Steam Engine Design

This page will be used to describe the OSE Open Source Steam Engine design, design issues, and completed drawings.

See bump valve prior art - http://www.rossen.ch/solar/wcengine.html

See also:


 * Existing and Historic Designs
 * Steam Engine Design/Historic
 * Steam Engine Design/White Cliffs
 * Other Engine Designs
 * Steam Engine Design/2009
 * Steam Engine Design/Solenoid
 * Steam Generator Designs
 * Steam Engine Design/Boiler

See Steam Engine Reviews for design criticism and Steam Engine Design/Suggestions.



=Bump Valve Engine Design=

Three points in the steam cycle are shown.

Design Updates:


 * 5/2/11 - Rev. 2: Initial bump valve design.
 * 5/6/11 - Rev. 3: Added flange on crankshaft end of cylinder and exhaust plenum.
 * 5/10/11 - Rev. 4: Improved bump valve added, cylinder liner is now thick.
 * 5/11/11 - Rev. 5: Added mount brackets, pillow block, extended piston stem.
 * 5/25/11 - Rev. 6: Widened cylinder flanges, dropped water vent, added sensor vent, cylinder liner to scale.
 * 7/20/11 - Rev. 7: Merged valve cover and mounting bracket.  Added oiler.

Description
This is a single-action uniflow steam engine that uses a bump valve to admit steam and an exhaust vent to emit cooled steam.

Design Features:


 * Simple design with a mix of fabricated and off-the-shelf parts.
 * Modular and stackable - cylinders can be ganged together to increase power.
 * Easy assembly - minimal welding
 * Repairable - comes apart for cleaning, maintenance, and repair.
 * Easy fabrication - lathing, milling, cutting, and drilling.
 * Self-lubricating - oil sprays.
 * Crank shaft can be configured for multiple cylinders.

Sub-assembly Designs:


 * Steam Engine Design/Bump Valve
 * Steam Engine Design/Cylinder
 * Steam Engine Design/Crank Shaft
 * Steam Engine Design/Piston
 * Steam Engine Design/Lubrication
 * Steam Engine Design/Exhaust

Alternative Designs:


 * Steam Engine Design/Piston Valve

=CAD View=