DELPHI TECHNOLOGIES HOLDING, S.arl Patent applications |
Patent application number | Title | Published |
20140196796 | ASSEMBLY FOR AN ELECTRICALLY OPERATED VALVE - The invention relates to an assembly for an electrically operated valve in the automotive field aimed to increase the injection pressure of fuel distributed to combustion chambers, said assembly comprising both a coil unit, wherein a solenoid can control the movements of the electrically operated valve in a housing along a given axis, and an hydraulic unit to provide fuel at the injection pressure, a clip ring being located into a cavity of the coil unit and a cavity of the hydraulic unit to maintain the coil unit and the hydraulic unit associated. The invention is characterized in that the coil unit presents a plurality of slots providing access to the clip ring, across the coil unit, from the exterior of the assembly. | 07-17-2014 |
20140170002 | FUEL PUMP - A fuel pump is provided for pressurising fuel in a high-pressure fuel injection system. The fuel pump comprises a pump head, a pumping element, a frame and a casing. The pump head has a pumping chamber that is arranged to receive fuel to be pressurised. The pumping element is arranged to reciprocate responsive to movement of a driving element, the pumping element defining, in part, the pumping chamber so that, in use, as the pumping element reciprocates, a force, transferred from the driving element, is applied to the fuel within the pumping chamber to pressurise the fuel. The frame is arranged to support the driving element and the pump head. The casing defines an internal volume for containing fluid, wherein at least a part of the frame, at least a part of the drive element, and at least a part of the pumping element are received in the casing. | 06-19-2014 |
20140112806 | PUMP ASSEMBLY - A pump assembly for use in a selective catalytic reduction system, the pump assembly comprising: a pump sub-assembly defining a pump axis; and a housing sub-assembly including a cavity for receiving the pump sub-assembly and comprising an inlet port for receiving a reagent for supply to the pump sub-assembly via a flow path; wherein at least one seal member is provided to seal the pump sub-assembly within the housing sub-assembly, the seal member being provided in a groove in an outer face of the pump sub-assembly, the seal member providing a fluid tight seal. | 04-24-2014 |
20130318948 | SOOT SENSOR FUNCTIONAL CAPABILITY MONITORING - A method of monitoring functional capability of a soot sensor that is responsive to deposition of soot from an exhaust gas stream on a sensor surface comprises acquiring a measurement signal of the soot sensor and running a plausibility check, in which it is ascertained whether the measurement signal agrees with an expected finding. According to the invention it is detected whether conditions are present, on which liquid, e.g. water, from the exhaust gas stream condensates on the sensor surface. Additionally or alternatively, such conditions are produced. The plausibility check then includes ascertaining whether the measurement signal reflects the condensation of liquid. The detection of presence of conditions for condensation comprises a measurement or an estimation of temperature on the sensor surface. | 12-05-2013 |
20130275021 | METHOD OF FUEL QUALITY DETERMINATION - A method of determining fuel quality in an internal combustion engine comprises the steps of: a) sampling a signal representative of the revolution speed of said engine during a sampling window, thereby obtaining an array of samples; and b) computing a Fourier component corresponding to a predetermined index in the frequency domain and determining a fuel quality indicator therefrom. The fuel quality indicator is representative of a magnitude of the Fourier component of this predetermined index. | 10-17-2013 |
20130269809 | INJECTION DEVICE FOR REAGENT - An injection device for administering a reagent into an exhaust passage of an internal combustion engine, the injection device having an axis along its length and comprising an outwardly opening valve member having a seating surface which is engageable with a valve seating region. A seating member provided with an internal bore which defines the valve seating region, wherein the internal bore further defines a flow re-directing region downstream of the valve seating region. The seating member has an end face provided with a feature which intersects with at least a portion of the flow re-directing region to define, together with the flow re-directing region, a spray path for reagent exiting the injection device when the valve member is moved outwardly from the bore away from the valve seating region. The spray path has a variable spray angle, relative to the axis, around the circumference of the valve seating region. | 10-17-2013 |
20130153686 | FUEL INJECTOR - The present invention relates to a fuel injector for use in a fuel system of an internal combustion engine. The fuel injector has a supply passage for high pressure fuel and an injection nozzle. The injection nozzle includes a valve needle which can engage with a valve needle seating to control fuel delivery from the fuel injector. A first control valve is provided for controlling fuel pressure within a control chamber to control the valve needle. The fuel injector also includes a second control valve for controlling fuel pressure within a low pressure drain. The invention also relates to a control valve for controlling fuel pressure within a low pressure drain. | 06-20-2013 |
