Dual kewaye sanyaya
A cikin injuna na zamani, tsarin sanyaya na iya zama daidai da tsarin birki, wato, ya kasu kashi biyu.
Daya shine da'irar sanyaya da'ira na Silinda kuma ɗayan shine da'irar sanyaya shugaban silinda. A sakamakon wannan rabo, wani ɓangare na ruwa (kimanin. 
kashi daya bisa uku) yana gudana ta jikin sashin wutar lantarki, saura kuma ta kai. Ana sarrafa magudanar ruwa ta hanyar thermostats biyu. Ɗayan yana da alhakin kwararar ruwa ta hanyar toshewar injin, ɗayan kuma don gudana ta kai. Ana iya sanya su duka biyun thermostat a cikin gidaje na gama gari ko dabam.
Ka'idar aiki na thermostats shine kamar haka. Har zuwa wani yanayi mai zafi (misali, digiri 90 na ma'aunin celcius), duka biyun ana rufe su ta yadda injin zai iya dumama da sauri. Daga digiri 90 zuwa, misali, ma'aunin Celsius 105, ma'aunin zafi da sanyio da ke da alhakin wucewar ruwa ta kai a buɗe yake. Don haka, ana kiyaye zafin kai a digiri 90 a ma'aunin celcius, yayin da zafin da ke kan silinda a wannan lokacin zai iya ci gaba da hauhawa. Sama da ma'aunin Celsius 105, duka thermostats a buɗe suke. Godiya ga wannan, ana kiyaye zafin jiki na warhead a digiri 90, kuma zafin jiki na 105 digiri.
Rarrabe sanyaya na Silinda kai da Silinda toshe yana ba da wasu fa'idodi. Sanyin kai yana rage ƙwanƙwasawa, kuma yawan zafin jiki yana rage asarar gogayya saboda hauhawar yanayin mai.
