US4665689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust system for the combustion gases of an internal combustion engine
Assignee: Individual
•
Filing: 1985-11-05
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Granted: 1987-05-19
•
Expires: 2005-11-05
Abstract
Abstract An exhaust system for the combustion gases of an internal combustion engine is provided comprising a pressure sensor detecting the increase of the back pressure of the gases inside an exhaust manifold of an internal combustion engine, which back pressure results from the clogging up of a first flameproof stack, or any other device of this type, for discharging the gases. The pressure sensor communicates with the exhaust manifold through a second flame proof stack placed outside the discharge path of the combustion gases.
Inventors
- 👤 Armand Rognon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:34
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/06; F01N3/02; F01N3/021; F01N3/04; F01N3/043; F01N2550/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
92 words
An exhaust system for the combustion gases of an internal combustion engine, comprising an exhaust manifold, means for discharging said gases, connected to said manifold and likely to clog up, and a pressure sensor communicating with said manifold, wherein said discharge means are flameproof and comprise first means for arresting the particles contained in said gases and comprising means for placing said pressure sensor in communication with said manifold, said communication means comprising second means for arresting the incandescent particles contained in said gases, disposed outside the discharge means of said gases.
Claim 2
Dependent Claim
92 words
An exhaust system for the combustion gases of an internal combustion engine, comprising an exhaust manifold, means for discharging said gases, connected to said manifold and likely to clog up, and a pressure sensor communicating with said manifold, wherein said discharge means are flameproof and comprise first means for arresting the particles contained in said gases and comprising means for placing said pressure sensor in communication with said manifold, said communication means comprising second means for arresting the incandescent particles contained in said gases, disposed outside the discharge means of said gases.
Claim 3
Dependent Claim
24 words
The system as claimed in claim 1, wherein means are provided for cooling said means placing said pressure sensor in communication with said manifold.
Claim 4
Dependent Claim
15 words
The system as claimed in claim 2, wherein said cooling means are fluid flow means.
Claim 5
Independent Claim
42 words
The system as claimed in one of claims 2 and 3, wherein said pressure sensor is sensitive in a predetermined temperature range and a temperature sensor is provided for measuring the temperature of said gases in the vicinity of said pressure sensor.
Claim 6
Dependent Claim
31 words
The system as claimed in claim 1, wherein an electronic control system is provided, said pressure sensor being a sensor delivering an electric output signals connected to said electronic control system.
Claim 7
Dependent Claim
33 words
The system as claimed in claim 4, wherein an electronic control system is provided, said pressure sensor and said temperature sensor being sensors delivering electric output signals connected to said electronic control system.
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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) | 1990-05-18 | 1990-11-17 | 1991-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-05-18 | 1994-11-17 | 1995-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-05-18 | 1998-11-17 | 1999-05-19 | $7700.00 | Window Closed / Lapsed |