Compressed air assisted fuel injection system

F - Mech Eng,Light,Heat,Weapons – 02 – M

Patent

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Details

F02M 69/10 (2006.01) F01M 3/00 (2006.01) F02B 13/00 (2006.01) F02B 25/22 (2006.01) F02B 33/04 (2006.01) F02M 67/02 (2006.01)

Patent

CA 2338877

An internal combustion engine having a compressed air assisted fuel injection system (20). The injection system has a compressed air accumulator (34) with a first aperture (30) into the cylinder of the engine and a second aperture (38) into the crankcase (18) of the engine. The two apertures are located at opposite ends of the accumulator and the accumulator has a tube shape. The accu-mulator blows off pressure every time one of the ports into the cylinder is closed. The tube shape of the accumulator forms a tuned reflection pipe for a compression wave from the cylinder to gen-erate a reflected compression wave for assisting in delivering fuel and air into the cylinder. The two apertures are adapted to be opened and closed by the piston head of the engine.

Moteur à combustion interne doté d'un système (20) d'injection de carburant à air comprimé. Le système d'injection comprend un accumulateur (34) d'air comprimé présentant une première ouverture (30) dans le cylindre du moteur ainsi qu'une seconde ouverture (38) dans le carter (18) du moteur. Les deux ouvertures sont situées au niveau d'extrémités opposées de l'accumulateur et présentent une forme tubulaire. L'accumulateur laisse échapper la pression à chaque fois qu'un des orifices du cylindre est fermé. La forme tubulaire de l'accumulateur forme un conduit à réflexion accordée pour une onde de compression provenant du cylindre afin de produire une onde de compression réfléchie assistant l'apport de carburant et d'air dans le cylindre. Les deux ouvertures sont adaptées pour être ouvertes et fermées par la tête de piston du moteur.

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