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[krangk-keys] /ˈkræŋkˌkeɪs/
(in an internal-combustion engine) the housing that encloses the crankshaft, connecting rods, and allied parts.
Origin of crankcase
1875-80; crank1 + case2 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for crankcase
  • There is sufficient oil in the crankcase and even a brand new sparkplug, bright and shiny.
  • The worry is that condensation from a crankcase ventilation port could seep into the brake system vacuum port and freeze.
  • In a radial engine, the cylinders are arranged in a circular fashion around the crankcase.
  • They also reduce oil consumption and oil spotting by separating liquid oil from the gases and returning it to the crankcase.
  • crankcase oil must not be burned in modern diesel engines or engines with after-treatment technologies.
  • The premium on bulk motor vehicle oil continues to apply only to crankcase motor oil.
  • The cylinders, crankcase, and propeller rotate around the crankshaft as a unit.
  • Engaging all four wheels makes the engine work harder and increases crankcase losses.
British Dictionary definitions for crankcase


the metal housing that encloses the crankshaft, connecting rods, etc, in an internal-combustion engine, reciprocating pump, etc
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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