Aisan Kogyo Kabushiki Kaisha

Aisan Industry Co., Ltd.

Toyota Jidosha Kabushiki Kaisha

Denso Corporation

Satomi Wada

Mikio Hamada

Takashi Nagai

Kazuhiko Nishimura

Kenichi Murakami

Masaki Ikeya

Kouji Izutani

Keiichi Yamashita

Kingo Okada

Nobuo Suzuki

Masahide Kobayashi

Kazuhiro Yoneshige

Eiji Mori

Yozo Ota

Kunio Takagi

Yasunori Sakaue

Tadao Horiuchi

Hideyuki Nakai

Kazuhiro Shinomiya

Hiroki Endo

Masanori Senda

Hideaki Nawa

Takashi Horii

A fuel supply apparatus according to the present invention includes vapor production determining means for determining whether or not the vapor of the fuel is producible, and control means (ECU) for operating a passage resistance adjusting means of a pressure adjusting mechanism to cause increase of the pressure of the fuel supplied to an injector insomuch as the production of the vapor is inhibited when the vapor production determining means has determined a vapor producible condition.

Fuel supply apparatuses

In an engine with a supercharger, there is provided an evaporated fuel processing apparatus for collecting vapor generated in a fuel tank into a canister and purging the collected vapor into an intake passage. The supercharger includes a compressor. The evaporated fuel processing apparatus comprises a purge passage through which the vapor is purged from the canister into the intake passage upstream of the compressor, a second purge passage through which the vapor is purged from the canister into a surge tank, two electromagnetic valves which are operated to open and close the two purge passage, various sensors which detect an operating condition of the engine, and an electronic control unit (ECU) which controls the electromagnetic valves respectively on the basis of values detected by the sensors.

Evaporated fuel processing apparatuses for engines with supercharger

A fuel supply apparatus is adapted to control a pump which discharges fuel from a tank to a fuel passage, thereby regulating the pressure of fuel to be supplied to an engine. The tank includes a plurality of storage chambers, in a specific one of which the pump is placed. A part of the fuel discharged to the fuel passage is returned to the specific storage chamber through a branch passage. A storage chamber other than the specific storage chamber is in communication with the branch passage through a communication passage. A jet pump is operated to transfer the fuel from the storage chamber other than the specific storage chamber to the specific storage chamber through the communication passage by the action of the fuel flowing through the branch passage. An electronic control unit (ECU) controls an electromagnetic valve disposed in the branch passage to regulate the quantity of return flow, thereby delivering the fuel in a quantity corresponding to a consumption quantity of fuel to be sequentially consumed in the engine, to the engine through the communication passage.

Fuel supply apparatus for engines

An air-fuel mixture control device controlling a combustible air-fuel mixture to be supplied to a combustion chamber of an engine This device is constructed of an injector used for fuel supply, a fuel pump, a fuel filter, a fuel pressure regulator, and an electronic control unit (ECU) which are united as an assembly with respect to a throttle body including an intake passage and a throttle valve . A memory incorporated in the ECU stores a correction value with respect to the fuel injection quantity dispersion preliminarily experimentally determined on an assembly-by-assembly basis. The ECU corrects the fuel injection quantity based on the correction value stored in the memory to control the fuel injection quantity.

Air-fuel mixture control device of engine

In a vaporized fuel processing device, a partition wall divides an adsorbent chamber in a canister into two chambers; a first chamber and a second chamber . A purge port section and a first tank port section are opened in the first chamber , and an atmosphere port is opened to the second chamber . A second tank port section is opened to any one of the first and second chambers and . Opening/closing control valves are provided in predetermined positions; between the purge port section and a purge port of a throttle body , between the first tank port section and a fuel tank , and between the second tank port section and the fuel tank , to purge a proper amount of the vaporized fuel to the throttle body

