I-Wood Head Cam: Eyodwa noma Ekabili

Ukusatshalaliswa kwezinjini ezi-4-stroke Ingxenye 2

Ngesonto eledlule sibone izindlela zokulawula ama-valve kanye nokuvela kwazo ezinhlelweni ezisebenza kahle kakhulu. Manje ake sibheke i-Dual ACT, okwamanje eyinjini ye-valve eyi-quintessential.

Sya kubalamuli...

Naphezu kokubonakala kwe-camshaft engaphezulu, kusekhona imithambeka yokulawula i-valve, engalungile. Ngokubeka ama-camshaft ama-2 ngaphezu kwamavalvu, angasebenza nomuntu ophakathi nendawo omncane noma angabikho nhlobo. Umbono owethulwe ekuqaleni kwekhulu lama-20, eminyakeni eyikhulu edlule. Itemu elihumushela kwisifinyezo se-DOHC ngesiNgisi ngokuthi "I-Dual Overhead Camshaft".

Isiginesha: Enjinini ye-ACT ekabili, amakhamera asebenzisa ama-valve esebenzisa ompompi ngaphandle kokusebenzisa amaloli okulahla.

Kukhona abaphusha...

Kodwa-ke, ukungabi khona kwesiqephu esiphakathi akuphelele, njengoba kubalulekile ukulungisa imvume ye-valve (bheka ifreyimu). Ngakho-ke, ompompi bamapuleti aminyene bafakwa ukuze kulungiswe ukucaciswa. Kodwa amandla engeziwe esiwafunayo, ayanda futhi ngenxa yalokho ngokushesha ukwenzeka kwe-camshaft. Ingxenye esusa indawo yokuxhumana ye-cam / thrust. Futhi lapho uhamba ngokushesha, kuyanda lokhu kunyakaza, ngakho-ke ubukhulu be-pusher kufanele bube bukhulu. Ngenxa yalokho, kuba nzima !!! Sihogo, yilokhu kanye ebesifuna ukukugwema ngokususa i-rocker. Sihamba siyindilinga.

Ithebhulethi yokulungisa

Ipuleti lokulungisa liphumela kusibambo esimnyama (ekugcineni kwe-screwdriver). Ingaphinde ifakwe ngaphansi kwayo, bese ilula, kodwa i-camshaft kufanele isuswe ukuze ifakwe esikhundleni sayo, okwenza kube nzima ukulungisa.

Uthi linget?

Ngakho-ke, isisombululo siwukusebenzisa izinsimbi ezincane eziyindilinga ezikhulisa ukugudluka kwamavalvu ngaphandle kokutshekisa kakhulu. Ngenxa yendawo yokuxhumana eyindilinga, ukunyakaza kwendawo yokuxhumana kuyancishiswa, okunciphisa izingxenye futhi kuzuza isisindo. Nakhu okungaphezulu kokuphezulu, okungatholakala ku-F1, emabhayisikili e-GP kanye namabhayisikili okukhiqiza enza phezulu (njenge-BMW S 1000 RR) ...

Njengoba iphakathi kwe-camshaft namavalvu, ama-lingivators asusa induku yokuphusha futhi alondoloze amagremu abalulekile okusabalalisa izinjini ezisebenza kahle kakhulu.

Yini okulandelayo?

Ungakwazi yini ukwenza kangcono kunohlelo lwe-ACT oluphindwe kabili? Yebo futhi cha, ngoba namuhla zonke izikhathi ezine zokusebenza okuphezulu zisebenzisa lobu buchwepheshe. Kodwa-ke, uma i-ACTs ingasuswa, iziphethu ezakha isithende se-Achilles somshini ziyasuswa. Ukuze ubone amasistimu akho esebenza, kusadingeka ubheke isithuthuthu sika-GP, ifomula yokuqala ... noma umgwaqo! Ngempela, ukuzungeza ukwethuka kwe-valve okukhulunywe ngayo ngenyanga edlule, iziphethu zithathelwa indawo ama-rocker asebenza ngomshini, njengoba kwenza i-Ducati nge-Desmo, noma izinhlelo zokubuya zomoya. Uhlobo lwenguqulo yokumiswa kwe-Fournalès esetshenziswa enjinini. Ngeke kusaba nokuphuka kwentwasahlobo, akusekho ukwethuka, isisindo esincane futhi ekugcineni umkhiqizo owengeziwe. Kunikezelwe ngesivinini esiphezulu kakhulu (17/20 rpm). Kodwa-ke, izophinde isekele "imithetho eqinile" yamakhamera asebenza ngezindlela eziphansi.

inganekwane: Ukuziphendukela kwemvelo kokugcina ekusabalaliseni: ukukhumbula umoya. Ishintsha isiphethu semishini ngesilinda esigcwele umoya onomfutho.

Ibhokisi: Kungani ulungisa ukuphuma kwe-valve?

Ngokuhamba kwesikhathi, umthelela we-valve ngokumelene nesihlalo ekugcineni uholela ekuxazululeni. Lokhu kuholela ekwehliseni kancane kancane kwe-valve ekhanda lesilinda. Eqinisweni, isiqu siyaphakanyiswa futhi igebe lokuqala liyancishiswa kuze kube yilapho linyamalala ngokuphelele. Ngenxa yalokho, i-valve, enwebeka ngokushisa, ihlale icindezelwa ku-camshaft futhi ayisawuvali umgudu womoya ngokuphelele. Ngaphansi kwalezi zimo, ingxube iyabaleka ngesikhathi sokusha, ishisa isihlalo, esiguga ngokushesha futhi singangeni manzi kancane ... Ngaphezu kokuthi i-valve ayisahlali esihlalweni, akusekho ukuxhumana nomhlaba ongaphandle ukuze kuphume. amakhalori. Ngakho kushisa nakakhulu. Ukusebenza kwenjini kuyawohloka, ukusetshenziswa nokungcola kuyanda ngesikhathi esisodwa. Ukuqala okubandayo nakho kuba nzima kakhulu. Ngesikhathi esifanayo, ukungqubuzana okuqhubekayo kwama-tappets ku-camshaft kubangela ukugqoka ekusabalaliseni, okuzogcina kubophezele. Khona-ke kuyadingeka ukufaka esikhundleni se-pushers kanye ne-camshaft .... Kungcono ukulungisa ukudlala kuma-valve ngaphambi kokuba inkathazo iqale!