US3881459A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Inlet valve for internal combustion engine and method for supplying fuel thereto
Assignee: Individual
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Filing: 1974-02-28
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Granted: 1975-05-06
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Expires: 1994-02-28
Abstract
Abstract An inlet valve means and method for supplying a combustible mixture to the combustion chamber of an internal combustion engine is described. The inlet valve means includes concentrically arranged sections defining a main valve means and an auxiliary valve means. The auxiliary valve means defines a flow passage into the combustion chamber which is inboard of the flow passage defined by said main valve means. During supply of fuel to the combustion chamber the auxiliary valve means and the main valve means are sequentially opened, whereby the supply of fuel is initially constrained to the central portion of said combustion chamber for improved combustion and increased engine efficiency.
Inventors
- 👤 Werner Gaetcke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 00:28
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/28; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86928; Y10T137/86936; Y10T137/86944; Y10T137/86984
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
266 words
In combination with an internal combustion engine having a cylinder defining a variable volume combustion chamber and means defining an inlet passage to deliver a combustible mixture to said combustion chamber, inlet valve means for controlling the flow of said combustible mixture from said inlet passage to said combustion chamber, said inlet valve means comprising: a. means defining an inlet port in said combustion chamber connecting said inlet passage with said combustion chamber, said inlet port having a portion defining a first valve seat; b. main valve means having a main valve head moveable out of and into engagement with said first valve seat to respectively open and close said port to flow therethrough, said main valve head including means defining at least one flow passage therein for permitting the flow of said combustible mixture from said inlet passage therethrough, said main valve head further including means defining a second valve seat surrounding said at least one flow passage; c. auxiliary valve means having an auxiliary valve head Disposed for movement out of and into engagement with said second valve seat for respectively opening and closing said at least one flow passage in said main valve head to flow therethrough; and d. means for sequentially moving said auxiliary valve head out of engagement with said second valve seat and said main valve head out of engagement with said first valve seat to permit the flow of said combustible mixture from said inlet passage to said combustion chamber, first through said at least one flow passage, and second through said inlet port around said main valve head.
Claim 2
Dependent Claim
266 words
In combination with an internal combustion engine having a cylinder defining a variable volume combustion chamber and means defining an inlet passage to deliver a combustible mixture to said combustion chamber, inlet valve means for controlling the flow of said combustible mixture from said inlet passage to said combustion chamber, said inlet valve means comprising: a. means defining an inlet port in said combustion chamber connecting said inlet passage with said combustion chamber, said inlet port having a portion defining a first valve seat; b. main valve means having a main valve head moveable out of and into engagement with said first valve seat to respectively open and close said port to flow therethrough, said main valve head including means defining at least one flow passage therein for permitting the flow of said combustible mixture from said inlet passage therethrough, said main valve head further including means defining a second valve seat surrounding said at least one flow passage; c. auxiliary valve means having an auxiliary valve head Disposed for movement out of and into engagement with said second valve seat for respectively opening and closing said at least one flow passage in said main valve head to flow therethrough; and d. means for sequentially moving said auxiliary valve head out of engagement with said second valve seat and said main valve head out of engagement with said first valve seat to permit the flow of said combustible mixture from said inlet passage to said combustion chamber, first through said at least one flow passage, and second through said inlet port around said main valve head.
Claim 3
Dependent Claim
33 words
The apparatus of claim 1 wherein said main valve head comprises a disk and said at least one flow passage in said valve head is disposed inboard of the edges of said disk.
Claim 4
Dependent Claim
18 words
The apparatus of claim 2 wherein said at least one flow passage comprises a plurality of arcuate slots.
Claim 5
Dependent Claim
66 words
The apparatus of claim 1 wherein said main valve means further includes a main valve stem connected to said main valve head and mounted for reciprocating movement in said inlet port, said main valve stem having a longitudinal bore therein, and said auxiliary valve means further includes an auxiliary valve stem connected to said auxiliary valve head and mounted for reciprocating movement in said longitudinal bore.
Claim 6
Dependent Claim
40 words
The apparatus of claim 4 wherein said main valve head and said auxiliary valve head are dome-shaped and the concave side of said main valve head defines said second valve seat for the convex side of said auxiliary valve head.
Claim 7
Dependent Claim
36 words
The apparatus of claim 4 wherein said main valve stem and said auxiliary valve stem are spring biased to normally hold the respective valve heads out of engagement with said first and second valve seats, respectively.
Claim 8
Dependent Claim
127 words
The apparatus of claim 6 wherein said auxiliary valve stem further includes first collar means rigidly affixed at the opposite end of said auxiliary valve stem from said auxiliary valve head and said main valve stem further includes second collar means rigidly affixed to the opposite end of said main valve head said first and second collar means being spaced in the longitudinal direction of said valve stems and wherein said means for sequentially moving said main and auxiliary valve heads out of engagement with said first and second valve seats, respectively, includes means for driving said first collar means toward said second collar means to open said auxiliary valve means and into engagement with said second collar means to open said main valve means in seriatim.
Claim 9
Dependent Claim
19 words
The apparatus of claim 7 wherein there is further provided spring means between said first and second collar means.
Claim 10
Dependent Claim
22 words
The apparatus of claim 1 wherein said inlet port means is disposed in alignment with a central axis of said combustion chamber.
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) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |