Rage zuwa diamita rabo

Wannan lamari ne mai mahimmanci a matakin ƙirar injin, wanda shine rabon bugun bugun fistan zuwa diamita na piston, wanda kuma ake kira rabon bugun jini-diamita.
Gabaɗaya, injuna masu sauri suna amfani da manyan pistons masu gajeriyar bugun jini, kuma injunan ƙananan gudu suna amfani da ƙananan pistons masu manyan bugun jini.
Koyaya, zaɓin madaidaicin kewayon diamita dole ne yayi la'akari da manufar ƙirar injin da makasudin haɓaka aikin.

Tasirin bugun piston akan aikin injin

Tare da ci gaba da saurin injin da bugun jini yana ƙaruwa, matsakaicin saurin piston zai ƙaru daidai gwargwado.
Matsakaicin gudun piston muhimmin siga ne wanda ke nuna matakin ƙarfafa injin.
Matsalolin da karuwar matsakaicin gudun piston ke haifarwa sune:
1. Rashin raguwa yana ƙaruwa, kuma aikin injiniya yana raguwa; nauyin thermal na taron piston yana ƙaruwa, kuma ana buƙatar juriya mai zafi da babban nauyin man fetur;
2. Ƙarfin inertial yana ƙaruwa, kuma girgizar injiniya da ƙara ƙara;
3. Yayin da iskar iskar da iskar shaye-shaye ke karuwa, juriyar shigar da iskar ta kara girma, wanda hakan zai rage ingancin hauhawar farashin kayayyaki.

Tasirin diamita na piston akan aikin injin

Babban diamita na piston zai ƙara yawan zafin jiki na silinda injin, pistons, kawunan silinda, bawuloli da sauran sassa.
Ana iyakance injinan mai ta hanyar ƙwanƙwasawa, kuma diamita na Silinda gabaɗaya baya wuce 100mm. Babu ƙananan iyaka ga diamita na silinda na injin mai.
Diamita na silinda na injunan diesel na kera yana tsakanin 80 zuwa 160 mm.

Zaɓin hanyar zuwa rabon diamita

Matsakaicin kewayon-zuwa diamita na injunan mai mai saurin gaske yana tsakanin 0.7 da 1.0.
Matsakaicin kewayon-zuwa diamita na injunan diesel gabaɗaya tsakanin 1.05 da 1.2. Matsakaicin matsi na injin dizal yana da girma kuma bugun piston ya fi tsayi.