1. General Description of Operation

The True Rotary Engine (TRE) is a completely new engine
using a simplified design concept. This new design will be a
lighter-weight engine initially designed for gasoline
combustion but suitable to operate with many fuels. The
design is much simpler than the Otto 4-stroke internal
combustion engine and can be produced at a significant

2. Detailed Description of Operation

A. One Cylinder (Two Piston Plates)

The True Rotary Engine (TRE) consists of a cylinder
containing two concentric shafts, an inner solid shaft and an
outer hollow shaft . The two shafts are connected to Pistons
A1 and A2 as
shown in the Diagram. The device shown is the
Engine Output Load Distribution Device (LDD). The two
shafts will turn independently of each other. Each shaft is
connected to a clutch that is timed with the position of each

For more information on the detailed operation, you must
sign a non-disclosure agreement.  Please Contact Douglas
Bastian (click on the "Contact Us" link at the top of the page.)

View the
animated demo that dynamically shows how the
engine operates.

B. Two Cylinders (Four Pistons)

Two cylinders (four pistons) can be connected through a
single shaft to provide additional momentum and power.

Pistons A1 and A2 complete their revolutions with added
momentum and power, two more pistons, B1 and B2 in
chamber B can be connected as shown in diagram
here). The device shown is the Engine Output Load
Distributiion Device (LDD). The two cylinders would be
connected so that piston plate A1 plate would be the power
stroke segment and piston plate B1 would be going past the
exhaust port area.  The two pistons would ignite at
approximately 180 degrees from each other.  Similarly, piston
A2 and piston B2 would ignite at approximately 180 degrees
from each other.

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Prospectus for The True-Rotary Engine

August 24th, 2008