My Other Rotary Nomination

Nexcis · 05-13-2008, 01:03 PM

No seriouslly, it's a rotary!!! I wasn't sure where to post this (section) so I figured this is as good as any... not to mention funny. (Mods feel free to move.)

But seriously, did you guys know that the Toyota Prius is a rotary car?
No, well read on!

Rotary Atkinson-cycle engine

Rotary Atkinson-cycle engine

The Atkinson cycle can be used in a rotary engine. In this configuration an increase in both power and efficiency can be achieved when compared to the Otto cycle. This type of engine retains the one power phase per revolution, together with the different compression and expansion volumes of the original Atkinson cycle. Exhaust gases are expelled from the engine by compressed-air scavenging. This modification of the Atkinson cycle allows for the use of alternative fuels like Diesel and hydrogen. See External Links for more information
Vehicles using Atkinson-cycle engines

While a modified four-stroke engine using the Atkinson cycle provides good fuel economy, it is at the expense of a lower power-per-displacement than a traditional four-stroke. If the engine is only run at high powers intermittently, then the power of the engine can be supplemented by an electric motor during times when high power is needed. This forms the basis of an Atkinson-cycle-based hybrid electric drivetrain. These electric motors can be used independently of, or in combination with, the Atkinson-cycle engine, to provide the most efficient means of producing the desired power.
Multiple production vehicles use Atkinson-cycle engines:

Toyota Prius hybrid electric (front-wheel drive) with a (purely geometric) compression ratio of 13.0:1
Ford Escape/Mercury Mariner/Mazda Tribute hybrid electric (front- and four-wheel drive) with a compression ratio of 12.4:1
Toyota Camry Hybrid hybrid electric (front-wheel drive) with a compression ratio of 12.5:1
Chevrolet Tahoe Hybrid hybrid electric (four-wheel drive) with a compression ratio of 10.8:1

Note that any compression ratio shown above only reflects the physical compression ratio, which provides the ratio of the combustion chamber volumes when the piston is at "bottom dead center" versus "top dead center". The effective compression ratio of the air-fuel mixture in an Atkinson-cycle engine, with respect to atmospheric pressure, is lower due to the aforementioned delay in closing the intake valve.

Find out more at: http://en.wikipedia.org/wiki/Atkinson_cycle

My5ABaby · 05-13-2008, 02:23 PM

Damn hippies and their good gas mileage. We don't take kindly to your kind around here...

Phoenix7 · 05-13-2008, 02:53 PM

wow, I didn't know that. Weird design.

Nexcis · 05-13-2008, 03:02 PM

LOL, For the record before I start getting the rep as a hippy (not that there's anything wrong with you hippies out there)... this is NOT my car.

jonbro6956 · 05-13-2008, 03:43 PM

The Prius does not have a rotary engine in it. It does use the Atkinson cycle as opposed to the Otto cycle though, but still a piston engine. It is a 1.5L DOHC 16 valve VVT-i engine.

My5ABaby · 05-13-2008, 07:18 PM

0rpm it has like 250+ ft/lb's of torque available. My 7 has like... 12 ft/lb's....

djjjr42 · 05-13-2008, 07:48 PM

Quote:

Originally Posted by Nexcis

LOL, For the record before I start getting the rep as a hippy (not that there's anything wrong with you hippies out there)... this is NOT my car.

If gas gets to $4 it might be!

Phoenix7 · 05-14-2008, 02:36 AM

meh, don't complain. There are plenty of europeans with 7's getting raped by gas prices but they still rock the 7 on the weekends. Pay to play.

Nexcis · 05-14-2008, 07:29 AM

Quote:

Originally Posted by djjjr42

If gas gets to $4 it might be!

Not while the Zeta continues to get 27mpg; she'll become my daily at that point.

DRTHVDR · 05-14-2008, 08:38 AM

Still...the "PIUS" is still too much of a dick-bag car to be voted for ANYTHING other than one of the worst cars EVER to drive. Welcome to a generation of people who enjoy being dis-connected from their automobiles. That's the complete opposite theme from the spirit that created the RX-7. This car is the nemesis the the Mazda RX-7.

djjjr42 · 05-14-2008, 08:51 AM

Quote:

Originally Posted by Nexcis

Not while the Zeta continues to get 27mpg; she'll become my daily at that point.

