US5088467A — Electromagnetic injection valve

Claim 1

Independent Claim 305 words

In combination with an electromagnetic duty cycle type liquid fuel metering valving assembly having liquid fuel metering port means and valving means cyclically moved to opened and closed positions with respect to said liquid fuel metering port means to thereby correspondingly intermittently permit and terminate the flow of said liquid fuel through said liquid fuel metering port means as to thereby control the rate of metered liquid fuel discharged through and from said liquid fuel metering port means to an associated combustion engine, first passage means communicating at one end with said liquid fuel metering port means downstream thereof and at an other end communicating with said engine, second passage means for supplying fuel atomizing air to said first passage means for creating from said air and said metered liquid fuel a fuel-air mixture, wherein at least a portion of said first passage means is tapered as to thereby enhance the mixing of said fuel-air mixture flowing therethrough and toward said engine, wherein said first passage means is comprised of a body portion forming a part of said duty cycle type liquid fuel metering valving assembly and is further comprised of conduit means operatively connected to said body portion, wherein said tapered portion is formed in said conduit means, wherein said second passage means is so formed as to supply said atomizing air in a direction of flow which generally transversely intersects the direction of flow of said metered liquid fuel, wherein said first passage means comprises a chamber-like portion situated immediately downstream of said liquid fuel metering port means, and wherein said tapered portion is situated downstream of said chamber-like portion, wherein said second passage means communicates with said first passage means by communicating directly with said chamber-like portion, wherein said second passage means comprises a plurality of atomizing air directing and supplying passages.

Claim 2

Dependent Claim 305 words

In combination with an electromagnetic duty cycle type liquid fuel metering valving assembly having liquid fuel metering port means and valving means cyclically moved to opened and closed positions with respect to said liquid fuel metering port means to thereby correspondingly intermittently permit and terminate the flow of said liquid fuel through said liquid fuel metering port means as to thereby control the rate of metered liquid fuel discharged through and from said liquid fuel metering port means to an associated combustion engine, first passage means communicating at one end with said liquid fuel metering port means downstream thereof and at an other end communicating with said engine, second passage means for supplying fuel atomizing air to said first passage means for creating from said air and said metered liquid fuel a fuel-air mixture, wherein at least a portion of said first passage means is tapered as to thereby enhance the mixing of said fuel-air mixture flowing therethrough and toward said engine, wherein said first passage means is comprised of a body portion forming a part of said duty cycle type liquid fuel metering valving assembly and is further comprised of conduit means operatively connected to said body portion, wherein said tapered portion is formed in said conduit means, wherein said second passage means is so formed as to supply said atomizing air in a direction of flow which generally transversely intersects the direction of flow of said metered liquid fuel, wherein said first passage means comprises a chamber-like portion situated immediately downstream of said liquid fuel metering port means, and wherein said tapered portion is situated downstream of said chamber-like portion, wherein said second passage means communicates with said first passage means by communicating directly with said chamber-like portion, wherein said second passage means comprises a plurality of atomizing air directing and supplying passages.

Claim 3

Dependent Claim 276 words

In combination with an electromagnetic duty cycle type liquid fuel metering valving assembly having liquid fuel metering port means and valving means cyclically moved to opened and closed positions with respect to said liquid fuel metering port means to thereby correspondingly intermittently permit and terminate the flow of said liquid fuel through said liquid fuel metering port means as to thereby control the rate of metered liquid fuel discharged through and from said liquid fuel metering port means to an associated combustion engine, first passage means communicating at one end with said liquid fuel metering port means downstream thereof and at an other end communicating with said engine, second passage means for supplying fuel atomizing heated air to said first passage means for creating from said air and said metered liquid fuel a fuel-air mixture, said second passage means being effective to direct said heated air against an external surface of said first passage means in order to heat said first passage means and thereby enhance the expansion and intermixing of said fuel-air mixture flowing through said first passage means, wherein said first passage means comprises a generally tubular and axially elongated conduit member comprising outer surface means and inner surface means, wherein said second passage means directs said heated air to said outer surface means at an area relatively remote from said one end as to deliver the most heat to said conduit member at said area, and wherein said second passage means continues the flow of said heated air to an area at least near said one end for delivery to and flow against said inner surface means as part of said fuel-air mixture.

Claim 4

Dependent Claim 276 words

In combination with an electromagnetic duty cycle type liquid fuel metering valving assembly having liquid fuel metering port means and valving means cyclically moved to opened and closed positions with respect to said liquid fuel metering port means to thereby correspondingly intermittently permit and terminate the flow of said liquid fuel through said liquid fuel metering port means as to thereby control the rate of metered liquid fuel discharged through and from said liquid fuel metering port means to an associated combustion engine, first passage means communicating at one end with said liquid fuel metering port means downstream thereof and at an other end communicating with said engine, second passage means for supplying fuel atomizing heated air to said first passage means for creating from said air and said metered liquid fuel a fuel-air mixture, said second passage means being effective to direct said heated air against an external surface of said first passage means in order to heat said first passage means and thereby enhance the expansion and intermixing of said fuel-air mixture flowing through said first passage means, wherein said first passage means comprises a generally tubular and axially elongated conduit member comprising outer surface means and inner surface means, wherein said second passage means directs said heated air to said outer surface means at an area relatively remote from said one end as to deliver the most heat to said conduit member at said area, and wherein said second passage means continues the flow of said heated air to an area at least near said one end for delivery to and flow against said inner surface means as part of said fuel-air mixture.