Vaporized fuel processing device

A fuel supply apparatus for engines of a multi-point injection system using fuel tanks of many sizes and shapes is disclosed. In the fuel supply apparatus, a pump device,is constructed of an electric motor-driven fuel pump,, a fuel filter,, and a pressure regulator,, which are contained in a housing integrally constructed of a first and second cases,and,. A suction port,of the pump device,communicates with a suction opening,of the fuel pump,, while a discharge outlet portion,of the pump device,communicates with a discharge port,through the fuel filter,. The discharge port,communicates with an inlet of the pressure regulator,. An outlet of the pressure regulator,communicates with a return port,of the pump device

Fuel supply apparatus

In an ignition device for an engine,a spark plug,is operated to emit sparks with respect to the fuel-air mixture, so that the fuel-air mixture is ignited. A protrusion,provided on a flywheel,mounted on a crankshaft,is revolved with the rotation of the crankshaft,A magnet pickup,detects the passage of the protrusion,When the protrusion,passes near the magnet pickup,the magnet pickup,outputs a detection signal, in a pulse manner, having a peak value in response to the passing speed of the protrusion. When the detection signal outputted from the magnet pickup,exceeds a predetermined threshold value, the electronic control unit (ECU),operates to activate the spark plug,through an ignition coil,so that the ignition timing is advanced or delayed in accordance with the difference in rotational speed of the shaft,, i.e., of the engine

Engine ignition device

A fuel supply system having a pump for drawing and discharging fuel from a tank and a filter for catching foreign matter in the fuel. A housing has a fuel outlet and supports the pump. The pump has a fuel intake port and a fuel discharge port. A fuel passage is located in the housing and connects the fuel outlet with the discharge port The filter is located in the fuel passage. The filter has a filter case and a filter element therein. The filter case is located in the housing spaced from the inner wall thereof.

Fuel supply system having a pump with a resiliently mounted filter

Disclosed herein is a variable venturi carburetor including at least one pressure controlling port provided at the lower peripheral portion of the suction piston and adapted to face to a mixing chamber defined directly downstream of the venturi portion. The pressure controlling port is located at such a position as to communicate with the suction chamber and an atmospheric pressure chamber during middle and high intake air flowing stages as the suction piston reciprocates transversely with respect to the venturi portion, and to communicate with the suction chamber and the mixing chamber during low intake air flowing stage.

Variable venturi carburetor

A variable venturi carburetor including a fuel bypass duct bypassing the fuel metering portion of the fuel jet, the fuel jet being provided with an opening at its upper portion which opening is in opposed relation with the inlet of the fuel bypass duct for easily delivering fuel bubbles created in the fuel jet and also provided with a fuel inlet at its lower portion which is so constructed as for fuel to readily flow into the fuel jet.

A variable venturi type carburetor having a suction piston adapted to be moved toward and away from an opposing wall of the intake barrel in response to a change in the intake air flow rate so as to change the area of the venturi portion. The carburetor has a throttle valve with a tube-formed fuel introduction port through which the space defined at both sides of the throttle valve are communicated with each other. The fuel introduction port is so arranged that its upstream side end opening facing the suction piston is directed toward the wall to which the fuel discharged from the main jet is attached when the opening degree of the throttle valve is small.

Variable venturi type carburetor

Disclosed herein is an improvement in a variable venturi carburetor for an internal combustion engine including a fuel discharging main nozzle arranged in a venturi portion and a suction piston arranged in an opposite side of the main nozzle for reciprocating in response to the variation of negative pressure of air induced to the engine generated at the venturi portion and varying an area of an induction passage of the venturi portion. The improvement includes that a fore-most end of the main nozzle is projected into the venturi portion and a fuel guide member is arranged at a lower portion of the projecting portion of the main nozzle. The fuel guide member serves to guide a flow of liquid fuel when the flow rate of air flowing through the venturi portion is low and the liquid fuel is discharged through the main nozzle.

Growing community of inventors

Obu, Japan

Satomi Wada