Honda Giken Kogyo Kabushiki Kaisha

Toshio Shioya

Hiroyuki Nishimura

Kiyoshi Ishii

Shizuo Yagi

Katsuhiko Kimura

Takashi Umemoto

Yukio Tada

A fuel injection system having a fuel distributor which is connected to a fuel supply tube. The main fuel nozzles are fitted into openings in the lower surface of the fuel distributor and holes in the intake manifold near the main combustion chambers. A holding member supports the mid portion of the fuel nozzles and is connected to the fuel distributor. A fuel branching member is connected to the upper surface of the fuel distributor to supply fuel to the sub fuel injection nozzle. A cap seals the second end of the branched fuel passage from the atmosphere. An accommodating chamber is formed within a holding cylinder which is fitted about the leading end portion of the sub fuel injection nozzle. A fuel mixer is fitted within the accommodating chamber to emulsify the fuel. The emulsion is then injected into the unit sub intake passage through an emulsion tube. A holding member retains the sub fuel injection nozzle about its mid portion and is attached to the fuel branching member. The fuel branching member is attached to the fuel distributor to securely mount the sub fuel injection nozzle. A regulator valve is attached to the branched fuel passage to regulate the fuel pressure of the main injection nozzles and the sub injection nozzles.

Fuel feeding system for an internal combustion engine

An exhaust gas recirculation system for an internal combustion engine employs a recirculation control valve in a passageway connecting the engine exhaust passage to the engine intake passage downstream from the throttle valve. An air conduit having an air control valve therein furnishes atmospheric air to the intake passage downstream from the throttle valve. Vacuum responsive actuators are provided for each of the control valves and they are operated by vacuum pressure regulated by a regulating valve, which is itself responsive to differential pressure between vacuum intensity in the intake passage upstream from said throttle valve and modified atmospheric pressure. The modified atmospheric pressure is obtained downstream from a variable throttling valve mounted in a bypass passage connected to the air conduit upstream and downstream with respect to a restriction therein. If atmospheric pressure correction is required, a sealed flexible bellows surrounded by atmospheric pressure may be connected to influence the operation of the variable throttling valve.

Exhaust gas recirculation for engine

Exhaust gas recirculation apparatus for an internal combustion engine employs a vacuum responsive control valve in a passageway connecting the engine exhaust passage to the engine intake passage downstream from the throttle valve. A unitary housing comprising a base, a body, and a cap contains an air control valve and a regulating valve each having a flexible diaphragm responsive to differential pressure. The diaphragm for the air control valve is clamped between the cap and the body, and the diaphragm for the regulating valve is clamped between the body and the base. Vacuum pressures on opposite sides of the diaphragm for the air control valve are obtained from a control pipe system and from an air conduit downstream from the air control valve. Vacuum pressures on opposite sides of the diaphragm for the regulating valve are obtained from a vacuum line and from the air conduit upstream from the air control valve. The regulating valve acts to control vacuum pressure in the control pipe system by bleeding vacuum pressure therein through a variable opening into the vacuum line.

Unitary assembly for control of EGR apparatus for engine

An exhaust gas recirculation system for an internal combustion engine employs a recirculation control valve in a passageway connecting the engine exhaust passage to the engine intake passage downstream from the throttle valve. An air conduit having an air control valve therein furnishes atmospheric air to the intake passage downstream from the throttle valve. Vacuum responsive actuators are provided for each of the control valves and they are operated by vacuum pressure regulated by a regulating valve, which regulating valve is responsive to differential pressure between vacuum intensity in the intake passage upstream from said throttle valve and modified atmospheric pressure. The modified atmospheric pressure is obtained downstream of a restriction in the air conduit.

Engine exhaust gas recirculation system

A system for controlling introduction of gas into a passage of an internal combustion engine employs a first control valve in a gas introduction passageway, a second control valve in an air conduit connecting the intake passage to atmosphere, and a regulating valve responsive to vacuum intensity in the intake passage. The regulating valve actuates vacuum responsive actuators for the control valves. This system is used for recirculating exhaust gases into the intake passage. The regulating valve in combination with a restricted orifice for the actuator of the second control valve act to rapidly stop exhaust gas recirculation when the operator decelerates the engine.

Exhaust gas recirculation regulating system

An internal combustion piston engine employs a stratified charge. Separate carburetor throats are provided for directing rich air-fuel mixture to a prechamber and lean air-fuel mixture to a main combustion chamber. The rich mixture is heated by the engine exhaust gases and then delivered to the prechamber. A spark plug ignites the rich mixture and causes a torch flame to project laterally through a torch slot in the prechamber wall into the main combustion chamber to ignite the lean mixture contained therein. In this way, the amount of unwanted emissions such as carbon monoxide may be reduced in the exhaust gases discharged into the atmosphere.

Growing community of inventors

Urawa, Japan

Toshio Shioya