crankcase

Oil reservoir enclosure

A crankcase is the housing that encloses and protects an engine's crankshaft and related moving parts.

In internal combustion engines, it also serves as a reservoir for lubricating oil: Check the crankcase oil level before a long trip.

The term appears in compounds like crankcase ventilation and crankcase breather.

lubrication

motor oil

Petroleum for machinery

drain plug · oil level · oil reservoir · viscosity · synthetic oil · lubricant · oil change · oil filter · oil pump

housing

enclosure

Confined, bordered space

block · sump · oil pan · casting · aluminum · cast iron · frame · structure · support · foundation

sealing

gasket

Mechanical leak preventer

  • sealAuthentication stamp or mark
  • oil leakUnintended lubricant escape
  • siliconeFlexible synthetic polymer

o-ring · sealant · cork · rubber · leak prevention

ventilation

breather

Brief period of rest

pressure relief · emissions · baffle · condensation · vacuum · hose

engine

pistons

Force-transferring engine cylinders

journal · cylinder · four-stroke · internal combustion · two-stroke · engine block · reciprocating · counterweights

Categories
Opposites
engine component position

crankcasecylinder head

Engine's upper closure

head · valve cover · intake manifold

Family

crankcases

Familiarity
Top 500,000
Profile
Used worldwide · Timeless · Concrete · Rated G