Patent US6000222A successfully refreshed from Google Patents.
US6000222A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbocharger with integral turbine exhaust gas recirculation control valve and exhaust gas bypass valve
Assignee: Honeywell International Inc
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Filing: 1998-12-15
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Granted: 1999-12-14
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Expires: 2018-12-15
Abstract
Abstract A turbocharger is provided with an integral exhaust gas recirculation (EGR) chamber and valve contained within the turbine housing casting in conjunction with a conventional exhaust gas bypass or wastegate system. An exhaust gas back pressure control valve is also provided integral to the exhaust gas outlet for EGR flow control.
Inventors
- 👤 Brian G. Regnier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 09:34
CPC Classifications
F; F01; F01D; F01D9/00; F01D9/02; F01D9/026; F01D17/00; F01D17/10; F01D17/105; F02; F02B; F02B37/00; F02M; F02M26/00; F02M26/02; F02M26/09; F02M26/10; F02M26/13; F02M26/14; F02M26/16; F02M26/51; F02M26/52; F02M26/59; F02M26/61; F02M26/615; F02M26/04; F02M26/05; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
177 words
A turbocharger for internal combustion engines comprising: a turbine housing including: an EGR chamber disposed therein that is separated from an exhaust gas outlet of the housing, wherein the EGR chamber includes an exhaust gas passage that extends from the EGR chamber to a volute within the turbine housing; and an exhaust bypass chamber disposed therein that is separated from the EGR chamber, and that is in exhaust flow communication with an exhaust gas outlet of the housing, wherein the bypass chamber includes a bypass exhaust gas passage that extends from the bypass chamber to a volute within the turbine housing; an EGR control valve disposed within the EGR chamber and positioned over the exhaust gas passage to control the passage of exhaust gas from the volute and out of the turbine housing; an exhaust bypass valve disposed within the bypass chamber and positioned over the bypass exhaust gas passage to control the passage of exhaust gas from the volute and out of the turbine housing; and a flow path for EGR gas from the EGR chamber.
Claim 2
Dependent Claim
177 words
A turbocharger for internal combustion engines comprising: a turbine housing including: an EGR chamber disposed therein that is separated from an exhaust gas outlet of the housing, wherein the EGR chamber includes an exhaust gas passage that extends from the EGR chamber to a volute within the turbine housing; and an exhaust bypass chamber disposed therein that is separated from the EGR chamber, and that is in exhaust flow communication with an exhaust gas outlet of the housing, wherein the bypass chamber includes a bypass exhaust gas passage that extends from the bypass chamber to a volute within the turbine housing; an EGR control valve disposed within the EGR chamber and positioned over the exhaust gas passage to control the passage of exhaust gas from the volute and out of the turbine housing; an exhaust bypass valve disposed within the bypass chamber and positioned over the bypass exhaust gas passage to control the passage of exhaust gas from the volute and out of the turbine housing; and a flow path for EGR gas from the EGR chamber.
Claim 3
Dependent Claim
142 words
A turbocharger as defined in claim 1 further including a turbine elbow casting attached to the turbine housing having: an exhaust gas outlet that extends therethrough and that is positioned adjacent the turbine housing exhaust gas outlet; an exhaust valve disposed within the turbine elbow casting exhaust gas outlet; and wherein the EGR gas flow path comprises: an EGR chamber disposed within the turbine elbow casting and opposite to the turbine housing EGR chamber, wherein the turbine elbow casting EGR chamber is separate from the turbine elbow casting exhaust gas outlet; and an exhaust bypass chamber disposed within the turbine elbow casting and opposite to the turbine housing exhaust bypass chamber, wherein the turbine elbow casting exhaust bypass chamber is separate from the turbine elbow casting EGR chamber and is in exhaust flow communication with the turbine elbow casting exhaust gas outlet.
References Cited (Backward Citations)
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Cited
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US4555904A
Cited
JPH03160147A
Cited
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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) | 2002-12-13 | 2003-06-14 | 2003-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-12-13 | 2007-06-14 | 2007-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-12-13 | 2011-06-14 | 2011-12-14 | $7700.00 | Window Closed / Lapsed |