SAE stuff
Thread Starter
Burning Brakes
Joined: Feb 2000
Posts: 1,195
Likes: 1
From: East Bay CA
SAE stuff
In case anyone cares - the big annual SAE World Congress begins next week.
http://www.sae.org/servlets/techSess...SESSION_MATRIX
There we 3 things that caught my eyes. The first is about transversely
mounted engines. The second may hint about the new six-speed automatics.
The third is a paper on the new XLR engine.
Title: Fuel Economy and Performance Potential of a Five-Speed 4T60-E
Starting Clutch Automatic Transmission Vehicle
http://www.sae.org/servlets/productD...D=2003-01-0246
----------------------------------------------------------------------------------
Title: A Five-Speed Starting Clutch Automatic Transmission Vehicle
http://www.sae.org/servlets/productD...D=2003-01-0248
----------------------------------------------------------------------------------
Title: The Next-Generation Northstar Dohc 4.6l V8 Engine With Four-Cam
Continuously Variable Valve Timing for Cadillac
http://www.sae.org/servlets/productD...D=2003-01-0922
Also:
http://media.gm.com/division/powertr...%20_family.htm
[Modified by Runge_Kutta, 6:35 PM 2/25/2003]
http://www.sae.org/servlets/techSess...SESSION_MATRIX
There we 3 things that caught my eyes. The first is about transversely
mounted engines. The second may hint about the new six-speed automatics.
The third is a paper on the new XLR engine.
Title: Fuel Economy and Performance Potential of a Five-Speed 4T60-E
Starting Clutch Automatic Transmission Vehicle
http://www.sae.org/servlets/productD...D=2003-01-0246
----------------------------------------------------------------------------------
Title: A Five-Speed Starting Clutch Automatic Transmission Vehicle
http://www.sae.org/servlets/productD...D=2003-01-0248
----------------------------------------------------------------------------------
Title: The Next-Generation Northstar Dohc 4.6l V8 Engine With Four-Cam
Continuously Variable Valve Timing for Cadillac
http://www.sae.org/servlets/productD...D=2003-01-0922
Also:
http://media.gm.com/division/powertr...%20_family.htm
[Modified by Runge_Kutta, 6:35 PM 2/25/2003]
Race Director
Joined: May 2000
Posts: 12,712
Likes: 2,271
Re: SAE stuff (Curtis A. Franz)
Thanks for the links! I notice the last one states that the Gen IV V8 will be introduced in 2004, but I figure this refers to CALENDAR year, not model year. We'll know in June.
Duke
Duke
Thread Starter
Burning Brakes
Joined: Feb 2000
Posts: 1,195
Likes: 1
From: East Bay CA
Re: SAE stuff (Curtis A. Franz)
Curtis,
The articles won't be available for a little while but here's where
you can order them from:
http://www.sae.org/servlets/techtrack?PROD_TYP=PAPER
There have been many other ones relevant to C5, LS1, and the
Northstar that you might want.
The articles won't be available for a little while but here's where
you can order them from:
http://www.sae.org/servlets/techtrack?PROD_TYP=PAPER
There have been many other ones relevant to C5, LS1, and the
Northstar that you might want.
Drifting
Joined: Jun 2001
Posts: 1,270
Likes: 0
From: Prescott AZ
Re: SAE stuff (Runge_Kutta)
Here is a copy of one of the GM Powertrain postings. Okay it is not a 5 speed but it does say it is under study.
Dual Input Clutch, Layshaft Automatic Transmission (DCT)
Adds powershifting to the advantages of an MTA
Overview:
DCT is basically two MTA transmissions in one case, one with gears 1, 3, and 5 and one with gears 2, 4, and 6. Clutch-to-clutchshifting enables the transmission to shift under power, eliminating the torque interruption that is characteristic of MTA systems.
Like an MTA system, the DCT uses engine control to optimize feel and has both automatic and manual operation modes that can be selected at any time.
Under study at GM Powertrain.
Benefits:
Fuel economy as good as or better than a manual, maintaining the feel and function of an automatic
The layshaft configuration permits flexibility in designing gear ratios for optimum fuel economy and performance of different vehicles
Well-suited to high power/high rpm engine applications
Well-suited for integration of electric motors for hybrid applications
:chevy
Dual Input Clutch, Layshaft Automatic Transmission (DCT)
Adds powershifting to the advantages of an MTA
Overview:
DCT is basically two MTA transmissions in one case, one with gears 1, 3, and 5 and one with gears 2, 4, and 6. Clutch-to-clutchshifting enables the transmission to shift under power, eliminating the torque interruption that is characteristic of MTA systems.
Like an MTA system, the DCT uses engine control to optimize feel and has both automatic and manual operation modes that can be selected at any time.
Under study at GM Powertrain.
Benefits:
Fuel economy as good as or better than a manual, maintaining the feel and function of an automatic
The layshaft configuration permits flexibility in designing gear ratios for optimum fuel economy and performance of different vehicles
Well-suited to high power/high rpm engine applications
Well-suited for integration of electric motors for hybrid applications
:chevy
Thread Starter
Burning Brakes
Joined: Feb 2000
Posts: 1,195
Likes: 1
From: East Bay CA
Drifting
Joined: Jun 2001
Posts: 1,270
Likes: 0
From: Prescott AZ
Re: SAE stuff (Runge_Kutta)
Okay, here is a better fit for one of the SAE papers and yes it is from the powertrain index as is what I quoted above and Runge Kutta ( Mr Difeq) referenced with the above URL.
Integrated Friction Launch
Reducing component complexity by leveraging an existing clutch in the transmission for launching a vehicle
Overview:
New wide-ratio 6-speed automatic transmissions have sufficient torque multiplication to eliminate the need for a traditional torque converter and allow the use of an existing range clutch to act as an integrated friction launch clutch to launch a vehicle.
Benefits:
Improves transmission cost, mass, packaging, and fuel economy
Smaller packaging can enable improved crash structure, turning radius, and integration of hybrid technologies
Go for it Chebby
:chevy
Integrated Friction Launch
Reducing component complexity by leveraging an existing clutch in the transmission for launching a vehicle
Overview:
New wide-ratio 6-speed automatic transmissions have sufficient torque multiplication to eliminate the need for a traditional torque converter and allow the use of an existing range clutch to act as an integrated friction launch clutch to launch a vehicle.
Benefits:
Improves transmission cost, mass, packaging, and fuel economy
Smaller packaging can enable improved crash structure, turning radius, and integration of hybrid technologies
Go for it Chebby
:chevy
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