F - Mech Eng,Light,Heat,Weapons – 02 – D
Patent
F - Mech Eng,Light,Heat,Weapons
02
D
123/133
F02D 7/00 (2006.01) F02M 69/22 (2006.01)
Patent
CA 1078281
ABSTRACT OF THE DISCLOSURE An air-fuel control apparatus for an injection type internal combustion engine has an air valve of butterfly type disposed in an engine intake passage up- stream of a throttle valve to define therewith an air pressure chamber and automatically operated to maintain the air pressure in the air pressure chamber substantially constant. A fuel supply circuit includes an injector at the downstream end thereof and a fuel-metering orifice between the injector and a fuel source. The fuel-metering orifice is defined by an opening in a peripheral wall of a cylinder and a fuel-metering rod slidably received in the cylinder to vary the fuel-flowing sectional area of the orifice. The air valve is operatively connected to the fuel-metering rod by means of a link mechanism such that the rotational motion of the air valve is converted into a linear motion of the fuel-metering rod. The fuel- metering orifice formed by the cylinder and the linearly movable fuel-metering rod can be more precisely and in- expensively manufactured as compared with a fuel-metering orifice formed by relatively rotatable members and, in addition, operative to more accurately meter the fuel.
309895
Ando Tsuneo
Minoura Mikio
Motosugi Katsuhiko
Sekiya Setsuro
Sumiyoshi Masaharu
Aisan Industry Co.
Toyota Jidosha Kabushiki Kaisha
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