# Directory of Internal Combustion Engines Resources

Internal combustion (IC) engines are prime movers that use a Carnot cycle. They are heat engines and use a temperature difference to do work. They burn compressed mixtures of air and fuel. IC engines have relatively high power to weight ratios, and are far more autonomous than electric motor prime movers. All prime movers have many uses. IC engines are used for: transport vehicles (motorcycles, automobiles, trains, aircraft, boats/ships), electric generators (mobile, fixed), pumps (mobile, fixed), gas compressors, construction vehicles (cranes, earthmovers, pavers) and equipment (crushers, mixers), agriculture vehicles (tractors, harvesters/combines), gardening vehicles (tractors) and equipment (mowers, chain and rotary saws, tillers, mulchers, chippers, blowers, snow throwers/blowers), recreation vehicles (model aircraft, boating, automobile racing, RVs) and more.

## Resources in This Category

• #### Auto Math Calculations

http://www.smokemup.com/auto_math/
Features technical articles and several calculation tools for evaluating the thermodynamic efficiency of engines.

• #### Carnot Cycle

http://hyperphysics.phy-astr.gsu.edu/hbase/thermo/carnot.html
Explains the basics of the Carnot cycle. Includes thermodynamic diagrams and theorems.

• #### Concept Engine

http://conceptengine.tripod.com/
Describes different engine design concepts, sorted by nation, as well as some support systems. Addresses efficiency and performance, insights, characteristics, with pictures and animations.

• #### CSU Engine Web Pages

http://www.engr.colostate.edu/~allan/engines.html
Thermodynamics, heat transfer and fluid mechanics in internal combustion engines. Applets are used to perform simple calculations. Developed at Colorado State University.

• #### Four Stroke Internal Combustion Engine

http://www.grc.nasa.gov/WWW/K-12/airplane/engopt.html
Explains the strokes of internal combustion engines using animations from the Glenn Research Center.

• #### HowStuffWorks: How Automobile Ignition Systems Work

http://www.howstuffworks.com/ignition-system.htm
Explains the basics of ignition systems in Otto cycle engine. Includes technical animations and drawings.

• #### HowStuffWorks: How Car Engines Work

http://www.howstuffworks.com/engine.htm
Explains the basics of Otto cycle engines. Include technical drawings and animations.

• #### HowStuffWorks: How Does a Miller Cycle Engine Work

http://www.howstuffworks.com/question132.htm
Explains the technical and historical background of the Miller cycle.

• #### Improve MPG: The Factors Affecting Fuel Economy

http://www.omninerd.com/articles/Improve_MPG_The_Factors_Affecting_Fuel_Efficiency
Presents a methodology to assess engine's performance as well as one's own driving habits to improve driving efficiency.

• #### Kruse Limited Temperature Cycle

http://www.kruse-ltc.com/
Describes an innovative thermodynamic engine cycle which limits peak combustion temperature in direct injection petrol, gasoline and diesel engines. Includes engine cycle overview and description, references, diagrams and patents.

• #### Wikipedia: Carnot Heat Engine

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

• #### Wikipedia: Internal Combustion Engine

http://en.wikipedia.org/wiki/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.

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