US3759040A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for better exploitation of the exhaust energy from an internal combustion engine
Assignee: Individual
•
Filing: 1971-10-01
•
Granted: 1973-09-18
•
Expires: 1991-10-01
Abstract
Abstract A device for better exploitation of the exhaust gas energy from an internal combustion engine equipped with poppet valves, in particular for an exhaust gas driven compressor. Subsequent to a narrow continuation succeeding the sealing point of the valve seat an annular opening is provided, to which air is supplied at atmospheric pressure or under appropriate pressure, said opening as well as the upper surface of the valve and the inner surface of the valve seat being shaped so that here is formed an ejector, in which the exhaust gases flowing at high speed pick up air that has been supplied to the opening.
Inventors
- 👤 O Peltomaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 07:12
CPC Classifications
F; F01; F01N; F01N3/00; F01N3/08; F01N3/10; F01N3/24; F01N3/30; F01N3/34; F02; F02B; F02B37/00; F02B37/12; F02B37/16; F02B37/168; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
205 words
In an internal combustion engine, a device for facilitating utilization of the exhaust gas energy, comprising means defining an exhaust passage, a poppet exhaust valve mounted in said exhaust passage, said exhaust valve having a seating surface, a valve seating member at the inlet of said exhaust passage, said seating member having a seating surface cooperable with said seating surface on said poppet valve to prevent flow of exhaust gases into said exhaust passage, said poppet valve and said seating member each having an annular surface, said annular surface on said poppet valve being disposed opposite said annular surface on said valve seating member, said two annular surfaces being inclined at different angles relative to the axis of said poppet valve for providing a gradually widening annular gap between said poppet valve and said valve seating member, a gas inlet passage means located outside of said exhaust passage and having an inlet opening which opens into said exhaust passage at said widening annular gap, whereby exhaust gases flowing through said widening gap between said poppet valve and valve seating member act in the manner of an ejector to draw in gases from said inlet opening of said gas inlet passage means into said exhaust passage.
Claim 2
Dependent Claim
205 words
In an internal combustion engine, a device for facilitating utilization of the exhaust gas energy, comprising means defining an exhaust passage, a poppet exhaust valve mounted in said exhaust passage, said exhaust valve having a seating surface, a valve seating member at the inlet of said exhaust passage, said seating member having a seating surface cooperable with said seating surface on said poppet valve to prevent flow of exhaust gases into said exhaust passage, said poppet valve and said seating member each having an annular surface, said annular surface on said poppet valve being disposed opposite said annular surface on said valve seating member, said two annular surfaces being inclined at different angles relative to the axis of said poppet valve for providing a gradually widening annular gap between said poppet valve and said valve seating member, a gas inlet passage means located outside of said exhaust passage and having an inlet opening which opens into said exhaust passage at said widening annular gap, whereby exhaust gases flowing through said widening gap between said poppet valve and valve seating member act in the manner of an ejector to draw in gases from said inlet opening of said gas inlet passage means into said exhaust passage.
Claim 3
Dependent Claim
46 words
In an internal combustion engine according to claim 1, wherein said annular surface on said poppet valve is contiguous to said seating surface on said poppet valve, said annular surface on said valve seating member being contiguous to said seating surface on said valve seating member.
Claim 4
Dependent Claim
18 words
In an internal combustion engine according to claim 2, wherein said two annular surfaces define a Laval nozzle.
Claim 5
Dependent Claim
44 words
In an internal combustion engine according to claim 2, wherein said two annular surfaces are frusto-conical surfaces with the cone angle of the frusto-conical surface on said poppet valve being greater than the cone angle of the frusto-conical surface on said valve seating member.
Claim 6
Dependent Claim
28 words
In an internal combustion engine according to claim 2, wherein said inlet opening is located at the widest part of said widening gap between said two annular surfaces.
Claim 7
Dependent Claim
50 words
In an internal combustion engine according to claim 3, wherein said exhaust gases pass over said inlet opening into an annular passage between said poppet valve and the inner wall of said exhaust passage, said annular passage having a greater transverse width than the transverse width of said inlet opening.
References Cited (Backward Citations)
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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) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |