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GM Saturn Aura Greenline Hybrid on Sale in 2006

12 April 2006

Greenline_hybrid_system
The current Greenline BAS hybrid powertrain. Click to enlarge.

GM will have its Saturn Aura Greenline Hybrid sedan on sale by the end of 2006, according to Jill Lajdziak, Saturn’s general manager. Saturn introduced the Aura hybrid during the New York International Auto Show. (Earlier post.)

The Aura uses the same hybrid powertrain as the Saturn VUE Greenline hybrid: a 2.4-liter Ecotec engine with a Belt-Alternator-Starter (BAS) system augmented with a 36-Volt NiMH battery pack.

Vuebas
The hybrid accessory drive. The dual tensioner assembly that controls the motoring and generating loads is patent pending. Click to enlarge.

Functionally, the VUE hybrid system offers start-stop and regenerative braking—features expected in a simple Belt Alternator Starter system. GM, however, developed a dual tensioner assembly for the hybrid accessory drive (the motor/generator package) that will transfer a small amount of torque to the drive system for very brief periods of time.

The assembly combines an hydraulic strut tensioner and a friction-damped rotary tensioner on a common pivoting arm to the control the bi-directional loads (motoring and generating).

This assistance takes three forms: electrically motored creep at startup, light power assist during acceleration, and light electric mode during deceleration.

The system consists of six elements:

  • The electric motor/generator unit that replaces the alternator, and is capable of 156 Nm of auto-start torque;

  • Engine-coolant cooled power electronics that control the motor/generator unit and provide 12-volt vehicle accessory power;

  • A Cobasys NiMHax 36-Volt NiMH hybrid battery pack capable of delivering and receiving more than 10 kW of peak power;

  • An engine control module;

  • An engine accessory drive with new, dual-tensioner assembly and cord belt that enables transfer of motoring and generating torque;

  • Hybrid-enabled Hydra-Matic 4T45-E electronically controlled four-speed automatic transaxle that includes an auxiliary oil pump and unique hybrid controls.

GM is using the BAS-based Greenline hybrid system to try to deliver a simple hybrid architecture flexible enough—and at a sufficiently low cost—to implement globally on a broad spectrum of both powertrains and vehicles.

The Saturn VUE hybrid offers an estimated 29 mpg US combined and is priced at less than $23,000, compared to the Ford Escape hybrid with 33 mpg US combined at a starting price of $27,500. The Toyota Highlander and Lexus Rx 400h both are rated at 30 mpg US combined, and priced at $33,000 and $48,500 respectively.

GM has yet to indicate performance specifications on the Aura Greenline or pricing.

April 12, 2006 in Hybrids | Permalink | Comments (30) | TrackBack (1)

Comments

Check out this link:

http://www.pureenergysystems.com/news/2004/08/27/6900038_SolarHydrogen/index.html

You can also google "solar hydrogen".

Posted by: ghent | January 12, 2007 at 12:42 PM

General motors had an opportunity to be American heroes.
The most effective way to attack terrorism is by taking away their funding. Electric cars can be charged with any source of power availiable, solar, wind, nuclear, geo thermal, and in the future possibly fusion. We can also charge electric cars from coal and oil burning power plants equipped with the latest in clean burning technology. American innovation is being killed by greedy corporations combined with the "couch potato apathy". From a strictly scientific point of view electric cars are more efficient than gasoline cars and they are cleaner. How they are charged, is up to our future generations. I think it is only fair that we give our children a decent choice, and a decent chance.
Filling our gas tanks with dead soldiers every day
is anything but decent.
GM Anti Innovation = AntiAmerican.

Posted by: Jon Boston | January 26, 2007 at 06:36 PM

General Motors (MeToo Motors) has always been a copy cat and never leads in technology except when they produced the EV1 and their other electrics. They sold out to the oil companies by literally selling the NIMH battery patent to Mobil Oil.

Now, they scam the public with the E85 propaganda.
Fact is that it takes more energy to produce ethanol than is recovered from combusting it in an ICE.
GM knows this fact.

You gotta ask why? Is it to support the US farmer? Check to see who owns the largest intrest in the ethanol plants.
...afterall cheap ethanol can be bought from Brasil

Produced hydrogen for use in fuel cells will never occur due to the infrastructure , transport, storage, production problems.

However, the future will be an electric vehicle with an onboard fuel cell running on a liquid hydrocarbon such as ethanol, methanol, or refined fossil fuel. see methanol fuel cell technolgy .. Ballard Power, Toshiba

GM presented the Volt concept vehicle but claimed the battery technology is not availble. Tesla motors has long range electric vehicles.

GM is presently busy trying to capture the auto market in China. They see a market sales potenial of 200million vehicles per year. GM has exported the North American jobs to secure the market.
Here are the issues,,, 90 percent of the gasoline in the world is consumed in North America ....if China comes on line, fuel capacity is finite...we must go without
China is notorius for stealing technology and producing in country copies ...refer to the dvd piracy issue
..in all when the auto industry is established in China
there is no need to buy forgien (GM) products

Posted by: Gerry | February 18, 2007 at 09:02 PM

Well I actually sat in this car at the Detroit auto show and it's really quite nice. I would totally consider buying one. Of all the hybrid sedans, this one allows one to lower the back seats and have a decent size pass-through to the trunk. The car obviously is not as high-tech under the hood as Toyota's system, but then it only costs a few HUNDRED dollars over a standard base version of the car (when you consider the Greenline package adds Stability Control and other features not available on the base model, in addition to the hybrid system [a Pontiac G6 for comparison]). GM has taken a 180 degree approach here -- develop a simple, affordable system that gives about 80% of the benefit of a hybrid powertrain for only a few hundred more. Honda/Toyota/Ford have a more advanced system available, but it costs several thousand dollars more than the standard powerplant. In environmental terms, this is an imperfect, cost-conscious world and I think it would be far better to have fleets of these more affordable BAS-type hybrids on the roads rather than a fewer number of the advanced full-hybrid models. GM should offer this system across the board. Future vehicles should no longer idle -- the fuel saved would be incredible.

Posted by: Paul | March 06, 2007 at 01:48 PM

Meanwhile, it is May 2007, and the Aura Green Line is still not available at dealerships anywhere.

Posted by: Joe | May 12, 2007 at 01:07 PM

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Listed below are links to weblogs that reference GM Saturn Aura Greenline Hybrid on Sale in 2006:

» 2007 GM Saturn Aura to be Available as Hybrid from Treehugger
At the New York Auto Show (April 14-23), GM is unveiling its new 2007 Saturn Aura. A mid-size sedan that will be available as a "Green Line" hybrid model later in 2006. The hybrid technology used will not be the "full" hybrid used by Toyota and Ford, ... [Read More]

Tracked on Apr 12, 2006 1:35:44 PM

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