Self-energizing combustion seal flange

Details Self-energizing combustion seal flange Self-energizing combustion seal flange

2002-07-01

2004-05-25

Gall, Lloyd A. (Department: 3676)

Seal for a joint or juncture

Seal between fixed parts or static contact against...

Contact seal between parts of internal combustion engine

C277S592000, C277S595000, C277S600000, C277S601000

Reexamination Certificate

active

06739595

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates to a cylinder head gasket for an internal combustion engine. More particularly, the invention relates to cylinder head gasket having a self-energizing combustion seal flange.
BACKGROUND OF THE INVENTION
Gaskets
10
are often used to provide a seal between an engine block
12
and a cylinder head
14
of an internal combustion engine. As shown in
FIGS. 1-3
, known cylinder head gaskets
10
typically include a flange
16
that extends around the periphery
18
of cylinder bores formed in the gasket
10
to provide a combustion seal for maintaining the high temperature gases of combustion within the cylinder bores. A typical combustion flange
16
has a generally semicircular cross-sectional shape with the outmost portion
20
of the flange
16
extending away from the periphery
18
and into the combustion bore.
Referring to
FIGS. 1 and 2
, during operation of the engine, combustion explosion forces (represented by arrows A) act upon the flange
16
. As can be seen in
FIG. 3
, the combustion forces A
C
try to pass between the overlap of the flange
16
and the cylinder head
14
and heel of the flange
16
and the engine block
12
. The tangential forces A
T
acting on the flange
16
pushes ends
22
of the flange
16
downward and way from the engine block
12
and cylinder head
14
, thereby reducing sealing and promoting combustion leaks between the flange
16
and the hardware
12
and
14
. Accordingly, more durable combustion seals are required to reduce the opportunity for combustion leaks and increase flange life.
SUMMARY OF THE INVENTION
The present invention provides a gasket having a core and a self-energizing seal flange. The core includes at least one gasket plate, wherein the plate has at least first apertures for mating with cylinder bores of an engine block.
In accordance with the invention, the self-energizing seal flange has a generally convex center face that directly addresses a flame front of a combustion bore opening in an otherwise generally concave combustion flange cross-sectional profile. Such a design produces a generally flatter medial profile or face to address the flame front of the combustion zone, thereby minimizing deleterious tangential forces that operate to create gasket leaks and to shorten the life of the flange.


REFERENCES:
patent: 1779616 (1930-10-01), Oven
patent: 1823284 (1931-09-01), Oven
patent: 3924863 (1975-12-01), Nakano et al.
patent: 4776602 (1988-10-01), Gallo
patent: 5921558 (1999-07-01), Kozerski
patent: 6315303 (2001-11-01), Erb et al.

Affiliated with

Also associated with

Rating

Self-energizing combustion seal flange does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Self-energizing combustion seal flange, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Self-energizing combustion seal flange will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3255695