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Old April 27th, 2018, 08:17   #1
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Default VW Still Believes In Diesels; Unveils New 2.0 TDI Mild Hybrid

Diesels are dying? Not so fast, says Volkswagen.
https://www.motor1.com/news/240543/v...gine-revealed/
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Old April 27th, 2018, 09:10   #2
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Finally!
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Old April 27th, 2018, 12:29   #3
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https://www.cnet.com/roadshow/news/v...CAD-16-10abc4e
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Old May 7th, 2018, 06:41   #4
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Better news if it can find it's way across the permanent puddle. Wasn't the diesel hybrid part of the original concept behind the Atlas?
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Old May 7th, 2018, 08:29   #5
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Now if someone will come up with an 'electric delete' for it . . . :-) :-)
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Old May 7th, 2018, 16:13   #6
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Quote:
Originally Posted by tadawson View Post
Now if someone will come up with an 'electric delete' for it . . . :-) :-)
Then it won't start or charge because it replaces the function of the starter and alternator. You could put in an older bellhousing and conventional starter and maybe fit an accessory bracket from an older car with a conventional alternator, but who knows if the ring gear teeth on the flywheel will still exist...
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Old May 7th, 2018, 16:23   #7
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I'm all for a BAS system, although I question the utility of so much work being expended just to turn a non-firing engine in the 48V systems that have an e-drive mode (this TDI mild hybrid will not so I digress, but the 48V one used in the V6 TDI apparently will). More elegant would be to have the e-motor/generator in the bellhousing replacing/augmenting the clutch or torque converter.

I thought of doing a poor-man's regenerative retarder using a high-amp 12V alternator that is common in competition sound system circles. I'd add a bank of 18-20V li-ion batteries but nominally maintaining a ~60% SoC and standard 14.4V voltage. When I'm coasting or press a steering wheel button, the alternator would kick into full 18V and full amperage (300A is not uncommon), giving me 5.4 kW of retarding power that charges up the batteries. I can then descend down pretty decent grades without touching the brakes and recuperating the electrical energy as a bonus.
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Old May 9th, 2018, 04:11   #8
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Aircraft starter motors are also alternators generating power. Ram is using a similar system for their new 2019 1500 Hybrids. The technology is coming.
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Old May 9th, 2018, 06:21   #9
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Aircraft starter motors are also alternators generating power. Ram is using a similar system for their new 2019 1500 Hybrids. The technology is coming.
For 2019, the hybrid option won't be available on the ecodiesel. At least that's what the current press is saying.
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Old May 10th, 2018, 17:45   #10
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Quote:
Originally Posted by TDIMeister View Post
I'm all for a BAS system, although I question the utility of so much work being expended just to turn a non-firing engine in the 48V systems that have an e-drive mode (this TDI mild hybrid will not so I digress, but the 48V one used in the V6 TDI apparently will). More elegant would be to have the e-motor/generator in the bellhousing replacing/augmenting the clutch or torque converter.

I thought of doing a poor-man's regenerative retarder using a high-amp 12V alternator that is common in competition sound system circles. I'd add a bank of 18-20V li-ion batteries but nominally maintaining a ~60% SoC and standard 14.4V voltage. When I'm coasting or press a steering wheel button, the alternator would kick into full 18V and full amperage (300A is not uncommon), giving me 5.4 kW of retarding power that charges up the batteries. I can then descend down pretty decent grades without touching the brakes and recuperating the electrical energy as a bonus.
I've thought on it too, with some big fat supercapacitors in the mix to suck up the fast spikes of power needed and produced. Some companies make wheel motors that bolt on, could be tossed onto the rear axle real easy.

Finally decided that nah, too much effort.
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Old May 21st, 2018, 06:40   #11
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Yup, the diesel hybrid that pulls 60-125 mpg, with less emissions in the promise? Holy crap let's go already...You know GM won't do it.
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Old Yesterday, 17:21   #12
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Quote:
Originally Posted by [486] View Post
I've thought on it too, with some big fat supercapacitors in the mix to suck up the fast spikes of power needed and produced. Some companies make wheel motors that bolt on, could be tossed onto the rear axle real easy..
sort of like the old GT3 Hybbrid, you could use a flywheel. i'd swear it looks like one aboard the VW Pikes Peak entry, in pssgr seat.

in the end, 48v isnt propelling much (vs 300-800v), and it is tough to see modding it to satisfaction. it's pre-prius tech, for a couple more mpgs. cant even get decent regen from that. right?
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Old Yesterday, 19:49   #13
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Quote:
Originally Posted by MrSprdSheet View Post
sort of like the old GT3 Hybbrid, you could use a flywheel.
then you gotta do some oddball stuff with CVTs or maybe an electric motor driving the flywheel and acting as a generator the other way round. Eh, seems easier to just dump the electric into caps and then do whatever with it from there.

Main difference in the high volt stuff versus the low volt stuff is the amperage and therefore size of components required. You can get a lot more wattage through a #1 gauge cable with 400V than with 48V. Same with the transistors in the motor controller, more power through smaller components with higher voltage.

I'm currently picturing a setup at about 60v with 5 batteries. Make up a go pedal with carbon contacts to power it from 2, 3, 4, 5 of the batteries for smoother starts. For winter braking have a separate pedal that shorts the motor to stainless rods as heating elements. Summer braking just use the normal service brakes. Maybe go with an even number of batteries and work out one hell of a series-parallel switch so you get even discharge across the bank.

voila, caveman tech electric car
I've gotta fit my new interstage intercooler, not fiddle with thinking about electric cars, haha
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