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JP2023096766A |
To provide a fuel injection valve which can reduce a resonance pulsation even in the case where the length of an introduction passage cannot be set to be short with respect to the limit length in which a frequency bandwidth of injection ...
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JP7293959B2 |
A fuel injection valve includes a nozzle portion for injecting fuel, a fuel inlet port, a fuel supply main passage for supplying the fuel from the fuel inlet port to the nozzle portion, a pressure sensor for detecting fuel pressure in th...
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JP7283418B2 |
A fuel injection control device is applied to an internal combustion engine including a fuel injection valve and causes a valve body to be in a valve open state accompanying an energization of the fuel injection valve to inject fuel. The...
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JP2023072453A |
To take measures against corrosion while suppressing deterioration of fuel economy.An ECU 60 includes: a corrosion cause determination section for determining that when characteristic change occurs in a fuel injection valve 23 provided i...
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JP2023062617A |
To provide a fuel injection device capable of suppressing high-frequency pulsation after front-stage injection in multi-stage injection and shorting an interval limitation.A nozzle part 20 includes a nozzle hole 22 for injecting fuel. A ...
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JP2023060535A |
To attach a fuel injection valve to a test device easily during a test of the fuel injection valve and conduct an inspection of a spring unit easily.When a fuel injection valve 9 is attached to a valve attachment part 12, a rod 122 is in...
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JP2023046942A |
To provide a fuel injection amount evaluation method and a fuel injection amount evaluation device capable of precisely evaluating a liquid fuel injection amount and a vaporized fuel injection amount.A fuel injection amount evaluation me...
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JP7221857B2 |
A fuel injection unit comprises a fuel injection valve which is inserted into a mounting hole provided in an engine cylinder and which ejects fuel into the combustion chamber, and a valve securing unit which is joined to both the fuel in...
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JP7178815B2 |
A method for operating an internal combustion engine with multiple cylinders. Each cylinder of the internal combustion engine includes at least one fuel injector, and each fuel injector is activated for opening and closing via a solenoid...
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JP7175909B2 |
The subject matter of this specification can be embodied in, among other things, a method for characterizing a fluid injector that includes receiving a collection of waveform data, identifying a pull locus, determining a detection thresh...
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JP7172681B2 |
To provide a fuel injection control device capable of switching a reflux method.A control IC 6 controls on and off of a discharge switch 7, a constant current control switch 8, a cylinder selection switch 9, and an MOS transistor 12b. Th...
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JP2022547487A |
A method is provided for testing a valve body (22) of an injection valve (10) for liquefied gas. The valve body includes a plunger piston chamber (23) forming a compression chamber (25), a suction valve (32) having a suction piston (35),...
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JP7165044B2 |
This fuel includes: a first switching element disposed between a booster circuit boosting a battery power and one end of a solenoid; a second switching element disposed between a battery and one end of the solenoid; a third switching ele...
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JP7139223B2 |
An object of the present invention is to promote the stabilization of the fuel injection amount in a fuel injection device in which a valve body and a movable iron core are configured to be relatively displaceable. In a control unit 120 ...
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JP7131492B2 |
To provide a defective part specification device and a defective part specification system capable of accurately specifying a defective part of a fuel supply device.A defective part specification device includes: a determination section ...
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JP2022109771A |
To improve accuracy of spray simulation by predicting presence of fine liquid droplets generated in the vicinity of a nozzle outlet.A spray simulation device 100 performing spray simulation of a nozzle spraying liquid includes: a speed g...
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JP7056374B2 |
To provide a characteristic adjustment device for a valve device that can reduce adjustment time for a circulation characteristic of fluid.A flow adjustment device 1 for a fuel injection valve 5 comprises a pump 11, a test oil supply pip...
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JP7056373B2 |
To provide a characteristic adjustment device for a valve device that can reduce adjustment time for a circulation characteristic of fluid.A flow adjustment device 1 for a fuel injection valve 5 comprises: a main pump 11 capable of suppl...
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JP7035759B2 |
To control energization to a solenoid so that fuel injection is not performed in energization for detecting a characteristic of the solenoid of a fuel injection valve.Solenoids (58, 60) for opening/closing and driving a valve element (54...
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JP7021491B2 |
A fuel injection system is provided with a pressure accumulator accumulating a high pressure fuel, a fuel pump supplying the high pressure fuel to the pressure accumulator, a fuel injector injecting the high pressure fuel, and a fuel pre...
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JP7021595B2 |
To acquire passage characteristics of orifices in a fuel injection system in a lump.A fuel passage characteristic acquisition device (30) is employed to a fuel injection system having a pressure accumulation vessel (42), a fuel injection...
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JP7005404B2 |
To provide an inspection device and an inspection method of a fuel pump capable of inspecting pressure characteristics of the fuel pump whose driving source is a brushless motor.An inspection device 1 of a fuel pump includes: a tank 2 in...
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JP6984433B2 |
To provide a device for determining fuel injection valve abnormality which can properly determine a requirement of the replacing of a fuel injection valve.A device (30) for determining fuel injection valve abnormality is applied to a fue...
