2006 HCH Electric Only Mode Operation

[fillerup]

http://www.greenhybrid.com/discuss/ev-elec...6-hch.4635.html

[Tideland Prius]

ooh exciting! Now there'll be friendly competition lol.

[LaughingMan]

Looks interesting indeed.

Seems to be a bit of excitement that they might be able to pulse and glide faster than the 40 MPH limit that the Prius basically imposes. Very interesting.

[john1701a]

"Enhanced Assist" is the most appropriate term for this new mode.

It is definitely nothing like stealth.

[ScottY]

Originally posted by LaughingMan@Nov 21 2005, 11:07 PM
Looks interesting indeed.

Seems to be a bit of excitement that they might be able to pulse and glide faster than the 40 MPH limit that the Prius basically imposes. Very interesting.

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I don't think they can do EV mode at higher speed than the Prius. Quote from that site about EV mode,

It always happened in the 25-30 mph range and I had to hold the accelerator very steady. The slightest extra pressure or moderate incline would make it start sucking gas again

[LaughingMan]

Originally posted by john1701a@Nov 21 2005, 11:44 PM
"Enhanced Assist" is the most appropriate term for this new mode.

It is definitely nothing like stealth.

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I read the whole thread.

There was some excitement because at first, it seemed like it was possible to use this mode at any speed, creating the possibliity of high speed pulse and glide technique. The Prius stealth mode facilitates pulse and glide up to 40 MPH, afterwhich the engine will start to turn over no matter what.

But it seems like from their tests, they are able to achieve electric only at highway speeds, but due to the higher speeds, the spinning engine, speed bleeds off quite quickly without significant assist, ie. use of the battery. The engine turning over probably does have a significant effect.

So while it is promising, it's not everything they were hoping for.

That being said, the new civic drivers seem to be doing pretty fairly with their mileage. Averaging high 40s and 50s judging from that thread.

[LaughingMan]

Originally posted by ScottY@Nov 21 2005, 11:50 PM
I don't think they can do EV mode at higher speed than the Prius. Quote from that site about EV mode,

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i think what they meant was that you can't accelerate with EV only. The question has been whether they can achieve EV at high speeds and use it to maintain speed. They are exploring the possiblities of the 'glide' part of pulse and glide with the new HCH.

The Prius has been able to use battery power only at even highway speeds, but the ICE must turn over, even though it is not burning any gas... similar to the HCH-II. Extended use of the battery power only mode at highway speeds will obviously drain the battery, so it's not sustainable.

[ScottY]

Originally posted by LaughingMan@Nov 21 2005, 11:56 PM
I read the whole thread.

There was some excitement because at first, it seemed like it was possible to use this mode at any speed, creating the possibliity of high speed pulse and glide technique. The Prius stealth mode facilitates pulse and glide up to 40 MPH, afterwhich the engine will start to turn over no matter what.

But it seems like from their tests, they are able to achieve electric only at highway speeds, but due to the higher speeds, the spinning engine, speed bleeds off quite quickly without significant assist, ie. use of the battery. The engine turning over probably does have a significant effect.

So while it is promising, it's not everything they were hoping for.

That being said, the new civic drivers seem to be doing pretty fairly with their mileage. Averaging high 40s and 50s judging from that thread.

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You are right. After reading further into the thread, they were saying they can do EV mode at 60MPH with little downgrade.
I hope this competition can lead to better hybrids (better I don't mean more hp <_< ).

[daniel]

Whoop-de-doo!!! They can maintain quasi-EV mode for 30 seconds. As long as they don't try to accelerate. But can they get in it and drive it a block or two without ever starting the engine? Or will it shut the engine off and leave it off for that stop-and-slow traffic jam?

The Civic is a great car. But the HCH is just a Civic with an electric assist. The Prius is tomorrow's car today.

[OnTheFence]

Originally posted by daniel@Nov 21 2005, 10:26 PM
Whoop-de-doo!!! They can maintain quasi-EV mode for 30 seconds. As long as they don't try to accelerate. But can they get in it and drive it a block or two without ever starting the engine? Or will it shut the engine off and leave it off for that stop-and-slow traffic jam?

The Civic is a great car. But the HCH is just a Civic with an electric assist. The Prius is tomorrow's car today.

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If most people get the same mileage in HCH-II vs. Prius, what difference does that make? Granted, there aren't many cars in the database yet, but as of now, HCH-II owners are averaging 45.2 in the winter!