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WO/2014/173920A1 |
A valve assembly (14) for an injection valve (10) comprises: -a valve body (20) comprising a central longitudinal axis (L) and a cavity (24) with a fluid inlet portion (26) and a fluid outlet portion (28), -a valve needle (22) axially mo...
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WO/2014/150749A1 |
In at least some implementations, an engine control process includes an engine speed test and other steps. The engine speed test includes the steps of a) determining a first engine speed, b) changing the air/fuel ratio of a fuel mixture ...
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WO/2014/117921A1 |
The invention relates to a method for operating an internal combustion engine comprising at least one fuel injection valve for introducing fuel into a combustion chamber of the internal combustion engine, said valve being supplied with a...
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WO/2014/094149A1 |
A method and apparatus for servicing a gaseous fuel system for an internal combustion engine comprises turning the engine off, disconnecting a sensor from a wiring harness for an engine, connecting a simulator maintenance tool to the wir...
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WO/2014/078959A1 |
A method for correcting injection behavior of a fuel injector comprising calculating a nominal value of a fuel injector family characteristic for an average fuel injector from a family of fuel injectors as a multi-variable function of en...
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WO/2014/066995A1 |
A method for detecting and diagnosing a gaseous fuel leak in a dual fuel internal combustion engine system comprises producing a fault signal indicating that there is a leak of gaseous fuel into liquid fuel when an amount of gaseous fuel...
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WO/2014/060799A1 |
The optical system allows the detection of the opening and then the control and diagnostics of injectors of any type, with any type of petrol and supply, as well as other mechanical moving parts drowned in a fluid. This system includes: ...
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WO/2014/059242A1 |
A closed loop control system for a fuel pump based on characteristics of speed, pressure, and current. The pressure generated by the pump system is increased at the point in time when the pump system is working against a dead head system...
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WO/2014/044967A1 |
The invention relates to a device (1) for measuring an amount of fluid injected by an injector, which comprises: a measurement chamber (2), into which the fluid is injected; a device (3) for injecting the fluid into said measurement cham...
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WO/2013/158070A1 |
A method and apparatus for determining a characteristic of an injector are set forth. In one example, a compressed gas is applied to the inlet chamber of the injector while the spoolvalve is closed until the pressure of the compressed ga...
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WO/2013/139671A1 |
The invention relates to a method for operating a fuel injection system, and to a fuel injection system. In said method, in order to detect the pressure prevailing in the pressure accumulator, a fuel injection valve piezo actuator is use...
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WO/2013/124890A1 |
A device that operates using electromagnetic force, and wherein magnetic flux that determines magnetic attraction is detected. A drive current is determined so as to suppress variation in magnetic flux or magnetic attraction, caused by v...
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WO/2013/094540A1 |
A fuel injection control device performs energization control of a fuel injection valve for injecting fuel to an engine, and is provided with a temperature estimation means (14a) for estimating the temperature of the fuel injection valve...
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WO/2013/089621A1 |
The invention relates to a method for error detection in a fuel-supply system comprising a feed device (260) for achieving a fuel-supply pressure (P-rail) in an engine (280) and a valve device (250) via which fuel is supplied to the feed...
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WO/2013/089497A1 |
The present invention relates to a method for diagnosing an injector of a bi-fuel vehicle. The method for diagnosing the injector of a bi-fuel vehicle according to the present invention comprises the steps of: executing a logic for inspe...
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WO/2013/081529A1 |
The present invention relates to a method pertaining to adaptation of at least one injector (301-306) for a combustion engine (101), such that said engine (101) comprises at least one combustion chamber, fuel is injected into said at lea...
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WO/2013/068090A1 |
Method of testing a gas injector valve for a combustion engine. The valve is placed in a holder (1) with a first chamber (2 )and a second chamber (3), the valve spraying nozzle (11) being placed in the first chamber (2), after which the ...
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WO/2013/064230A1 |
A fuel inlet valve (150) to be used in a double- walled fuel supply pipe system (100) is disclosed. Fuel inlet valves are fuel controlling components and have to be monitored with respect to a possible fuel leakage. The disclosed fuel in...
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WO/2013/064200A1 |
A double-walled fuel supply pipe element (110, 120) configured to be used in a fuel supply pipe system (100) of an internal combustion engine (1) is disclosed. Local leakage detection in fuel supply pipe systems (100) can be extensive. T...
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WO/2013/050530A1 |
The invention relates to a maintenance system (20) for an injector (10) controlled by a solenoid actuator. The system (20) comprises an electronic control unit arranged in a housing (22) from which an electric cable extends terminated by...
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WO/2013/034479A1 |
The invention relates to a method for analyzing the efficiency of the high-pressure pump of a fuel injection system, wherein the efficiency of the high-pressure pump is analyzed with respect to individual pumping strokes of the high-pres...
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WO/2013/034478A1 |
The present invention relates to a method for monitoring an injection fluid quantity, which is injected through an injection nozzle (3), said injection nozzle (3) being opened and closed by a closure element (7) guided in one movement, a...
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WO/2012/156015A1 |
Method for determining the amount of fuel leaving a direct-injection diesel engine injector, said amount of fuel being supplied to a cylinder of said engine in which there moves a piston, the injection of fuel being performed by a pilot ...
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WO/2012/152485A1 |
The invention relates to a method for determining a position of a lock element (4) of an injection valve (3) for an internal combustion engine, in which, in order to lock the injection valve, the lock element is moved in the direction of...
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WO/2012/139854A1 |
The invention relates to a method for detecting a nozzle chamber pressure (10) in an injector which comprises a closure element (5) for opening and closing an injection opening (4), at least one actuator (7) which directly actuates the c...