20130124070 | METHOD OF ASSESSING THE FUNCTIONING OF AN EGR COOLER IN AN INTERNAL COMBUSTION ENGINE - A method of assessing the functioning of an EGR cooler of an EGR system in an internal combustion engine, wherein the EGR cooler can be selectively operated in a first and a second operating condition; and wherein the engine comprises at least one cylinder equipped with a pressure sensor. The assessment of the functioning of the EGR cooler is based on the variation of a combustion characteristic value depending on cylinder pressure (CA50), upon switching of the EGR cooler from a first to a second operating condition. | 05-16-2013 |
20130112289 | PLUG ASSEMBLY FOR HIGH-PRESSURE VALVE - A plug assembly is provided for a high-pressure valve of the type with a tubular body extending along a longitudinal axis and in which, under the action of a piloted actuator, a needle moves longitudinally between a closed position and an open position. The plug assembly includes a plug having a flat part able to be fixed onto the body transversally to the longitudinal axis, and a spring intended to apply to the needle a force biasing it axially towards the closed position. The spring is fixed to the plug forming with it an integrated assembly. | 05-09-2013 |
20130060447 | VEHICLE DIAGNOSIS DEVICE AND METHOD - A method of diagnosing faults within an engine system, the engine system comprising a plurality of cylinders, the method comprising: monitoring the output signal of one or more in-cylinder pressure sensors within the engine system, each of the one or more in-cylinder pressure sensors being associated with a cylinder within the engine system; determining a pressure related parameter for a given cylinder having an associated in-cylinder pressure sensor; and diagnosing the presence of faults within the engine system on the basis of the pressure related parameter. | 03-07-2013 |
20130020415 | ACTUATOR ARRANGEMENT FOR USE IN A FUEL INJECTOR - The present invention relates to an actuator arrangement for use in a fuel injector, comprising: a piezoelectric actuator having a body section, said body section having a first end piece and a second end piece; a rigid encapsulation member which encloses the body section and the end pieces, wherein potting material is fitted between the rigid encapsulation member and the body section, wherein the first end piece is slideably fitted into the rigid encapsulation and the second end piece is fixed to or integrated into the encapsulation member. | 01-24-2013 |
20130019668 | INJECTION CONTROL METHOD - A method of determining whether a cylinder in an engine system comprising a plurality of cylinders is ready for injection/ignition, the method comprising: monitoring the in-cylinder pressure of each of the plurality of cylinders within the engine system; determining a pressure related parameter for each cylinder within the engine system; wherein, in the event that the pressure related parameter in a given cylinder exceeds a first threshold, the method further comprises performing a diagnostic test in order to determine whether the given cylinder is ready for injection/ignition. | 01-24-2013 |
20120103179 | PUMP UNIT - A pump unit has an inlet valve, an outlet valve, a supply line for supplying fuel, a pumping chamber, and a plunger for pressurising fuel in the pumping chamber. The inlet valve includes an inlet valve member movable between a first position and a second position. The inlet valve member has an aperture formed therein. The aperture provides a first fluid pathway between the pumping chamber and the supply line when the inlet valve member is in its first position, and the aperture provides a second fluid pathway between the pumping chamber and the outlet valve when the inlet valve member is in its second position. | 05-03-2012 |
20120022766 | METHOD OF PROVIDING TRIM DATA FOR A FUEL INJECTION DEVICE - A method of providing electronic trim data for a fuel injection device to an engine system, the method comprising: reading an identifier associated with the fuel injection device; accessing a database containing trim data associated with the identifier; downloading the trim data for the fuel injection device; uploading the downloaded trim data to the engine system for use in controlling fuel injection device operation. | 01-26-2012 |
20120003110 | PUMP FOR DOSING FLUIDS - A pumping assembly is provided which is suitable for use in a variety of dosing pumps. The pumping assembly comprises a pump body with a pump bore, and a sleeve fixed within the pump bore. The sleeve has a first end, a second end and a sleeve bore. A plunger is adapted to enter the first end of the sleeve and to reciprocate within the sleeve bore. The sleeve has at least one port to allow fluid flow through a wall of the sleeve. The, or each, port is elongated in a direction substantially orthogonal to a direction of reciprocation. | 01-05-2012 |
20110297256 | STRESS RELIEF IN PRESSURIZED FLUID FLOW SYSTEM - A method of reducing tensile stress within a drilled element | 12-08-2011 |
20110239990 | FUEL INJECTION SYSTEM - The invention relates to a fuel injection system of the common rail type having a rail body comprising a central bore and one or more outlet bores in fluid communication with the central bore for communicating with a respective fuel injector. The outer circumference of the rail body is substantially oval in cross-section and is thicker in cross-section in a direction substantially perpendicular to the outlet bore axis as compared to the thickness in cross-section substantially parallel to the outlet bore axis. By increasing the thickness of the rail body in this way, stresses at the intersection of the intersection of the central bore with the outlet holes may be reduced by up to 10% or more, thereby increasing the acceptable cycled running pressure of the system. | 10-06-2011 |
