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

Patent · Thu Jan 01 00:00:00 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, Kansas City, MO (United States); National Renewable Energy Laboratory (NREL), Golden, CO (United States)
• Sponsoring Organization: USDOE
• 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

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