Patent US4360699A successfully refreshed from Google Patents.
US8434307B2
Active / In Force
US
⏱️ 3.2 years remaining
Exhaust gas system and method for recovering energy
Assignee: Modine Manufacturing Co
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Filing: 2010-02-01
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Granted: 2013-05-07
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Expires: 2030-02-01
Abstract
Abstract A system and method for recovering energy from gases of an internal combustion engine in conjunction with exhaust gas recirculation is described and illustrated, and in some embodiments includes an exhaust gas recirculation valve and an exhaust gas recirculation heat exchanger, with a working medium which undergoes a cyclic process being evaporated in the exhaust gas recirculation heat exchanger by hot exhaust gases, and with resulting steam being converted into mechanical or electrical energy which is available as additional energy. To improve heat recovery with little technical expenditure, an exhaust gas control valve can interact with the exhaust gas recirculation heat exchanger, and can control the mass flow of exhaust gases flowing through the exhaust gas recirculation heat exchanger constantly in all operating phases of the internal combustion engine, approximately in the vicinity of the performance limit of energy recovery.
Inventors
- 👤 Peter Ambros
- 👤 Stefan Hildinger
- 👤 Jochen Orso
- 👤 Klaus Tüber
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:12
CPC Classifications
F; F02; F02B; F02B29/00; F02B29/04; F02B29/0406; F02B29/0437; F02B29/0443; F02B29/0418; F02B29/045; F02B29/0475; F02M; F02M26/00; F02M26/02; F02M26/04; F02M26/05; F02M26/13; F02M26/22; F02M26/23; F02M26/39; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
180 words
A system for recovering energy from gases of an internal combustion engine having exhaust gas recirculation, the system comprising: an exhaust gas recirculation valve; an exhaust gas recirculation heat exchanger configured to receive hot exhaust gases from the internal combustion engine and connected to the exhaust gas recirculation valve, the exhaust gas recirculation heat exchanger operable to evaporate a working medium and to produce steam by heat transfer with the hot exhaust gases; a condenser connected to the exhaust gas recirculation heat exchanger to receive the working medium; and an exhaust gas control valve interacting with the exhaust gas recirculation heat exchanger to control a mass flow of exhaust gases from the internal combustion engine that flows through the exhaust gas recirculation heat exchanger, and to provide exhaust gases flowing constantly through the exhaust gas recirculation heat exchanger during all operating phases of the internal combustion engine; wherein the exhaust gas control valve is coupled to the condenser to receive signals from the condenser relating to at least one of temperature and pressure of the working medium leaving the condenser.
Claim 2
Independent Claim
180 words
A system for recovering energy from gases of an internal combustion engine having exhaust gas recirculation, the system comprising: an exhaust gas recirculation valve; an exhaust gas recirculation heat exchanger configured to receive hot exhaust gases from the internal combustion engine and connected to the exhaust gas recirculation valve, the exhaust gas recirculation heat exchanger operable to evaporate a working medium and to produce steam by heat transfer with the hot exhaust gases; a condenser connected to the exhaust gas recirculation heat exchanger to receive the working medium; and an exhaust gas control valve interacting with the exhaust gas recirculation heat exchanger to control a mass flow of exhaust gases from the internal combustion engine that flows through the exhaust gas recirculation heat exchanger, and to provide exhaust gases flowing constantly through the exhaust gas recirculation heat exchanger during all operating phases of the internal combustion engine; wherein the exhaust gas control valve is coupled to the condenser to receive signals from the condenser relating to at least one of temperature and pressure of the working medium leaving the condenser.
Claim 3
Dependent Claim
32 words
The system of claim 1 , wherein the exhaust gas control valve is located upstream of the exhaust gas recirculation valve with respect to flow direction of exhaust gases in the system.
Claim 4
Dependent Claim
47 words
The system of claim 2 , wherein the exhaust gas control valve controls the mass flow of exhaust gases upstream of the exhaust gas recirculation heat exchanger, and wherein the exhaust gas recirculation valve controls recirculated exhaust gas flow downstream of the exhaust gas recirculation heat exchanger.
Claim 5
Dependent Claim
46 words
The system of claim 3 , wherein non-recirculated exhaust gas is fed downstream of the exhaust gas heat exchanger and to exhaust gas flow via a branch line at a location that is at least one of upstream and downstream of a first exhaust gas turbine.
Claim 6
Dependent Claim
49 words
The system of claim 3 , wherein a portion of the entire exhaust gas flow from the internal combustion engine is conducted through the exhaust gas heat exchanger, and wherein the portion is greater than another portion of the entire exhaust gas flow recirculated to the internal combustion engine.
