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Malibu and VUE Hybrids: Belt Alternator Starters, BAS or BS?

8.4K views 54 replies 42 participants last post by  surferdude00711  
#1 · (Edited)
Belt Alternator Starters: BAS or BS?
www.hybridcars.com

What is all the recent hype about belt hybrids? Is it going to shatter the world of hybrids? Hardly. The belt system, Belt Alternator Starter (BAS), planned for the Saturn VUE Hybrid and other hybrids, is the least a carmaker can do, and still claim the hybrid badge. It's the answer when cost is the major decision factor. As others have said about this approach, you get what you pay for.

The concept is to replace the belt driven alternator with an electric motor that serve as a generator and a motor. Thus when the engine is running the motor, the generator will charge the battery. When the engine needs to be started, the motor then applies its torque via the accessory belt, and cranks the engine instead of using the starter motor.

In this scheme, the motor/generator can be made larger than a standard starter motor so more torque can be generated when in the motoring mode. This allows for quicker starts of the engine, and makes the start/stop operation possible. Stopping the engine while vehicle is at idle is a means to conserve fuel. The disadvantage to this type of system is that you notice the engine starting and stopping. The control system for this technology so far has been somewhat crude in comparison to the full hybrid engine startups and for some people it could be annoying.

The belt is a short-term solution to get 2% to 5% increase in fuel economy and it mostly affects the city mileage with hardly any effect on the highway mileage. On extremely small vehicles, the belt alternator starter might nudge a vehicle into the mild hybrid category. Otherwise, consumers should know that dealers describing vehicles with this technology as hybrids are full of BAS.

Source: http://www.hybridcars.com/belt-alternator-starters.html

Also See: http://forums.gminsidenews.com/showthread.php?t=8333&highlight=2007+malibu+hybrid

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#2 ·
Sounds to me like GM has given us yet another reason to criticize them.

Seriously, why are you going to half-ass a hybrid system into a vehicle to gain 2% to 5% in fuel economy. So that's what, at the very best, instead of getting 20 mpg, you will be getting 21 mpg. And with this, you have the annoyance of hearing the engine shut on and off periodically???? No thank you.
 
#5 · (Edited)
It would make an appealing STANDARD add-on to Malibus to set them apart from other sedans, and would give another reason to buy a GM car, but would stink if made a pricey option. And in the Malibu's case, if mated to a 4-speed tranny that gets 5% worse fuel economy than a 5 or 6 speed auto, it makes very little sense. Just buy the import with the tranny with more gears and better fuel economy, that's what folks will do.
 
#6 ·
GM has 5 speeds on the way and I can't see GM charging much for this kind of mild hybrid technology.

I think it makes a lot of sence to make it standard add the cost to the base price and bill it as a very fuel efficent sedan (Malibu) or SUV (VUE).

A Malibu Sedan with 25/35 would look great in an ad.
 
#8 ·
Nice technology and 5% improvement is 5%. It represents a great improvement for a normal vehicle (aka - non-hybrid). However, you can not sit around a badge these improvements as a hybrid. The minute GM stacks their hybrid Malibu next to a Prius, all remaining credibility will be totally lost. This is similar to DoD, in that it helps, but is really not using an alternative method to provide power. It is simply using less fuel through the same system.
 
#9 ·
dindak said:
GM has 5 speeds on the way and I can't see GM charging much for this kind of mild hybrid technology.

I think it makes a lot of sence to make it standard add the cost to the base price and bill it as a very fuel efficent sedan (Malibu) or SUV (VUE).

A Malibu Sedan with 25/35 would look great in an ad.
Why would BAS increase highway mileage? I don't think this will affect fuel economy at all. 2-5% of 20mpg is 0.4 to 1.0 mpg. And that's assuming you actually come to a complete stop, and stay stopped for a length of time. I would think that startup would use more fuel, then idling, for very short stops.

and if they do offer this as standard, please DO NOT raise the price of the car. Some of GM's MSRP's are already too high as it is.
 
