A liquid metering device

Abstract

Abstract A liquid metering device designed primarily for metering fuel into an internal combustion engine of the reciprocating type, is installed within the intake pipe of the intake manifold. The pump device comprises an elongated housing having a port at one end, a rod-like member is arranged in a housing coaxially therewith, with one end of the member secured to the closed end of the housing. The other end of the member carries an enlarged head which is arranged to snugly but slidably fit within the port. The member and housing are made of magnetostrictive materials of different polarity and the entire housing is surrounded by an electromagnetic coil which is arranged to connect to a current pulse generator. Liquid is introduced into the housing and current pulses from the generator are applied to the coil. The magnetostrictive characteristics of the housing and piston cause the housing to elongate relative to the member with each pulse, so that a shearing action takes place between the head and wall of the port which forces the liquid out of the device in the form of uniform small diameter liquid particles, which are carried along by the air into the intake manifold and into the engine cylinders. A similar device is used to meter water into the intake manifold to increase the efficiency of the engine by increasing the anti-knock properties of the fuel and, in turn, the pollutants exhausted from the engine are minimized.

Inventors

• 👤 J Mckeen

Bibliographic Details