Dictionary of automotive terms. 2015.
primary compression ratio — The degree of compression achieved in the crankcase area below the piston of a two stroke engine when the piston moves down and compresses the mixture supplied into the crankcase … Dictionary of automotive terms
compression — [1] Applying pressure to a spring, or any springy substance, thus causing it to reduce its length in the direction of the compressing force. [2] Applying pressure to a gas, thus causing a reduction in volume. [3] One of the essential factors in a … Dictionary of automotive terms
compression ratio — [1] When the piston is at the bottom of its travel (BDC), the volume of cylinder is measured (suppose the volume is X). Then the piston is placed at the top of its travel (TDC) and the volume of the cylinder is measured (suppose this volume is Y) … Dictionary of automotive terms
compression gauge — [1] A gauge used to test the compression in the cylinders. A poor compression reading can indicate that there is leakage through the valves or the piston rings. In two stroke engines, it could indicate that there is poor primary compression… … Dictionary of automotive terms
Compression fracture — Classification and external resources Compression fracture of the fourth lumbar vertebra post falling from a height. ICD 9 … Wikipedia
secondary compression — A term that is used in two stroke engines. Primary compression takes place in the crankcase and is then pushed up into the combustion chamber where secondary compression takes place as the piston squeezes the mixture. If the crankcase seals are… … Dictionary of automotive terms
crankcase compression — The primary compression in a two stroke engine located below the pistons and enables a more fresh charge to be fed into the cylinder. Also called crankcase pre compression … Dictionary of automotive terms
Lossless data compression — is a class of data compression algorithms that allows the exact original data to be reconstructed from the compressed data. The term lossless is in contrast to lossy data compression, which only allows an approximation of the original data to be… … Wikipedia
Cold compression therapy — combines two of the principles of R.I.C.E. (Rest, Ice, Compression, Elevation) to reduce pain and swelling from a sports or activity injury to soft tissues and recommended by orthopedic surgeons following surgery. The therapy is especially useful … Wikipedia
United States presidential primary — The series of presidential primary elections and caucuses is one of the first steps in the process of electing the President of the United States of America. The primary elections are run by state and local governments, while caucuses are private … Wikipedia
