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Staro 06-13-2008, 13:48   #1 (permalink)
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Audi R8 V12 TDI Concept

Prije samo pet godina, na spominjanje dizelskih motora, stručnjaci Ferrarija i Porschea odmahnuli bi rukama. No, u međuvremenu je Audi u Le Mans, nakon godina dominacije s benzinskim prototipovima, došao s bolidom pogonjenim plinskim uljem i pobijedio. Nijemci su imali hrabrosti i znanja složiti trkaći stroj s dizelskim motorom, koji je zavladao legendarnom utrkom.

Iskustvo stečeno na jednoj od najzahtjevnijih utrka, ohrabrilo ih je da civilnu verziju spektakularnog 6-litrenog dizelskog motora V12 TDI ugrade u Q7. Rezultat je bio impresivan, no zasad je Q7, s top-gun dizelašem, ostao prototip. Wolfgang Hatz, šef razvoja Audijevih motora, nije se s time zadovoljio. S timom stručnjaka uspio je utišati i umiriti motor, a potom nagovoriti šefove da mu dozvole realizaciju prototipa, na osnovi čistokrvnog bolida R8. Led je probijen na salonu automobila u New Yorku te je Audi predstavio R8 s turbodizelskim motorom. Amerikanci, koji još nisu prihvatili dizelske motore u obiteljskim automobilima, a kamo li u supersportskim, doživjeli su šok.

R8 V12 TDI je joker kojim Audi cilja na sam vrh među supersportskim automobilima. Uz očaravajući interpretaciju koncepta GT automobila, jedna od uzdanica je i vrhunska tehnologija. Karoserija je načinjena od aluminija i magnezija, kočni diskovi su keramički, a motor usklađen s normom Euro 6, koja na snagu stupa 2014. Na staklenom krovu izdubljen je utor za dodatni dotok zraka, koji odvojenim kanalima putuje prema glavama motora V12 TDI, vidljivog ispod staklenog pokrova, kao u izlogu.

Prvo je iznenađenje lakoća s kojom se pokreće R8, zahvaljujući ogromnom momentu, koji je na raspolaganju već ispod 2000 okretaja. Upravljač je gotovo izravan, a pri podizanju okretaja, javlja se motor svojim metalnim, ali prilično utišanim zvukom. Izmjena stupnjeva popraćena je glasnim škljocanjem, pri svakom pomaku kroz metalnu rešetku. Ubrzanje je stravično, u prvi mah čini se da motor ima i više od 500 konja, ali istodobno je spreman za laganu promenadu u šestoj, na tisuću okretaja. Nevjerojatno je gledati kazaljku na samo 2000 okretaja i istodobno osjećati siloviti potisak motora. Sudbina R8 V12 TDI zasada nije određena, no, Ferrari i Porsche su upozoreni...
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Staro 06-13-2008, 14:05   #2 (permalink)
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Staro 06-23-2008, 10:40   #3 (permalink)
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Staro 06-23-2008, 19:25   #4 (permalink)
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A prije 10 god je engleski casopis EVO prognozirao dolazak dizelaša medu superaute. Audi ima pozadinu okretomjera i brzinomjera kojoj se mjenja ovisno o postavi (Racing,...)
Kad smo kod dizela cijene za benzin danas opet porasle (za 15 lipa)
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Staro 08-05-2008, 22:24   #5 (permalink)
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Diesel = zakon
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