SAE Symposium on Hybrids
#1
04-11-2007, 03:34 AM
Join Date: Oct 2005
Location: Huntsville, AL
Posts: 5,613
SAE Symposium on Hybrids
http://www.designnews.com/article/CA6429989.html
Sounds like a great meeting.
BTW, this is the clearest photo of the two-stage transmission to date. What I thought might have been some sort of torque converter now appears to be springs normally used in a clutch plate to smooth the power pulses. Also, it looks like the two motors are symmetrical, back-to-back. Also, I see what looks to be three sets of planetary gears. The first and third sets are connected to the electric motors. The middle-set is one I haven't figured out, yet.
Bob Wilson
Progress, Challenges of More Hybrid Vehicles Discussed at SAE
Hybrid Vehicle Technologies Symposium addressed the hottest powertrain technologies
Randy Frank, Contributing Editor -- Design News, April 9, 2007
At the fourth SAE Hybrid Vehicle Technologies Symposium, held Feb. 7-8 in San Diego, carmakers and researchers discussed both the progress being made in hybrid electric vehicles (HEVs) and the challenges that lie ahead. As usual, the most frequently discussed topic was battery technology and the outlook for breakthroughs. . . .
Hybrids Without Batteries
Independent engine development company, Scuderi Group has quite a different approach to hybrids. The company's Split-Cycle Engine, also called an air hybrid, divides the four strokes of the traditional Otto cycle (intake compression, power and exhaust) over a paired combination of one compression cylinder and one power cylinder. A compression cylinder compresses the gas, which is then transferred to the power cylinder through a gas passage. . . .
(excellent diagram of two-mode transmission)
Hybrid Vehicle Technologies Symposium addressed the hottest powertrain technologies
Randy Frank, Contributing Editor -- Design News, April 9, 2007
At the fourth SAE Hybrid Vehicle Technologies Symposium, held Feb. 7-8 in San Diego, carmakers and researchers discussed both the progress being made in hybrid electric vehicles (HEVs) and the challenges that lie ahead. As usual, the most frequently discussed topic was battery technology and the outlook for breakthroughs. . . .
Hybrids Without Batteries
Independent engine development company, Scuderi Group has quite a different approach to hybrids. The company's Split-Cycle Engine, also called an air hybrid, divides the four strokes of the traditional Otto cycle (intake compression, power and exhaust) over a paired combination of one compression cylinder and one power cylinder. A compression cylinder compresses the gas, which is then transferred to the power cylinder through a gas passage. . . .
(excellent diagram of two-mode transmission)
BTW, this is the clearest photo of the two-stage transmission to date. What I thought might have been some sort of torque converter now appears to be springs normally used in a clutch plate to smooth the power pulses. Also, it looks like the two motors are symmetrical, back-to-back. Also, I see what looks to be three sets of planetary gears. The first and third sets are connected to the electric motors. The middle-set is one I haven't figured out, yet.
Bob Wilson
Last edited by bwilson4web; 04-11-2007 at 12:07 PM.
#2
04-11-2007, 12:05 PM
Pretty Darn Active Enthusiast
Join Date: Nov 2006
Location: Finger Lakes Region NY
Posts: 264
Re: SAE Symposium on Hybrids
Hybrid technology is certainly a hot subject, and a good place for tinkerers and mechanical/electrical genius types to dig in and serve society.
Harry
Harry
#3
04-11-2007, 12:29 PM
Pretty Darn Active Enthusiast
Join Date: Nov 2006
Location: Finger Lakes Region NY
Posts: 264
Re: SAE Symposium on Hybrids
I imagine that middle set is to enable the choice of using one electric motor, or two, or to have one as traction and the other as a generator? I'm guessing, of course.
Harry
Harry
#4
04-11-2007, 12:43 PM
Join Date: Oct 2005
Location: Huntsville, AL
Posts: 5,613
Re: SAE Symposium on Hybrids
Bob Wilson
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Jason
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04-14-2005 07:11 AM
