Patent US8789370B2 successfully refreshed from Google Patents.
US8789370B2
Active / In Force
US
⏱️ 3.6 years remaining
Device for supporting a supercharging device
Assignee: Robert Bosch GmbH
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Filing: 2010-06-22
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Granted: 2014-07-29
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Expires: 2030-06-22
Abstract
Abstract A device for utilizing the waste heat of an internal combustion includes a single-stage or multi-stage supercharging device, which is designed as an exhaust-gas turbocharger in particular. The single-stage or multi-stage supercharging device is assigned an additional supercharging device including an expansion machine acted upon by an auxiliary circuit, in particular a steam circuit.
Inventors
- 👤 Juergen Stegmaier
- 👤 Martin Cichon
- 👤 Manfred Schmitt
- 👤 Bernd Banzhaf
- 👤 Achim Schmidt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:21
CPC Classifications
F02M25/0707; F; F02; F02B; F02B37/00; F02B37/013; F01; F01K; F01K23/00; F01K23/02; F01K23/06; F01K23/065; F01N; F01N5/00; F01N5/02; F02G; F02G5/00; F02G5/02; F02M; F02M26/00; F02M26/02; F02M26/04; F02M26/05; F02M37/00; F02M37/04; F02M37/18; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12; Y02T10/144; Y02T10/16
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
90 words
A device for utilizing the waste heat of an internal combustion engine, comprising: a single-stage or multi-stage supercharging device; and an additional supercharging device including an expansion machine acted upon by an auxiliary circuit, the additional supercharging device being connected to the single-stage or multi-stage supercharging device; wherein an exhaust-gas recirculation system downstream from a branch point is assigned a first heat exchanger, which removes heat from exhaust gas of the internal combustion engine and adds the heat to steam of the auxiliary circuit upstream from the additional supercharging device.
Claim 2
Independent Claim
90 words
A device for utilizing the waste heat of an internal combustion engine, comprising: a single-stage or multi-stage supercharging device; and an additional supercharging device including an expansion machine acted upon by an auxiliary circuit, the additional supercharging device being connected to the single-stage or multi-stage supercharging device; wherein an exhaust-gas recirculation system downstream from a branch point is assigned a first heat exchanger, which removes heat from exhaust gas of the internal combustion engine and adds the heat to steam of the auxiliary circuit upstream from the additional supercharging device.
Claim 3
Dependent Claim
18 words
The device according to claim 1 , wherein the single-stage or multi-stage supercharging device is an exhaust-gas turbocharger.
Claim 4
Dependent Claim
15 words
The device according to claim 1 , wherein the auxiliary circuit is a steam circuit.
Claim 5
Dependent Claim
38 words
The device according to claim 1 , wherein the additional supercharging device is a turbocharger whose compressor part is connected in parallel or in series to at least one compressor part of the single-stage or multi-stage supercharging device.
Claim 6
Dependent Claim
47 words
The device according to claim 4 , wherein the compressor part of the turbocharger is connected in parallel or in series to a high-pressure compressor part of a high-pressure stage of the multi-stage supercharging device; wherein the multi-stage supercharging device is defined as a two-stage supercharging device.
Claim 7
Dependent Claim
33 words
The device according to claim 1 , wherein the single-stage or multi-stage supercharging device includes a waste gate for influencing an exhaust-gas back pressure on an outlet side of the internal combustion engine.
Claim 8
Dependent Claim
23 words
The device according to claim 1 , wherein an exhaust-gas recirculation system is assigned to the internal combustion engine on an outlet side.
Claim 9
Dependent Claim
37 words
The device according to claim 1 , wherein the auxiliary circuit is assigned a second heat exchanger, which adds heat from recirculated exhaust gas to steam of the auxiliary circuit after flowing through the first heat exchanger.
Claim 10
Dependent Claim
34 words
The device according to claim 1 , wherein recirculated exhaust gas is fed via a first additional exhaust-gas recirculation line into an air path upstream from a compressor part of the additional supercharging device.
Claim 11
Dependent Claim
20 words
The device according to claim 9 , wherein a metering valve is situated in the first additional exhaust-gas recirculation line.
Claim 12
Dependent Claim
42 words
The device according to claim 9 , wherein a check valve is installed upstream or downstream from the compressor part of the additional supercharging device or upstream or downstream from at least one compressor part of the single-stage or multi-stage supercharging device.
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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) | 2017-07-28 | 2018-01-27 | 2018-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2021-07-28 | 2022-01-27 | 2022-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2025-07-28 | 2026-01-27 | 2026-07-29 | $7700.00 | Window Closed / Lapsed |