Mota yopukutira imayendetsedwa ndi mota, ndipo kuyenda kozungulira kwa mota kumasinthidwa kukhala kuyenda kobwerezabwereza kwa mkono wopukutira kudzera mu njira yolumikizira ndodo, kuti ntchito yopukutira igwire ntchito. Nthawi zambiri, mota imatha kulumikizidwa kuti chopukutira chigwire ntchito. Posankha liwiro lalikulu komanso liwiro lotsika, mphamvu yamagetsi ya mota imatha kusinthidwa, kuti ilamulire liwiro la mota kenako ilamulire liwiro la mkono wopukutira. Mota yopukutira imagwiritsa ntchito kapangidwe ka burashi katatu kuti ithandize kusintha liwiro. Nthawi yosinthasintha imayendetsedwa ndi chopukutira chosinthasintha, ndipo chopukutira chimakokedwa malinga ndi nthawi inayake ndi ntchito yochapira ndi kutulutsa mphamvu ya chosinthira chobwerera cha mota ndi mphamvu yolimbana ndi chopukutira.
Kumbuyo kwa injini ya wiper kuli giya yaying'ono yolumikizira yomwe ili m'nyumba yomweyo, zomwe zimachepetsa liwiro lotulutsa kufika pa liwiro lofunikira. Chipangizochi chimadziwika kuti wiper drive assembly. Chotsitsa chotulutsa cha msonkhanocho chimalumikizidwa ndi chipangizo chamakina cha kumapeto kwa wiper, chomwe chimapangitsa kuti wiper isinthe mozungulira kudzera mu fork drive ndi kubwerera kwa spring.
Tsamba lopukuta ndi chida chochotsera mvula ndi dothi mwachindunji kuchokera mugalasi. Chingwe cha rabara chokokera chimakanikizidwa pamwamba pagalasi kudzera mu kasupe, ndipo mlomo wake uyenera kukhala wogwirizana ndi Ngodya yagalasi kuti ukwaniritse magwiridwe antchito ofunikira. Kawirikawiri, pali chopukuta pa chogwirira cha switch yophatikiza magalimoto kuti chiwongolere kupotoka, ndipo pali magiya atatu: liwiro lotsika, liwiro lapamwamba komanso losinthasintha. Pamwamba pa chogwirira pali kiyi yosinthira ya scrubber. Chosinthira chikakanizidwa, madzi ochapira adzatuluka, ndipo galasi lakumbuyo la zida zotsukira zidzagwirizana.
Chofunikira cha injini ya wiper ndi chapamwamba kwambiri. Imagwiritsa ntchito mota ya DC permanent magnet. Wiper motor yomwe imayikidwa pagalasi lakutsogolo nthawi zambiri imagwirizanitsidwa ndi gawo la makina a nyongolotsi ndi nyongolotsi. Ntchito ya nyongolotsi ndi makina a nyongolotsi ndikuchepetsa liwiro ndikuwonjezera torsion. Shaft yake yotulutsa imayendetsa makina a four-link, omwe kudzera mwa iwo kayendedwe kozungulira kosalekeza kamasinthidwa kukhala kayendedwe ka swing kochokera kumanzere kupita kumanja.