20110215177 | INJECTION NOZZLE - An injection nozzle for injecting a fluid, the injection nozzle including a nozzle body and a nozzle hole defining a flow passage for fluid, the flow passage including passage walls and the nozzle hole having an inlet in fluid communication via the flow passage with an outlet wherein, the inlet is larger than the output and for at least one section through the inlet and outlet along the flow passage that the nozzle hole is defined, for all distances x within a substantial length of the flow passage, by the condition: |(dS/dx)|>45 microns/millimeter, where S=passage wall separation and x is the distance from the inlet. | 09-08-2011 |
20110209779 | FLUID ACCUMULATOR ARRANGEMENT FOR AN INTERNAL COMBUSTION ENGINE - A fluid accumulator arrangement suitable for use with a compression ignition internal-combustion engine comprising a first storage volume, a second storage volume, and valve means fluidly connected between the first storage volume and the second storage volume. In one embodiment, the valve means is a three-way control valve wherein, in a first position, the first storage volume communicates with the second storage volume, in a second position the first storage volume is isolated from the second storage volume and, in a third position, one of the first or second storage volumes communicates with a low pressure drain. The arrangement may also include control means to operate the valve means in accordance with predetermined control strategies. | 09-01-2011 |
20110186648 | FUEL INJECTOR - A fuel injector mountable with respect to a combustion chamber for delivering fuel thereto, the combustion chamber comprising a chamber ceiling and a chamber wall, the fuel injector comprising a nozzle body having a primary nozzle axis; a first outlet opening having a first axis; a second outlet opening having a second axis; and means for controlling fuel delivery through the first and second outlet openings. The means for controlling fuel delivery comprises an inner valve needle and an outer valve needle, and is arranged to permit fuel delivery from only the first outlet opening, or through both the first and second outlet openings together. The first and second outlet openings are oriented such that, in use, when fuel delivery is permitted through only said first outlet opening, a first spray formation is injected along the first axis, the first spray formation reaching a first target distance below said chamber ceiling at a radial distance from the primary nozzle axis. When fuel delivery is permitted through both openings together, respective first and second spray formations are injected along the respective first and second axes to merge externally of the injector so as to give rise to a combined spray formation having a third axis. The combined spray formation reaches a second target distance below said chamber ceiling at said radial distance from the primary nozzle axis, and is substantially equivalent to a spray formation delivered as if from a single outlet opening having a diameter greater than that of the first outlet opening. The first target distance is less than the second target distance. | 08-04-2011 |
20110174272 | FUEL PIPE ASSEMBLY AND CLAMPING MEANS - A fuel pipe assembly for supplying fuel to a fuel injector located within a bore of an engine cylinder head comprises a tube nut for connecting the fuel pipe to the fuel injector and a securing arrangement comprising a locking nut and a deformable clamp member for securing the fuel pipe within the tube nut. The tube nut comprises a tubular member defining an axial bore to receive the fuel pipe, a distal end shaped for cooperation with the head of the fuel pipe, and a proximal end having an attachment mechanism for engaging a compatible attachment mechanism of the locking nut. The locking nut has an axial bore to receive the fuel pipe, and an attachment mechanism for engaging a compatible attachment mechanism of the tube nut. The clamp member defines a bore to receive the fuel pipe and is deformable under compression. In a first state of engagement, the locking nut and tube nut define a volume therebetween that accommodates the clamp member in an unstrained configuration and the fuel pipe is able to move laterally. In a second state of engagement, the clamp member is compressed between the locking nut and tube nut into a strained configuration such that lateral movement of the fuel pipe is constrained. | 07-21-2011 |
20110146625 | FUEL PRESSURE REGULATION SYSTEM AND AN IMPROVED FUEL PRESSURE REGULATOR FOR USE THEREIN - A fuel pressure regulation system for a compression ignition diesel engine. The system comprises a fuel supply line connected to an inlet of a transfer pump and a transfer pressure fuel line connected between the transfer pump outlet and the high pressure fuel pump inlet. A fuel filter is positioned in the transfer pressure fuel line and a fuel spill line fluidly connects a fuel pressure regulator to the transfer pressure fuel line at a point between the transfer pump outlet and the fuel filter. A fuel return line is connected between the fuel pressure regulator and the fuel supply line and a control fuel line is connected between the fuel pressure regulator and the transfer pressure fuel line. The fuel pressure regulator comprises a bore within which is located a valve member moveable from a non-regulating position of the fuel pressure regulator to a regulating position of the fuel pressure regulator. In use, any fuel entering the bore through a control fuel line connection acts upon a valve member thrust surface which results in a force acting to open the fuel pressure regulator. Any fuel entering the bore through the fuel spill line connection enters a region between the first end and the second end of the bore. There is provided a leak passageway connected from a point between the first and second ends and a fuel return line connection. In normal operating use, a fuel flow path from the fuel spill line connection to the fuel return line connection is kept open when the fuel pressure regulator is in the non-regulating position. | 06-23-2011 |
