PatOP Opposed Piston Engine

Single cylinder, single crankshaft, full balanced (vibration free), with built-in scavenging pump, four stroke like lubrication and some 35% additional time for the injection and the combustion of the fuel.

For more: www.pattakon.com

Category:

Autos & Vehicles

Tags:

• Opposed
• Piston
• Engine
• OPE
• OPRE
• pattakon
• Fairbanks
• Morse
• Doxford
• Junkers
• OPOC
• EcoMotors
• Diesel
• Direct
• Injection

[pattakoncom]

"how do you assemble the conrods to the crankshaft?"

The conrod big-end hole diameter is 52mm, the crankpin diameter is 48mm, the plain bearing is 2mm thick (from BMW1600). The conrod passes to its crankpin, then it is "locked" by the plain bearing.

"What do the 2 little pistons on the side do?"

They are the "cross-head" mechanism of the exhaust piston: they take the thrust loads. The PatOP uses one crankshaft for both pistons, while OPRE needs two.

Photos at the pattakon web site

[pattakoncom]

You are wrong.

There is some 35 to 40% additional time near the combustion dead center, as compared to the conventional of same con-rod to stroke ratio.

Think, for instance, the time the piston remains at the last 10% of the piston travel, as it approaches the TDC.

At 6000 rpm the time in the PatOP is the same with the time of the conventional running at 4500 rpm.

Visit the pattakon web site and see the plots. Also the "Fuel View Point" gif animation. You will understand.

Thank

[pattakoncom]

DanFrederiksen : isn't it just a two stroke engine with needless complexity? how is it better than a normal one? vibration maybe

Please visit the pattakon dot com web site and read about the OPRE and then about the PatOP opposed piston engines.

[SquadraCorseGr]

k fadazome oti den xriazete kan to kolourokoniko sxima pleon sto emvolo pou apla olisthenei mesa tou to omoaksoniko komvio etsi?

[pattakoncom]

Etsi.

Sto Youtube exei ki allo ena video pou to idio prototypo dοulevi me petreleo. Psaxe sto PatOP.

Ετσι.

Στο Youtube έχει κι άλλο ένα video που το ίδιο πρωτότυπο δουλεύει με πετρέλαιο. Ψάξε στο PatOP.

[FrankiePintado]

That's pretty cool.  It seems like at tdc, the pistons are almost touching. Is that going to work?

[pattakoncom]

@FrankiePintado

It works.

Open the other PatOP engine video wherein the same prototype runs on Diesel fuel.

[NocturneSonate]

Electric is the future.

[NearAbbeyRoad]

A nice simple design eliminating valvegear. Could be a good engine used as a range extender powering a genny for hybrids. It is small, neat and smooth with no valvegear.

[ismokewead420]

it would make one hell of a mess if it blew up lol

nice design, do u have a running prototype?

[megamonkeyathotmail]

because normal diesel engines don't have enough torque :P

[WickedTRX]

Been Following your projects with much interest since the variable lift valves times.

The big piston on the bottom, are you using it as a scanvange for the 2 stroke diesel cycle? would be great if you force fed that pump with a turbo!

[phoolosopher]

What do the 2 little pistons on the side do?

[phoolosopher]

how do you assemble the conrods to the crankshaft?