US5609143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust gas recirculation valve for an internal combustion engine
Assignee: Robert Bosch GmbH
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Filing: 1995-11-17
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Granted: 1997-03-11
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Expires: 2015-11-17
Abstract
Abstract An exhaust gas recirculation valve which comprises a stub pipe which protrudes into a pipe and with whose opening a valve element interacts, which valve element is moved by an actuator, the actuator being connected to the stub pipe by means of a connecting part in such a way that the above mentioned parts can be jointly inserted through a first opening into the pipe, a closing part of the stub pipe closing a second opening of the pipe, at which location an outwardly protruding end of the stub pipe is connected to an exhaust gas recirculation conduit. The connecting part advantageously also serves to relay measurements of a measurement recording device, recorded at the stub pipe to the analysis device of the measuring device.
Inventors
- 👤 Gerhard Schellenberg
- 👤 Johannes Meiwes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:13
CPC Classifications
F; F02; F02M; F02M26/00; F02M26/52; F02M26/55; F02M26/58; F02M26/13; F02M26/17; F02M26/18; F02M26/21; F02M26/22; F02M26/45; F02M26/46; F02M26/47; F02M26/65; F02M26/66; F02M26/68; F02M26/48; F02M26/72
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
245 words
An exhaust gas recirculation valve for controlling exhaust gas recirculation quantities which are supplied to an induction side of an internal combustion engine, comprising an air flow pipe (1), a stub pipe (12), which protrudes into said pipe (1), said stub pipe (12) is connected to the exhaust gas collecting system, which forms part of an exhaust gas recirculation conduit (14), a valve set (16) is formed on an end-face opening on which a valve element (18) actuated by an actuator (22) interacts, wherein the valve element (18) is configured as a disk valve element with a valve disk (17) at one end of a valve stem (19) which protrudes into the air flow pipe (1) through a first opening (3), opposite the stub pipe (12), in the wall of the air flow pipe and the actuator (22) is rigidly and releasably connected to the pipe in the region of the first opening (3) by means of a casing (21) and the casing (21) has a rigid connection to the stub pipe (12) by means of a connecting part (32), and a second opening (5), in the wall of the air flow pipe (1), opposite to the first opening (3), said second opening (5) can be closed by a closing part (9) which is permanently connected to the stub pipe (12) to position said stub pipe and, together with the stub pipe (12) can be inserted into the pipe (1) through the first opening (3).
Claim 2
Dependent Claim
245 words
An exhaust gas recirculation valve for controlling exhaust gas recirculation quantities which are supplied to an induction side of an internal combustion engine, comprising an air flow pipe (1), a stub pipe (12), which protrudes into said pipe (1), said stub pipe (12) is connected to the exhaust gas collecting system, which forms part of an exhaust gas recirculation conduit (14), a valve set (16) is formed on an end-face opening on which a valve element (18) actuated by an actuator (22) interacts, wherein the valve element (18) is configured as a disk valve element with a valve disk (17) at one end of a valve stem (19) which protrudes into the air flow pipe (1) through a first opening (3), opposite the stub pipe (12), in the wall of the air flow pipe and the actuator (22) is rigidly and releasably connected to the pipe in the region of the first opening (3) by means of a casing (21) and the casing (21) has a rigid connection to the stub pipe (12) by means of a connecting part (32), and a second opening (5), in the wall of the air flow pipe (1), opposite to the first opening (3), said second opening (5) can be closed by a closing part (9) which is permanently connected to the stub pipe (12) to position said stub pipe and, together with the stub pipe (12) can be inserted into the pipe (1) through the first opening (3).
Claim 3
Dependent Claim
67 words
The exhaust gas recirculation valve as claimed in claim 1, wherein a measuring device for recording exhaust gas quantities supplied through the exhaust gas recirculation valve is arranged on the stub pipe (12) and openings (34, 35) lead form the measuring device via the connecting part (32) and the casing (21) of the actuator (22) top an analysis device for the values recorded by the analysis device.
