opposed piston, opposed cylinder? - Toyota Yaris Forums

silver_echo · 10-31-2011, 12:54 AM

hey CTScott, take a look at this.

anybody else heard about this? looks like it will make a great engine design.

http://www.ecomotors.com/

Stove · 10-31-2011, 01:50 AM

I'm sure it's a a lot more efficient with modern fuel injection and computers to control timing but its not a new design. The opposed piston engine has been around since the early 1900's

silver_echo · 10-31-2011, 02:15 AM

yes, the opposed piston has been around, and the opposed cylinder is in my current car(subaru), but have there been cars with both?

ilikerice · 10-31-2011, 04:55 AM

if you look a the design this is not your standard boxer engine. its 2 pistons pushing on each other. There is no "head", kinda weird setup. Looks PAINFUL to work on. I'm curious to see this in action

SilverBack · 10-31-2011, 02:17 PM

Am I the only one that sees an intake but no header? Or is just that the header is off to the side so it disappears in the cut-away?

why? · 10-31-2011, 03:12 PM

I almost feel bad for people like this. Their have been so many of these types of engines that have simply vanished, either because they were horrific or someone bought the patents to kill it.

yaris2010RS · 10-31-2011, 07:57 PM

i like it

Stove · 10-31-2011, 09:37 PM

Quote:

Originally Posted by silver_echo

yes, the opposed piston has been around, and the opposed cylinder is in my current car(subaru), but have there been cars with both?

There was aircraft with opposed piston used in WWII, that's where I knew of it from. I don't know of any cars that have utilized it.
The opposed cylinder (boxer) has been in common use in automotive and aircraft since at least the 1930's.

thepartsmancometh · 10-31-2011, 09:40 PM

prepare for your mind to be blown.

If you want crazy, look up the napier deltic. They used them in diesel locomotives in the UK.

animation

Stove · 10-31-2011, 09:54 PM

Quote:

Originally Posted by thepartsmancometh

prepare for your mind to be blown.

If you want crazy, look up the napier deltic. They used them in diesel locomotives in the UK.

animation

Whenever I see stuff like that, all I can think of is how much work it must be to troubleshoot issues.

I think the craziest one I know is the Gnome Radial Aircraft Engine. The crank was the mounting point to the air frame and the engine case spun with the prop mounted to it

Gnome Engine
engine starts at about 1:30 in to it

mr_miles · 10-31-2011, 10:56 PM

usually all you have to do to stump someone these days is say RX7. lol. Magical spinning triangles, etc.

TLyttle · 10-31-2011, 11:27 PM

Good ol' rotaries... when you look at it, they were quite efficient. The Wankel, on the other hand, was a real bag of snakes, but one must admire Mazda for pursuing the design.

Many German aircraft ran a Junkers Jumo double-opposed diesel for power... Let's complicate things here: two cranks, 12 pistons, no cylinder head. They were used in flying boats, and one really doesn't want an unreliable engine in that application!

10-31-2011, 12:54 AM	#1
silver_echo ekodrvr View User's Garage Drives: 2002 white subaru impreza wrx Join Date: Feb 2009 Location: Spokane, WA Posts: 776	opposed piston, opposed cylinder? hey CTScott, take a look at this. anybody else heard about this? looks like it will make a great engine design. http://www.ecomotors.com/ __________________ if you want to see my plans for this car, check out here... http://www.cardomain.com/ride/3154316 i like this smiley...

10-31-2011, 02:15 AM	#3
silver_echo ekodrvr View User's Garage Drives: 2002 white subaru impreza wrx Join Date: Feb 2009 Location: Spokane, WA Posts: 776	yes, the opposed piston has been around, and the opposed cylinder is in my current car(subaru), but have there been cars with both? __________________ if you want to see my plans for this car, check out here... http://www.cardomain.com/ride/3154316 i like this smiley...

10-31-2011, 04:55 AM	#4
ilikerice Drives: 2010 black yaris Join Date: Oct 2010 Location: savannah, ga Posts: 2,868	if you look a the design this is not your standard boxer engine. its 2 pistons pushing on each other. There is no "head", kinda weird setup. Looks PAINFUL to work on. I'm curious to see this in action __________________ -Derrick- "Racing is important to men who do it well. When you're racing... It's life. Anything that happens before or after, is just waiting."

10-31-2011, 02:17 PM	#5
SilverBack Joey View User's Garage Drives: '14 Scion xD 5-speed Join Date: Oct 2008 Location: El Monte, Ca Posts: 3,529	Am I the only one that sees an intake but no header? Or is just that the header is off to the side so it disappears in the cut-away? __________________ Formerly owned Met-Met. '07 Yaris LB 5-speed. A forum post should be like a skirt: Long enough to cover the subject but short enough to keep things interesting. "I don't have an anger problem. I have an idiot problem." -Hank Hill

10-31-2011, 03:12 PM	#6
why? Only Happy When it Rains View User's Garage Drives: Yaris LB Join Date: Jan 2006 Location: harnett county NC Posts: 4,097	I almost feel bad for people like this. Their have been so many of these types of engines that have simply vanished, either because they were horrific or someone bought the patents to kill it. __________________ Colin Chapman disciple

10-31-2011, 01:50 AM	#2
Stove View User's Garage Drives: 2010 Yaris 5 Door Join Date: Mar 2010 Location: Tigard Oregon Posts: 314	I'm sure it's a a lot more efficient with modern fuel injection and computers to control timing but its not a new design. The opposed piston engine has been around since the early 1900's

10-31-2011, 07:57 PM	#7
yaris2010RS View User's Garage Drives: no-longer-boosted '10 Yaris Join Date: Nov 2009 Location: Angus, Ontario Posts: 1,891	i like it __________________ If it has boobs or wheels sooner or later your gonna have problems with it

10-31-2011, 09:40 PM	#9
thepartsmancometh Drives: '08 LB, '07 WRX Join Date: Jan 2009 Location: midwest Posts: 187	prepare for your mind to be blown. If you want crazy, look up the napier deltic. They used them in diesel locomotives in the UK. animation

10-31-2011, 10:56 PM	#11
mr_miles Drives: 2013 Yaris Join Date: Oct 2011 Location: Portland, OR Posts: 914	usually all you have to do to stump someone these days is say RX7. lol. Magical spinning triangles, etc.

10-31-2011, 11:27 PM	#12
TLyttle Drives: 07 Yaris sedan Join Date: Jun 2007 Location: Keremeos BC Posts: 986	Good ol' rotaries... when you look at it, they were quite efficient. The Wankel, on the other hand, was a real bag of snakes, but one must admire Mazda for pursuing the design. Many German aircraft ran a Junkers Jumo double-opposed diesel for power... Let's complicate things here: two cranks, 12 pistons, no cylinder head. They were used in flying boats, and one really doesn't want an unreliable engine in that application!

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