--- wolemba Aaron Turpen pa 20-Mar-2015

Kodi Zizindikiro Zina Ndi Zotani?

Izi ndi Pansi ndi Pamwamba (zomwe zimatchedwanso Pamaso ndi Pambuyo) zizindikiro za TDC. Timawatchula kuti "kumanzere" ndi "kumanja" kwa chizindikiro chapakati chomwe chikuwoneka pamene mukuyang'ana kutsogolo kwa injini (pamene lamba ali), osati m'lingaliro lachikhalidwe la "kumanzere" kukhala mbali ya dalaivala chifukwa zizindikiro izi ndizolunjika injini, osati galimoto.
Chizindikiro cha Below Top Dead Center (BTDC) ndicho kumanzere ndipo chizindikiro cha ATDC ndi chakumanja. Izi ndi miyeso ya digiri ndipo ndizosiyana pang'ono kutengera injini yomwe ikufunsidwa.
Mwachitsanzo, pa silinda inayi yeniyeni, chizindikiro choyamba ndi 7.5-degrees patsogolo pa mutu wakufa pamwamba, zizindikiro zapakati ndi TDC, ndipo chizindikiro chakumanja ndi madigiri 5 pambuyo pa malo omwe ali pamwamba pa akufa. Apanso, ma degree awa amatha kusintha molingana ndi injini yomwe ikufunsidwa.
Mukasuntha nthawi yanu kuti igwirizane ndi chimodzi mwa zizindikiro zina, mukusintha nthawi ya valve ya galimotoyo. Ngati atachita mogwirizana ndi chipika cha injini (zizindikiro za crankshaft), izi zimatha kutulutsa RPM yotsika kapena yapamwamba pamwamba kapena kumapeto kuti apange mphamvu zambiri pama liwiro osiyanasiyana a injini. Kusuntha izi kumasintha kuchuluka kwa mphamvu zomwe injini ili nayo kumapeto (kuthamanga pang'onopang'ono) kapena kumtunda (kuthamanga kwambiri) kwa kuthamanga kapena kuthamanga.




Chifukwa Chiyani Musinthira Kugwirizana kwa ATDC kapena BTDC?
Nthawi ikasunthidwa kuti ikhale isanayambe kapena itatha pamwamba, imasintha momwe "otseguka" kapena "otsekedwa" silinda isanalowe mafuta ndi mpweya wosakaniza ndipo spark imayatsa. Izi, zimasintha kuchuluka kwa chipinda choyaka moto chomwe chimapezeka kuti chiwotchedwe, chomwe chimasintha kuchuluka kwa maulendo a pistoni omwe amakankhidwa ndi kuyaka kusiyana ndi injini. Kuchuluka kwa maulendo omwe amakankhidwa ndi kuwotcha, injiniyo imakhala yogwira mtima kwambiri, koma kutentha kwake: chiŵerengero cha maulendo chimasintha pa RPM zosiyanasiyana.
Pokonzekera kukhathamiritsa kwapang'onopang'ono kapena komaliza, makaniko akusankha kusiya kuchita bwino mbali imodzi mokomera ena. Poyang'ana mwachindunji ku TDC m'malo mwake, makinawo akukonzekera kuti azigwira bwino ntchito pamagulu onse - chifukwa chake injini zimachokera kufakitale ndi TDC monga nthawi yawo.

M'mainjini akale, kusintha nthawi kukhala BTDC kapena ATDC kumatanthauza kusintha wogawayo ndi imodzi yomwe idapangidwira nthawi yatsopanoyo. Zida zina za adaputala zilipo kwa injini zina zomwe zosinthazi zimatchuka, komabe, zomwe zimalola kuti zinthu za ogawa zisinthidwe m'malo mwa gawo lonse. Pamagalimoto amakono omwe amagwiritsa ntchito nthawi yamagetsi, kusintha kwa ATDC kapena BTDC nthawi zambiri kumangofuna "kompyuta reprogram" kuti isinthe nthawi ya spark/ignition.