Claim 4
Dependent Claim
56 words
The exhaust gas recirculation valve as claimed in claim 2, wherein the stub pipe (12) and the closing part (9) are manufactured from thin-walled sheet metal and are permanently and rigidly connected together by means of a plate (1) which is also used for connecting the stub pipe (12) to the exhaust gas recirculation conduit (14).
Claim 5
Dependent Claim
56 words
The exhaust gas recirculation valve as claimed in claim 1, wherein the stub pipe (12) and the closing part (9) are manufactured from thin-walled sheet metal and are permanently and rigidly connected together by means of a plate (1) which is also used for connecting the stub pipe (12) to the exhaust gas recirculation conduit (14).
Claim 6
Dependent Claim
22 words
The exhaust gas recirculation valve as claimed in claim 4, wherein the casing (21) accommodating the actuator (22) is manufactured from plastic.
Claim 7
Dependent Claim
35 words
The exhaust gas recirculation valve as claimed in claim 4, wherein the connecting part (32) comprises stamped sheet-metal parts joined together, which parts are permanently connected to the stub pipe, on and to the casing.
Claim 8
Dependent Claim
40 words
The exhaust gas recirculation valve as claimed in claim 6, wherein the closing part (9) forms a recess in a run of the air flow pipe (1) with the stub pipe (12) freely protruding into the pipe through this recess.
Claim 9
Dependent Claim
131 words
An exhaust gas recirculation valve for controlling exhaust gas recirculation quantities which are supplied to an induction side of an internal combustion engine, comprising an air flow pipe (1), a stub pipe (12) which protrudes into said pipe (1), said stub pipe is connected to an exhaust gas collecting system, which forms part of an exhaust gas recirculation conduit (14), a valve seat (16) on an end-face opening of said stub pipe, a valve element (18) actuated by an actuator (22) interacts with said valve seat, at least one part of a measuring device in the form of a measurement recording device for recording exhaust gas quantities supplied through the exhaust gas recirculation valve is arranged on the stub pipe (12) upstream of an opening into the air flow pipe (1).
Claim 10
Dependent Claim
131 words
An exhaust gas recirculation valve for controlling exhaust gas recirculation quantities which are supplied to an induction side of an internal combustion engine, comprising an air flow pipe (1), a stub pipe (12) which protrudes into said pipe (1), said stub pipe is connected to an exhaust gas collecting system, which forms part of an exhaust gas recirculation conduit (14), a valve seat (16) on an end-face opening of said stub pipe, a valve element (18) actuated by an actuator (22) interacts with said valve seat, at least one part of a measuring device in the form of a measurement recording device for recording exhaust gas quantities supplied through the exhaust gas recirculation valve is arranged on the stub pipe (12) upstream of an opening into the air flow pipe (1).
Claim 11
Dependent Claim
28 words
The exhaust gas recirculation valve as claimed in claim 8, wherein the air flow pipe (1) is part of an air induction system of the internal combustion engine.
Claim 12
Dependent Claim
97 words
The exhaust gas recirculation valve as claimed in claim 8, wherein the valve element (18) is configured as a disk valve element with a valve disk (17) at one end of a valve stem (19) which protrudes into the air flow pipe (1) through an opening (3) in said air flow pipe opposite the stub pipe (12), and the actuator (22) is releasably connected to the pipe in a region of a first opening (3) and has a permanent connection to that part on the stub pipe (12) which forms at least part of the measuring device.
Claim 13
Dependent Claim
31 words
The exhaust gas recirculation valve as claimed in claim 10, wherein an analysis device for the measurement recorded is associated with the actuator (22), as another part of the measuring device.
Claim 14
Dependent Claim
31 words
The exhaust gas recirculation valve as claimed in claim 8, wherein an analysis device for the measurement recorded is associated with the actuator (22), as another part of the measuring device.
