Calling all mechanical engineers

[Scotrod]

The engines relationship to the frame has virtually ~nothing~ to do with smoothness. The opposed cylinder design is what does it.

There is also an opposed cylinder opposed piston design out there than looks interesting;

http://www.ecomotors.com/

Turbo 2 stroke. Power to weight/power to size ratio (power density) and efficiency are both very impressive.

The technology of Opposed pistons isn't 'new',,, the diesel engines in some of Germanys WW2-era balloons had a similar design in the Junkers Jumo 205 aircraft engine:

http://upload.wikimedia.org/wikipedi...cutview_02.jpg

The OPOC looks like it's getting support from / going to be built in China:

http://www.motorauthority.com/news/1...built-in-china

http://www.greencarreports.com/news/...piston-engines

The piston-equipped engine, as we know it, is long overdue for a refresh,,,

[4DI2D]

BMW's boxer seems to have started something.
Volkswagen's opposed four and the original Wing design differed mostly in cooling.
In the Forties the first helicopter engines were air-cooled opposed sixes specifically to reduce vibration in the airframe.

Honda didn't do anything new . . . they just did it BETTER!

[Retired Army]

Thank all of you for the great information.

[smokinjoe187]

Thank all of you for the great information.

now lets work on world peace!

[Scotrod]

It takes a little while for the gif file to load, but here's how the OPOC engine works:

http://www.ecomotors.com/sites/defau...block-loop.gif

Great balance, piston speed cut in half compared to a 'conventional' piston engine of equal size (less wear, less drag, capable of higher rpms)

[Scotrod]

The OPOC Advantage
The OPOC engine could represent the next generation in diesel technology, and its advancement may prove as potent to diesel performance as turbocharging, intercooling, and direct injection werecombined. EcoMotors promises its engine:
1. Uses 50 percent less parts and is projected to be much cheaper to make than today’s engines
2. Has no cylinder head or valvetrain to cause problems
3. Is capable of 15 to 50 percent better fuel economy
4. Does not create excess waste heat, so the need for a large cooling system is reduced
5. Creates fewer exhaust emissions, which negates the need for expensive exhaust aftertreatments


Navistar Ecomotors Diesel Engine Side Shot

Inside Navistar’s Diesel Of The Future
Manufacturer: EcoMotors
Location: Allen Park, Michigan
Engine: EM100
Type: Two-stroke, opposed-piston opposed-cylinder (OPOC) turbodiesel
Cylinder bore: 3.937 inches (100 mm)
Dry weight: 296 pounds
Dimensions: 22.8L x 41.3W x 18.5H in.
Horsepower: 325 hp at 3,500 rpm
Torque: 664 lb-ft at 2,100 rpm
Power density: 1.1 hp per pound


Read more: http://www.dieselpowermag.com/tech/1...#ixzz31wIa4fHJ

664 ft lbs from a 2 cylinder w/4 inch bore's??!!??? YEAH BABY!!!!!

[MarcPW]

Do you know that originally the plan for the first GW (GW1000cc) was based on a flat six as we have today, but the ingeneers deemed it as too soon for this kind of technology, that it will scare motorcyclists away from Honda, so decided on a 4 cylinders... Honda created this 1000 cc just to beat Kawazaki who just made a 900cc motorcycle. (I forgot the model)