Bayan zazzabi mai raguwa, wanda Cayman da Boxster suka canza zuwa injunan damben turbo guda huɗu, Porsche ya ɗauki mataki baya kuma ya yanke shawara kawai mai hankali: Komawa zuwa damben silinda shida da injunan yanayi a cikin 718 Cayman GTS da 718 Boxster GTS.
Zaɓin ba zai iya zama mafi kyau ba. An ƙaddamar da wannan sabon rukunin akan 718 Cayman GT4 da 718 Spyder, kuma kodayake GTS yana da ƙasa da 20 hp, ba ƙaramin ɗaukaka bane: 400 hp a 7000 rpm, mai iyaka a 7800 rpm, kuma mafi arziƙi, ƙarin sautin kiɗa, ƙari. mai maye, tare da ɗayan mafi kyawun kwalayen hannu a cikin masana'antar (ko da yake dangantakar ta ɗan ɗan tsayi).
Diogo shine mai masaukinku a cikin wannan tuntuɓar farko tare da 4.0 l na yanayi shida-Silinda dambe, anan an ɗora kan 718 Boxster GTS - tare da ja da baya, sautin lebur-shida a bayan baya kawai yana ƙoƙarin haɓakawa. Ku san shi dalla-dalla.
Me yasa ake komawa yanayin yanayi?
So ko a'a, gaskiyar ita ce, a matsayinka na gabaɗaya, canzawa zuwa ƙananan injunan turbo waɗanda ba sa buƙatar yin sulhu da ƙimar wutar lantarki na iya kawo fa'ida a cikin amfani / fitarwa.Biyan kuɗi zuwa wasiƙarmu
Amma duk da wannan fa'ida ta zahiri, akwai ƙarin korau fiye da muryoyi masu kyau game da gabatarwar sabon ɗan dambe turbo huɗu-Silinda a cikin Cayman da Boxster. Ƙananan amfani da hayaki ba su da isasshen gardama don ramawa ga asarar layi / ci gaba, kuma sama da duka, sautin da ke hade da silinda na yanayi shida.
Batun kuma shine cewa silinda shida na yanayi ya fi kyawawa fiye da turbo hudu-Silinda, aƙalla lokacin da ake magana akan 718 Boxster GTS da nau'in nau'in ɗan adam (Cayman).
Abokin ciniki koyaushe yana da gaskiya, ba haka suke faɗi ba? Don haka, Porsche ta yanke shawarar fara buƙatar yin yuwuwar dawo da ɗan damben yanayi mai silinda shida. Duk da m iya aiki na 4.0 l, wannan ba daya naúrar da muka samu a cikin na musamman 911 GT3 da 911 GT3 RS - Porsche halitta wani sabon naúrar samu daga 3.0 twin-turbo amfani a cikin 911.
Neman asarar inganci
Babban ƙarfin 4.0 l shine duk abin da ake buƙata don tabbatar da matakan ƙarfi da ƙarfin ƙarfi waɗanda ke yin gasa tare da ɗan damben 2.5 Turbo hudu-Silinda ya maye gurbinsa. Koyaya, dole ne a kiyaye inganci duk da samun ƙarin silinda biyu da ƙarin 1500 cm3.
Don cimma wannan, ɗaya daga cikin matakan da aka gabatar shine kashe silinda, wato, lokacin da yake cikin ƙananan kaya, ɗayan benci na ɗan dambe yana "kashe". Tsakanin 1600 rpm da 2500 rpm a cikin GTS (1600-3000 rpm a cikin GT4/Spyder) ko kuma lokacin da ba kwa buƙatar fiye da 100 Nm don kiyaye wani takamaiman gudu, akwai allurar mai da aka yanke a ɗayan benci.
Ana kiyaye wannan yanke allura har zuwa 20s, musanyawa zuwa sauran benci, wanda ke ba da damar adana abubuwan haɓakawa a yanayin zafin aiki mai kyau. Wannan maganin yana ba da damar rage fitar da CO2 ta kusan 11 g/km.
Wani ma'aunin da aka gabatar shine yin amfani da allurar piezo, wanda a cewar Porsche, sune farkon da aka fara amfani da su a cikin injunan alluran kai tsaye masu karfin juyi mai tsayi - 7800 rpm a cikin GTS, 8000 rpm a cikin GT4/Spyder. Mafi tsada fiye da masu allura na al'ada, kuma suna da saurin amsawa, kuma sun fi dacewa.
Da yake suna da sauri, ana iya raba allurar mai guda ɗaya a kowane zagaye na konewa zuwa ƙananan allurar mai guda biyar. Amfaninsa sun fi bayyana a ƙananan kaya / matsakaici, yana ba da iko mafi girma yayin allurar mai da ingantaccen cakuda mai-iska, wanda kuma yana rage hayaki.
A ƙarshe, Porsche ya kuma sanye take da sabon ɗan damben yanayi mai silinda shida tare da abubuwan tacewa - injunan alluran mai kai tsaye suma sun nuna kansu a matsayin manyan masu kera.