Weber State University does P610 deep dive

Thanks for sharing.
Although prof. Kelly stated that the PSD (Power Split Device) was not changed at all since P111 (1st gen) I did find one change: in P610 (4th gen and Prime) the number of planets has been reduced from 4 to 3 ! Since with 3 planets, the torque carrying capacity of each tooth in the PSD (sun, planet or ring) is 1.333 (4/3) times the capacity when using 4, IMO it may indicate increased confidence by Toyota in the PSD service longevity.

 

no idea what i'm looking at, but fascinating nonetheless.
would love to see him compare prius v ionic.

 

Thanks for sharing this. I find it very interesting. Layers of clever engineering.

Simplicity through complexity.

 

A magnet is back to pick up magnetic metal in ATF, last seen in Gen 1.
This has external ATF plumbing, so those of you wanting an ATF filter can add one.
It features no internal coolant, just an external heat exchanger with ATF.
He clearly shows drip tubes cooling M/G1 and M/G2 with ATF.

 

Do not know about the Gen 2 but Gen 3 (P410) does have a magnet at the bottom.

 

The benefit of working near a mag-particle inspection room (ever since the early 1980's) - it's easy to drop off a couple drain plugs so they can get magnetized.

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Many transmissions simply don't have a drain.

 

A manufacturer's fail, is an opportunity for your d.i.y. skills to shine ....



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Wow great video. I'm always fascinated by these.

 

Another one for my collection. These transaxles are amazing.

 

Except in the case that most automatics have a filter to replace, and the pan needs to be dropped either way.

 

I wonder what he does with with the car after he reassembles the transmission. I think he said he has to reinstall it when he has finished his exploration.

I assume the car Is kept as a teaching resource at the college. Is there any way it could be sold? Wouldn't the warranty be voided.

 

It might just be that some these vehicles' parts weren't up to spec, so they're strictly used as demo/teaching models.

Wow, thinking of that stater, & how much of that unit is now copper rods formed into shape & welded into position instead of windings ... what a trip.
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Playing with this to see what's going on. Planetary Gear Simulator (html5 had to use chrome). Never gave much thought to a zero speed combination for mg1 before.
This link has some of the math. Vehicle Power Management: Modeling, Control and Optimization - Xi Zhang, Chris Mi - Google Books

 

The magnet area is considerably larger than the drain bolt cross sectional area, so, may be more effective for "ATF for life".