Patent US4018196A successfully refreshed from Google Patents.
US4018196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Internal combustion engine
Assignee: Robert Bosch GmbH
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Filing: 1975-11-05
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Granted: 1977-04-19
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Expires: 1995-11-05
Abstract
Abstract A multicylinder, stratified charge, internal combustion engine in which the main combustion chamber of each cylinder is coupled, through a conduit with controllable flow cross section, to the precombustion chamber of the cylinder which precedes it in the firing order of the engine. A flutter valve controls the flow of gases into each precombustion chamber. Part of the fuel injected just ahead of the main engine inlet valve in the induction tube of each cylinder is thereby drawn off and delivered to the precombustion chamber of the preceding cylinder in the firing order of the engine.
Inventors
- 👤 Ernst Linder
- 👤 Hubert Dettling
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 18:51
CPC Classifications
F; F02; F02B; F02B19/00; F02B19/10; F02B19/1019; F02B19/1023; F02B19/1028; F02B19/1033; F02B2275/00; F02B2275/14; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/12
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
111 words
An internal combustion engine including a plurality of cylinders each of which has an induction tube region and an engine inlet valve located therein, and each of which defines a main combustion chamber and a precombustion chamber, said precombustion chamber including ignition means and a secondary inlet valve, the improvement comprising: A. a conduit leading from the induction tube region of one cylinder to the precombustion chamber of another cylinder immediately preceding said one cylinder in the firing order of the engine; whereby a portion of the fuel delivered to the induction tube region of said one cylinder is aspirated by said other cylinder and transported into the precombustion chamber thereof.
Claim 2
Dependent Claim
111 words
An internal combustion engine including a plurality of cylinders each of which has an induction tube region and an engine inlet valve located therein, and each of which defines a main combustion chamber and a precombustion chamber, said precombustion chamber including ignition means and a secondary inlet valve, the improvement comprising: A. a conduit leading from the induction tube region of one cylinder to the precombustion chamber of another cylinder immediately preceding said one cylinder in the firing order of the engine; whereby a portion of the fuel delivered to the induction tube region of said one cylinder is aspirated by said other cylinder and transported into the precombustion chamber thereof.
Claim 3
Dependent Claim
18 words
An internal combustion engine as claimed in claim 1, wherein said conduit includes flow cross section control means.
Claim 4
Dependent Claim
38 words
An internal combustion engine as claimed in claim 1, wherein said secondary inlet valve is a flutter valve with a plate-like movable valve closure member, said flutter valve being actuated by the pressure prevailing in said precombustion chamber.
Claim 5
Dependent Claim
37 words
An internal combustion engine as claimed in claim 1, the improvement further comprising a fuel injection nozzle, located in each of said induction tube regions, for injecting fuel into said region upstream of said engine inlet valve.
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) | 1980-04-18 | 1980-10-18 | 1981-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-04-18 | 1984-10-18 | 1985-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-04-18 | 1988-10-18 | 1989-04-19 | $7700.00 | Window Closed / Lapsed |