Battery based electric vehicles of today and tomorrow.

[3930dave]

EV battery health is about the only important EV concern in my view and that concern drops in each new model year.

ICE engines are relatively easy for a competent mechanic to evaluate.

Insane Mode + Ultra-Fast Charge ?

I'd like to have access to the data (I'm sure T does) concerning what % of time the HV pack spends in those high-current conditions, and others like Towing etc...

Rgds, D.

 

[3930dave]

Bolt 'hill mode' isn't a thermal issue, rather, the driver should expect regenerative braking to work the same under all conditions. But the Bolt's regenerative braking disappears if the battery reaches 100%, as it might going down the mountain. Just when you want that braking assist most.

Hill mode, which is not charging to 100% before starting down the mountain, avoids the loss of that braking feature halfway down the grade.

I looked hard at Bolt when they came out. But the lack of cargo capacity and the uneven cargo floor were deal killers. More recently the battery spontaneous fires are a second reason to avoid Bolt until they get that worked out.

Retain one-pedal driving.... got it, thanks.

Second thought... still thermal . Locomotives had/have huge banks of resistors in the roof to handle E braking.... but they'd be a hard sell on the roof of a compact-car.....

Rgds, D.

 

[MossRoad]

My employer is allowing an EV vehicle manufacturer to place recording devices in the ODBII ports on may of their fleet vehicles to gather information about driving data to see if EV's wound be good replacements for the current ICE vehicles. With my short runs and frequent long stops, I wouldn't mind one at all.

 

[Jstpssng]

My employer is allowing an EV vehicle manufacturer to place recording devices in the ODBII ports on may of their fleet vehicles to gather information about driving data to see if EV's wound be good replacements for the current ICE vehicles. With my short runs and frequent long stops, I wouldn't mind one at all.

I don't mind at all when somebody buys me a vehicle, either. I just say "Thank you very much." I put about 30k miles per year on my company truck, and can use it for personal use for less than it costs me to run my own truck.

 

[California]

... Locomotives had/have huge banks of resistors in the roof to handle E braking....

I read that's why you always see a diesel locomotive behind the steam engines that are restored and run on the main lines for publicity. Modern signal electronics could be put on a steam locomotive, and air brake technology hasn't changed, but that resistance braking is needed for safe operation.

 

[MossRoad]

I read that's why you always see a diesel locomotive behind the steam engines that are restored and run on the main lines for publicity. Modern signal electronics could be put on a steam locomotive, and air brake technology hasn't changed, but that resistance braking is needed for safe operation.

In the thread about the Big Boy, I thought it said they put the diesel electric there for the braking to save the brakes on the Big Boy, not so much because it was safer, but because the brakes on the Big Boy would be insanely expensive to replace.

 

[Gale Hawkins]

9 past mistakes offer lessons for today’s hot new automakers

New century Old mistakes?

 

[Grumpycat]

My choice of port-fuel injected gas engine and stick transmission - in that case, none. Present-day GDI and lousy automatics that certain manufacturers produce, I'd assign at least 50% of their value at that point.

I get it, EV'ers want to ignore battery replacement cost, esp. when buying new..... treated like cell phone ownership, it's a non-issue.

An EV @ 100k, I'd allow for 50% of the battery cost.

Rgds, D.

What evidence do you offer in support of your conclusion? You say there is a 50% failure rate at 100,000 miles no matter the cost is 100% covered for 8 years/100,000 miles? Or 10 years/150,000 miles in some states?

Nissan's battery is atypical. And apparently GM is also flying fast and loose with their battery.

Tesla has had battery failures prior to 100,000 miles. But Ford, GM, FCA, BMW, Porsche, Mercedes-Benz, Toyota, Hyundai, Kia, all have had similar failure rates with engines.

At 8 years my Tesla battery has 95% of it's original capacity.

 

[3930dave]

My employer is allowing an EV vehicle manufacturer to place recording devices in the ODBII ports on may of their fleet vehicles to gather information about driving data to see if EV's wound be good replacements for the current ICE vehicles. With my short runs and frequent long stops, I wouldn't mind one at all.

Know Thy Customer..... sounds like a great way to verify product/application match.

Rgds, D.

 

[3930dave]

I read that's why you always see a diesel locomotive behind the steam engines that are restored and run on the main lines for publicity. Modern signal electronics could be put on a steam locomotive, and air brake technology hasn't changed, but that resistance braking is needed for safe operation.

Diesel locomotives went hybrid drive long before the term fell into common use..... all they really had to do with the modern (defined) hybrids was allocate space for batteries.

Haven't tried digging for this, but a wild guess would put money on still having resistor load banks on the latest ones..... either that, or they don't run the Rockies, for the reasons you walked us through on the Bolt.

Rgds, D.