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Performance Trends Inc
Producing Quality Computer Tools for Racers and Engine Builders since 1986
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Producing Quality Computer Tools for Racers and Engine Builders since 1986
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Engine DisplacementWhat is Engine Displacement?Engine Displacement is the total size or volume of all the cylinders of an engine. You take the volume of each cylinder from Top Dead Center to Top Dead Bottom and then times the volume by the number of cylinders. But Engine Displacement differs from Cylinder Volume by excluding the volume of the combustion chamber. Units of MeasurementEnglish CustomaryIn North America (mostly the United States) they use the old English Customary measuring system. They use Cubic Inches or CID. Some of the old engines that were measured with these units would be: MetricCubic CentimetersIn most other countries and other vehicle manufactures use the Metric Measuring system. Most smaller engines such as Motorcycles and ATV's are measured in CC's (Cubic
Centimeters). Some of the sizes used for motorcycles and ATV's are: Please keep in mind that these categories are for the bigger more popular race series. There are many other race categories and engine sizes from other manufacturers. LitersMost larger engines now days (usually in automobiles and trucks) use liters instead of CC's. Most of us remember the Mustang 5.0 liter which was 302 cubic inches. Programs that take Engine Displacement into accountWe have 3 programs that work with Engine Displacement when conducting Engine Simulation: Engine Analyzer v3.4, Engine Analyzer Plus v3.4. And Engine Analyzer Pro v3.9 also uses Cylinder Volume in Engine Simulation. And we have 5 other programs that take Engine Displacement into account when making calculations. Compression Ratio Calculator v2.3, Compression Ratio Calculator Plus v2.3 Port Flow Analyzer v3.5 with Valve Opener and Engine Log Book v1.1.
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