Abstract: The invention relates to a rotating mechanism of a throttle valve for a fuel supply device of an internal combustion engine. The mechanism has an actuator for opening the throttle valve upon depressing of an accelerator, a cam lever pivotally secured to a throttle shaft and having a cam set to open the throttle valve more than the movement of said actuator upon depressing of the accelerator, a throttle lever for coupling the cam lever to the throttle shaft, and an engaging member mounted at the cam lever side to take an engaging position or a nonengaging position of the throttle lever. In this rotating mechanism of the throttle valve, the engaging member can operate to take the engaging position with respect to the throttle shaft when the actuator becomes impossible to operate.

Abstract: An electronic control fuel injection system for a spark ignition internal combustion engine is described which controls air flow rate as function of fuel flow rate by transmitting an operator's depression stroke of an accelerator pedal to a fuel selecting mechanism which determines the fuel flow rate, applying a signal representative of the selected fuel flow rate to a computer together with various correction information, calculating by the computer from the selected fuel flow rate and correction information, the optimum air flow rate, and determining the opening of a throttle valve from the calculated result via a throttle valve servo mechanism. The invention is particularly useful in eliminating hesitation of an automobile while attaining both fuel economy and low harmful exhaust emissions.

Abstract: A pump utilizing a permanent magnet used for pumping fuel or lubricating oil without an electric power supply for an internal combustion engine or liquid fuel combustion equipment. This pump does not employ the conventional flexible membrane or diaphragm to pump fluid or liquid required to provide an exactly airtight construction, but utilizes a permanent magnet with high durability and inexpensive manufacturing cost for pumping liquid steadily.

Abstract: A circuit for driving a solenoid at a high speed with a choke coil, which has a pair of switching circuits alternatively turned ON and OFF by a transistor, a solenoid coil connected to one of the switching circuits, a resistor connected to the other of the switching circuits, and a choke coil connected in series with the switching circuit and in parallel with a power source. Thus, this circuit can abruptly raise an electric current flowing through the solenoid coil by utilizing the constant current characteristics of the choke coil and the current switching characteristics of the transistor.

Abstract: An electronic control fuel injection system for a spark ignition internal combustion engine is disclosed which controls air flow rate as a function of fuel flow rate by converting an operator's depression of an accelerator pedal to an electric signal, applying the signal to a computer which preferentially determines the fuel flow rate and then the air flow rate, and feedback controlling the air flow rate by using the determined air flow rate and an actual air flow rate sensed by a pressure sensor provided at the upstream and downstream sides of a throttle valve and/or a throttle opening sensor. The computer also receives signals representative of the fuel line pressure and the air pressure in a region adjacent one or more injectors and uses this in adjusting the supply of fuel to the injector(s) to obtain a predetermined constant pressure difference thereacross. A unique digital flow control valve may also be used to precisely adjust the air flow rate.

Abstract: A mechanical lubricating pump for supplying lubricating oil to rotary parts of machines and equipment. A rotatable distributor is inserted in the lengthwise direction of a pump body, and a suction port and a discharge port are provided in the diametrical direction of the body. A worm gear is disposed at one end of the distributor, while a plunger is inserted at the other end. Upon rotation of the distributor, the plunger executes relative movements in the axial direction, so that the pumping action is effected to suck and discharge the lubricating oil. The distributor has means by which the roles of the suction port and the discharge port at the time of the forward rotation of a driving source are maintained as they are when the driving source is reversely rotated.

Abstract: A fluidic fuel charge injection device for an internal combustion engine includes an impacting stream device having a deflection control nozzle and a control chamber enclosing a main stream nozzle. The device is mounted in the engine manifold to introduce the fuel charge. The device operates at high pressure levels and the control signals are amplified to the necessary power level. An engine revolutional signal is a modulated pulse width signal formed by triggering of high power level fluidic amplifying devices which include a plurality impacting stream fluidic operating as NOR logic elements. An amplifying section includes a transverse impact modulator follower (TIMF) connected to the logic output to produce a pair of interrelated fluid signals proportional to the engine RPM. The pair of signals are applied to the control chambers or through a fluidic coupling stage to a control chamber or to the main stream nozzle for controlling the air-fuel mixture and the introduction of the charge into the manifold.

Abstract: The impulse signal producing device comprises a rotatable sleeve which has several small holes and/or slots, a supply body which is formed with air ejecting openings at positions inside the rotating paths of the small holes and/or slots, and a receiving cover which is formed with output ports at positions corresponding to the air ejecting openings. The slot is extended in the circumferential direction of the rotatable sleeve, and one end of the slot in the rotating direction is arranged on the same generating line of the rotatable sleeve as that including the position of the small hole. Air ejected from the openings passes through the small hole and slot of the rotatable sleeve and flows out of the output ports, to produce output pulses. By varying the length of the slot in the circumferential direction, the pulse width can be varied. By varying the arrangement of the small holes and slots, it is possible to vary the phases of the output pulses or to produce several pulses at the same time.