• Jan 13, 2007
It would seem that BMW reads Autoblog. How else would you explain them, at least partially, answering our question about how a conventional automobile would utilize some of the hybrid demon-tweaks?

For the first time ever, BMW has equipped a non-hybrid car with a regenerative braking system. There's a new battery that uses fiberglass mats between the plates to keep the electrolytes put, and a corresponding "intelligent" alternator. The battery technology, known as Absorbtive Glass Mat construction is capable of being charged very quickly without boiling; and they stand up far better to the deep cycling that would be abusive to a traditional lead-acid battery. The ability to receive and deliver high amperages reliably makes the AGM batteries ideal for coupling with the rest of BMWs Efficient Dynamics program. The battery can be fully charged during braking, which reduces the load on the engine by making the alternator work less. The program's intent is to reduce weight and fuel consumption, ultimately keeping CO2 emissions down. BMWs efforts result in a vehicle that has the low-rolling-resistance tires, electrically operated AC and power steering and stop/start systems of a hybrid, without the electric motors.

[Source: Fifth Gear via Jalopnik]


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    • 1 Second Ago
  • 17 Comments
      • 8 Years Ago
      Very smart move from BMW. Gas/diesel savings without the batteri hassle. I think MB will follow with the new c series in the same way.
      • 8 Years Ago
      Hi,

      Great blog and great idea by BMW.

      My question might not have anything to do with anything though :)

      I just want to use that pic as a wallpaper. Where could I find a hi-rez version?

      thnks.
      • 8 Years Ago
      Yeah, cool - looks like it won't need spark plugs either - is it a diesel? I guess that's why it's filed under green. . .
      • 8 Years Ago
      Neat stuff - looks almost like a disassembled engine though. . .
      • 8 Years Ago
      From the picture first I thought it was M5 performance upgrade for the regular 5 series, but anyway this seems to be a great idea.
      • 8 Years Ago
      This is another question answered by BMW that no one is asking. Like I-Drive.
      • 8 Years Ago
      It was about time for it. A car doesn't need to be a hybrid to be efficent.
      • 8 Years Ago
      Maybe AGM technology has improved in the past decade? The post says they went that route to enable ultra-fast recharges.

      BMW had another hybrid idea that was even niftier: using exhausts heat to generate steam to power a small steam engine hitched to the engine. Good for about ten horsepower, if memory serves. Which may not sound like much, but it's a significant chunk of what a car needs to just cruise down the road.

      Great photo of the M5 engine bits, even if it is a bit OT.
      • 8 Years Ago
      the low-rolling-resistance tires

      I don't know about you, but I want HIGH resistance tires on my Bimmer. Resistance is another word for friction, and friction is what keeps your car going in the direction you want.

      While they're at it, salvage some 14" 185-series wheels of a 95 Civic and pick up a few more MPG?
      • 8 Years Ago
      is this a similar battery to the mid 90's miata one.....i recall that being a matt battery as well
      • 8 Years Ago
      CMP- Here you go:

      http://www.rsportscars.com/foto/01/bmwm506_engine5.jpg

      I found it by google image search "m5 engine". I first saw this pic in the book: "The Complete Book of BMW" by Tony Lewin. A great book if you love the brand.
      • 8 Years Ago
      Some of you are missing part of the point on a grand scale (particularly the first poster, olddavid - odd that the first post is often the most ignorant).

      BMW's mission is to make normal operating more efficient. For a long time, BMW drivetrains have been more efficient than comparable drivetrains, putting down more power with less parasitic loss. This is an attempt to reduce parasitic losses even further. The result will be the capability to run more efficiently - or put more power to the ground for any given engine.

      Yeah olddavid - a problem no one had.
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