhagamshelwe kwi-crankshaft ye-injini. Oku konga amandla, kuba injini akufuneki iqhube ngokupheleleyo fan.