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2010 2011 BMW 5 Series Forum F10 BMW unveils single turbo N55 six-cylinder engine for new 5-series GT |
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05-27-2009, 04:51 AM | #23 | |
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A twin scroll or bi-scroll essentially is two turbos in one as they can effectively stream the exhaust to the vanes from alternating cylinders and not cause turbulence. The new ///M motor started the BMW twin scroll reign, with this following suit- there are more on the way.
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05-27-2009, 09:47 AM | #24 | |
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05-27-2009, 10:37 AM | #25 | |
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Best regards, south
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05-27-2009, 01:32 PM | #26 |
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cross-cooperation is part of the automotive landscape, but i think your points are too far from what will realistically happen.
BMW, Mercedes, Chrysler and GM all participated in their hybrid program. the results have been seen (GM and Chrysler have only applied their jointly developed systems on the full-size SUV's, other hybrids by GM were developed separately). However, to say that the C and 3-series, the E and 5-Series and other cars will be based on the similar architecture is probably a VERY long-term project. we've seen that the F-30 platform is currently under development. given a 6-year life cycle for that platform, there won't be a possible development of a joint 3-C platform until the 2018 model. the new F-10's are starting to come out. again, given a 6-year life cycle, there won't be a new E/5 platform until 2016. the current MB ML is based on the current Jeep Grand Cherokee, designed primarily by the Germans, featuring a body-on-frame chassis. the next generation ML will feature a new chassis, developed by Chrysler, which is said to be far superior to the current chassis. however, it's still a body-on-frame chassis. with that being said, we probably won't see a new ML for another year, and another new platform for a while after that. an ML/X5 cross-developed SUV won't hit the market for a really long time. with all that, some mags may print stuff about rumors they've heard, but just from a planning point, unless BMW and Merc want to scrap their current plans (in which they've invested heavily), we won't see a single platform developed from this arrangement for a very long time. looking at possible partners for BMW to team up with may be a great way to see where the products will end up, but i don't see BMW merging up with anyone, anytime soon, except for small projects, like they currently have with PSA (and formerly Chrysler) to build the engines for the MINI.
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05-27-2009, 04:12 PM | #27 | |
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Personally I hope that no mergers happen. At most, the odd engine and tech collaborations are fine. The magazine did make mention that the companies are "still at least a year" away from making any decisions, so yes, if anything comes from this we'll probably only see the effects much later. |
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05-27-2009, 04:34 PM | #28 | |
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I guess what I am saying is that the N55 will not signify the end of the N54. I hope that clarifies.
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05-27-2009, 06:59 PM | #29 | ||
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05-27-2009, 07:08 PM | #30 |
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why wouldnt it replace the N54??? BMW would be stupid not to utilize better performace and efficiency in an easier to build, more cost effective package and making it available in every car. Where have you heard that they arent??
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05-27-2009, 08:44 PM | #32 |
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no it is not. twin scroll only has two settings or two different sized entires. while the variable geometry twin turbos in the 997 have infinitely variable settings just like a CVT transmission. It is a much more sophisticated turbo design.
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05-27-2009, 09:20 PM | #33 | |
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The N54 did not replace the N52 did it? Nope and they could have made a single turbo de-tuned version and said good bye to it as well. All BMW engines have a life cycle just as the cars do. The NA V8 is still in the X5 and the 550i as well, they did not go turbo. The N54 will remain in some models until end of life. The N55 has a purpose and will be added in the US market to the model that has not gone turbo yet... BMWNA likes to launch a breakthrough item in new or refreshed models. The 5er GT brings in the PAS concept and Brake energy regeneration, the N53 marketing would have been too much or a waste so it is held for another. -M
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05-28-2009, 12:02 AM | #34 | |
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I know but.. Audi has their A4 available in FWD even an A6 i believe.. |
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05-28-2009, 04:52 AM | #35 |
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Audi will begin dropping FWD in the US market as early as this fall in the majority of its models- the A3 may still have the option.
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05-28-2009, 07:10 AM | #36 |
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Both engines produce nearly the equivalent amount of power with improvements in response made in the newer engine. Why would BMW continue to make two powerplants that make nearly equivalent power from the same displacement?
Using common sense, this engine would probably phase out the old one across the lineup as the old cars get replaced. Im sure the new 535i sedan will use this new engine alongside the GT as the second model to get the upgrade |
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05-28-2009, 09:04 AM | #37 | |
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05-28-2009, 09:36 AM | #38 | |
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Best regards, south
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05-28-2009, 05:34 PM | #39 | |
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I will use the example of the DCT transmission in non ///M cars. In the EU and elsewhere the 335 in E92/93 guise can be ordered with it- in the US this still does not exist. Reason: needed a new model in the US to launch it in (standard BMWNA fare). Note: the N55 is not launching in the US with the 5er GT and will not be part of that models offering initially (going to be launched in another model). In the EU there is the N54 in the 740i that produces more power than the one in the E9X (etc.) This motor is still not in the US BUT will be offered as part of the Power Kit for the N54- what this means is that BMW had to go through the whole process of homologation for that version of the N54 in other N54 powered models- so one can expect (and what my sources have been saying for some time) that the N54 will see an up-tune before its demise. There are other motors being developed as well and that will begin appearing with LCIs and new models.... the N52 may be the first to go. I will explain more when I can
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05-28-2009, 06:15 PM | #40 | |
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05-28-2009, 08:39 PM | #41 | |
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Maybe the N54 will be used as a higher output model in many BMW's producing around 350hp and the upcoming N55 could be the secondary engine producing 300hp.
And before rejecting this thought, think about how easily N54 can produce 350hp with some minor mods Quote:
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05-28-2009, 08:50 PM | #42 | |
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05-29-2009, 10:57 AM | #43 |
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+1....Sorry dude for the misunderstanding.....I think I quoted the wrong post....At that time, I was really sleepy....so .....
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