Yawancin manyan silinda suna da ƙirar “tandem” (wani lokaci ana kiranta silinda mai dual master).
A cikin babban silinda na tandem, ana haɗa manyan silinda guda biyu a cikin gida ɗaya, suna raba bututun silinda gama gari.Wannan yana ba da damar taron Silinda don sarrafa nau'ikan nau'ikan nau'ikan nau'ikan ruwa guda biyu.
Kowane ɗayan waɗannan da'irori yana sarrafa birki don ƙafafun ƙafa biyu.
Tsarin kewaye zai iya zama:
● Gaba/baya (gaba biyu da baya biyu)
● Diagonal (hagu-gaba/ dama-baya da dama-gaba/hagu-baya)
Ta wannan hanyar, idan da'irar birki ɗaya ta gaza, ɗayan da'irar (wanda ke sarrafa ɗayan biyu) na iya dakatar da abin hawa.
Hakanan akwai bawul mai daidaitawa a yawancin abubuwan hawa, yana haɗa babban silinda zuwa sauran tsarin birki.Yana sarrafa rarraba matsa lamba tsakanin birki na gaba da na baya don daidaito, ingantaccen aikin birki.
Babban tafki na silinda yana saman babban silinda.Dole ne a cika shi da kyau da ruwan birki don hana iska shiga tsarin birki.
Ga abin da ke faruwa a cikin babban silinda lokacin da kuka danna kan fedar birki:
● Matsakaicin turawa yana motsa fistan na farko don matsa ruwan birki a kewayensa
● Yayin da fistan na farko ke motsawa, matsa lamba na hydraulic yana ginawa a cikin silinda da layukan birki
● Wannan matsa lamba yana motsa fistan na biyu don matsa ruwan birki a kewayensa
Ruwan birki yana motsawa ta cikin layin birki, yana shigar da injin birki
Lokacin da kuka saki fedar birki, maɓuɓɓugan ruwa suna mayar da kowane piston zuwa wurin farko.
Wannan yana sauke matsin lamba a cikin tsarin kuma yana kwance birki.
Lokacin aikawa: Fabrairu-22-2023