US3799140A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cylinder arrangement for combustion engines having a pre-combustion or ante-chamber and a combustion chamber
Assignee: Volkswagen AG
•
Filing: 1971-07-12
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Granted: 1974-03-26
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Expires: 1991-07-12
Abstract
Abstract A cylinder arrangement for combustion engines in motor vehicles with external ignition comprising a cylinder having a piston mounted therein for movement, a combustion chamber and a precombustion or ante-chamber in communication with each other, a valve means opening into the pre-combustion chamber for injecting the fuel mixture thereinto and a spark-plug having electrodes for the ignition of such mixture, the combustion chamber having an extension adjacent the pre-combustion chamber, with such extension having a saw-tooth-like cross section wth a steep side and a flat side, the pre-combustion chamber communicating with the combustion chamber adjacent the steep side of the saw-toothlike extension chamber, the flat side of the extension chamber going over to the pre-combustion chamber in a tangential fashion.
Inventors
- 👤 G Vogelsang
- 👤 I Geiger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 00:36
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/10; F02B19/1004; F02B19/1019; F02B19/108; F02B19/16; F02B1/00; F02B1/02; F02B1/04; F02F; F02F1/00; F02F1/24; F02F2001/241; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
163 words
A cylinder arrangement for combustion engines with external ignition, comprising in combination cylinder means including a combustion chamber, a piston mounted for movement in said combustion chamber to define a maximum space and, respectively, a minimum space between its face and a working wall of said combustion chamber, an extension chamber of a saw-tooth-like configuration having a base side communicating with a portion of said working wall, a flat side sloping upwardly from a peripheral region towards the central region of said working wall, and a steep side adjacent the remaining portion of said working wall, a precombustion chamber including fuel injecting means and spark producing means and located in the region of said remaining portion of the working wall, a short passage between said precombustion chamber and said steep side of said extension chamber, said flat side being substantially flush with a wall portion of said short passage and being directed substantially tangentially to an inner wall portion of said precombustion chamber.
Claim 2
Dependent Claim
163 words
A cylinder arrangement for combustion engines with external ignition, comprising in combination cylinder means including a combustion chamber, a piston mounted for movement in said combustion chamber to define a maximum space and, respectively, a minimum space between its face and a working wall of said combustion chamber, an extension chamber of a saw-tooth-like configuration having a base side communicating with a portion of said working wall, a flat side sloping upwardly from a peripheral region towards the central region of said working wall, and a steep side adjacent the remaining portion of said working wall, a precombustion chamber including fuel injecting means and spark producing means and located in the region of said remaining portion of the working wall, a short passage between said precombustion chamber and said steep side of said extension chamber, said flat side being substantially flush with a wall portion of said short passage and being directed substantially tangentially to an inner wall portion of said precombustion chamber.
Claim 3
Dependent Claim
50 words
The cylinder arrangement as claimed in claim 1, wherein said piston means is a displacement-type piston and on its upper surface adjacent the said extension chamber has a projection formed thereon shaped to protrude into said extension chamber when said piston means is in its upper dead point of displacement.
Claim 4
Dependent Claim
30 words
The cylinder arrangement as claimed in claim 2, wherein said projection at the upper dead point of said piston forms a gap with the wall portions of said extension chamber.
Claim 5
Dependent Claim
37 words
The cylinder arrangement as claimed in claim 3, wherein said gap is wider than a gap formed between the remaining wall portions of said combustion chamber and between the upper surface of said piston adjacent said projection.
Claim 6
Dependent Claim
56 words
In a combustion engine with external ignition, a cylinder arrangement as claimed in claim 10 further comprising valve means opening into said pre-combustion chamber for injecting a fuel thereinto and said spark producing means being located in said pre-combustion chamber comprising a spark-plug having electrodes for the ignition of the resulting mixture in said pre-combustion chamber.
Claim 7
Dependent Claim
49 words
The combination as claimed in claim 5, wherein said piston means is a displacement-type piston and on its upper surface adjacent the said extension chamber has a projection formed thereon shaped to protrude into said extension chamber when said piston means is in its upper dead point of displacement.
Claim 8
Dependent Claim
29 words
The combination as claimed in claim 6, wherein said projection at the upper dead point of said piston forms a gap with the wall portions of said extension chamber.
Claim 9
Dependent Claim
36 words
The combination as claimed in claim 7, wherein said gap is wider than a gap formed between the remaining wall portions of said combustion chamber and between the upper surface of said piston adjacent said projection.
Claim 10
Dependent Claim
15 words
The combination as claimed in claim 5, wherein said piston means is a rotary-type piston.
Claim 11
Dependent Claim
30 words
A cylinder arrangement according to claim 1 further including a channel connecting said precombustion chamber with said remaining portion of the working wall to facilitate cleansing of said precombustion chamber.
Claim 12
Dependent Claim
16 words
A cylinder arrangement as claimed in claim 1, wherein said piston means is a rotary-type piston.
Claim 13
Dependent Claim
41 words
In a combination engine with external ignition, as claimed in claim 5, further including a scavaging passage defined in said remaining portion of the working wall connecting said pre-combustion chamber with said combustion chamber to facilitatE cleansing of said pre-combustion chamber.
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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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |