EP 0400338 A2 19901205 - Device for varying the direction in which fuel flows into an engine cylinder, in particular of a two-stroke motorcycle engine.
Title (en)
Device for varying the direction in which fuel flows into an engine cylinder, in particular of a two-stroke motorcycle engine.
Title (de)
Einrichtung für das Wechseln der Einspritzrichtung des Brennstoffes in einem Zweitakt-Brennkraft-Maschinenzylinder.
Title (fr)
Dispositif pour varier la direction du courant du combustible dans un cylindre d'un moteur à combustion interne à deux temps.
Publication
Application
Priority
IT 2068689 A 19890530
Abstract (en)
An engine, in particular a two-stroke motorcycle engine, comprises a cylinder (1) containing a chamber (3) in which a piston (4) moves; a fuel composed of air and the usual oil-gasoline mixture reaches said chamber (3) via feed passages (7). Movable deflector means (8) are arranged in at least one of said passages (7) in proximity to its entry (14) into the chamber (3) to orientate the fuel jet in such a manner as to result in improved scavenging of the chamber (3) during the appropriate phase of the engine cycle, said deflector means (8) varying the geometry of the passage (7) in which they are located as a function of the engine rotational speed and/or the position of the piston (4) within the cylinder chamber (3) or the engine cycle and/or the degree of opening of the accelerator. The movement of said deflector means (8) occurs by the effect of the pressure in the cylinder chamber (3) and in the feed passage (7), and the fuel throughput through said passage (7) or rather the thrust generated by it on said deflector means (8).
IPC 1-7
IPC 8 full level
F02B 25/14 (2006.01); F02B 25/20 (2006.01); F02B 61/02 (2006.01); F02B 75/16 (2006.01); F02F 1/22 (2006.01); F02B 75/02 (2006.01)
CPC (source: EP)
F02B 25/14 (2013.01); F02B 25/20 (2013.01); F02B 61/02 (2013.01); F02B 75/16 (2013.01); F02F 1/22 (2013.01); F02B 2075/025 (2013.01)
Designated contracting state (EPC)
DE ES FR GB
DOCDB simple family (publication)
EP 0400338 A2 19901205; EP 0400338 A3 19910327; IT 1229378 B 19910808; IT 8920686 A0 19890530
DOCDB simple family (application)
EP 90108198 A 19900429; IT 2068689 A 19890530