Packing more gear
ratios into compact front-drive transmission housings is one of the
technical challenges facing GM and Ford engineers as they collaborate on
future AT development. Shown is a 2013 GM 6T70 6-speed unit, which
shares its architecture and much of its bill of materials with Ford's
6F.
A decade ago, the word "collaboration" was on
everyone’s lips as the industry looked for new ways to save cost and
speed time to market. Even companies that were arch competitors were
joining forces out of economic realism. Collaboration was a pragmatic
strategy as long as the shared goals were understood by all involved—and
kept clear throughout the process, which could be awkward at first for
those charged with making it happen.
"The secret is to gang up on the problem, rather than each other," advised Tom Stallkamp, Chrysler’s purchasing boss who enjoyed the best supplier relations of the Detroit Three during the 1990s.
The 2002 deal between GM and Ford
to co-develop a new 6-speed automatic transaxle for front-drive
applications turned out to be a landmark in collaborative ventures. It
wasn’t easy convincing the large transmission-development groups of each
OEM to play nice and work together, but that’s what they did and
production began in 2006. Since investing a combined $720M in
manufacturing assets to support the new transmission, Ford’s 6F and GM’s
6T70/6T75 have been produced in multiple plants at high volume and
quality in nearly 30 vehicle applications to date.
As SAE
readers know, creating and producing new transmissions is one of the
most expensive activities in product development. Experts in this area
tell me an all-new planetary automatic will cost approximately $90M in
ER&D, plus another $600M to $700M for production equipment able to
handle output of 500,000 units per year. And if you need new bricks and
mortar, add $200M. There’s not much change left from a billion dollars.
And PD costs are expected to continue rising as the transmissions
themselves become ever-more sophisticated.
That’s why the news that GM and Ford
are again collaborating in the transmission-engineering arena is
important. By the time this SAE Technology eNewsletter reaches you, the
two automakers will be close to officially announcing their joint
studies, development, and potential manufacture of a variety of new
fuel-efficient transmissions. Independently GM and Ford have been
investigating and developing new 8-, 9-, and 10-speed automatics
for front- and rear-drive car and truck applications. Perhaps the units
farthest along will be completed as joint programs. Perhaps clean-sheet
designs that combine the best ideas from each OEM are already under way.
(When this article was written in late September, there was no word on
how intellectual property will be addressed.)
Either way, the new GM-Ford
collaboration limits both companies’ risk exposure while increasing the
mutual benefits in production. Rather than having to purchase licenses
from third-party powertrain suppliers as some competitors are doing, the
world's second- and fourth-largest OEMs are maintaining this “core”
powertrain technology in-house. Their combined scale will put
considerable cost pressure on competitors. Their engineers again will
have to “gang up” on the challenges ahead.
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