초록 ▼

A fuel injection valve for internal combustion engines is disclosed, in which a transducer is vibrated by an electrostrictive device, and the fuel is atomized by a vibration surface at the part of the transducer where the amplitude thereof is maximum. The transducer has a path for transporting the f

A fuel injection valve for internal combustion engines is disclosed, in which a transducer is vibrated by an electrostrictive device, and the fuel is atomized by a vibration surface at the part of the transducer where the amplitude thereof is maximum. The transducer has a path for transporting the fuel to the vibration surface. The fuel transport path may have midway thereof a valve member with a valve seat adapted to rise for opening the transport path when a predetermined vibration is exerted on the transducer.

대표청구항 ▼

A fuel injection valve for internal combustion engines, comprising: a horn having a fuel path extending therethrough; an electrostrictive device mounted on said horn and responsive to an electrical signal at a predetermined frequency for subjecting said horn to a mechanical vibration at the resonant

A fuel injection valve for internal combustion engines, comprising: a horn having a fuel path extending therethrough; an electrostrictive device mounted on said horn and responsive to an electrical signal at a predetermined frequency for subjecting said horn to a mechanical vibration at the resonant frequency of said horn, whereby said mechanical vibration is amplified at an end of said horn where an outlet of said fuel path is located; a fuel metering unit located on said fuel path within said horn for metering fuel on said fuel path, including a valve member in the form of a ball biased into pressure contact with a valve seat, said valve member being responsive to mechanical vibration at a predetermined level of amplitude for moving away from said valve seat to meter fuel through said fuel path; and atomizing means in the form of a vibration surface mounted on said horn at the outlet of said fuel path downstream from said fuel metering unit for atomizing fuel metered by said fuel metering unit and flowing onto said vibration surface from the outlet of said fuel path, wherein the length of said fuel path between said valve seat and said vibration surface is at least 1.5 times the diameter of said ball.