En tjuvtitt på nästa 5-serie
Pär Brandt - 2007-05-05 03:25Just nu pågår en febril aktivitet bakom garageportarna i München. Nästa generation BMW 5-serie måste uppfylla tuffa bränslekrav och samtidigt bli mer körglad, mera finessrik och ännu snyggare än nuvarande generation. Vår illustratör har tittat i spåkulan och så här ser - förmodligen - nya 5-serien ut när den kommer 2010. SCROLL DOWN FOR ENGLISH TEXT.
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Nästa generation 5-serie blir lite mer konservativ i sin formgivning. Yttermåtten blir desamma som idag, men med rätt design går det att lura ögat. KLICKA FÖR STÖRRE |
BMW 5-serien är på väg mot sin sjätte generation. Våren 2010 ska modellen med internbeteckningen F10 presenteras.
Det är ett tufft jobb som formgivarna och de tusentals teknikerna vid BMW:s utvecklingscentrum tagit på sig när de ska förnya en bil som redan ligger i den tekniska frontlinjen.
Formgivningen blir allt viktigare för köparna och det har här gällt för designchefen Adrian van Hooydonk och hans team att skapa en exteriör som utstrålar märkets kända grundvärden samtidigt som den känns ny och fräsch.
Enligt våra källor kommer den att se ut som vår illustratör Radovan Varicak visar här. Fronten har fått mer upprätta njurar - för att ger bättre skydd för fotgängare - och strålkastarna är inte utdragna lika långt i framskärmarna. Den karaktäristiska växelverkan mellan konvexa och konkava former betonas fortfarande, och det är klart markerat i motorhuvens linjer. Karossens sidoveck är mer framåtlutande.
Bakre takstolpen, C-stolpen, ansluter mer harmoniskt till bakluckan, som nu inte alls ger det "påklistrade" intryck som nuvarande generationen kritiserats för. En del av bakljusen fortsätter också in i luckan för att förstärka intrycket av bredd.
Den som inte tycker "Femman" ser tillräckligt sportig ut, får vänta ytterligare något år, tills M5-versionen dyker upp, med V10-motor och ännu mer effekt än de 507 hästarna i dagens upplaga. Den M-trimmade bilen blir då också ensam i 5-serien om att erbjudas med dubbelkopplingslåda (liknande VW:s DSG-teknik som nu kommer hos allt fler tillverkare).
Standardversionen kommer i stället att finnas med åttastegad automat - det har ju konkurrenten Lexus. Den lådan utvecklas tillsammans med ZF, som även är medkonstruktör till den nya fyrhjulsdrift, som också kommer att finnas till nya Femman. Det systemet får "Dynamic Performance Control", vilket betyder aktiv steglös kraftfördelning även mellan bakhjulen, beroende på hur bilen under- respektive överstyr. Resultatet är ökad säkerhet och förmåga att hantera större sidkrafter. Den här nya differentialen kommer även till 3-serien och sannolikt även 1-serien, om än som tillägg.
Den nya 5-seriegenerationen får ett helt nytt chassi, med dubbla tvärlänkar framtill, liksom på X5-modellen. Det ger bättre kontroll och väggrepp vid hög sidoacceleration, enligt chassiteknikerna.
Den aktiva styrningen utvecklas, och stor möda läggs på att ge en exaktare styrrespons i ratten. Med hjälp av det extremt snabba datanätverket Flex-Ray blir den adaptiva stötdämpningen ännu mer effektiv, liksom de aktiva kränghämmarna.
Kontrollsystemet iDrive blir lite mer lättskött med ytterligare ett par programmerbara direktknappar.
Nya 5-serien behåller dagens karossmått, och motorprogrammet startar med fyror, för den som vill köra ekonomiskt. BMW satsar hårt på minskad bränsleförbrukning, och därmed faller V8-dieseln bort.
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Nya 5-serien blir lite mera diskret och yttermåtten behålls. KLICKA FÖR STÖRRE |
Någon fullhybrid är inte aktuell, däremot det start-stopp-system som redan finns i 1-serien samt en "lätthybrid", där elmotorn hjälper till vid start. Elmotorn sitter inbyggd i startkransen och den fungerar både som generator, startmotor och "hjälpmotor" vid acceleration. Eftersom just acceleration är det tillfälle då motorn drar mest bränsle finns många bränsledroppar att vinna, även med en relativt enkel elmotorkonstruktion. "Hybrid-light" anpassas till både diesel och bensin motorerna.