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JP6975096B2 |
A fuel injection control device includes: an energization control unit that controls a fuel injection valve; an inter-terminal voltage acquiring unit that acquires an inter-terminal voltage of the fuel injection valve at a predetermined ...
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JP6945556B2 |
A method is described for diagnosing errors in an internal combustion engine in which fuel is injected from a high-pressure accumulator into associated combustion chambers with the aid of multiple fuel injectors, a first value (Rstat,2) ...
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JP6939366B2 |
To appropriately eliminate effects of front-stage injection in rear-stage injection in multi-stage injection.A fuel injection system includes: a common rail 11; a fuel pump 12 for pressure-feeding fuel to the common rail 11; a fuel injec...
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JP6915364B2 |
To provide a fuel pressure model waveform calculation device capable of calculating a fuel pressure model waveform indicating fluctuation of fuel pressure by fuel injections of second and following stages in multi-stage injection with hi...
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JP2021101104A |
To provide a fuel injection control device which can stabilize motion of a movable element and a valve body.A fuel injection control device of the invention controls a fuel injection amount of a fuel injection device including: a valve b...
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JP6835960B2 |
Various embodiments include a method for checking a calibration of a pressure sensor comprising: moving a piston toward a TDC in successive cycles; while the piston moves toward TDC, closing an inlet valve thereby adjusting a setpoint va...
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JP2021505812A |
The method and apparatus for characterizing the injection behavior of the injection valve (15) for the liquid are the method step of injecting the liquid into the measuring chamber (11) by the injection valve (15) and the injection valve...
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JP6807861B2 |
A method of checking a deaerating valve for an injector valve. the injector valve with pistons and a top cover is placed in a holder and the deaerating valve is mounted in the top cover and control oil is supplied to the deaerating valve...
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JP2020183753A |
To provide a method for monitoring an injection device for a common rail injection device system.A method for monitoring an injection device 10 of a common rail injection system comprises: detecting an electrical signal, wherein the elec...
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JP2020169643A |
To automatically update electronic trim files in a machine system each time a machine control system is brought into an activated state, using electronic trim files resident on electronically controlled components.Operating a machine sys...
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JP2020112159A |
To provide a new method of operating an internal combustion engine, and a control device to execute the method.In a method of operating an internal combustion engine having a plurality of cylinders (2), the engine has at least one fuel i...
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JP2020112139A |
To provide a measuring method of a spray angle which can measure an angle of a spray at favorable accuracy.A measuring method of a spray angle measures an angle α1 of a spray M1 injected from a plurality of injection ports NH1 of an inj...
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JP2020094539A |
To provide a control device for an internal combustion engine capable of appropriately suppressing corrosion of a fuel injection valve due to adhesion of condensed water.An ECU 40 for controlling an engine 10 which includes a fuel inject...
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JP6699582B2 |
To provide a method for evaluating an injector contracted flow that can decide a degree of contracted flow for each injection hole corresponding to various tip shapes of injector.A method for evaluating an injector contracted flow includ...
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JPWO2019003757A1 |
The electromagnetic valve drive control circuit (30) is a timing generation circuit (31) that outputs a timing signal that controls the drive circuit (20) according to the electromagnetic valve open / close command signal (S1), and the t...
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JP6686508B2 |
To provide an internal combustion engine that: has a fuel injection device including a three-way valve located between a high-pressure side fuel flow passage, a low-pressure side fuel flow passage and a control chamber for controlling a ...
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JP6682237B2 |
The present invention relates to a reciprocating piston internal combustion engine and, more specifically, to a gas supply system (1) for a uniflow scavenging type large two-stroke diesel engine. The gas supply system (1) includes a gas ...
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JP6670893B2 |
To suppress performance necessary for a calculation load or pressure sensor of a drive device, and also detect variation in injection amount of a fuel injection device of each cylinder to correct the variation in injection amount.A drive...
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JP2020026760A |
To provide a fuel injection control device which can properly control a fuel injection device following a requirement injection quantity, and a fuel injection control method.A fuel injection control device 2 comprises: a time setting par...
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JP6636043B2 |
A fuel injector includes an injector housing, a longitudinally movable nozzle needle, and a force sensing element. The injector housing defines a nozzle chamber, a pressure chamber, and a measuring chamber. The nozzle chamber is configur...
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JP2019210933A |
To provide a method for determining a closing point of an electromagnetic fuel injector.In this method, at the time of starting an injection operation, a positive voltage is applied to a coil of an electromagnetic actuator, so that a cur...
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JP6610569B2 |
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JP6607203B2 |
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JP6605362B2 |
The invention provides a method for function-checking ignition fluid injectors (13) of an engine and especially a dual-fuel engine. The engine includes a plurality of cylinders (2) and an ignition fluid injection system. The ignition flu...
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JP2019532214A |
The present invention is a method of checking the pressure sensor (35) of the high pressure injection system (13), in which the piston (22) of the high pressure pump (15) is continuously connected in the compression chamber (33) of the h...
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JP6597535B2 |
An ECU as a valve body operation estimation device includes a sampling unit that obtains at least one of voltage and current of the electromagnetic coil as sample values at intervals of a predetermined time in a sampling period set based...
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JP6572840B2 |
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