US3576102A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Turbocharger system
Assignee: Deutz Allis Corp
•
Filing: 1969-05-08
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Granted: 1971-04-27
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Expires: 1989-05-08
Abstract
Abstract A turbocharger system having two stage turbocharging with an exhaust gas bypass to partially bypass the first stage turbocharger when the engine is operating at high load high speed conditions.
Inventors
- 👤 Floyd G West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 03:35
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B37/18; F02B37/183; F02B37/004; F02B37/013; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
132 words
A two stage turbocharger system for use on the exhaust system of an internal combustion engine comprising: an exhaust manifold, a high-pressure stage turbocharger including a high-pressure turbine connected to and receiving exhaust gas from the exhaust manifold of an internal combustion engine, a low pressure stage turbocharger including a low-pressure turbine connected to the discharge side of the high-pressure turbine and receiving discharge exhaust gas, a bypass exhaust duct connected to said exhaust manifold and the discharge side of said high-pressure turbine for connection in parallel to said high-pressure turbine, a bypass exhaust valve in said duct for bypassing a portion of the exhaust gas around said high-pressure turbine to thereby increase the energy in the exhaust gas supplied to the low pressure turbine and provide greater supercharging of said engine.
Claim 2
Dependent Claim
132 words
A two stage turbocharger system for use on the exhaust system of an internal combustion engine comprising: an exhaust manifold, a high-pressure stage turbocharger including a high-pressure turbine connected to and receiving exhaust gas from the exhaust manifold of an internal combustion engine, a low pressure stage turbocharger including a low-pressure turbine connected to the discharge side of the high-pressure turbine and receiving discharge exhaust gas, a bypass exhaust duct connected to said exhaust manifold and the discharge side of said high-pressure turbine for connection in parallel to said high-pressure turbine, a bypass exhaust valve in said duct for bypassing a portion of the exhaust gas around said high-pressure turbine to thereby increase the energy in the exhaust gas supplied to the low pressure turbine and provide greater supercharging of said engine.
Claim 3
Dependent Claim
35 words
A two stage turbocharger system as set forth in claim 1 wherein said high-pressure stage includes said high-pressure turbine driving a high-pressure compressor and said low-pressure stage includes a low-pressure turbine driving a low-pressure compressor.
Claim 4
Dependent Claim
43 words
A two stage turbocharger system as set forth in claim 1 wherein the bypass exhaust valve in said duct connected between the inlet and discharge ends of said high pressure turbine operates in response to the pressure differential across said high pressure turbine.
Claim 5
Dependent Claim
48 words
A two stage turbocharging system as set forth in claim 1 wherein said bypass exhaust valve includes a valve actuator having an element operating in response to the pressure differential between the exhaust manifold and atmospheric pressure to thereby control the opening and closing of said bypass valve.
Claim 6
Dependent Claim
25 words
A two stage turbocharger system as set forth in claim 2 including an intercooler connected intermediate the low and high-pressure compressors of the turbocharger stages.
Claim 7
Dependent Claim
48 words
A two stage turbocharger system as set forth in claim 1 wherein said exhaust valve includes a valve actuator having a power wall and housing defining a high- and low-pressure chamber whereby the power wall is subject to a differential in pressure to operate said exhausT bypass valve.
Claim 8
Dependent Claim
26 words
A two stage turbocharger system as set forth in claim 1 including said bypass exhaust valve, resilient means normally biased said valve to a closed position.
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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) | 1974-04-26 | 1974-10-26 | 1975-04-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-04-26 | 1978-10-26 | 1979-04-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-04-26 | 1982-10-26 | 1983-04-27 | $7700.00 | Window Closed / Lapsed |