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  #1  
Old 02-24-2005, 07:25 PM
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Default BorgWarner Launches Breakthrough VCT Technology, for New Family of GM V6 Engine

Press release
http://www.prnewswire.com/cgi-bin/stories....03024493&EDATE=

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AUBURN HILLS, Mich., Feb. 16 /PRNewswire-FirstCall/ -- BorgWarner Morse
TEC has begun production of its first high-volume variable cam timing (VCT)
systems for a new family of General Motors V6 engines being introduced this
year. This system uses a Torsional Assist(tm) technology instead of the
conventional oil-pressure actuated approach. The new technology is beneficial
for both overhead valve and overhead cam engines, and represents a leap to the
next generation of cam phasing. The launch is BorgWarner's first production
of its VCT technology and constitutes a major step in the expansion of
BorgWarner's growing engine management business.
"This production launch is a milestone that has been years in the making,
and reflects a breakthrough that will revolutionize the use of variable cam
timing," said Roger Wood, President and General Manager, BorgWarner Morse TEC.
"VCT is a natural extension of our global capability in the fixed timing drive
market. We are delighted to provide GM, and the drivers of vehicles equipped
with these new engines, with improved fuel economy, reduced emissions and
enhanced performance." These new sophisticated V-6 engines, which include
3.5L and 3.9L variants, are the first mass-produced overhead valve engines to
feature cam phasing in an overhead-valve engine design. Later this year, the
new 3.5L and 3.9L V-6 engines will debut in the 2006 model year Chevrolet
Impala, Chevrolet Monte Carlo, and Pontiac G6.
Variable cam timing is a means of precisely controlling the flow of air
into and out of an engine by allowing the camshaft to be dynamically phased
relative to its crankshaft. BorgWarner VCT technology includes devices that
utilize camshaft torque as their actuation energy, in contrast to conventional
phaser devices that depend on engine oil pressure for actuation.
"The Torsional Assist innovation that BorgWarner is providing to GM is
unique to the industry," Wood said. "It requires fewer engine architecture
changes and yields fuel and emissions benefits greater than conventional oil-
pressure actuated devices. This launch is another example of how BorgWarner
is exceptionally positioned to engineer, manage and supply completely
integrated variable cam timing systems."
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Old 02-25-2005, 12:51 PM
CalinG7 CalinG7 is offline
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So what does that mean for the 3.5 and the 3.9 V6s? What kind of power and fuel consumption will this VCT system create? At the LA auto show GM was advertising the Impala with the 3.5L V6 with 210hp. That's more than the Malibu's 200hp, but if that's the only increase then it's not a big deal at all.
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Old 02-25-2005, 08:40 PM
taskbearer taskbearer is offline
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Reading that news article is misleading, it makes the system sound like the engines are the best in the world..........absolutely not.
The engines output are well below mediocre level, probaly only on the emmisions side wold the drastic change be seen.

But don't start dissing this technology yet, the first out of BMW's vanos VVT did not improve greatly on the previous engine, but with refinement it got a whole lot better. expect much better TORQUE ASSIT vvt in the future.

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Old 02-26-2005, 01:03 AM
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hey, the technology has to start somewhere, and it can only get better, just like you said about the VANOS technology in bimmers, it may not have started out so great, but now its an amazing technology really...we'll see what happens with this...
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Old 02-26-2005, 01:22 AM
Top Secret Top Secret is offline
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So will this technology also be seen in the Australian-made V6's? Or just the ones manufactured in Canada?
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Old 02-26-2005, 01:43 AM
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I'm sure it'll be seen across the entire GM line, I mean, I don't see what would be stopping it to do so...
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