20110120418 | IMPROVEMENTS RELATING TO FUEL PUMPS - A pump head suitable for use in a fuel pump for a common rail fuel injection system, comprises a pump head housing defining a plunger bore and a pumping chamber. Fuel is pressurized within the pumping chamber by a plunger reciprocating within the plunger bore. The pump head housing includes an inlet valve arrangement for controlling fuel flow into the pumping chamber. The inlet valve arrangement includes a valve member movable between open and closed positions in response to fuel pressure within a gallery. The gallery communicates with an external chamber defined by a closure means externally mounted to the pump head housing. In use, the gallery communicates with a source of low-pressure fuel via the external chamber. The pump head housing has a projection which locates the closure member on the pump head housing. | 05-26-2011 |
20110110804 | ARMATURE FOR A SOLENOID ACTUATOR - An armature for a solenoid actuator is disclosed. The armature comprises a first face comprising a recess suitable for receiving a biasing spring in use of the armature; a second face opposite the first face; and fluid communication means for providing a fluid flow path through the armature between the recess and the second face in use of the armature. The first face is uninterrupted by the fluid communication means. The invention reduces the risk of cavitation damage during operation of the actuator. In one application, the actuator is used in a fluid pump for a selective catalytic reduction system. | 05-12-2011 |
20110092092 | CONNECTOR ASSEMBLY AND METHOD OF MANUFACTURING SAME - The present invention relates to a connector assembly comprising a connector unit mounted in a housing. The connector unit has a mounting portion, at least one electrical terminal and a body portion having a locking tab. The housing has a first longitudinal axis X | 04-21-2011 |
20110041809 | CONTROL METHOD FOR A COMMON RAIL FUEL PUMP AND APPARATUS FOR PERFORMING THE SAME - A method and apparatus for controlling a fuel pump assembly comprising a plurality of pump elements for delivering fuel at high pressure to a rail volume, each of the pump elements comprising a plunger which is driven by an associated cam to perform at least one pumping event per engine revolution and a control valve for controlling fuel flow into and/or out of the pump chamber. Each pumping event corresponds to an associated cam lobe of the associated cam. The method comprises, for each pumping event of each pump element, controlling the control valve of said pump element in response to an output control signal derived from at least one previous pumping event. The output control signal is derived by measuring fuel pressure within the rail volume to derive a measured rail pressure value; and comparing the measured rail pressure value with a demanded rail pressure value to derive a rail pressure error. A proportional and integral calculation is performed on the rail pressure error to derive a proportional term for the rail pressure error and an integral term for the rail pressure error. The proportional term and the integral term are combined to derive the output control signal. | 02-24-2011 |
20110041807 | DAMPING ARRANGEMENT FOR A FUEL INJECTOR - A fuel injector for use in an internal combustion engine, the fuel injector comprising: a valve needle which is engageable with a valve needle seat to control fuel injection through an injector outlet; an actuator arrangement arranged to control fuel pressure within a control chamber, a surface associated with the valve needle being exposed to fuel pressure within the control chamber such that fuel pressure variations within the control chamber control movement of the valve needle relative to the valve needle seat; damping means for damping opening movement of the valve member, the damping means comprising a damper chamber and the damping means being arranged such that fuel pressure variations within the damper chamber damp opening movement of the valve member wherein the damping means is arranged such that in use there is a through flow of fuel through the damper chamber. | 02-24-2011 |
20110017844 | FUEL INJECTOR WITH AN IMPROVED VALVE CONTROL ARRANGEMENT - A fuel injector for a compression ignition internal combustion engine which comprises a fuel injection valve having an injection valve member which is moveable in use, under the influence of fuel pressure within an injection valve member control chamber acting upon it, between a closed position and an open position. The fuel injector further comprises a high pressure fuel supply passage to the injection valve member control chamber, and an actuator operable to open and close a discharge valve connected between the injection valve member control chamber and a fuel outlet passage to a low pressure reservoir or drain. A shut-off valve is provided in the high pressure fuel supply passage and the shut-off valve has a shut-off valve member which is moveable in use, under the influence of fuel pressure within a shut-off valve member control chamber acting upon it, between a closed position and an open position. The shut-off valve member control chamber is connectable to the low pressure reservoir or drain via the discharge valve, and a fuel transfer passage is provided between the injection valve member control chamber and the low pressure reservoir or drain. | 01-27-2011 |