crank·​case | \ ˈkraŋk-ˌkās How to pronounce crankcase (audio) \

Definition of crankcase

: the housing of a crankshaft

Examples of crankcase in a Sentence

Recent Examples on the Web Some emissions control systems also rely on this negative pressure to prevent crankcase fumes from escaping. Mike Allen, Popular Mechanics, "How to Find a Vacuum Leak," 2 Oct. 2020 People in four-wheeled vehicles — at least some of them — were hotter than a crankcase. Steve Rubenstein,, "From the Panhandle to the Pacific: A car-free route opens in Golden Gate Park," 23 Sep. 2020 If your crankcase is overfilled, have the excess drained. Motormouth Bob Weber, Star Tribune, "Motormouth: When storing car, don't disconnect battery," 14 Aug. 2020 An engine's key internal components should always have a thin coating of oil to keep them lubricated and protected; as your vehicle sits, gravity slowly pulls the oil down to the crankcase. Maxwell B. Mortimer, Car and Driver, "What Should I Do to Care for My Car While I'm Staying at Home?," 10 Apr. 2020 But overfilling the crankcase by 1 quart is not likely to cause any problem whatsoever. Ray Magliozzi,, "Car Talk: He doesn’t want to take parents’ Crown Vic to college," 6 Oct. 2019 The aluminum positive crankcase ventilation valves can fall apart., "Amazon profit plunges with its quicker delivery plan," 25 Oct. 2019 The aluminum positive crankcase ventilation valves can fall apart. NBC News, "Subaru recalls 400,000 cars, SUVs for engine control, debris trouble," 25 Oct. 2019 The automaker said the aluminum positive crankcase ventilation valves can fall apart, potentially causing debris to fall into the engine and cause a power loss. CBS News, "Subaru recalls 400,000 vehicles over engine control and valve defects," 24 Oct. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'crankcase.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of crankcase

circa 1878, in the meaning defined above

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Time Traveler for crankcase

Time Traveler

The first known use of crankcase was circa 1878

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Statistics for crankcase

Last Updated

7 Oct 2020

Cite this Entry

“Crankcase.” Dictionary, Merriam-Webster, Accessed 30 Oct. 2020.

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How to pronounce crankcase (audio)

English Language Learners Definition of crankcase

technical : the part of an engine that contains the crankshaft

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