EP0302045B1
Expired / Lapsed
EP
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Two-stroke engine
Assignee: AVL List GmbH
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Filing: 1988-07-11
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Granted: 1992-03-04
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Expires: 2008-07-11
Abstract
No abstract record available.
Inventors
- 👤 Diethard Dipl.-Ing. Plohberger
- 👤 Leopold Dr. Mikulic
- 👤 Klaus Dr. Landfahrer
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 02:28
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/04; F02M69/042; F02M69/045; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
194 words
Two-stroke internal combustion engine with crankcase scavaging with a transfer passage (2) of which the transfer port (12) in the cylinder (1) is controlled by the piston (4) of which the crown (8) is made smooth and rotationally symmetrical, and with a fuel injection nozzle (5) lying opposite the exhaust port (13), the injection stream (7) from the nozzle (5) being directed at that face (8) of the piston crown (4) which is towards the combustion chamber (1), the axis (7') of the injected stream (7) making an included angle (a) with the axis (10) of the piston which is less than 90°, characterised in that the injected stream (7) from the nozzle (5) is directed at least predominantly towards that half of the piston crown which lies opposite the exhaust port (13), that the injection nozzle (5) is arranged in the transfer passage (2) and that in the upper ranges of engine speeds and loads the start of the injection is timed to occur before the transfer port (12) from the transfer passage (2) is uncovered by the piston (4), so that part of the fuel can pre-vaporise in the transfer passage (2).
Claim 2
Dependent Claim
194 words
Two-stroke internal combustion engine with crankcase scavaging with a transfer passage (2) of which the transfer port (12) in the cylinder (1) is controlled by the piston (4) of which the crown (8) is made smooth and rotationally symmetrical, and with a fuel injection nozzle (5) lying opposite the exhaust port (13), the injection stream (7) from the nozzle (5) being directed at that face (8) of the piston crown (4) which is towards the combustion chamber (1), the axis (7') of the injected stream (7) making an included angle (a) with the axis (10) of the piston which is less than 90°, characterised in that the injected stream (7) from the nozzle (5) is directed at least predominantly towards that half of the piston crown which lies opposite the exhaust port (13), that the injection nozzle (5) is arranged in the transfer passage (2) and that in the upper ranges of engine speeds and loads the start of the injection is timed to occur before the transfer port (12) from the transfer passage (2) is uncovered by the piston (4), so that part of the fuel can pre-vaporise in the transfer passage (2).
Claim 3
Dependent Claim
27 words
Two-stroke internal combustion engine according to claim 1 characterised in that the injection nozzle is in the form of a multi-holed nozzle, preferably a two-stream nozzle (5').
Claim 4
Dependent Claim
33 words
Two-stroke internal combustion engine according to claim 1 or 2 characterised in that further injection nozzles (5) are provided in additional transfer passages (2') arranged at the periphery of the cylinder wall (9).
Claim 5
Dependent Claim
49 words
Two-stroke internal combustion engine according to claim 2 or 3 characterised in that each axis (7') of the injected streams (7), looking at the piston (4) in plan view, is directed substantially towards one of the additional transfer passages (2') arranged at the periphery of the cylinder wall (9).
References Cited (Backward Citations)
No citation records indexed.
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