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General Automotive General automotive discussion. This is intended to be a discussion about other not VW and Diesel cars you may have or interested in.

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Old November 16th, 2019, 18:39   #5101
rotarykid
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I have been reading about mild hybrid setups being installed, factory-installed to the current tdi's being sold in Europe.

Is there anything like a kit that can be installed on any of our TDI cars with a generator alternator and a pack of batteries to turn our vehicles into mild hybrids upping their mileage & maybe increasing their lifespan.?...

And also allowing us to use stop-start without damaging our current starters.?...
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Old November 17th, 2019, 06:00   #5102
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Quote:
Originally Posted by rotarykid View Post
I have been reading about mild hybrid setups being installed, factory-installed to the current tdi's being sold in Europe.
Is there anything like a kit that can be installed on any of our TDI cars with a generator alternator and a pack of batteries to turn our vehicles into mild hybrids upping their mileage & maybe increasing their lifespan.?...
And also allowing us to use stop-start without damaging our current starters.?...
I would imagine cobbling up something like a kit would be uber expensive and would negate any savings. It would be nice though. I've got almost 57,000 miles on the Volt, but only 12,500 on the ICE.
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Old November 17th, 2019, 06:38   #5103
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The big thing about putting motors on the belt drive is that you may have to change how the belt is tensioned, depending on its path. Conventional belt drives are designed around the engine generating positive torque, and the accessories generating negative torque.

The moment you have an accessory generating positive torque, you have to consider that in your tensioning system, and that makes retrofit belt-drive hybrids very difficult. (Note that XL Hybrids does have a system that mounts on the output shaft of RWD pickup transmissions, and that seems to provide noticeable benefits in city driving.)

Additionally, you have to control this thing. How do you determine when to regen, and when to boost? A nave approach would be to simply regen either whenever 0% throttle is requested, or whenever the brakes are applied (note that this creates very inconsistent brake feel if your regen is binary!), and boost at certain throttle settings (a very nave approach would be to boost at low throttle... this may actually hurt efficiency by encouraging low engine power settings! A better nave approach would be to boost at high throttle).

(Worth noting that production hybrids use hybrid power at low power settings... but the engine is off. That greatly improves efficiency if you can do that, but a retrofit system can't easily do that, and it definitely can't if it's on the accessory belt drive.)

And, you have to interface all of this with the rest of the vehicle systems, of course. Easiest way would be to intercept the throttle and brake signals, but all of this will be vehicle-specific.
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Old November 17th, 2019, 12:36   #5104
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There is an outfit in California that electrifies classic dubs for about $60-85K.

https://www.zelectricmotors.com

I don't know anything about them other than finding that site years ago.
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Old November 18th, 2019, 08:17   #5105
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I think they're the one that popped up on facebook offering a 68 (?) fully restored Beetle but with a Tesla motor.
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Old November 18th, 2019, 09:42   #5106
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A lot of their conversions don't chop up anything and are fully reversible. Pretty cool if you're converting an old Porsche or something that may skyrocket in value down the road.
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