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WO/2012/140316A1 |
A fuel injection pump (12) for an internal combustion engine, the fuel injection pump (12) comprising a pump body (13), a reciprocating plunger (14) being arranged inside the pump body (13), a control sleeve (15) being arranged around th...
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WO/2012/123134A1 |
A method for refilling an emptied hydraulic coupler of a fuel injector (30) has the steps: connecting a pressure generator (36) to a return line (32) of the fuel injector (30); operating the pressure generator (36) in order to generate a...
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WO/2012/119819A1 |
The invention relates to a method for determining at least one property of a fuel, in which method a closed period of an armature of a solenoid valve, which moves through the fuel, is measured in at least one triggering period, and a fac...
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WO/2012/115036A1 |
In an in-cylinder pressure detecting device of a fuel direct injection type internal combustion engine, an annular pressure detecting element (34) is installed around a fuel injection hole (33b) at a position close to the tip end of an i...
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WO/2012/105729A1 |
The present invention relates to a test system for an engine comprising: a connector for getting inputted thereto a signal from a sensor placed on the engine or for outputting a signal for controlling the engine; a digital input/output u...
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WO/2012/072607A1 |
The invention relates to a method for estimating a fuel leakage quantity (mFuelLeak) which enters from a leaking injection valve during a shut-down time of a motor vehicle into an intake tract or into a cylinder of an internal combustion...
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WO/2012/069317A1 |
A measuring apparatus comprises a first chamber (13), a second chamber (15) and a membrane (25) separating the first chamber (13) and the second chamber (15). Furthermore the measuring apparatus comprises a notch in an outer wall of the ...
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WO/2012/059278A1 |
The invention relates to an injector test stand (10) for fuel injectors (28). The injector test stand (10) comprises a receptacle (24) for fixing a fuel injector (28), and an injection chamber (14) which can be positioned relative to the...
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WO/2012/055078A1 |
A piston fuel-injector detection device consists of a base (1), a perspective platform (2), an observation cover (3), a sliding groove (4), an adjusting handle (5), a conducting-wire column (6), a supporting plate (7), a trigger switch (...
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WO/2012/053055A1 |
Provided is a leak mechanism diagnosing system adapted such that after an engine stop duration has exceeded a predetermined period of time (YES in S100), it is not diagnosed during the current engine stop whether a relief valve, i.e., a ...
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WO/2012/040808A1 |
The invention relates to an SOS kit for pumps and injection nozzles. The entire injection system depends on the reliability, precision and operation of the valves, of the components and fuel injection nozzles, which operate with extremel...
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WO/2012/037590A1 |
In a method for testing and repairing an injector (1) for injecting fuel into the combustion chamber of an internal combustion engine, wherein the injector (1) has a nozzle (3), a restrictor plate (4), a control valve (5) and a nozzle cl...
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WO/2012/031813A1 |
The invention relates to a fuel accumulator block for testing high-pressure components of fuel injection systems. The fuel accumulator block comprises an accumulator body (10) and at least one pressure control valve (13), which is accomm...
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WO/2012/025227A1 |
The invention relates to a method for cleaning coked cavities, in particular inlet channels (10) and valves (15) of an internal combustion engine (12), comprising the following steps: introducing an alkaline liquid into a cavity to be cl...
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WO/2012/025428A1 |
A method for adapting the injection characteristic of a fuel injection valve of an internal combustion engine to production-related tolerances is described. In the method, an injection quantity correction value is determined from the dev...
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WO/2012/025479A1 |
The invention relates to a method and device for detecting when a closing point of a hydraulic valve has been reached. The valve (20) has a closing element (34) that can be operated by an electric actuator (40) for closing said valve (20...
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WO/2012/016894A2 |
A holding device (14) for a fuel injector (26) has a receptacle (18), which is designed for accommodating the fuel injector (26), and a fixing device (30, 36), which has a first part (30) and a second part (36) which are mounted in a gui...
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WO/2012/007228A1 |
A test bench (2) for a fluid pump (12) and a fluid injector (4), in particular a fuel pump and a fuel injector, has a synchronous motor (18) which can be connected mechanically to a fluid pump (12) to be tested and is configured for driv...
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WO/2012/007227A1 |
A test bench (1) for testing a fluid pump (4) and/or a fluid injector (8) has a fluid-pump receiving apparatus (2) for receiving a fluid pump (4); a fluid-injector receiving apparatus (6) for receiving a fluid injector (8); a fluid line ...
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WO/2012/007229A1 |
A test bench (2) for testing a fluid injection pump (8) and/or a fluid injector (10) has an apparatus for conditioning a test fluid which is used for testing. The apparatus has a tank (4) which is configured for receiving and storing the...
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WO/2012/002880A1 |
Measuring device for diagnosis of a piezoelectric injector means in a fuel injection system, which measuring device comprises a signal generator adapted to generating a measurement signal in the form of an AC voltage with a varying frequ...
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WO/2011/160317A1 |
A testing device for detecting the leakage of oil outlet valve coupled parts includes a base plate (1), two upright poles (2), an upper cover plate (3), a cylinder (4), a connecting plate (5), a sliding plate (6), a pressure head (7), a ...
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WO/2011/151097A1 |
The invention relates to a device and a method for testing fuel injectors, in particular of the piezoelectric type. The device comprises at least one, in particular bidirectional, interface for connecting an operating unit, at least one ...
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WO/2011/149417A1 |
The present invention relates to a method for testing an injection system which has an injector (207) for injection of pressurised liquid to a process. Said pressurised liquid can be selectively supplied to said injector via a first valv...
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WO/2011/148164A1 |
A method to remove carbonaceous deposits from the internal surfaces of ignition compression engines by increasing inlet air temperature to 60-200°C and injection of polyol instead of operational fuel for 1-30 minutes.
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