Den "Two-Mode" transmission som BMW utvecklar ihop med General Motors och DaimlerChrysler är främst inriktad för större fordon med krav på sig att kunna dra tungt. Dubbla elmotorer sitter inbyggda i något som liknar en lätt förstorad automatlåda och det sinnrika styrsystemet gör att man kan låta elmotorerna hjälpa till i ett brett spektra av körsituationer, samtidigt som de kan vändas och regenerera elkraft vid inbromsning. Two-Mode är dock inte aktuellt för nästa generation 5-serie, även om BMW inte utesluter att det kan tillkomma en liknande teknik i slutet på livscykeln. "Hybrid Light" är det vi får nöja oss med, inledningsvis, men eftersom BMW redan lyckats kapa mycket bränsleförbrukning på sina motorer kan det kanske räcka tillräckligt långt ändå. Även om det är tveksamt att BMW når ända fram till EU:s nya krav på ett genomsnittligt CO2-utsläpp på 130 g/km till senast 2012.
In english:
When you think of luxury executive saloons, one car always comes to mind - the BMW 5-series. A class leader since its inception, the 5-series remains a crucial car to BMW. With the current E60 5-series introduced back in 2004, BMW is preparing the sixth-generation model to be revealed in 2010.
It will be a tough job for the designers as well as the thousands of engineers working across BMW's development centers to renew the current model, a car that already resides at the edge of the technical front line. The new design is critical for BMW's design manager Adrian van Hooydonk and his team, who have to create an exterior that radiates the brand's distinctive design values and at the same time feels new and fresh. Using information from various sources, these renderings were compiled by ourillustrator Radovan Varicak, giving us a preview of what the final version will look like.
The front-end will likely feature a more upright kidney grille in order to comply with stronger pedestrian protection laws, while the headlights won't be stretched out like on the current model. BMW's characteristic interaction between convex and concave shapes will still be emphasized, and will be clearly indicated in the engine hood's lines. The rear roofline and C-pillar connects more fluidly to the trunk lid, which is now devoid of the 'Bangle-butt' that was so universally derided with the E60 model. Parts of the tail-lights continue onto the trunk lid in order to strengthen the impression of width. We must say, this design is very pleasing and if BMW's car looks anything like this, we sure it'll lure back any customers loss to its rivals because of the controversial styling of the former E60.
The new 5-series is being built off an entirely new chassis, with double wishbones in the front, like on the new X5. The move is designed to give better control and road grip around corners, according to the chassis engineers. With the aid of the extremely fast Flex-Ray automotive network communications protocol, the adaptive shock absorbers is set to become more effective, as will active steering. BMW will also be updating its iDrive system for the new 5-series, making life a little easier with the addition of yet another pair of programmable buttons.
Those that think the standard 5-series isn't sporty enough will have to wait for a few more years until the new M5 turns up with its V10 motor and more power than the 507hp offered in today's edition. The M version will be the only 5-series model offered with a new dual clutch gearbox (similar to VW's DSG technology). The standard version will instead be fitted with an 8-speed automatic transmission that will take the fight to Lexus. This gearbox is being developed by ZF, which will also manufacture a new four wheel drive system that will feature in the new Five. A new 5-series wouldn't be complete without the introduction of more electronic driver's aids, and this time BMW is bringing "Dynamic Performance Control" to the table. The system actively distributes torque between the wheels, depending on how the car acts during a turn. The result is increased security and the ability to handle larger side forces. The new differential will also come in the new 3-series and potentially even the 1-series as an option.
A full-hybrid system, featuring an electric motor in parallel with an engine, is not currently planned for the new 5-series, which instead is likely to feature the same system already used in the 1-series. This "light-hybrid" system consists of an electric starter motor that's connected to the crankshaft and can function as both a generator and a propulsion system, spinning the engine during initial off the line acceleration. The "light-hybrid" will be available in both diesel and petrol versions and expect a new V8 diesel engine to make its debut in the next-gen model.
