Diesel Kiki Co., Ltd.

Diesel Kiki Kabushiki Kaisha

Hachiro Aoki

Seizi Takahashi

Toru Sakuranaka

Tadashi Kobayashi

Hitoshi Tomita

Hideya Kikuchi

Motonobu Sunaga

Junya Kuronuma

Kiyoshi Nagamata

Osamu Shiozawa

Rotation speed of automotive auxiliary machines is controlled by a drive pulley provided on a crank shaft and a driven pulley communicating with the drive pulley through a V-belt. The drive pulley comprises a rigid pulley secured on a drive shaft, a guide holder to be rotated together with the drive shaft by a mount bolt, and a slide pulley axially-movably located between the guide holder and the rigid pulley. The slide pulley provides a power piston to be moved along a guide holder shaft. The power piston, the guide holder flange, and the slide pulley define a power piston chamber. Inside of the power piston chamber are located a flyweight to be moved by centrifugal force and a servo valve to be axially moved by the flyweight. The servo valve is fitted on the outer peripheral surface of the power piston. The engine oil, supplied from an oil pan to the drive shaft, is conducted from a mount bolt into a power piston chamber through a power piston and a servo valve and conversely is returned from the power piston chamber to the oil pan through the passage on the outer peripheral surface of the mount bolt depending upon the action of the servo valve.

Stepless speed variator of a belt type

A 'comprex' supercharger, which has a rotor formed along its whole periphery with a plurality of axial cells wherein air introduced into the cells for supply to an internal combustion engine is compressed by engine exhaust gas introduced into the cells, is controlled by a control system such that a drive means for the rotor is controlled by an electronic control unit in response to output from engine operating condition sensors to control the rotational speed of the rotor so as to achieve optimum supercharging pressure to operating conditions of the engine.

Control system and method for comprex supercharger

A distribution type fuel injection pump for preventing generation of a smoke after start while maintaining the characteristics of excess fuel starting device. An engaging member is mounted on a control sleeve for control of fuel, and a delay device for abutting on the engaging member and delaying the shifting of the control sleeve is provided, whereby the shifting of the control sleeve in the fuel increasing direction is delayed even if there is a rapid actuation of an accelerator pedal in a low speed rotation zone such as an idle rotation time which does not have the characteristics of the excess fuel starting device which does not result in the supply of excessive fuel thereby to prevent the generation of smoke.

Distribution type fuel injection pump

A distributor type fuel injection pump which is provided with an eccentric connecting member coupling the timer piston of the injection timing control device to the roller holder. The eccentric connecting member comprises a first portion and a second portion eccentrically combined together. The first portion engages with the roller holder to support a predetermined one of the rollers on the roller holder, which is rotatably fitted thereon, whereas the second portion pivotably engages with the timer piston. Further provided is means for prohibiting pivotal movement of the second portion of the eccentric connecting member about the first portion of same relative to the roller holder. Displacement of the timer piston causes accurately corresponding circumferential displacement of the roller holder through the eccentric connecting member and the pivotal movement-prohibiting means to thereby achieve accurate control of the injection timing in response to the rotational speed of the engine.

Distributor type fuel injection pump having injection timing control

A distributor type fuel injection pump which is provided with an eccentric connecting member coupling the timer piston of the injection timing control device to the roller holder. The eccentric connecting member comprises a first portion and a second portion eccentrically combined together. The first portion engages with the roller holder to support a predetermined one of the rollers on the roller holder, which is rotatably fitted thereon, whereas the second portion pivotably engages with the timer piston. Displacement of the timer piston causes corresponding circumferential displacement of the roller holder through the eccentric connecting member to thereby vary the fuel injection timing.

Distributor type fuel injection pump adaptable to internal combustion

A distribution type fuel injection pump for use in a fuel injection combustion engine comprising a plunger capable of moving reciprocally along its axis and simultaneously rotating about its axis and a couple of members forming a cam mechanism having a first cam member and a second cam member. The first cam member is mounted on the plunger and the second cam member is mounted on a housing rotatably about its axis. The couple of cam members cause the plunger to move reciprocally while the plunger is rotating. The angular position of the second cam member about its axis can be controlled by a fuel injection timing control means in accordance with the engine speed. The second cam member can also turn about its axis so as to be adjusted in its angular position by a fuel injection timing adjusting means when the engine is substantially operated at the low speed, for example, at the time of engine start. An auxiliary fuel injection timing adjusting means causes the fuel injection timing adjustable means to auxiliarily adjust in angular position only when the low engine temperature is below a predetermined level.

Flyweights are connected to a fuel control rod through a tension lever and a floating lever. A speed control lever is connected to the floating lever so that the engine speed is determined by the rotational speed of the flyweights and the position of the speed control lever in combination. A governor spring is compressed between two spring seats which are slidably carried on a governor rod, and the tension lever moves against the force of the governor spring by engaging with one of the spring seats. A nut is threaded on the governor rod and retains the spring seat opposite to the tension arm. A pin integral with the nut is slidable in a groove in the governor housing so that the nut may move only axially. An end of the governor rod extends out through the housing so that rotation of the governor rod adjusts the compressive preload of the governor spring. The governor, which is basically an all-speed governor, may thus be made to function as a high-low speed governor. A fuel limiting lever is moved by the spring seat assembly to limit movement of the fuel control rod and thereby the maximum fuel injection volume. Latching means actuated by the tension lever latch the fuel limiting lever in a reduced fuel position after the flyweight speed increases above a predetermined value so that an overly rich fuel mixture may be provided for stirring. In one embodiment of the governor the fuel limiting lever is actuated by a cam which provides an optimum maximum fuel injection volume at all speeds.

Fuel injection pump governor

A fuel injection device for internal combustion engines, comprising: a source of pressurized fuel supply, a fuel distributor-controller by means of a rotor rotating in a stationary sleeve and fuel injection valves each being integrally composed of a large-diameter servo piston, a small-diameter plunger and a nozzle the fuel injection quantity control mechanism and injection-timing control mechanism utilizing the variable pressure produced by throttling, under control, the oil returning from the servo piston.

Fuel injection device for internal combustion engines

A control lever and a flyweight assembly move a floating lever which determines the position of a control rod which controls the fuel injection volume. Novel means are provided to prevent the control lever from being displaced by the floating lever during engine braking.

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Higashimatsuyama, Japan

Hachiro Aoki