Anatomy : Summary
Rotary Engine Illustrated - The Wankel Motor
 
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16.01.2008
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Anatomy : Summary PDF Print E-mail
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Written by Wesley Mahler   
26.11.2005

Rotary Engine Anatomy Summary

The first thing you notice about rotary engines are their incredibly compact dimensions. A basic 13B (1.3 liter) engine is approximately the size of a beer keg and can be lifted by one fit person. At the same time, it has a volumetric capacity twice that of a conventional piston engine of identical rated displacement.

How is this possible13B Together?
The secret is in the rotary engineering package. Each rotor section (rotor and housing) form three working chambers, which work simultaneously to move its entire rated displacement on each turn of the eccentric shaft. How it does this will be the subject of later in the 'How Do Rotary Engine Work Section'; for now though, let's look at the components and nomenclature. 

Working ChambersCOMPONENTS AND NOMENCLATURE
Rotary engines are basically a sandwich of iron and aluminum rotor housings that contain rotors and an eccentric shaft. Typical rotary engines have two rotor sections, with rotor housings providing lateral containment of the rotors within.
Additionally, there are three side housings (front, intermediate, and rear) to provide fore and aft containment. Rotor housings are typically aluminum, while side housings and rotors are cast iron with machined surfaces.

The eccentric shaft connects the two rotors, 180 degrees out of phase, slightly offset from the center of rotation, and transmits power to the flywheel, similar to the crank in a piston engine. Intake ports are typically run through the side housings, in what is called a side port intake configuration, while the exhaust ports are traditionally run directly through the rotor housings, which is referred to as a peripheral port exhaust configuration. With respect to ports, one important difference between rotaries and their piston counterparts is the lack of any complicated valvetrain to control the intake and exhausts ports. Instead, the ports are opened and closed by the movement of the working chambers.

13B Apart
Click on any of the engine parts below for more information about them.
Rotor Housing
Rotor
Plate Stationary Gear
Eccentric Shaft
Comments
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more information and data
saurabhchoudhary7 (Registered) 2006-09-21 07:11:40

i really find the article informative . but i need to know more about its bulding .
rebuilding
travis (IP:205.188.116.10) 2006-10-11 19:53:49

i have a chance to buy a 93 rx7 twin turbo, but the car has alot of miles on it. is a rebuild an option for a rotary engine if so can you get upgraded internals for the engine. please reply to lcbusa1300@yahoo.com

thanks
Awesome info
Brian (IP:131.216.48.240) 2006-10-13 13:35:34

I've been wondering about how this engine works and your pics and articles are very helpful. Thanks!
question
sofia (IP:193.137.16.173) 2006-11-15 07:16:32

I i'm doing a work about the wankel engine but i can't find anything about the material of the wankel, i don't know if it's iron,aluminium..i would like to find more information about the manufacterer, if the rotor and the housing are made by casting,etc...if someone can help me please do!!
neogllzf
neogllzf (IP:75.168.121.159) 2007-11-01 10:25:23

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Last Updated ( 15.10.2006 )
 
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