AD #2166 – Secondary Loop A/C System, Continental’s Wild Wheel & Brake Combo, Hot Stamping Gets Cold Shoulder

August 10th, 2017 at 11:45am

Runtime: 8:34

To watch this episode on YouTube click here.

- Tata & MAHLE Develop Secondary Loop A/C System
- Continental’s Wild New Wheel Concept
- Steel Industry Develops New High-Strength Steel
- Tesla to Test Electric, Autonomous Semi Truck
- 2018 Ford F-150 Powertrain Updates
- Mazda’s Take on California’s Goals

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14 Comments to “AD #2166 – Secondary Loop A/C System, Continental’s Wild Wheel & Brake Combo, Hot Stamping Gets Cold Shoulder”

  1. Albemarle Says:

    Robert Davis is busy preaching to the choir. Unfortunately the future is moving in another direction. Can’t see his arguments swaying CARB and post Trump, the EPA. I think he is backing Mazda into a corner.

    Saw something interesting about 2021 and later regulations about pickup truck emissions only being cleaned up then. Is this correct?

  2. BobD Says:

    I thought it was already a given that one of the benefits of EV and strong hybrids cars were “life time” brakes (or nearly so)? So is Continental just pushing the obvious? If their system is lighter, that does seem to be a plus for fuel economy and to reduce sprung wait. However, with the huge, unconventional bolt circle, good luck on finding a tire shop that can change tires or balance such a wheel unless there is significant adoption of the design.

  3. Lisk Says:

    I like the Tata idea for the A/C but I think the time it will take to cool the liquid medium will negate any real advantages. Look at how long a car takes to get a heater up to it’s full potential. People can deal with a cold car but when you pop into a car that has an inside temp of 140 or so degrees, you want it to start cooling down right now. The “slightly more flammable” bring additional worries…

  4. Chuck Grenci Says:

    I don’t know whether adding another heat exchanger to an already fairly complex system is worth the cost for that residual cooling that the liquid based system would provide. And Lisk has a very good point; quick cooling is a real advantage when you want that vehicle cooled down fast. Maybe just maintain the current flow and add heat sinks (cold reservoirs) to the evaporator; that would do the same or almost the same of providing a longer lasting cooling effect.

  5. John Faulkner Says:

    Thank you to the Department Of Energy for supporting the research and development of the new high-strength cold stamping steel technology. Please be aware that DOE funding like this, that advances society, is on the chopping block. Let your representatives know how important it is not to cut their budget.

  6. Sean McElroy Says:

    @BobD – One of the things Continental points to in the press release is that steel rotors can rust on EVs because they use the brakes far less. I will say, I’ve not heard of this being an issue. Also, there would be no issue with current tire machines to dismount/mount a new tire on one of those wheels. You do bring up a good point with balancing. But if the center spoke (star) section can be removed from the hub with the wheel, it would not be a problem to balance.

  7. Lambo2015 Says:

    I would hope that Robert Davis realizes that decommissioning excess power plants would be an attractive idea coming from Exxon Mobile. An argument could be made that converting these old coal power plants to CNG or replacing them with greener technology would be just as important.
    Excessive electric power is not driving the hybrid or EV industry other than keeping the price down making it a viable solution. Sure (Exxon) close some electric plants increase the KW price a bit and soon EVs don’t have any advantage over oil.

  8. Buzzerd Says:

    Brakes- Buell used a similar system on some of their bikes, seemed like a good idea but no one else has adopted it soooo I suppose it wasn’t.

  9. Lambo2015 Says:

    Displacement emissions can also have its advantage.
    A 10 year old Zero emission vehicle does not increase emissions output over time, unlike the ICE. Also as new regulations are passed an old oil burning vehicle does not get updated leaving lots of vehicles on the road not meeting the current emissions requirements. Imposing the requirements on the power plants makes all the EV’s pollute less immediately regardless of their age.

    No need to have another government funded clunker buy back to get old vehicles that pollute the most off the road.

  10. Kit Gerhart Says:

    #6 The thing I’ve heard of with brakes on high mileage, 10-12 year old Priuses in the “rust belt,” is that pistons stick from corrosion, while tbe linings and rotors are still ok.

  11. Chuck Grenci Says:

    GM has a duro-life rotor and I’m sure others could follow; that should make the rust factor moot.

  12. Ukendoit Says:

    The most often complaint I hear about electric cars is the “just shifting the pollution” argument, but to me that does not hold much weight. It has already been shown that electric vehicles don’t use any more electricity than a hairdryer and won’t cause excessive demand on the grid, and it would be much easier to then regulate and “clean up” the non-green power plants than it would be to regulate millions of used cars across the country (or world).

  13. Lambo2015 Says:

    One more comment on the (so called) excessive electric power. I would find it hard to believe that the power companies are producing much more electricity than demand requires. So I assume he meant excessive capability. Which if that is the case then there would be no such thing as a brown out. I just feel the findings to have a hidden agenda. When in doubt consider the source.

  14. Terry Says:

    I’d like to see Autoline expand on their comment “slightly more flammable.” Traditional refrigerants are not flammable at all, so nothing that is flammable could be described as “slightly more.” Some of the replacements being proposed and used because they have lower greenhouse gas potential are highly flammable.