Kruse Limited Temperature Cycle
A new thermodynamic internal combustion engine cycle for emission reduction and improved efficiency for direct injection petrol, gasoline and diesel engines.
http://www.kruse-ltc.com

HowStuffWorks: How Does a Miller Cycle Engine Work
How does a Miller-cycle engine work?
http://www.howstuffworks.com/question132.htm

Wikipedia: Internal Combustion Engine
Free encyclopedia article covers internal combustion engine technology and applications. Addresses operation modes, thermodynamic cycle and efficiency, fuel types, support systems and parts.
http://en.wikipedia.org/wiki/Internal_combustion_engine

Wikipedia: Carnot Heat Engine
Free encyclopedia article explaining the Carnot cycle, with emphasis on engines.
http://en.wikipedia.org/wiki/Carnot_heat_engine

Engine Builder
Monthly business magazine serving the machine shop, custom engine, performance engine and production engine building markets.
http://www.engine-builder.com/index.htm

Carnot cycle
Carnot Cycle (Heat Engine)
http://www.phy.ntnu.edu.tw/java/carnot/carnot.html

The Water Cycle
The Water Cycle, from the U.S. Geological Survey's Water Science for Schools site. Our water cycle diagram is available in 60 languages.
http://ga.water.usgs.gov/edu/watercycle.html

The Natural Life Cycle of Mailing Lists
Every list seems to go through the same cycle.
http://oii.org/lists/lifecycle.html

,MA - AJ Cycle Motorcycle Dealer BMW, Moto Guzzi
AJ Cycle specializing in personalized sales and service of the finest German machinery on Earth.
http://www.vtweb.com/AJCYCLE/index.html

HowStuffWorks: How Automobile Ignition Systems Work
The ignition system brings your car’s engine and subsystems together. Learn about the parts of your ignition system and innovations in ignition systems.
http://www.howstuffworks.com/ignition-system.htm