#10 ·
If this is combined with DOD, I can see this having some appeal if there isn't any extra charge on it, but I'm sure there will be.
This is the essence of GM laziness: playing catchup, and trying to do it as cheaply as possible, whether it actually makes for a decent product or not. Obviously GM is looking into the distant future with the hydrogen cars and what-not, but I can't see why they dodn't have the foresite to find a stop-gap in between. Had they utilized some tech from the EV1, at least then they would have something really different. But instead they push this lame attempt at reconciliation on us, and it's not even avaialbe for another two years. By then Civics will be powerfed by cold fusion, and Tundras will get 80 mpg. Sorry for the rant, just tired of GM bringing up the rear in technology solely because of lack of effort.
 
#11 ·
dindak said:
GM has 5 speeds on the way and I can't see GM charging much for this kind of mild hybrid technology.

I think it makes a lot of sence to make it standard add the cost to the base price and bill it as a very fuel efficent sedan (Malibu) or SUV (VUE).

A Malibu Sedan with 25/35 would look great in an ad.
Yeah, 25/35 for a 3.5-liter V6 and 200 horses would be a major asset for GM. Even so, the current Malibu gets a nice 22/32 for a 200 horse V6 engine. Thats really good gas mileage there.
 
#12 ·
BAS or BS? I say BS.

When the engine isn't running the A/C compressor and power steering pump aren't working (unless a hybrid compressor is used like in the hybriid Accord), which are important while idle. I can't see this being anything close to smooth-operating either. What's so hard about developing at LEAST a system like that in the hybrid GMT-800s? A new CVT or 6-speed transaxle with an electric generator/motor on the flywheel instead of a starter, some LiIon batteries under the rear seat and hybrid accessories (A/C compressor, power steering pump) seem quite easy and would give a 15% yeild in economy when combined with a good ECM program, and it could fit in pretty much all FWD GMs. I don't get it.
 
#16 ·
I remember seeing the Full Hybrid Powertrain display for the VUE/Malibu @ NAIAS '03, 2nd Floor of the GM Pavillion. 20 - 30% increase in fuel economy. Then It was dropped for this belt alternator thing?

GM, you might as well bring over from Europe a 2.0L TDI unit for the belt
alternator to get any decent Mileage #'s. Otherwise, the biased automotive press will just rip you to shreds......................................


Ken
 
#18 ·
This would be another opportunity for the press to tear GM a new one for taking (what sounds..) like a short cut on this sort of technology. I agree with what another poster said, If Toyota, Honda, and even Ford can do it, there should be no reason GM can't. IMO its crap they would think this a viable option, especially after Toyota,Honda & Ford have come to market with these seemless/imperceptible systems.
 
#20 ·
As I am writing this GM's bond rating has been lowered to JUNK STATUS! With this stupid half a$$ed attempt at a hybrids I see why the world has turned it's back on this company.
With this latest decision I would suggest the GM board to ask for the resignations of its top brass. Is anyone looking at the lost market share, the lukewarm receptions of it's newer products, and yes the critics views of what is happening at that company? When you are falling off a cliff you can't afford to piss around. This is not about God Bless America or Past Glories, this is about the 300,000 people that GM is supporting with there success. They are failing us all.
 
#23 ·
Reviewers said the Honda system is rather jerky in stop/go situations. I see this being similar in that regard.

For the 2007 model year, Hyundai, Kia, and Nissan will have full hybrids. Toyota will have the hybrid Camry and GS.

As far as I've read, GM never said that it's full Hybrid SUVs will be available from launch, so who knows what year we'll see them.

On top of all that, we heard about this belt system, like what, over a year ago? It sure takes GM a long time to make baby steps. Chrysler beat it with DoD V8s and Honda beat it with DoD V6s.

And how many years ago did we hear about that joint venture with Ford to develop 6-speed automatics for FWD? Ford saw the time delay and bought trannies as a stop gap. GM was a bit more myopic.
 
#26 ·
dindak said:
GM has 5 speeds on the way and I can't see GM charging much for this kind of mild hybrid technology.

I think it makes a lot of sence to make it standard add the cost to the base price and bill it as a very fuel efficent sedan (Malibu) or SUV (VUE).

A Malibu Sedan with 25/35 would look great in an ad.
GM has lots of stuff on the way, problem is they never get it here, on by the time it gets here, people have moved on...