Domin kiyaye ingantacciyar daidaituwa da rata mai dacewa tsakanin piston da bangon silinda a yanayin aiki na yau da kullun da kuma tabbatar da aikin yau da kullun na piston, ƙirar tsarin piston yawanci yana da halaye masu zuwa.1. Yi siffar oval a gaba. Don yin ɓangarorin biyu na siket ɗin ɗaukar matsi na iskar gas kuma kiyaye ƙaramin rata mai aminci tare da silinda, ana buƙatar piston ya zama cylindrical lokacin aiki. Duk da haka, saboda kaurin siket ɗin piston ba daidai ba ne, ƙarfe na rami na kujerar piston yana da kauri, kuma adadin faɗaɗawar thermal yana da girma, kuma adadin nakasar tare da axis na kujerar fil ɗin piston ya fi na ciki. sauran kwatance. Bugu da ƙari, siket ɗin yana ƙarƙashin aikin matsi na gefen gas, wanda ke haifar da nakasar axial na fil ɗin piston ya zama mafi girma fiye da madaidaiciyar fil fil. Ta haka ne idan siket ɗin fistan ɗin ya kasance madauwari a lokacin sanyi, piston ɗin zai zama ellipse lokacin da yake aiki, wanda zai sa tazarar dawafi tsakanin fistan da silinda ba ta dace ba, wanda hakan zai sa piston ya matse a cikin silinda da inji ba zai iya aiki kullum. Sabili da haka, an kafa siket ɗin piston a cikin siffar m a gaba yayin aiki. Dogon axis na ellipse yana daidai da kujerar fil, kuma gajeriyar axis yana tare da hanyar kujerar fil, ta yadda piston ya kusanci da'irar cikakke lokacin aiki.

2.An yi shi da siffa mai tako ko tafe a gaba. Zazzabi na fistan tare da tsayin shugabanci ba daidai ba ne. Zazzabi na fistan ya fi girma a ɓangaren sama da ƙasa a ƙananan ɓangaren, kuma adadin faɗaɗa ya fi girma daidai a ɓangaren babba kuma ƙarami a ƙananan sashi. Domin sanya manyan diamita na fistan su kasance daidai yayin aiki, wato, cylindrical, dole ne a riga an yi fistan zuwa siffa mai tako ko mazugi mai ƙaramin babba da babba babba.

3.Slotted fistan siket. Don rage zafi na siket ɗin piston, yawanci ana buɗe tsagi mai rufe zafi a kwance a cikin siket. Domin rama lalacewar siket bayan dumama, an buɗe siket tare da tsagi mai tsayi mai tsayi. Siffar tsagi tana da tsagi mai siffar T.

Gabaɗaya ana buɗe tsagi na kwance a ƙarƙashin tsagi na zobe na gaba, a ɓangarorin fil ɗin a saman gefen siket (kuma a cikin ramin zoben mai) don rage zafi daga kai zuwa siket, don haka ana kiran shi. da zafi rufi tsagi. Tsagi na tsaye zai sa siket ɗin ya kasance yana da wani nau'i na elasticity, ta yadda ratar da ke tsakanin fistan da silinda ya zama ƙanƙanta kamar yadda zai yiwu lokacin da aka haɗa piston, kuma yana da sakamako na diyya lokacin da yake zafi, don haka piston ba za a makale a cikin Silinda ba, don haka ana kiran tsagi na tsaye Don tankin faɗaɗa. Bayan siket ɗin ya rame a tsaye, tsaurin gefen ramin zai zama ƙarami. A lokacin taro, ya kamata a kasance a gefen inda aka rage yawan matsa lamba a yayin aikin bugun jini. Piston na injin dizal yana ɗaukar ƙarfi da yawa. Bangaren siket ba ya tsage.

4.Don rage ingancin wasu pistons, ana yin rami a cikin siket ko kuma an yanke wani ɓangaren siket a bangarorin biyu na siket don rage ƙarfin J inertia da rage nakasar thermal kusa da fil ɗin kujera zuwa fil. kafa fistan karusa ko guntun fistan . Siket na tsarin karusar yana da kyaun elasticity, ƙananan taro, da ƙananan madaidaicin yarda tsakanin piston da silinda, wanda ya dace da injunan sauri.

5.Don rage thermal fadada na aluminum gami piston siket, wasu fetur engine pistons an saka tare da Hengfan karfe a cikin piston skirt ko fil wurin zama. Siffar fasalin Hengfan karfe fistan shine cewa karfen Hengfan ya ƙunshi 33% nickel. 36% low-carbon iron-nickel gami yana da haɓaka haɓaka na kawai 1 /10 na na aluminum gami, kuma an haɗa fil ɗin fil ɗin zuwa siket ta takardar ƙarfe na Hengfan, wanda ke hana lalacewar haɓakar thermal. siket.

6. A kan wasu injunan man fetur, layin tsakiya na rami na piston yana karkata daga jirgin saman piston centerline, wanda aka kashe ta 1 zuwa 2 mm zuwa gefen aikin bugun jini wanda ke karɓar matsin lamba a babban gefen. Wannan tsarin yana ba fistan damar canzawa daga gefe ɗaya na Silinda zuwa wancan gefen Silinda daga bugun bugun jini zuwa bugun wuta, don rage sautin bugun. A lokacin shigarwa, ba za a iya jujjuya shugabanci mai banƙyama na fil ɗin piston ba, in ba haka ba ƙarfin jujjuyawar zai karu kuma siket ɗin za ta lalace.