Robert F. Bourque, Ph. D., P.E.
Bourque Engineering LLC
Los Alamos, New Mexico USA
bob@rfbourque.net
505-412-0194

The Bourque Steam Engine

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Chapter

Title

1

Background

2

Motivations For This Engine

3

Requirements and Constraints

4

Progress

5

Prototype Development

6

Description of the Bourque Cycle

7

Features of the Cycle

8

The Complexity Issue

9

Fuel Requirements

10

First Example Engine in a Vehicle

11

Description of the Expander

12

Expander Hot Cylinder Lubrication

13

Expander Piston Structural Analysis

14

Two More Engine and Vehicle Examples

15

Other Engine Components

16

Materials

17

Safety

18

Water Freezing

19

Control System

20

Starting Time

21

Summary

 

Acknowledgments

 

Some Unit Conversions

 

Notes and References

A Compact Pollution-Free
External Combustion Engine
with High Part-Load Efficiency

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Some Unit Conversions

This work was done in the USA using US Customary Units. For convenience, conversions to several SI units are given below.

  1.0 megapascal
=
145 pounds per square inch (psi)
  1.0 kilograms (kg)
=
2.204 pounds (lb)
  1.0 miles per hour (mph)
=
1.609 kilometers per hour (km/hr, kph)
  1.0 horsepower (hp)
=
0.7457 kilowatts (kW)
  1.0 miles per US gallon (mpg)
=
0.425 kilometers per liter (km/l)
  1.0 lb per hp-hour (lb/hp-hr)
=
609 grams per kW-hour (gm/kWh, gm/kW-hr)

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