Moteri ya Wankel izahora ihujwe na Mazda. Iyi marike niyo yakuze, hafi ya yose, mumyaka mirongo itanu ishize. Muri iki cyumweru kandi hizihizwa imyaka 50 uhereye igihe hatangiriye kumenyekanisha isoko rya Mazda Cosmo Sport (110S hanze y’Ubuyapani), iyo ikaba atari yo modoka yambere ya siporo y’Abayapani gusa, ahubwo yari na moderi ya mbere yakoresheje moteri izunguruka ifite rotor ebyiri.
Cosmo yaje gusobanura igice cyingenzi cya ADN. Yabanjirije moderi nkibishushanyo nka Mazda RX-7 cyangwa MX-5. Mazda Cosmo Sport yari umuhanda ufite imyubakire ya kera: moteri ndende ndende na moteri yinyuma. Wankel yahuye niyi moderi yari impanga-rotor ifite cm 982 cm3 hamwe nimbaraga 110 zinguvu, yazamutse igera kuri hp 130 hamwe nogutangiza, nyuma yumwaka, murukurikirane rwa kabiri rwicyitegererezo.
Imashini ya Wankel
Ibibazo bikomeye byagombaga kuneshwa kugirango Wankel ibe inyubako nziza. Kugirango bagaragaze ko ikoranabuhanga rishya ryizewe, Mazda yahisemo kwitabira Cosmo Sport, mu 1968, muri rimwe mu masiganwa akomeye mu Burayi, amasaha 84 - Ndabisubiramo -, Amasaha 84 Marathon de la Route kumuzunguruko wa Nürburgring.
Mu bitabiriye 58 harimo Mazda Cosmo Sport ebyiri, zisanzwe zisanzwe, zigarukira ku mbaraga za 130 kugira ngo zirambe. Umwe muribo yageze kurangiza, arangiza kumwanya wa 4. Undi yavuye mu irushanwa, bitatewe no kunanirwa na moteri, ahubwo byatewe n'umutwe wangiritse nyuma y'amasaha 82 mu isiganwa.
Cosmo Sport yari ifite umusaruro wibice 1176 gusa, ariko ingaruka zayo kuri Mazda na moteri zizunguruka byari bikomeye. Mu bakora inganda zose zaguze impushya muri NSU - uruganda rukora amamodoka na moto mu Budage - gukoresha no guteza imbere ikoranabuhanga, gusa Mazda yabonye intsinzi mu kuyikoresha.
Iyi moderi niyo yatangije ihinduka rya Mazda kuva mubikorwa rusange bikora amamodoka mato n’imodoka zubucuruzi bikagera kuri kimwe mu bicuruzwa bishimishije mu nganda. No muri iki gihe, Mazda irwanya amasezerano mu buhanga no mu buhanga, nta gutinya kugerageza. Haba kubijyanye na tekinoroji - nka SKYACTIV iheruka - cyangwa kubicuruzwa - nka MX-5, yagaruye neza igitekerezo cya siporo ntoya kandi ihendutse yo muri za 60.
Kazoza ka Wankel kazoza ki?
Mazda yakoze imodoka zigera kuri miriyoni ebyiri zifite ingufu za Wankel. Kandi yakoze amateka nabo hamwe mumarushanwa. Kuva kuganza shampiona ya IMSA hamwe na RX-7 (muri za 1980) kugeza kunesha byimazeyo mumasaha 24 ya Le Mans (1991) hamwe na 787B. Icyitegererezo gifite moteri enye, zose hamwe litiro 2,6, zishobora gutanga imbaraga zirenga 700. 787B yanditswe mumateka gusa kuba imodoka ya mbere ya Aziya yatsinze isiganwa ryamamare, ariko kandi yambere ifite moteri izunguruka kugirango igere kubikorwa nkibi.
Nyuma yo kurangiza umusaruro wa Mazda RX-8 muri 2012, ntakindi cyifuzo kuri ubu bwoko bwa moteri mubirango. Kugaruka kwe byatangajwe kandi ahakana inshuro nyinshi. Ariko, bisa nkaho ariho ushobora gusubira (reba umurongo uri hejuru).
