Patent US4336688A successfully refreshed from Google Patents.
US4336688A
Expired / Lapsed
US
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Turbocharger control system
Assignee: WINDBLOWN SYSTEMS Inc
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Filing: 1979-11-05
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Granted: 1982-06-29
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Expires: 1999-11-05
Abstract
Abstract An improved exhaust driven turbocharger control system using a preselected combination of exhaust and intake manifold pressures to effect a third pressure acting on the wastegate pneumatic control chamber which results in higher boost pressures at lower engine speeds with attenuated boost pressures as engine speeds increase.
Inventors
- 👤 Fred J. Dellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:13
CPC Classifications
F; F02; F02B; F02B37/00; F02B37/12; F02B37/18; F02B37/183; F02B37/186; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
151 words
In an internal combustion engine having an intake manifold, an exhaust manifold and an exhaust driven turbocharger for compressing the intake charge, said turbocharger including a wastegate for limiting the boost pressure to a predetermined value, a pneumatic chamber for controlling said wastegate, the improvement comprising: a first control line coupled for fluid communication between said intake manifold and said pneumatic chamber of said wastegate; a second control line coupled for fluid communication between said exhaust manifold and said pneumatic chamber of said wastegate; said first control line communicating the pressure within said intake manifold to said pneumatic chamber, said second control line communicating the pressure within said exhaust manifold to said pneumatic chamber; said first and second control lines being constructed and arranged so as to be capable of fluid communication with each other to thereby effect a third pressure acting on said pneumatic chamber to thereby control said wastegate.
Claim 2
Dependent Claim
151 words
In an internal combustion engine having an intake manifold, an exhaust manifold and an exhaust driven turbocharger for compressing the intake charge, said turbocharger including a wastegate for limiting the boost pressure to a predetermined value, a pneumatic chamber for controlling said wastegate, the improvement comprising: a first control line coupled for fluid communication between said intake manifold and said pneumatic chamber of said wastegate; a second control line coupled for fluid communication between said exhaust manifold and said pneumatic chamber of said wastegate; said first control line communicating the pressure within said intake manifold to said pneumatic chamber, said second control line communicating the pressure within said exhaust manifold to said pneumatic chamber; said first and second control lines being constructed and arranged so as to be capable of fluid communication with each other to thereby effect a third pressure acting on said pneumatic chamber to thereby control said wastegate.
Claim 3
Dependent Claim
19 words
The combination of claim 1 wherein at least one of said first and second control lines contains orifice means.
Claim 4
Dependent Claim
24 words
The combination of claim 1 wherein said first control line contains check valve means to prevent communication of a vacuum in said intake manifold.
Claim 5
Dependent Claim
20 words
The combination of claim 2 wherein said orifice means includes a selectively replaceable disc having at least one aperture therein.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-06-28 | 1985-12-28 | 1986-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-06-28 | 1989-12-28 | 1990-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-06-28 | 1993-12-28 | 1994-06-29 | $7700.00 | Window Closed / Lapsed |