Alfa Romeo Brera i Spider sa 1750 TBi i 2.0 JTDM motorima

[AlfistaNS]

Nakon Alfe 159 1750 TBi, novi 1,75 litarski turbo benzinac se našao i pod haubama Alfinih sportskih modela Brera i Spder, koji su takođe dobili i novi 2.0 JTDM turbo-dizelaš.
1750 TBi raspolaže sa 200KS i 320 Nm obrtnog momenta (dostupan već od 1400 o/min.), a sa njim oba modela postižu maksimalnih 235 km/h, dok ubrzanje do stotke kod Brere traje 7,7 sekundi a kod Spidera 7,8 ekundi (Brera inače sa ovim motorom emituje 189 grama CO2 po kilometru a Spider 192 grama).
Što se 2.0 JTDM motora tiče (zadovljava naravno Euro5 norme), on razvija 170KS i 360 Nm (pri 1750 o/min.), dovoljno za najveću brzinu od 218 km/h i ubrzanje do 100 km/h za 8,8 sekundi (Brera), odnosno 9 sekundi (Spider). Ovde i fabrički podatak da novi Sider 2.0 JTDM na 100 km prosečno troši samo 5,4 litara goriva.
Cene u Italiji izgledaju ovako: Alfa Brera 1750 TBi staje 29.800 evra, Alfa Brera 2.0 JTDM 31.600 evra, Alfa Spider 1750 TBi 31.800 evra a Alfa Spider 2.0 JTDM ima cenu od 33.600 evra.

http://auto.blog.co.yu/blog/auto/novite ... m-motorima

[Dejan]

Uh Brera, pa jos Bela

[speedfreak968]

ovaj 1750 tbi je definitivno motor buducnosti... kapa dole ...

[Mique]

Savrshena kombinacija !!!

[Flavio]

[ctrl alt del]

Uh Brera, pa jos Bela

Službena...

[Dragon]

Bio sam u Kraljevu na odmoru, a posto redovno pijem kafu pored Ibra, jednog dana me doceka...

[byMaX]

Jel zna neko gde mogu da se kupe ovakve felne... Lepo bi čučale na 159-tki!

[JaMaL]

voleo bih da vidim dyno tog motora... jos nisam cuo za motor koji postize 200ks ima obrtni moment od 320nm na 1400? rpma i moze da gura snagu do 6-7000? tako nesto ne postoji...

cak ni novi subaru motori koji su prvi poceli da koriste takve turbine ne mogu to da proizvedu, prave snagu na 5000 a obrtni moment na 2400... sa jos manjim turbom mozda se spusti nm na 1800 ali i snaga ce pasti na 4500 i nize... dobro dosli u svet benzinskih dizela...

iskreno se nadam da lupam gluposti i da taj motor nekom magijom pravi obrtni moment od 1400 do 6500 i 200ks na 6500... ali kapiram da od toga nema nista... sacekacemo neki dyno pa da vidimo... ali mi tako mali lag smrdi na veoma mali turbo koji brzo gubi dah i tehnicki pretvara benzinca u dizel...

@ByMax
a takve ili veoma slicne felne imas da nadjes po ebay-u... samo cene su... khm khm... 800e pocetna a stizu do 1500-1800e... to su 18"

[byMaX]

Znam da su 18-ice, a mislio sam na polovne

[Dragon]

Sta to znaci, da je pala 159? Video sam neku na polovnim automobilima.

[speedfreak968]

@jamal
Mrzi me da prevodim:

Under their fascinating and highly personal exterior, all Alfa Romeos offer a choice of superb engines, all packed with the latest technology and bursting with performance. Alfa Romeo engines are the perfect embodiment of the sporting soul that has always set the marque apart from the competition. The Alfa Romeo 159 is certainly no exception. Starting from April 2009, the new 159 will be available with a brand new engine: a 1750 cc turbocharged petrol engine that conforms to Euro 5 standards and develops 200 HP between 4,750 and 5,500 rpm with 320 Nm of torque at only 1,400 rpm.

The new 1750 cc turbo petrol engine (manufactured by FPT - Fiat Powertrain Technologies) comes combined with a six speed manual gearbox and boasts advanced ignition control solutions including direct fuel injection, two continuously variable valve timing units, a turbocharger and a revolutionary scavenging control system. The resulting performance is comparable to - or better than - that of many 3 litre engines while still delivering fuel consumption typical of a compact four cylinder unit.

The force behind the development of any Alfa Romeo engine is the company's determination to use technology to enhance driving pleasure. This certainly applies to the development of the new, Euro 5, "1750 Turbo Benzina 200 CV" unit destined immediately for the Alfa Romeo 159 and later on for the Alfa Romeo Brera, Spider and 159 Sportwagon.

This engine takes the Alfa Romeo 159, with its refined Italian styling and typical sporting elegance to an impressive top speed of 235 kph and accelerates it from 0 to 100 kph in just 7.7 seconds. The 200 HP Alfa Romeo 159 1750 TBi is therefore a true representative of Alfa's exclusive motoring lifestyle. Far from being a mere 'means of transport', the new 159 is a real driver's car. It delivers genuine sports performance and muscular acceleration thanks to generous torque and smooth response even at low revs and the extended power band of a modern, advanced petrol engine that minimises the need for you to 'work' the gearbox. The engine sound too is inspiring without ever becoming tiresome.

Znachi to su zvanichni podaci... Zar mislish da bi dozvolili sebi jednu takvu LAZ? Ako nije bilo tako neshto moguce juche, danas jeste... Izvadi malo glavu iz peska, nemoj da si toliko zadrt. Shta ti to znachi "Subaru je prvi pocheo?" Znachi ako oni ne ne naprve onda niko nece, jer su oni"prvi pocheli?" Ti pouzdano znash da je tako neshto nemoguce???? Svaka ti chast... Vrlo smele izjave...

