Internal combuston engine having separated cylinder head oil drains and crankcase ventilation passages

Patent · Thu Jan 01 04:00:00 EST 1998

OSTI ID:872061

Boggs, David Lee ^[1]; Baraszu, Daniel James ^[2]; Foulkes, David Mark ^[3]; Gomes, Enio Goyannes ^[4]

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1. Bloomfield Hills, MI
2. Plymouth, MI
3. Erfstadt, DE
4. Ann Arbor, MI

An internal combustion engine includes separated oil drain-back and crankcase ventilation passages. The oil drain-back passages extend from the cylinder head to a position below the top level of oil in the engine's crankcase. The crankcase ventilation passages extend from passages formed in the main bearing bulkheads from positions above the oil level in the crankcase and ultimately through the cylinder head. Oil dams surrounding the uppermost portions of the crankcase ventilation passages prevent oil from running downwardly through the crankcase ventilation passages.

• Research Organization: Midwest Research Institute; National Renewable Energy Laboratory (NREL), Golden, CO
• Sponsoring Organization: United States Department of Energy
• DOE Contract Number: AC36-83CH10093
• Assignee: Ford Global Technologies, Inc. (Dearborn, MI)
• Patent Number(s): US 5852992
• Application Number: 08/976,940
• OSTI ID: 872061
• Country of Publication: United States
• Language: English

Related Subjects

/123/184/
bearing
below
bulkheads
combustion
combustion engine
combuston
crankcase
crankcase ventilation
cylinder
cylinder head
dams
downwardly
drain-back
drains
engine
extend
formed
head
internal
internal combustion
level
main
oil
oil drain-back
passages
passages extend
passages formed
portions
position
positions
prevent
running
separated
separated oil
surrounding
top
ultimately
uppermost
ventilation
ventilation passages