Claim 7
Dependent Claim
30 words
The system of claim 2 , wherein both recirculated exhaust gas flow and exhaust gas flow serving for energy recovery are controlled downstream of the exhaust gas recirculation heat exchanger.
Claim 8
Dependent Claim
46 words
The system of claim 6 , wherein non-recirculated exhaust gas is fed downstream of the exhaust gas heat exchanger and to exhaust gas flow via a branch line at a location that is at least one of upstream and downstream of a first exhaust gas turbine.
Claim 9
Dependent Claim
49 words
The system of claim 6 , wherein a portion of the entire exhaust gas flow from the internal combustion engine is conducted through the exhaust gas heat exchanger, and wherein the portion is greater than another portion of the entire exhaust gas flow recirculated to the internal combustion engine.
Claim 10
Dependent Claim
46 words
The system of claim 2 , wherein non-recirculated exhaust gas is fed downstream of the exhaust gas heat exchanger and to exhaust gas flow via a branch line at a location that is at least one of upstream and downstream of a first exhaust gas turbine.
Claim 11
Dependent Claim
49 words
The system of claim 9 , wherein a portion of the entire exhaust gas flow from the internal combustion engine is conducted through the exhaust gas heat exchanger, and wherein the portion is greater than another portion of the entire exhaust gas flow recirculated to the internal combustion engine.
Claim 12
Dependent Claim
49 words
The system of claim 2 , wherein a portion of the entire exhaust gas flow from the internal combustion engine is conducted through the exhaust gas heat exchanger, and wherein the portion is greater than another portion of the entire exhaust gas flow recirculated to the internal combustion engine.
Claim 13
Dependent Claim
47 words
The system of claim 1 , wherein the exhaust gas control valve controls the mass flow of exhaust gases upstream of the exhaust gas recirculation heat exchanger, and wherein the exhaust gas recirculation valve controls recirculated exhaust gas flow downstream of the exhaust gas recirculation heat exchanger.
Claim 14
Dependent Claim
46 words
The system of claim 12 , wherein non-recirculated exhaust gas is fed downstream of the exhaust gas heat exchanger and to exhaust gas flow via a branch line at a location that is at least one of upstream and downstream of a first exhaust gas turbine.
Claim 15
Dependent Claim
49 words
The system of claim 12 , wherein a portion of the entire exhaust gas flow from the internal combustion engine is conducted through the exhaust gas heat exchanger, and wherein the portion is greater than another portion of the entire exhaust gas flow recirculated to the internal combustion engine.
Claim 16
Dependent Claim
30 words
The system of claim 1 , wherein both recirculated exhaust gas flow and exhaust gas flow serving for energy recovery are controlled downstream of the exhaust gas recirculation heat exchanger.
Claim 17
Dependent Claim
46 words
The system of claim 15 , wherein non-recirculated exhaust gas is fed downstream of the exhaust gas heat exchanger and to exhaust gas flow via a branch line at a location that is at least one of upstream and downstream of a first exhaust gas turbine.
Claim 18
Dependent Claim
49 words
The system of claim 15 , wherein a portion of the entire exhaust gas flow from the internal combustion engine is conducted through the exhaust gas heat exchanger, and wherein the portion is greater than another portion of the entire exhaust gas flow recirculated to the internal combustion engine.
Claim 19
Dependent Claim
46 words
The system of claim 1 , wherein non-recirculated exhaust gas is fed downstream of the exhaust gas heat exchanger and to exhaust gas flow via a branch line at a location that is at least one of upstream and downstream of a first exhaust gas turbine.
Claim 20
Dependent Claim
49 words
The system of claim 18 , wherein a portion of the entire exhaust gas flow from the internal combustion engine is conducted through the exhaust gas heat exchanger, and wherein the portion is greater than another portion of the entire exhaust gas flow recirculated to the internal combustion engine.
Claim 21
Dependent Claim
49 words
The system of claim 1 , wherein a portion of the entire exhaust gas flow from the internal combustion engine is conducted through the exhaust gas heat exchanger, and wherein the portion is greater than another portion of the entire exhaust gas flow recirculated to the internal combustion engine.
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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) | 2016-05-06 | 2016-11-05 | 2017-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2020-05-06 | 2020-11-05 | 2021-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2024-05-06 | 2024-11-05 | 2025-05-07 | $7700.00 | Window Closed / Lapsed |