Cylinder head with improved heat transfer and valve seat...

Details Cylinder head with improved heat transfer and valve seat... Cylinder head with improved heat transfer and valve seat...

2006-08-08

2006-08-08

Yuen, Henry C. (Department: 3747)

Internal-combustion engines

Cooling

With jacketed head and/or cylinder

C123S041770, C123S041310, C123S193500

Reexamination Certificate

active

07086357

ABSTRACT:
An improvement to a diesel engine cylinder head disclosed in U.S. Pat. No. 4,860,700, wherein the improvement comprises any of: a by-pass opening formed in partition walls thereof; a spine density of less than about five spines per square inch; spacing an inner chamber wall surface thereof with respect to an inner fire-face wall surface thereof between about 0.75 inches and 0.25 inches; coolant by-pass ports thereof having a cross-section of between about 0.1875 inches and 0.0625 inches; and a radial rib thereof extending complete and free of any rib opening.

REFERENCES:
patent: 3081755 (1963-03-01), Kotlin et al.
patent: 3377996 (1968-04-01), Kotlin et al.
patent: 4860700 (1989-08-01), Smith

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