HEV battery only miles ? - Page 4 - Hyundai Ioniq Forum
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post #31 of 56 (permalink) Old 24-05-19, 02:33 AM
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The point about Regen is that you are recovering energy that in a conventional ICE car is totally lost. This is a significant bonus.
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post #32 of 56 (permalink) Old 24-05-19, 10:10 AM
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Well put Chui. The people that are slinging around terms like idiot on this thread probably didnt think of that; but thats exactly what I and SEvans meant.
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post #33 of 56 (permalink) Old 24-05-19, 01:40 PM
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https://x-engineer.org/automotive-en...sumption-bsfc/

Hybrids get mileage boosts by keeping the engine at the most efficient point in the BSFC curve for the current RPM - the computer also modulates the selected gear on order to maximize engine efficiency. The excess energy generated by this is used to charge the battery. When running on the battery, you are getting that 'saved' efficiency back ( minus battery losses)

As far as heads of state using EVs - not going to happen until you can charge as fast as topping off your fuel tank.
For the Trump comment about not taking a train - doesn't seem like you have ever been to the US, and specifically the DC area. The US is much different than Europe - things are spread out much more so public transit is tough except in the highest density cities.
I would actually like to see him take the metro - it would stall everything in DC for days (less days for them to raise taxes to pay for pet projects that achieve nothing more than gathering votes)
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post #34 of 56 (permalink) Old 24-05-19, 02:27 PM
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Well put Chui. The people that are slinging around terms like idiot on this thread probably didnt think of that; but thats exactly what I and SEvans meant.
Perhaps that is what you meant, but not what was said.
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post #35 of 56 (permalink) Old 24-05-19, 05:03 PM
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It's not my job to teach English comprehension

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post #36 of 56 (permalink) Old 24-05-19, 08:47 PM
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The HEV doesn't rely on the petrol engine all the time for charging. Downhill and braking contribute quite significantly to recharging the battery
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It's not my job to teach English comprehension
One wonders how you can get up the hill, or get up to speed and then brake. All motive force comes from burning petrol. Some of that motive energy is saved by the battery and used later. I'd say it is a good thing you don't teach English comprehension (or physics). I will admit I cannot parse SEvans' contribution but he also seems to be trying to say that the battery charge doesn't come from running the engine in an HEV.
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post #37 of 56 (permalink) Old 25-05-19, 02:43 AM
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The concept of energy recovery is so simple.To put it into the terms that this forums juveniles might understand, if you return an empty soda bottle to obtain the deposit do you or do you not finally have more pocket money than you had prior to the return( provided that you haven't paid out for mind altering drugs in the meantime of course).

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post #38 of 56 (permalink) Old 25-05-19, 07:54 AM
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One wonders how you can get up the hill, or get up to speed and then brake. All motive force comes from burning petrol. Some of that motive energy is saved by the battery and used later. I'd say it is a good thing you don't teach English comprehension (or physics). I will admit I cannot parse SEvans' contribution but he also seems to be trying to say that the battery charge doesn't come from running the engine in an HEV.
No, that's NOT what I'm saying - If you want to put words in my mouth you'll need a dress and a ring, as only my wife gets to do that...

I have said very precisely what I mean. If you don't understand then you may `ask`, rather than `tell`. Happy to offer clarification for the hard-of-understanding...

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post #39 of 56 (permalink) Old 25-05-19, 08:12 AM
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The concept of energy recovery is so simple.To put it into the terms that this forums juveniles might understand, if you return an empty soda bottle to obtain the deposit do you or do you not finally have more pocket money than you had prior to the return( provided that you haven't paid out for mind altering drugs in the meantime of course).
You had to pay for that bottle first, just as you had to climb the hill to go down. In the long run it’s zero gain game. What’s difficult in comprehending this?

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post #40 of 56 (permalink) Old 25-05-19, 08:24 AM
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Originally Posted by coverman View Post
The concept of energy recovery is so simple.To put it into the terms that this forums juveniles might understand, if you return an empty soda bottle to obtain the deposit do you or do you not finally have more pocket money than you had prior to the return( provided that you haven't paid out for mind altering drugs in the meantime of course).
The bottle analogy only holds if you consider it only applies to bottles that you bought.

The HEV Ioniq can't find free empty energy bottles lying on the side of the road.

If you buy a bottle of soda (like buying a tank of gas) it costs money. If you return the bottle to get the deposit back (recovered energy) you have more money in your pocket at the end than if you didn't, so it's definitely the better thing to do, but you will never have more money in your pocket than when you started, because the only way you can have bottles to turn in is by buying full bottles to start with.

To extend the analogy, the PHEV is like having a supply of empty bottles also available. If you keep getting these empties and turning them in (plug in charging), you can drive without having to buy new, full bottles or depending on your driving needs, buying them less frequently.
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