Claim 5

Dependent Claim 152 words

In combination with an electromagnetic duty cycle type liquid fuel metering valving assembly having liquid fuel metering port means and valving means cyclically moved to opened and closed positions with respect to said liquid fuel metering port means to thereby correspondingly intermittently permit and terminate the flow of said liquid fuel through said liquid fuel metering port means as to thereby control the rate of metered liquid fuel discharged through and from said liquid fuel metering port means to an associated combustion engine, first passage means communicating at one end with said liquid fuel metering port means downstream thereof and at an other end communicating with said engine, and second passage means generally circumscribing said first passage means and communicating with said first passage means, said second passage means being effective for supplying fuel atomizing air to said first passage means for creating fuel atomizing air metered liquid fuel a fuel-air mixture.

Claim 6

Dependent Claim 152 words

In combination with an electromagnetic duty cycle type liquid fuel metering valving assembly having liquid fuel metering port means and valving means cyclically moved to opened and closed positions with respect to said liquid fuel metering port means to thereby correspondingly intermittently permit and terminate the flow of said liquid fuel through said liquid fuel metering port means as to thereby control the rate of metered liquid fuel discharged through and from said liquid fuel metering port means to an associated combustion engine, first passage means communicating at one end with said liquid fuel metering port means downstream thereof and at an other end communicating with said engine, and second passage means generally circumscribing said first passage means and communicating with said first passage means, said second passage means being effective for supplying fuel atomizing air to said first passage means for creating fuel atomizing air metered liquid fuel a fuel-air mixture.

Claim 7

Dependent Claim 199 words

In combination with an electromagnetic duty cycle type liquid fuel metering valving assembly having liquid fuel metering port means and valving means cyclically moved to opened and closed positions with respect to said liquid fuel metering port means to thereby correspondingly intermittently permit and terminate the flow of said liquid fuel through said liquid fuel metering port means as to thereby control the rate of metered liquid fuel discharged through and from said liquid fuel metering port means to an associated combustion engine, first passage means communicating at one end with said liquid fuel metering port means downstream thereof and at an other end communicating with said engine, second passage means generally circumscribing said first passage means and communicating with said first passage means, said second passage means being effective for supplying fuel atomizing heated air to said first passage means for creating from said air and said metered liquid fuel a fuel-air mixture, said second passage means being effective to direct said heated air against an external surface of said first passage means in order to heat said first passage means and thereby enhance the expansion and intermixing of said fuel-air mixture flowing through said first passage means.

Claim 8

Dependent Claim 199 words

In combination with an electromagnetic duty cycle type liquid fuel metering valving assembly having liquid fuel metering port means and valving means cyclically moved to opened and closed positions with respect to said liquid fuel metering port means to thereby correspondingly intermittently permit and terminate the flow of said liquid fuel through said liquid fuel metering port means as to thereby control the rate of metered liquid fuel discharged through and from said liquid fuel metering port means to an associated combustion engine, first passage means communicating at one end with said liquid fuel metering port means downstream thereof and at an other end communicating with said engine, second passage means generally circumscribing said first passage means and communicating with said first passage means, said second passage means being effective for supplying fuel atomizing heated air to said first passage means for creating from said air and said metered liquid fuel a fuel-air mixture, said second passage means being effective to direct said heated air against an external surface of said first passage means in order to heat said first passage means and thereby enhance the expansion and intermixing of said fuel-air mixture flowing through said first passage means.

Claim 9

Dependent Claim 223 words

In combination with an electromagnetic duty cycle type liquid fuel metering valving assembly having liquid fuel metering port means and valving means cyclically moved to opened and closed positions with respect to said liquid fuel metering port means to thereby correspondingly intermittently permit and terminate the flow of said liquid fuel through said liquid fuel metering port means as to thereby control the rate of metered liquid fuel discharged through and from said liquid fuel metering port means to an associated combustion engine, first passage means communicating at one end with said liquid fuel metering port means downstream thereof and at an other end communicating with said engine, said first passage means being of generally tubular configuration and comprising inner surface means defining axially extending inner passage means and axially extending external surface means generally circumscribing said inner passage means, second passage means for supplying fuel atomizing heated air to said inner passage means for creating from said air and said metered liquid fuel a fuel-air mixture, said second passage means being effective to supply said heated air by first causing said heated air to flow against and along said external surface means of said first passage means in order to heat said first passage means and thereby enhance the expansion and intermixing of said fuel-air mixture flowing through said inner passage means.

