Project of the Month built by apointofview
Home Model Engine Machinist > Building Them > Plans > PatWankel Rotary Engine

Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 01-08-2017, 04:18 PM   #1
Join Date: Jul 2016
Posts: 48
Liked 37 Times on 28 Posts

Default PatWankel Rotary Engine

I just received this email from your forum:


We have been missing you on Home Model Engine Machinist for some time now.

If you get a chance, please log in and let us know what you've been doing lately."

In response, here is the PatWankel Rotary Engine, the most recent project we are dealing with:

The working surface whereon the seals abut is not a “cylindrical” surface but a 3D curved surface ending smoothly / tangentially on the side flat surfaces of the casing.

The typical “Wankel sealing grid” (wherein: each combustion chamber is sealed by a set of two side seals, two apex seals and four button (or corner) seals) can be replaced by a single piece seal per combustion chamber.

Here is a PatWankel wherein the working surface is on the inner body (say as in the Liquid Piston engine):

One seal per combustion chamber, as in the reciprocating piston engines.

This five “cylinder” PatWankel rotary ( stereoscopic view, as at ) :

has two combustions per rotation of the inner body, i.e. as much as a two-rotor Wankel Rotary (say, Mazda RX-.

Does the oval seal at bottom middle remind the Honda NR750?

Imagine this PatWankel engine at the back of an airplane pushing forwards:

The outer body (that with the cooling fins) spins at 4/5 (80%) of the speed of the inner body:

There is no eccentric shaft.
There are no balancing webs.
However it is perfectly balanced.

For more:



Manolis Pattakos

manolis is offline  
People Like This 
Reply With Quote

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Rotary Engine Design vederstein Plans 4 12-06-2012 10:28 PM
Radial Bi Rotary Engine frankydevaere A Work In Progress 31 01-28-2012 07:09 PM
Rotary engine Kaleb Plans 3 09-27-2011 10:50 AM
Machining a Rotary Engine Bernd Links 3 11-07-2008 11:52 AM
Rotary Valve Engine 1Kenny Photos and Videos 0 12-25-2007 06:19 PM

Newest Threads

- Top - Member List