Claim 15
Dependent Claim
87 words
The exhaust gas recirculation valve as claimed 12, wherein a second opening (5), diametrically opposite the first opening in the wall of the pipe (1) is provided in the wall of the air flow pipe (1), and the stub pipe (12), together with a closing part (9) positioning the stub pipe (12) and closing the second opening (5) is fed through the first opening (3), the stub pipe (12) being rigidly connected to the casing (21) by means of a connecting part (32) accommodating conduits (34, 35).
Claim 16
Dependent Claim
35 words
The exhaust gas recirculation valve as claimed in claim 13, wherein the connecting part (32) comprises stamped sheet-metal parts joined together, which parts are permanently connected to the stub pipe, and to the casing (21).
Claim 17
Dependent Claim
38 words
The exhaust gas recirculation valve as claimed in claim 14, wherein the closing part (9) forms a recess in a run of the pipe with the stub pipe (12) freely protruding into the pipe (1) through this recess.
Claim 18
Dependent Claim
28 words
The exhaust gas recirculation valve as claimed in claim 14, wherein the cross-sectional contraction (43) on the stub pipe (12) is manufactured by deforming the stub pipe wall.
Claim 19
Dependent Claim
55 words
The exhaust gas recirculation valve as claimed in claim 16, wherein the stub pipe (12) and the closing part (9) are manufactured from thin-walled sheet metal and ar permanently and rigidly connected together by means of a plate (11) which is also used for connecting the stub pipe to the exhaust gas recirculation conduit (14).
Claim 20
Dependent Claim
86 words
The exhaust gas recirculation valve as claimed in claim 12, wherein the measurement recording device includes a cross-sectional contraction (43) which is arranged in the stub pipe (12) upstream of the valve seat (16), respective pressure openings (40, 41) being arranged in a wall of the stub pipe upstream and downstream of the contraction, which pressure openings (40, 41) are connected by respective conduits (34, 35) to a casing of the actuator (22), which casing is connected to the air flow pipe and an analysis device.
Claim 21
Dependent Claim
87 words
The exhaust gas recirculation valve as claimed 18, wherein a second opening (5), diametrically opposite the first opening in the wall of the pipe (1) is provided in the wall of the air flow pipe (1), and the stub pipe (12), together with a closing part (9) positioning the stub pipe (12) and closing the second opening (5) is fed through the first opening (3), the stub pipe (12) being rigidly connected to the casing (21) by means of a connecting part (32) accommodating conduits (34, 35).
Claim 22
Dependent Claim
54 words
The exhaust gas recirculation valve as claimed in claim 18, wherein the pressure openings (40, 41) in the wall of the stub pipe from pipe conduits (34, 35) which are connected to the analysis device by means of the casing (21) of the actuator (22) and the analysis device contains a differential pressure sensor.
Claim 23
Dependent Claim
87 words
The exhaust gas recirculation valve as claimed 20, wherein a second opening (5), diametrically opposite the first opening in the wall of the pipe (1) is provided in the wall of the air flow pipe (1), and the stub pipe (12), together with a closing part (9) positioning the stub pipe (12) and closing the second opening (5) is fed through the first opening (3), the stub pipe (12) being rigidly connected to the casing (21) by means of a connecting part (32) accommodating conduits (34, 35).
Claim 24
Dependent Claim
20 words
The exhaust gas recirculation valve as claimed in claim 20, wherein the analysis device is integrated in the casing (21).
Claim 25
Dependent Claim
87 words
The exhaust gas recirculation valve as claimed 22, wherein a second opening (5), diametrically opposite the first opening in the wall of the pipe (1) is provided in the wall of the air flow pipe (1), and the stub pipe (12), together with a closing part (9) positioning the stub pipe (12) and closing the second opening (5) is fed through the first opening (3), the stub pipe (12) being rigidly connected to the casing (21) by means of a connecting part (32) accommodating conduits (34, 35).
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-03-10 | 2000-09-09 | 2001-03-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-03-10 | 2004-09-09 | 2005-03-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-03-10 | 2008-09-09 | 2009-03-11 | $7700.00 | Window Closed / Lapsed |