Featured Hyundai IONIQ - Prius competitor?

Thank you for your explanation. I'm not in the market for a new car but I will have to test drive one at some point. I thought that I read that Ionic has one motor but you are saying that it has 2, one of which is primarily a generator like MG1 in the Prius. So the big difference is the 6 speed transmission and clutch in place of the planetary gears to connect things up. As you say, that difference affects various things such as the speed of the traction motor and the regen braking force. I would love to see the videos if you can find them.

 

Thanks for your comments and explanation. I realize that the U.S. models may differ some. We will have to wait and see.

I wonder how the built in pulse and glide feels to the driver and passengers.

 

never hurts to have a test driver, just to get a better understanding

just don't like it to much and get converted to the dark side

 

I believe in side effects in choosing Ioniq ...like the slightly worse MPG. Not darker, of course!!

 

Thanks for the warning.

Bob Wilson

 

yep, i can confirm that, the state of charge display has 3 sections of 6 segments

on the highway the car will charge to the segment below the top segment in the middle section, then it flips to EV mode until it gets to 1 segment from the bottom of the middle segment then flips back to ICE

on hills it will flip to ICE or ICE + EV depending on the incline

 

Source: Green Car Congress: Hyundai begins rollout of Ioniq Hybrid, PHEV and EV; most efficient non-plug vehicle, most efficient EV in US; powertrain discussion

Hyundai has begun the US sales rollout of its Ioniq line of electrified vehicles, which come in hybrid, plug-in hybrid and battery-electric variants. (Earlier post.) At a media preview in Santa Barbara this week, Hyundai executives said the the hybrid will be moving into showrooms shortly, the battery-electric version in April (in California initially), and the plus-in hybrid in Q4. The Ioniq Hybrid boasts the highest fuel economy in the US (up to 58 mpg) for a non-plug-in vehicle and the Ioniq Electric is the industry’s most efficient EV (136 mpge).
. . .​

Bob Wilson

 

as I said, Hyundai USA could have problems arranging a party to get drunk in a brewery (if you know what I mean) , they wouldn't be able to decide the date and time after talking about it for over a year

shame as the Ioniq is potentially a good car but the Hyundai USA seems to be dragging out the launch and slow getting cars in showrooms

 

how can a car legally pulse and glide on it's own? does it use the rear camera to make sure it's not impeding traffic? does it only pulse to the speed limit and glide below?

 

We are the highest fuel economy of any hybrid, of any gasoline car without a plug sold in the US. We are the highest in EV efficiency of any car sold in America. That means less carbon and lower cost of ownership. And we are the best in operating costs.

That's when a dog gets ran over, IMHO

EPA 58MPG, still insisting, wait until US Ioniq HV customers sue Hyundai...

For someone stubborn, double the prejudice.

 

it don't actually pulse and glide, it swaps between ICE / EV and back on its own based on SOC of the battery which sort of simulates pulse and glide but keeps a constant speed

if you look ahead and note the terrain you can help by altering your driving to keep it in ICE mode on the flat / incline so as to get longer glide on a slope / flat to make better use of the charge in the battery, that is how I got 77MPG (UK) / 62MPG (US) the other day on a 195 mile run home in rush hour traffic on highway / motorway

 

have you got a link to that quote?

 

Yep, Bob had this link some posts above
Green Car Congress: Hyundai begins rollout of Ioniq Hybrid, PHEV and EV; most efficient non-plug vehicle, most efficient EV in US; powertrain discussion

 

here's another thing. is the enough fuely or other data from the 2 eco yet?

 

This site has mixed (15", 17") Prii
Verbrauch: Toyota - Prius - Spritmonitor.de
Still, 52.8MPG

 

Here is a another, single tank, driving stunt from July 2013:

Source: Efficient driving for a 1,000 mile tank | PriusChat

What is missing from many of the other 'stunts' is the speed. We can calculate and measure the mph vs MPG and get curves like:

These are easily generated by using the EPA roll-down coefficients to calculate the drag power and using the vehicle thermodynamic efficiency to calculate the fuel burn. Notice that holding the speed to the 20-30 mph range, all three of these cars gets over 100 MPG. So if you have a pair of drivers who swap every 1-2 hours, you can in 100 hours, a little over 4 days, cover 3,000 miles getting over 100 MPG.

My stunt, a single 10.9 gallon tank, was done solo over a three week interval. But I've never considered this to be anything but a stunt. There is in Japan a single-tank driving club and the top rated driver is (last time I checked) a nice lady who did about 1,300 miles.

Bob Wilson

 

To expand on that... the reason that a driver would pulse and glide is to optimize an ICE's efficiency - ICEs are generally most efficient in a relatively narrow RPM versus load range, and the power generated in that most efficient range is generally more than the vehicle requires to cruise.

So, in a non-hybrid, pulse and glide involves accelerating the vehicle while remaining within that most efficient range, storing the energy generated by the engine as kinetic energy, and then shutting down the engine and coasting with it disengaged, using the excess kinetic energy without using fuel.

In a hybrid that's capable of shutting down the engine in motion (the Prius is an example), the computers can pulse and glide for you, while the vehicle stays the same speed, because the excess energy is stored in the battery, instead of as kinetic energy. It's not the driving technique known as "pulse and glide", but it has the exact same effect - the engine is kept within an efficient range of operation when it needs to run, and then is shut down once the battery's full, and the battery supplies the energy to keep the vehicle going at the desired speed. When the battery is exhausted, the engine is restarted, and run in the efficient range of operation. This only works at lower speeds in the Prius, mind you, but it will do it if you're going sufficiently slowly.

 

The threshold was 42-46 mph in the traditional Prius. I'm happy to report the Prius Prime does not appear to have that limit.

Bob Wilson

 

is there any data comparing manual p & g to computerized?

 

that's a bold statement to make to a magazine / website, any manufacturer making those sort of claims I love to see the data they have to back them up