GameboyRMH MegaDork
Oct. 14, 2014 7:46 a.m.

http://www.thetruthaboutcars.com/2014/10/volvo-goes-death-metal-triple-turbo-two-liter-four/

New HP-per-liter record contender, and first successful application of a fully electric turbo. It spools up the two bigger turbos.

Oct. 14, 2014 8:55 a.m.

I saw this and was thinking how fantastic it will be when adapted down to a 1.0-1.4L application. I could deal with a 1L making 200-225hp.

erohslc Dork
Oct. 14, 2014 11:27 a.m.

And the power to drive the electric turbo comes from where exactly? ...
TANSTAAFL

QDogg New Reader
Oct. 14, 2014 11:57 a.m.
erohslc wrote: And the power to drive the electric turbo comes from where exactly? ... TANSTAAFL

The transfer of electrons?

GameboyRMH MegaDork
Oct. 14, 2014 11:58 a.m.
QDogg wrote:
erohslc wrote: And the power to drive the electric turbo comes from where exactly? ... TANSTAAFL

The transfer of electrons?

Which comes from the crank at some point. Turning crank power into boost, basically pissing energy away right?

T.J. PowerDork
Oct. 14, 2014 12:06 p.m.

The electric 'turbo' isn't really a turbo at all. There is no turbine. It is a compressor or an air pump. The thing that is not clear to me, is how is it used to spool up the two exhaust driven turbos? Is it pumping air into the turbine side? Seems like that would/could lead to thermal shock issues when the hot exhaust gasses show up right after. I guess the air will be heated through compression, but I wouldn't think it will be a match for the exhaust gas temps.

Is the electric turbo pushing air into the intake through the turbos until the turbos can develop boost? That would make more sense to me, but it's not what the article writer thinks he understands. Maybe this is an english as a second language issue. It seems that Cameron Auberon either is a poor writer, doesn't understand how engines work, or a combination of both.

It would be neat to see it go into production though however it works.

bluej SuperDork
Oct. 14, 2014 12:13 p.m.

Either that picture is of a different engine, or the AW/TTAC articles are wrong. They say they don't use exhaust gas, but there's pretty clearly two-two port exhaust manifolds plumbed to only two separate turbos. The compressor housing on the turbos in the pic is interesting, though. I wouldn't be surprised if it's the wrong pic for the article and the picture is of a pair of variable vane/exhaust nozzle/whatever turbos instead.

GameboyRMH MegaDork
Oct. 14, 2014 12:20 p.m.
T.J. wrote: Is the electric turbo pushing air into the intake through the turbos until the turbos can develop boost? That would make more sense to me, but it's not what the article writer thinks he understands. Maybe this is an english as a second language issue. It seems that Cameron Auberon either is a poor writer, doesn't understand how engines work, or a combination of both.

Yep, this is how it works:

http://www.speedhunters.com/2014/10/triple-boost-volvos-450hp-2-0l-four/

Bizarrely, this article says that the electric compressor output drives the two other turbos

http://www.autonews.com/article/20141013/OEM06/310139959/volvo-triple-boost-engine-cranks-up-the-power

Pretty sure it's yet another of those epic goofs that comes out when journalists and turbochargers meet

Cone_Junkie SuperDork
Oct. 14, 2014 1:43 p.m.

A couple of my coworkers went to an Advanced Volvo Tech training seminar last weekend. The instructor is one of the engineers working on this project. Supposedly this would be a motor that would go in to all future Volvos. Base models would get a 250-300HP version and eventually climb up to the 450HP version.

I would also consider an "electric turbo" to be a electric supercharger too.

You'll need to log in to post.

Also on Grassroots Motorsports

Little Car Show: Celebrating All Things Quirky and Small

3 hours ago in Articles

As the name suggests, the Little Car Show is all about little cars.

Concours d’Lemons to Ruin Monterey Car Week Yet Again

4 hours ago in News

What started as the anti-concours has transformed into a major event on the Monterey Car Week schedule.

You Need This: A Quite Eye-Catching Green Over Red Ferrari

5 hours ago in News

Not your usual Ferrari color combo.

We're Back In Monterey for Car Week

5 hours ago in News

And so it begins, another trip to Monterey Car Week.

Your Projects: JDM Autozam AZ-1 Kei Car

6 hours ago in News

What are the realities of importing a JDM kei car to the U.S.?

Tonight on Grassroots Motorsports LIVE! Lee Grimes of Koni Shocks

1 day ago in News

This may shock you, but suspension is arguably the most important part of going fast.

Classic Motorsports Monterey Welcome Party Welcomes 2000-Plus Gearheads

1 day ago in Articles

Last night we threw a party, and more than 2000 people came to celebrate.

You Need This: E46-Chassis BMW M3 for $6000!?

2 days ago in News

Could this M3 donate its heart to your next project?

Deal of the Month: Free Trackside Companion!

2 days ago in News

Ever wished you had a handy guide on how to dial in your alignment or adjust your dampers?

This Tuesday: Join Us at Track Night in America

3 days ago in News

This Tuesday we'll be running at Palm Beach International Raceway

Experience Monterey With Us

3 days ago in News

We're on our way out to Monterey, California, for car week.

Tomorrow, August 15: Join our Monterey Kickoff Cruise-In

3 days ago in News

Our Monterey welcome party is taking over all of downtown Pacific Grove.

OUR SPONSORS

Grassroots Motorsports Magazine

Subscribe Today

Also get your instant access to the digital edition of Grassroots Motorsports Magazine!

Learn More
WWCnIkhvRyrZdu5QTgDg0UKy90ePxqHz