The "two-mode" hybrid transmission that was developed by BMW together with General Motors and DaimlerChrysler is mostly aimed at bigger vehicles such as trucks and SUVs. The design features dual motors, and an advanced control system that can allow both engines can be turned on simultaneously, and to regenerate electric power during braking.
This two-mode system, however, is not currently planned for the next generation 5-series, although BMW has not eliminated the possibility that a similar technology can be added towards the end of the model's life cycle. We'll have to make do with the "light hybrid" at the moment since BMW feels it has already succeeded in heavily reducing the fuel consumption of their engines. However, it remains to be seen whether or not BMW will be able to reach the EU's new requirements for average CO2 emissions of 130g/km by 2012.
Translation: Motorauthority.com
When you think of luxury executive saloons, one car always comes to mind - the BMW 5-series. A class leader since its inception, the 5-series remains a crucial car to BMW. With the current E60 5-series introduced back in 2004, BMW is preparing the sixth-generation model to be revealed in 2010.
It will be a tough job for the designers as well as the thousands of engineers working across BMW's development centers to renew the current model, a car that already resides at the edge of the technical front line. The new design is critical for BMW's design manager Adrian van Hooydonk and his team, who have to create an exterior that radiates the brand's distinctive design values and at the same time feels new and fresh. Using information from various sources, these renderings were compiled by ourillustrator Radovan Varicak, giving us a preview of what the final version will look like.
The front-end will likely feature a more upright kidney grille in order to comply with stronger pedestrian protection laws, while the headlights won't be stretched out like on the current model. BMW's characteristic interaction between convex and concave shapes will still be emphasized, and will be clearly indicated in the engine hood's lines. The rear roofline and C-pillar connects more fluidly to the trunk lid, which is now devoid of the 'Bangle-butt' that was so universally derided with the E60 model. Parts of the tail-lights continue onto the trunk lid in order to strengthen the impression of width. We must say, this design is very pleasing and if BMW's car looks anything like this, we sure it'll lure back any customers loss to its rivals because of the controversial styling of the former E60.
The new 5-series is being built off an entirely new chassis, with double wishbones in the front, like on the new X5. The move is designed to give better control and road grip around corners, according to the chassis engineers. With the aid of the extremely fast Flex-Ray automotive network communications protocol, the adaptive shock absorbers is set to become more effective, as will active steering. BMW will also be updating its iDrive system for the new 5-series, making life a little easier with the addition of yet another pair of programmable buttons.
Those that think the standard 5-series isn't sporty enough will have to wait for a few more years until the new M5 turns up with its V10 motor and more power than the 507hp offered in today's edition. The M version will be the only 5-series model offered with a new dual clutch gearbox (similar to VW's DSG technology). The standard version will instead be fitted with an 8-speed automatic transmission that will take the fight to Lexus. This gearbox is being developed by ZF, which will also manufacture a new four wheel drive system that will feature in the new Five. A new 5-series wouldn't be complete without the introduction of more electronic driver's aids, and this time BMW is bringing "Dynamic Performance Control" to the table. The system actively distributes torque between the wheels, depending on how the car acts during a turn. The result is increased security and the ability to handle larger side forces. The new differential will also come in the new 3-series and potentially even the 1-series as an option.
A full-hybrid system, featuring an electric motor in parallel with an engine, is not currently planned for the new 5-series, which instead is likely to feature the same system already used in the 1-series. This "light-hybrid" system consists of an electric starter motor that's connected to the crankshaft and can function as both a generator and a propulsion system, spinning the engine during initial off the line acceleration. The "light-hybrid" will be available in both diesel and petrol versions and expect a new V8 diesel engine to make its debut in the next-gen model.
The "two-mode" hybrid transmission that was developed by BMW together with General Motors and DaimlerChrysler is mostly aimed at bigger vehicles such as trucks and SUVs. The design features dual motors, and an advanced control system that can allow both engines can be turned on simultaneously, and to regenerate electric power during braking.
This two-mode system, however, is not currently planned for the next generation 5-series, although BMW has not eliminated the possibility that a similar technology can be added towards the end of the model's life cycle. We'll have to make do with the "light hybrid" at the moment since BMW feels it has already succeeded in heavily reducing the fuel consumption of their engines. However, it remains to be seen whether or not BMW will be able to reach the EU's new requirements for average CO2 emissions of 130g/km by 2012.
Translation: Motorauthority.com
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