US3814065A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustion engine with additional air inlet valve
Assignee: Volkswagen AG
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Filing: 1970-11-27
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Granted: 1974-06-04
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Expires: 1990-11-27
Abstract
Abstract A combustion engine comprising at least one cylinder and an associated piston defining a combustion chamber, an inlet valve for the entry of the fuel mixture into the combustion chamber, an outlet valve for the outlet of the exhaust gases from the combustion chamber, a cam arrangement for operating the inlet and outlet valves, an additional air inlet valve provided for the combustion chamber and an additional cam associated with the controlling arrangement for controlling the opening and closing of the additional air inlet valve so that a predetermined quantity of pressurized air from an associated pressurized air producer is let into the combustion chamber during a time period falling between the firing time and the end of the power stroke of the piston.
Inventors
- 👤 R Gospodar
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 18:17
CPC Classifications
F; F02; F02B; F02B47/00; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
143 words
A combustion engine comprising at least one cylinder and an associated piston means defining a combustion chamber, inlet valve means for the entry of the fuel-air mixture into said combustion chamber at an air number between 0.8 and 0.85, outlet valve means for the outlet of the exhaust gases from said combustion chamber, a control arrangement for operating said inlet and outlet valve means, the improvement consisting of an additional air-inlet valve means provided for said combustion chamber and means associated with said controlling arrangement for controlling the opening and closing of said additional airinlet means so that a quantity of pressurized air from an associated pressurized air means is let into said combustion chamber during a time period in the neighborhood of the firing time with a pressure higher than the combustion pressure occurring at the instant of adding the pressurized air.
Claim 2
Dependent Claim
143 words
A combustion engine comprising at least one cylinder and an associated piston means defining a combustion chamber, inlet valve means for the entry of the fuel-air mixture into said combustion chamber at an air number between 0.8 and 0.85, outlet valve means for the outlet of the exhaust gases from said combustion chamber, a control arrangement for operating said inlet and outlet valve means, the improvement consisting of an additional air-inlet valve means provided for said combustion chamber and means associated with said controlling arrangement for controlling the opening and closing of said additional airinlet means so that a quantity of pressurized air from an associated pressurized air means is let into said combustion chamber during a time period in the neighborhood of the firing time with a pressure higher than the combustion pressure occurring at the instant of adding the pressurized air.
Claim 3
Dependent Claim
46 words
The combustion engine as claimed in claim 1, wherein said control arrangement comprises a common shaft means and a plurality of camming means provided thereon and associated with each of said valve means for affecting opening and closing of said valve means at predetermined time instants.
Claim 4
Dependent Claim
20 words
The combustion engine as claimed in claim 1, wherein said additional air-inlet means is connected with a pressurized air container.
Claim 5
Dependent Claim
23 words
The combustion engine as claimed in claim 1, wherein said additional air is blown into said combustion chamber continuously during said time period.
References Cited (Backward Citations)
US2383565A
Cited
US3019777A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-06-03 | 1977-12-03 | 1978-06-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-03 | 1981-12-03 | 1982-06-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-03 | 1985-12-03 | 1986-06-04 | $7700.00 | Window Closed / Lapsed |