GM's eAssist...

[rmay635703]

Originally Posted by cRiPpLe_rOoStEr

Even though eAssist doesn't provide full-hybrid capability, it's still a reasonable improvement that could have been more widespread nowadays.

I was looking at buying a high mile 2013 Malibu eco with e-assist for $1500 with broken ac.

From what I can tell you can’t reasonably keep the ac working in these cars, the hybrid batteries are always failing and there are recalls for fire risk to contend with.

Even though the car runs fine without the hybrid battery once it fails the 12v stops charging.(sound familiar) and no one has come up with a way to bypass

I really would like to get it for an injured relative to use as a winter beater (body is rust free, just high miles) but it’s just too risky to try and keep one of these running and on the road

[Logic]

Originally Posted by 19bonestock88

So, I read about one of GM's hybrid systems and it looks easy to implement... They have an electric motor attached to its serpentine belt system, which provides additional power to supplement the output of the gas engine under high load conditions... Such system was briefly used in Buick models for a mild boost in fuel economy...

Now, if my L61 never had an A/C compressor, it would be as simple as getting a belt for A/C and mounting the motor in the A/C location, but since I'm not ditching my functional A/C, I'll have to go a different route, using LSJ tensioner, alternator, and idler pulley assemblies, and mounting the motor roughly where the supercharger snout would be on a Cobalt SS(or my Ion Redline)...

The key is finding a motor potent and small enough to fit... Opinions?

NB that sometimes the engine is turning the alternator/motor
and sometimes the motor/alternator is turning the engine.
That means that 1st one side, then the other of the belt will be the slack side.
So you need 2 spring loaded tensioner pullies or it will slip in one direction or the other.

If you look at the crankshaft pulley, is there enough space in front of it to mount a high, car matching, rpm motor?
That saves on belt and extra tensioner pulley losses and no 'is the belt strong enough?'

There's lot's of talk here of "...only 2/4/etc HP...not worth it..."
It's all ill informed nonsense IMHO:
Everyone is relating that HP to the torque of a similarly powered engine.
That is NOT! the case!

There are hotrodded (cooled and overvolted) E-bike motors pushing MORE TORQUE THAN A 1300cc CAR for short ~10 second bursts. (Acceleration is short bursts)
And they do it from zero RPM where an engine cant sharpen a pencil.
ie: The two power types compliment each other beautifully.

A crank or belt mounted motor will have the torque multiplication of the gearbox too, just like the engine, so doesn't need to be large.

How do you plan to control the motor??