Claim 10

Dependent Claim 223 words

In combination with an electromagnetic duty cycle type liquid fuel metering valving assembly having liquid fuel metering port means and valving means cyclically moved to opened and closed positions with respect to said liquid fuel metering port means to thereby correspondingly intermittently permit and terminate the flow of said liquid fuel through said liquid fuel metering port means as to thereby control the rate of metered liquid fuel discharged through and from said liquid fuel metering port means to an associated combustion engine, first passage means communicating at one end with said liquid fuel metering port means downstream thereof and at an other end communicating with said engine, said first passage means being of generally tubular configuration and comprising inner surface means defining axially extending inner passage means and axially extending external surface means generally circumscribing said inner passage means, second passage means for supplying fuel atomizing heated air to said inner passage means for creating from said air and said metered liquid fuel a fuel-air mixture, said second passage means being effective to supply said heated air by first causing said heated air to flow against and along said external surface means of said first passage means in order to heat said first passage means and thereby enhance the expansion and intermixing of said fuel-air mixture flowing through said inner passage means.

Claim 11

Dependent Claim 31 words

The combination according to claim 2 wherein at least a portion of said inner surface means is of tapered decreasing flow area in the direction of flow of said fuel-air mixture.

Claim 12

Dependent Claim 33 words

The combination according to claim 2 wherein the cross-sectional thickness of said conduit member is of relatively reduced thickness in said area as to thereby be able to more rapidly transmit heat therethrough.

Claim 13

Dependent Claim 16 words

The combination according to claim 2 wherein said second passage means is a single flow passage.

Claim 14

Dependent Claim 39 words

The combination according to claim 7 wherein said relatively reduced cross-sectional thickness is formed by a reduction of material comprising said conduit member with said reduction occurring generally into said outer surface means and toward said inner surface means.

Claim 15

Dependent Claim 16 words

The combination according to claim 9 wherein said second passage means is a single flow passage.

Claim 16

Dependent Claim 27 words

The combination according to claim 7 wherein said relatively reduced cross-sectional thickness is attained by an annular recess formed into said outer surface of said conduit member.

Claim 17

Dependent Claim 16 words

The combination according to claim 11 wherein said second passage means is a single flow passage.

Claim 18

Dependent Claim 31 words

The combination according to claim 5 wherein at least a portion of said inner passage means is of tapered decreasing flow area in the direction of flow of said fuel-air mixture.

Claim 19

Dependent Claim 28 words

The combination according to claim 5 wherein said second passage means directs said heated air to said external surface means at an area remote from said one end.

Claim 20

Dependent Claim 43 words

The combination according to claim 14 wherein said first passage means comprises a conduit member, and wherein the cross-sectional thickness of said conduit member is of relatively reduced thickness in said area as to thereby be able to more rapidly transmit heat therethrough.

Claim 21

Dependent Claim 28 words

In combination according to claim 13 wherein said second passage means directs said heated air to said external surface means at an area remote from said one end.

Claim 22

Dependent Claim 69 words

The combination according to claim 3 wherein said first passage means comprises a first conduit member, wherein said second passage means comprises a second conduit member, wherein said first conduit member is supported as to be generally centrally of and generally within said second conduit member, and wherein said second passage means exists generally between said first and second conduit members and generally circumferentially about said first conduit member.

Claim 23

Dependent Claim 63 words

The combination according to claim 17 wherein said second conduit member comprises transverse wall means situated axially between said liquid fuel metering port means and said one end of said first passage means, and further comprising aperture means formed through said transverse wall means to complete communication between said liquid fuel metering port means and said one end of said first passage means.

Claim 24

Dependent Claim 75 words

The combination according to claim 18 wherein said one end of said first passage means also comprises a first end of said first conduit member, wherein said transverse wall means is axially spaced from said first end of said first conduit member, and wherein said second passage means supplies said air to said first passage means by flowing said air between said transverse wall means and said first end and into said first passage means.

Claim 25

Dependent Claim 69 words

The combination according to claim 4 wherein said first passage means comprises a first conduit member, wherein said second passage means comprises a second conduit member, wherein said first conduit member is supported as to be generally centrally of and generally within said second conduit member, and wherein said second passage means exists generally between said first and second conduit members and generally circumferentially about said first conduit member.

Claim 26

Dependent Claim 63 words

The combination according to claim 20 wherein said second conduit member comprises transverse wall means situated axially between said liquid fuel metering port means and said one end of said first passage means, and further comprising aperture means formed through said transverse wall means to complete communication between said liquid fuel metering port means and said one end of said first passage means.

Claim 27

Dependent Claim 77 words

The combination according to claim 21 wherein said one end of said first passage means also comprises a first end of said first conduit member, wherein said transverse wall means is axially spaced from said first end of said first conduit member, and wherein said second passage means supplies said heated air to said first passage means by flowing said heated air between said transverse wall means and said first end and into said first passage means.

Annuity Stage	Window Opens	Payment Deadline	Surcharge Period Until	Estimated Fee	Status
3.5 Years (Year 4)	1995-02-17	1995-08-19	1996-02-18	$2000.00	Window Closed / Lapsed
7.5 Years (Year 8)	1999-02-17	1999-08-19	2000-02-18	$3760.00	Window Closed / Lapsed
11.5 Years (Year 12)	2003-02-17	2003-08-19	2004-02-18	$7700.00	Window Closed / Lapsed

Electromagnetic injection valve

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