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WO/1996/036809A1 |
A bottom feed engine fuel injector (10) is provided with a valve spring calibration adjuster (142) such as an adjusting tube, which permits fuel flow from the top of the injector during manufacturing calibration and run in. The upper end...
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WO/1996/035054A1 |
The invention relates to a process and device for testing the cam offset in inline injection pumps (REP) of diesel-powered vehicles. The cam offset can quickly and easily be tested in that a standard pressure (D) curve is taken for each ...
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WO/1996/033344A1 |
An injector control apparatus for holding low and high impedance injectors open, comprises current control means for limiting the current through any one of the injectors if the current through that injector exceeds a predetermined thres...
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WO/1996/031693A1 |
Described is a device for detecting a leak in a fuel-supply system, the device measuring the fuel-pressure gradient after the fuel pump has been switched off and indicating the presence of a leak if the over pressure in part of the fuel-...
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WO/1996/020339A1 |
A fuel injection pump unit consists of a fuel injection pump (1), in which a quantity-determining member (6) is set by an actuator (13), its position being detected by a position sensor (15), and of a control unit (2) which calculates an...
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WO/1996/009472A1 |
A fuel injection nozzle comprises a nozzle body formed with an injection hole, a needle valve for opening and closing the injection hole, an armature connected to the needle valve in a mechanismic manner, and a stator which faces the arm...
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WO/1995/028236A1 |
An engine cleaner composition and method for removing carbonaceous deposits from engine fuel-system components such as mechanical and electronic fuel injectors, intake valve seats, valves, combustion cylinders, spark plugs, and oxygen se...
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WO/1995/007409A1 |
A method consisting in successively supplying the injector coils (L1, L2) for a predetermined time by closing the respective switch (S1, S2); discharging the supplied coil into a storage capacitor (12); measuring the charge of the storag...
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WO/1995/006814A1 |
A method of diagnosing malfunctioning of a high-pressure circuit including a pump (6) for supplying fuel at a pressure value controlled by a pressure regulating solenoid valve (7) supplied with current whose duty cycle is controlled in p...
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WO/1994/029589A1 |
A fuel injector (20, 30, 40, 50) adapted to be readily monitored as to the opening or closing or degree of opening of its injector nozzle (3) by means of electrically insulating (12) the body (6) of the injector from its nozzle (3) and e...
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WO/1994/023195A1 |
In prior art processes for adjusting a fuel injection valve, use is made of adjusting components like pins, screws, tubes and sleeves inside the valve, and adjusting tools. This makes heavy demands on the quality of the adjusting compone...
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WO/1994/012788A1 |
A fluid flow control valve comprises first (12) and second (14) electrically conductive body members separated by an electrically active means (16) having electrical resistance. A valve actuation member (20) slidably locates within the s...
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WO/1993/025888A1 |
A method and apparatus for cleaning the fuel injection system (12) of a vehicle without disassembling the fuel injectors (34) from the vehicle engine (14). The apparatus includes pump means (54) separate and apart from the vehicle for fe...
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WO/1993/008401A2 |
Volumetric metering equipment, especially but not exclusively for use in metering the volume of fluid pumped through one or more injectors (42) by a diesel-engine fuel injection pump, having means which serve to cause the inertia of a mo...
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WO/1992/021874A1 |
An adaptor (40) for connecting fuel or test-oil injection head to an input end of a receiving line (62). The adaptor (40) is so constructed as to enable a quick-release device (61) to be connected to it and disconnected from it.
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WO/1992/018767A1 |
The present invention relates to a method and a device for measuring the absolute and relative pressure prevailing inside a tube, such measuring operation being carried out externally without dismounting such tubes. The method comprises ...
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WO/1992/014916A1 |
An apparatus (1) is used for cleaning the fuel injection system of a motor vehicle. The apparatus (1) includes an adaptor body (3) which fits onto a container (2). The adaptor body (3) has an inlet port (6) and an outlet port (7) which c...
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WO/1992/014991A1 |
An optical process and device for measuring displacement or deformation is disclosed, in which a light beam is emitted by a light emitter (1) having a time-constant luminous power. By coupling the object to be measured to the light emitt...
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WO/1992/005363A1 |
A fuel injection nozzle has a valve member (16) slidable in a bore (15) in a nozzle body (13). The valve member has an end profile(31) shaped to engage a seating at the end of the bore. The valve member has an electrically conductive elo...
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WO/1992/003641A1 |
Device for cleaning (9) at least a part of a fuel supply system (1-8; 26-36) for supplying fuel in fluid form to at least one combustion chamber, which device (9) comprises a reservoir (10) for liquid cleaning fuel and a supply pipe (11)...
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WO/1992/003652A1 |
In prior art fuel-injection valves, a perforated disc with fuel-metering apertures is located downstream of the valve seat. The setting of the amount of fuel dispensed during the steady 'open' state of the valve can be done by precise ma...
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WO/1992/002726A1 |
In prior art electromagnetically actuatable valves the flow rate of the medium during the opening and closing processes is set by altering the force of the return spring acting on the valve closure. In addition, the finished valve is fit...
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WO/1991/019899A1 |
A fuel injection pump for internal combustion engines has an angular position sensor consisting of a stationary sensor part (36) and a mobile part in the form of a sensor wheel (30). In order to determine with the greatest possible accur...
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WO/1991/005952A1 |
The invention relates to a device for cleaning and controlling injectors of petrol engines. It is comprised of the combination of a control unit (2) and a ultrasonic cleaning unit which is itself comprised of a support adapted to the con...
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WO/1991/002152A1 |
An electromagnetic fuel injector (10) is calibrated for dynamic flow by creating a blind hole (50) in a stationary pole piece (28) passing through the solenoid coil (20). The blind hole (50) can be created by drilling, or by partially fi...