Holy crap, 27 is pretty good, and very surprising. If I got that on my FB I'd be tickled pink. You must not be getting into it much, like I would be.

What do you get on the Jeep?

Nexcis · 05-14-2008, 10:58 AM

On the Jeep I get 17mpg.

So... What have we gotten out of this thread? That the Toyota "Pius" is the nemesis to the RX-7!

WE3RX7 · 05-14-2008, 11:29 AM

Apparently there are lots of Jeep owners around here

I get 16MPG w/ my '05 and 6spd trans commuting, but the highways usually show about 19-20mpg..

Its sad that the best MPG vehicle I own is my '04 RX8. Rocked out 24.6MPG coming home from DGRR.

BLK FC3S · 05-14-2008, 08:40 PM

You guys say the "pius" is the nemesis to the RX7 but I commute 100 miles a day to get to and from work. I am not caring what my car "feels" like at 5am driving to work. But I would care that I am saving $50 a week in gas (24mpg vs 60mpg).
The RX7 is for weekends though when I actually ENJOY driving and with the money I save throughout the week, I can afford the $4.20/gal for 93 octane for the 7. I would never get rid of an rx7 because of gas prices, just drive it less.

djmtsu · 05-14-2008, 08:44 PM

The wifey gets about 16mpg in the 99 Grand Cherokee. I get about 35mpg in the Mazda3, but I can get close to 30mpg in the 7 as well. If premium was not so expensive I would daily it again and let the wife drive the 3.

Oh well.

05-13-2008, 01:03 PM	#1
Nexcis Rotary Fanatic Join Date: Mar 2008 Location: Spartanburg, SC iTrader: (3) Posts: 216 Rep Power: 17	"Other" Rotary Nomination No seriouslly, it's a rotary!!! I wasn't sure where to post this (section) so I figured this is as good as any... not to mention funny. (Mods feel free to move.) But seriously, did you guys know that the Toyota Prius is a rotary car? No, well read on! Rotary Atkinson-cycle engine Rotary Atkinson-cycle engine The Atkinson cycle can be used in a rotary engine. In this configuration an increase in both power and efficiency can be achieved when compared to the Otto cycle. This type of engine retains the one power phase per revolution, together with the different compression and expansion volumes of the original Atkinson cycle. Exhaust gases are expelled from the engine by compressed-air scavenging. This modification of the Atkinson cycle allows for the use of alternative fuels like Diesel and hydrogen. See External Links for more information Vehicles using Atkinson-cycle engines While a modified four-stroke engine using the Atkinson cycle provides good fuel economy, it is at the expense of a lower power-per-displacement than a traditional four-stroke. If the engine is only run at high powers intermittently, then the power of the engine can be supplemented by an electric motor during times when high power is needed. This forms the basis of an Atkinson-cycle-based hybrid electric drivetrain. These electric motors can be used independently of, or in combination with, the Atkinson-cycle engine, to provide the most efficient means of producing the desired power. Multiple production vehicles use Atkinson-cycle engines: Toyota Prius hybrid electric (front-wheel drive) with a (purely geometric) compression ratio of 13.0:1 Ford Escape/Mercury Mariner/Mazda Tribute hybrid electric (front- and four-wheel drive) with a compression ratio of 12.4:1 Toyota Camry Hybrid hybrid electric (front-wheel drive) with a compression ratio of 12.5:1 Chevrolet Tahoe Hybrid hybrid electric (four-wheel drive) with a compression ratio of 10.8:1 Note that any compression ratio shown above only reflects the physical compression ratio, which provides the ratio of the combustion chamber volumes when the piston is at "bottom dead center" versus "top dead center". The effective compression ratio of the air-fuel mixture in an Atkinson-cycle engine, with respect to atmospheric pressure, is lower due to the aforementioned delay in closing the intake valve. Find out more at: http://en.wikipedia.org/wiki/Atkinson_cycle __________________ '94 VR FD - Mod List Last edited by Nexcis; 05-13-2008 at 03:02 PM.. Reason: Source Link Added: http://en.wikipedia.org/wiki/Atkinson_cycle

05-13-2008, 02:23 PM	#2
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	Damn hippies and their good gas mileage. We don't take kindly to your kind around here... __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

