Tumblelog by Soup.io
Newer posts are loading.
You are at the newest post.
Click here to check if anything new just came in.

Gearing Up: Why the Humble Transmission Is Now the Hottest Tech Under the Hood

Photo: General Motors

© 2011 CBS Interactive Inc.. You could find price considerations, as well as losses once you add much more mechanical junctions. but the MPG window sticker matters a excellent deal these days, consequently automakers have got focused on a new especially ripe little bit of low-hanging fruit. Chrysler delays to get a tax abatement to always be able to announce a comparable $843 million retooling at its plant in Kokomo, Indiana.


No upper limit, yet 12 speeds isn't likely soon

Automakers defintely won't be tied to a upper gear limit, however they say some kind of organic limit might be forward -- though a technical breakthrough would mean just about all bets are off. The Particular company doesn't even presently supply a car by getting an eight-speed transmission, although the hybrid Enclave it confirmed off at the Shanghai auto present makes use of one.

Jim Lanzon, GM's executive director associated with transmission engineering, mostly agrees:

Last updated may 11, 2011 6:11 PM EDT

GM's Tom Study says the organization hasn't announced when Toledo will commence pumping out those eight-speed boxes, as well as what cars they may go on. However since auto Asian Shemale Webcam companies are usually finally devoting sources to end up being able to what was when the technical ghetto, design improvements have formulated multi-gear transmissions without having virtually any significant packaging sacrifice. Mircea Gradu, director involving transmission and driveline engineering from Chrysler, sees any plateau ahead:


It's about gasoline economy

Automakers aren't doing this regarding bragging rights. However we're usually looking for the subsequent new transmission innovation, and when it emerges we'll end up being almost all over it. In Which begs an obvious query as General Motors (GM) and Chrysler retool to construct eight-speed transmissions: Will Be there a point regarding Shemale Live diminishing returns where it really becomes counterproductive to incorporate yet another gear?

The consensus among automakers is usually that there is this kind of point for today's engines, as well as together with eight speeds we're starting to have close to it. so I don't notice 12-speed transmissions on the immediate horizon. Nevertheless the actual state-of-the-art is relocating fast, therefore 6 speeds are will absolutely no longer good enough.

The latest transmission plant retrofit (part of a larger $2 billion upgrade associated with 17 plants announced inside Toledo) represents considering ahead, one thing GM hasn't usually done. Thirty years ago, I might have stated we'd never observe 6 speeds.

GM spent greater than $800 million since 2006 to equip Toledo to produce six-speed transmissions (now used about everything from your Cadillac Escalade for the Chevrolet Cruze as well Asian Shemale Cams as Malibu). Shifting via 4 speeds to end up being able to 6 in automatics added any not-inconsiderable 4 to end up being able to six % fuel economy gain. but General Motors mentioned Monday that it's investing $260 million in its Toledo, Ohio plant to produce eight-speed automatics, as well as other companies are generally next suit. that will just about all acquire sorted out. However using the energy plants we have now there's a leveling from the benefits after a specific point.

A existing GM six-speed transmission: outmoded technology?

You possibly haven't noticed, yet automakers tend to be adding extra gears in order to both manual along with automatic transmissions together with abandon so as to become able to eke out additional gas economy. but it won't last forever.

Inside the transmission

A tiny bit of transmission tech: Engines have reached their peak efficiency with only 1 spot within each gear, so adding more gears produces a lot more possibilities to max out the energy plant. American cars went for decades along with lazy two-speed automatics as well as three-speed manuals. 1 result of every one of the improvements is that manual transmissions no longer have their conventional three to always be able to five mpg benefit, and quite often today's automatics convey more gears when compared with manuals.

When automakers didn't worry about fuel economy (because consumers Free Tranny Cams didn't), they allow transmission tech remain static. Many Americans drive automatics, and also don't get any thought the range of speeds are generally inside their own transmissions -- and there's no reason regarding them to care. Absolutely No doubt, though, in which we'll notice several trannies with double-digit gearing, squeezing out increasingly small gas economy positive aspects and seeking regarding in which magical 40 mpg around the highway.

If adding gears produced trannies significantly heavier and also bulkier, the main point here would turn negative rather quickly. Precisely what matters is the very fact that GM defintely won't be left out as additional automakers scoop up tranny-related fuel economy benefits.

I can't say eight speeds will always be the limit, absolutely not necessarily -- we tend to be going to evolve for you to a higher quantity of gears. Almost All Legal Rights Reserved.

Plain physics dictates the diminishing return, because you begin to eat any large quantity of energy just turning these more advanced transmissions over. Federal regulation that will could require cars to achieve 60 mpg combined by 2025 can in addition be a big part of the particular picture.

Don't be the product, buy the product!