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WO/1990/014716A1 |
A method of controlling the operation of a solenoid, particularly for operating the fuel delivery valve of a fuel injector of an internal combustion engine. The method comprises controlling the rate of rise of the current in the solenoid...
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WO/1990/013801A1 |
Conventional apparatus for testing fuel injectors are inconvenient, difficult to adapt to different injectors and are quite expensive. The subject apparatus overcomes these problems by providing a testing apparatus (10) which has a fuel ...
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WO/1990/012954A1 |
A method and apparatus for operating an internal combustion engine fuel injection system wherein fuel is cyclically injected directly into an engine combustion chamber through a selectively openable nozzle, whereby the nozzle is periodic...
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WO/1990/006439A1 |
An injection nozzle fitted with an inductive needle movement probe (28) is to be so constructed that the coil (32) is properly sealed against oil leaks without requiring more space than a design without an oil seal for the coil (32). To ...
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WO/1990/005847A1 |
The aim of the invention is to obtain a fuel injection nozzle for internal combustion engines which affords maximum space for developing and lodging the induction coil (30) in the nozzle holder (10). To achieve this aim, it is proposed t...
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WO/1990/001623A1 |
Apparatus (1) for testing and/or cleaning electronic fuel injectors comprising a fuel circuit in which an electric pump (3) supplies fuel or cleaning fluid under pressure to at least one injector (8). Facilities include volumetric measur...
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WO/1990/000680A1 |
It is desirable for regulating purposes to detect the variations in pressure inside the working chamber (14) of fuel injection pumps (10) without removing the filler cap (20) and opening the fuel circuit. In order to measure the pressure...
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WO/1989/006745A1 |
A carbon-cleaning apparatus (10) for diesel engines having an independent fuel-flow system including a diesel/chemical mixture fuel tank (34) adapted to be interconnected to a diesel engine at the engine's fuel injection, there being an ...
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WO/1988/005131A1 |
A monitor device (1) for providing visual indication of the correct operation of one or more operational parameters of a solenoid operated fuel injector unit. Visual indication is provided by light emitting diodes (3, 4) or equivalent mo...
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WO/1987/001416A1 |
An arrangement for monitoring injection of fuel in an internal combustion engine, especially a compression ignition engine, in which fuel is injected into the or each cylinder via a fuel injector, comprises a polymeric piezoelectric pres...
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WO/1986/006442A1 |
A fuel injection nozzle for internal combustion engines, with a needle movement sensor, which has an induction coil (30) with a coil core (36), an anchor bolt (38) connected to the needle (18) of the valve, a magnetic check element (25) ...
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WO/1986/006138A1 |
An injector driver fault detect and protection device for use with fuel injection systems that include at least one solenoid (17) for controlling a fuel injection valve, control means for providing a control signal, injector driver means...
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WO/1986/005553A1 |
The nozzle comprises a valve needle (14) and an induction coil (30) which sends signals conditioned by the speed of the needle (14) to an evaluation circuit of the injection nozzle. The coil (30) cooperates with an armature (34, 34a) ass...
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WO/1986/005235A1 |
The circuit is intended to the detection of current modification signals of a needle transducer (Zs) connected to a constant direct voltage source and arranged in the injection device of an internal combustion engine. The circuit is capa...
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WO/1986/002411A1 |
A device for controlling and monitoring processes in a motorized vehicle, especially ignition and fuel injector processes, in which a series-produced microcomputer (10) incorporated in the vehicle for the calculation of these processes a...
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WO/1985/003127A1 |
A diesel fuel injection system (10) having a piezoelectric pressure sensor (12) for generating a reference fuel injection timing signal. The sensor has two piezoelectric pressure transducers (50) mounted in diametrically opposed relation...
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WO/1983/001814A1 |
A device for testing fuel injectors in situ. The device comprises a detector (10) having a piezo-electric crystal (50) which converts mechanical impulses caused by the fuel injector valve needle snapping back onto its seat into electrica...
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WO/1983/000555A1 |
A fluid conditioning and flow measurement circuit (10) for testing a fuel injection apparatus (12, 20). The circuit (10) has a reservoir (58) communicating with a pump (22) which supplies fuel to the injection apparatus (12, 20) the flow...
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WO/1982/004480A1 |
A test stand (10) having a principal use for testing a fuel pump and associated governor (24), has a drive shaft (16), an inertial weight (30) operatively associated therewith, and apparatus (56) for selectively engaging and disengaging ...
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WO/1982/001069A1 |
Fuel injection means, such as needle and poppet type injectors, which are displaceable between open and closed positions. The injection means also includes a chamber (24, 82) and a cylindrical spring (22, 86) positioned within the chambe...
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WO/1981/001613A1 |
A system for sensing and monitoring the injection of fuel into a fuel injection type engine, such as a diesel engine, including a piezoelectric transducer (20, 50, 60) comprising a piezoelectric collar mounted on the fuel line to sense t...
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JP7491524B2 |
A method for monitoring an injector (10) for common-rail injection systems, comprising detecting an electrical signal (V) indicative of the deformation of a diaphragm (120) of a head plate (50) having a reaction surface (58) facing a con...
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JP7487941B2 |
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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JP2024042444A |
[Problem] To calculate the amount of internal residual fuel per cycle of an internal combustion engine. [Solution] An internal combustion engine/internal residual fuel amount calculation system W that calculates THC concentration, CO con...
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JP7444004B2 |
An injection control device includes: an arithmetic unit that obtains a valve-closing time for stopping injection of fuel from a fuel injection valve based on a degree of variation in a time change of a voltage generated when the fuel in...
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