Steam Engine Breakdown

Main > Energy > Steam Engine

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(This page needs to be updated w.r.t the Steam Engine Product Template - Mjn)

Design

Prototype 1 Design Elements:

• Cylinder
• Piston Assembly
• Bump Valve Assembly
• Oil Sprayer
• Crankshaft

Later designs could include an oil separator on output, quick connectors for steam input and exhaust, oil-less design, etc.

Geometry

For analysis and dimension purposes, the following are defined:

Variable	Exlanation
Clen	Interior length of the cylinder.
Cdia	Interior diameter of the cylinder (or perhaps the sleeve).
Coff	Distance from the end of cylinder to the center of the crankshaft.
Ptrav	Total distance the piston travels.
Pstrt	Piston starting point (bump valve fully open).
Pmid	Piston mid-point. Max crankshaft offset.
Pend	Piston end point.
Prod	Piston rod length.
Soff	Crankshaft offset.

Questions to be answered given the geometry:

• How long does the piston rod (Prod) have to be?
• Given a Cdia, how long is Coff to clear the end of the cylinder?

Fabrication

Prototype 1 Fabrication Elements:

• Cylinder
  • Cylinder support assembly
  • Cylinder sleeve
• Piston
• Piston Rod
• Bump Valve
  • Ball
  • Spring
  • Bump Rod
  • Case
  • Steam Connection ??
• Oil sprayer
• Crankshaft
  • Shaft pieces (2)
  • Offset plates (2)
  • Crank piece (1)
  • Couplers (2)
  • Screws
  • Crankshaft support assembly

Performance

Components

Crankshaft

• no welding in this design.
• does require tapping holes for machine screws.
• needs counterbalance to not vibrate.

Bump Valve

This is one possible design for a bump valve.

Main > Energy > Steam Engine

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