05-13-2008, 03:02 PM	#4
Nexcis Rotary Fanatic Join Date: Mar 2008 Location: Spartanburg, SC iTrader: (3) Posts: 216 Rep Power: 17	LOL, For the record before I start getting the rep as a hippy (not that there's anything wrong with you hippies out there)... this is NOT my car. __________________ '94 VR FD - Mod List

05-13-2008, 03:43 PM	#5
jonbro6956 Zoom Zoom Join Date: Feb 2008 Location: Culpeper, VA iTrader: (0) Posts: 10 Rep Power: 0	The Prius does not have a rotary engine in it. It does use the Atkinson cycle as opposed to the Otto cycle though, but still a piston engine. It is a 1.5L DOHC 16 valve VVT-i engine. __________________ 2008 Jeep Patriot 2005 Velocity Red GT RX8

05-13-2008, 07:18 PM	#6
My5ABaby Sigh..... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (6) Posts: 2,377 Rep Power: 19	0rpm it has like 250+ ft/lb's of torque available. My 7 has like... 12 ft/lb's.... __________________ 1986 Sport: 132k miles, 5A (Sapphire Blue Metallic), Tokico Blues, Racing Beat Springs, Custom LED tailights (only S4 LED tails in the world), SSR Mark II, Racing Beat exhaust, S5 black interior, Rotary Resurrection rebuild at 120k miles Community Service Manual RotorWiki "Imagination costs nothing; we could build square locomotives or fly to Mars" - Felix Wankel Yesterday is history, tomorrow is a mystery, but today is a gift. That is why it is called the "present."

05-14-2008, 08:38 AM	#10
DRTHVDR Rotary Fanatic Join Date: Feb 2008 iTrader: (3) Posts: 126 Rep Power: 17	Still...the "PIUS" is still too much of a dick-bag car to be voted for ANYTHING other than one of the worst cars EVER to drive. Welcome to a generation of people who enjoy being dis-connected from their automobiles. That's the complete opposite theme from the spirit that created the RX-7. This car is the nemesis the the Mazda RX-7. __________________ You don't need a better ride, your ride needs a better driver. 93 RX-7 R1 CYM: Swap in progress Other: 00 Impreza RS (GC8) & Odyssey Touring (Mommy Missile)

05-14-2008, 10:58 AM	#12
Nexcis Rotary Fanatic Join Date: Mar 2008 Location: Spartanburg, SC iTrader: (3) Posts: 216 Rep Power: 17	On the Jeep I get 17mpg. So... What have we gotten out of this thread? That the Toyota "Pius" is the nemesis to the RX-7! __________________ '94 VR FD - Mod List

05-14-2008, 11:29 AM	#13
WE3RX7 RCC Addict Join Date: Feb 2008 Location: VA iTrader: (1) Posts: 1,812 Rep Power: 18	Apparently there are lots of Jeep owners around here I get 16MPG w/ my '05 and 6spd trans commuting, but the highways usually show about 19-20mpg.. Its sad that the best MPG vehicle I own is my '04 RX8. Rocked out 24.6MPG coming home from DGRR.

05-14-2008, 08:40 PM	#14
BLK FC3S C088 Join Date: Mar 2008 Location: Mount Dora, FL (no its not a mountian) iTrader: (0) Posts: 112 Rep Power: 17	You guys say the "pius" is the nemesis to the RX7 but I commute 100 miles a day to get to and from work. I am not caring what my car "feels" like at 5am driving to work. But I would care that I am saving $50 a week in gas (24mpg vs 60mpg). The RX7 is for weekends though when I actually ENJOY driving and with the money I save throughout the week, I can afford the $4.20/gal for 93 octane for the 7. I would never get rid of an rx7 because of gas prices, just drive it less. __________________

05-14-2008, 08:44 PM	#15
djmtsu My minds tellin' me no... Join Date: Feb 2008 Location: Murfreesboro, TN iTrader: (10) Posts: 4,043 Rep Power: 21	The wifey gets about 16mpg in the 99 Grand Cherokee. I get about 35mpg in the Mazda3, but I can get close to 30mpg in the 7 as well. If premium was not so expensive I would daily it again and let the wife drive the 3. Oh well. __________________ 1976 Mazda Cosmo RX-5 1976 Mazda Cosmo RX-5 2003 Toyota Tundra TRD 2015 Toyota 4Runner SR5