[Mique]

I ja ne kapiram tako likove koji sve misle da znaju jer su procitali negde nesto i to je tako.Pa brate mili sacekaj prve testove pa cemo videti nije Alfa politicka stranka pa da obecanja ne ispunjava

[starac vujadin]

S tim sto je jednu stvar Jamal dobro predvideo, bar prema recima onih koji su ga prvi testirali - motor ima pomalo "dizelsku" narav slicno VW FSI motorima i posle 5500 rpm brzo gubi dah. Medjutim, uzrok takvog nacina rada nije mali turbo kao sto je mislio nas kolega. Tehnologija ide dalje...A ovo gore receno ne spominju u negativnom kontekstu, vec kao nesto na sta se covek treba navici...

[mirdza]

Abarth se ponasa bas na taj nacin - vuce od niskih obrtaja ali poslije 5500rpm ga napadne astma

[ale944]

pa sta se sekirate, jedan veci turbo resava sve probleme i vozite opet turbo benzinca a ne turbo dizela na benzin

starac:

Medjutim, uzrok takvog nacina rada nije mali turbo kao sto je mislio nas kolega.

nego sta je ako nije mali turbo ?

[mirdza]

Prigusuvanje restrikcionim katalizatorom - makar je kod mene tako

[ale944]

moderni katalizatori minimalno prigusuju izduv, tako da nece biti da je to razlog

[starac vujadin]

pa sta se sekirate, jedan veci turbo resava sve probleme i vozite opet turbo benzinca a ne turbo dizela na benzin

starac:

Medjutim, uzrok takvog nacina rada nije mali turbo kao sto je mislio nas kolega.

nego sta je ako nije mali turbo ?

scavenging control system

[mirdza]

A za nas nepismene - sta je to? Ne mogu nista da nadjem na netu

moderni katalizatori minimalno prigusuju izduv, tako da nece biti da je to razlog

Standardno je kat 600cpi a u SS je 200cpi. Dobici pri promjeni kata ili nakon izbacivanja citavog (nalazi se u DP) su primjetni - bolje se "vrti", i mnogo vise snage pri visljim obrtajima. Potvrdjeno na dyno testovima
Svaki ozbiljniji tuning ovog motora pocinje od promjene DP

[ale944]

scavenging control system

to je posledica overlapa , prosto rececno usisani vazduh pomaze evakuaciju izduvnih gasova jer su jedno vreme i usisni i izduvni ventil otvoreni.
inace taj efekat pomaze motoru da ide u obrtaje , a ne obratno.

jedina novina je to sto je alfa uvela preciznu kontrolu "izgubljene" kolicine usisanog vazduha kroz izduvni ventil, cime se povecava ekonomicnost.

ipak je mali turbo taj koji devojci srecu kvari...

Standardno je kat 600cpi a u SS je 200cpi. Dobici pri promjeni kata ili nakon izbacivanja citavog (nalazi se u DP) su primjetni - bolje se "vrti", i mnogo vise snage pri visljim obrtajima. Potvrdjeno na dyno testovima

neki rezultat ? koliki je dobitak ?

Svaki ozbiljniji tuning ovog motora pocinje od promjene DP

to se radi kod svakog motora za ozbiljniji tuning...ali u kombinaciji sa drugim stvarima.

[mirdza]

Abarth 500 + remap:


Abarth 500 + remap + de-cat:

[ale944]

ok, ali ovde je radjen remap, nije snaga oslobodjena samo skidanjem kata koliko sam uspeo da razumem poljski...

[mirdza]

Oba grafika su sa remapom - sa katom nije bilo mogucnosti da se ide dalje u obrtaje jer je snaga drasticno opadala

[starac vujadin]

A za nas nepismene - sta je to? Ne mogu nista da nadjem na netu

Ale je objasnio, ali evo malo opsirnije...

"It involves having a lot of valve-timing overlap – inlet and exhaust valves open together – between 1000 and 1800 rpm. This gives a direct path through the cylinder for the intake air, already compressed by the turbocharger, to add further airflow energy via the exhaust valve to the turbocharger's exhaust-driven turbine. The amount of escaping high-pressure air is quite small (it increases the total air draw by about 30 per cent) but it's enough dramatically to reduce turbo lag.

That's the scavenging bit – using the momentum of airflow to get the most air through the engine – but there's more. This being a direct-injection engine, fuel is injected only when and where it needs to burn which means, during this low-speed scavenging process, not on the inlet stroke. But just after the power stroke is completed and the hot exhaust gases are being expelled, another little squirt of fuel combines with the remaining oxygen and causes the gases to expand further in the exhaust manifold. This, of course, drives the turbo with yet more energy.

The key to all this is very close, and greatly variable, control of valve timing (on both camshafts), injection timing and ignition timing. The overlap progressively reduces up to 2000rpm, by which time the engine is behaving more like a regular, albeit still very torquey, turbo having suffered minimal lag up to that point.

Does it work? I drove both a Brera and a heavier Spider with the new engine, and the pull from low revs was mighty impressive. It's not a sporting-feeling engine, which is unfortunate given the badge its cars wear, because the initial throttle response is quite soft and the power is fading fast by 6000rpm, but it's a muscular and effortless one which subjectively makes these weighty cars feel rather more eager than they do when powered by the V6, never mind the lacklustre 2.2."

inace taj efekat pomaze motoru da ide u obrtaje , a ne obratno.

Cini mi se da je iz gore navedenog suprotno...sto je i nekako logicno...