DE102011081867A1 - Valve e.g. non-return valve, for e.g. common-rail high pressure pump for conveying fuel, has valve element with portions cooperated with valve seat of valve plate, so that throttling effect is realized depending on stroke of valve element - Google Patents
Valve e.g. non-return valve, for e.g. common-rail high pressure pump for conveying fuel, has valve element with portions cooperated with valve seat of valve plate, so that throttling effect is realized depending on stroke of valve element Download PDFInfo
- Publication number
- DE102011081867A1 DE102011081867A1 DE102011081867A DE102011081867A DE102011081867A1 DE 102011081867 A1 DE102011081867 A1 DE 102011081867A1 DE 102011081867 A DE102011081867 A DE 102011081867A DE 102011081867 A DE102011081867 A DE 102011081867A DE 102011081867 A1 DE102011081867 A1 DE 102011081867A1
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- valve
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- plate
- pressure pump
- valve member
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 239000000446 fuel Substances 0.000 title claims description 6
- 230000000694 effects Effects 0.000 title abstract description 14
- 238000007789 sealing Methods 0.000 claims abstract description 13
- 230000001419 dependent effect Effects 0.000 claims description 4
- 230000035945 sensitivity Effects 0.000 description 3
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000001404 mediated effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0056—Throttling valves, e.g. having variable opening positions throttling the flow
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
- F02M59/367—Pump inlet valves of the check valve type being open when actuated
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
- F02M59/46—Valves
- F02M59/466—Electrically operated valves, e.g. using electromagnetic or piezoelectric operating means
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/0031—Valves characterized by the type of valves, e.g. special valve member details, valve seat details, valve housing details
- F02M63/0033—Lift valves, i.e. having a valve member that moves perpendicularly to the plane of the valve seat
- F02M63/0035—Poppet valves, i.e. having a mushroom-shaped valve member that moves perpendicularly to the plane of the valve seat
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M63/00—Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/00 - F02M57/00 or F02M67/00; Details, component parts, or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/00 - F02M61/00 or F02M67/00; Combination of fuel pump with other devices, e.g. lubricating oil pump
- F02M63/0012—Valves
- F02M63/007—Details not provided for in, or of interest apart from, the apparatus of the groups F02M63/0014 - F02M63/0059
- F02M63/0078—Valve member details, e.g. special shape, hollow or fuel passages in the valve member
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
- F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
- F04B1/0404—Details or component parts
- F04B1/0452—Distribution members, e.g. valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
- F16K1/32—Details
- F16K1/54—Arrangements for modifying the way in which the rate of flow varies during the actuation of the valve
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Check Valves (AREA)
Abstract
Description
Die Erfindung betrifft ein Ventil für eine hydraulische Pumpe, insbesondere eine Hochdruckpumpe zur Förderung von Kraftstoff, wie beispielsweise eine Common-Rail-Pumpe, mit den Merkmalen des Oberbegriffes des Anspruchs 1. Ferner betrifft die Erfindung eine Hochdruckpumpe mit einem solchen Ventil.The invention relates to a valve for a hydraulic pump, in particular a high pressure pump for conveying fuel, such as a common rail pump, with the features of the preamble of
Stand der TechnikState of the art
Ein Ventil der vorstehend genannten Art findet bei Hochdruckpumpen insbesondere als Einlass- oder Saugventil Einsatz. Ein solches Einlass- oder Saugventil ist in der Regel als Rückschlagventil ausgebildet, welches im Förderbetrieb der Pumpe geschlossen ist, um aus der Hubbewegung eines Pumpenkolbens einen Fördereffekt zu erzielen. Das Ventilglied ist hierzu vorzugsweise hubbeweglich in einer Ventilplatte geführt und in Richtung eines in der Ventilplatte ausgebildeten Ventilsitzes über die Federkraft einer Ventilfeder axial vorgespannt.A valve of the aforementioned type is used in high-pressure pumps in particular as an inlet or suction valve use. Such an inlet or suction valve is usually designed as a check valve, which is closed in the pumping operation of the pump in order to achieve a conveying effect from the stroke movement of a pump piston. For this purpose, the valve member is preferably guided in a liftable manner in a valve plate and axially biased in the direction of a valve seat formed in the valve plate via the spring force of a valve spring.
Im Normalbetrieb einer Hochdruckpumpe ist regelmäßig eine maximale Entdrosselung des Ventilgliedes des Einlass- bzw. Saugventils erwünscht, um einen möglichst hohen Durchfluss bei zugleich geringem Differenzdruck zu erreichen. Die Fördermenge wird dabei in der Regel über eine dem Einlass- bzw. Saugventil vorgeschaltete Zumesseinheit gesteuert.In normal operation of a high-pressure pump, a maximum de-throttling of the valve member of the inlet or suction valve is regularly desired in order to achieve the highest possible flow rate at the same time as a low differential pressure. The delivery rate is usually controlled via a metering unit upstream of the inlet or suction valve.
Darüber hinaus sind jedoch Pumpen bekannt, bei welchen die Fördermenge über eine Druckregelung oder eine elektrische Ansteuerung des Ventils gesteuert wird. In diesen Fällen ist die Kleinstmengendarstellung, d.h. Mengen von weniger als 2 l/h, problematisch, da bereits geringe Druck- und/oder Hubunterschiede zu großen Mengenschwankungen führen können.In addition, however, pumps are known in which the flow rate is controlled by a pressure control or an electrical control of the valve. In these cases, the least amount representation, i. Quantities of less than 2 l / h, problematic, since even small pressure and / or stroke differences can lead to large volume fluctuations.
Der vorliegenden Erfindung liegt die Aufgabe zugrunde, ein Ventil der eingangs genannten Art bereit zu stellen, das jedoch eine geringere Sensitivität aufweist, um auch Kleinstmengen stabil darstellen zu können.The present invention has for its object to provide a valve of the type mentioned above, however, has a lower sensitivity to represent even small amounts stable.
Zur Lösung der Aufgabe wird ein Ventil mit den Merkmalen des Anspruchs 1 vorgeschlagen. Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben. Darüber hinaus wird eine Hochdruckpumpe mit einem solchen Ventil vorgeschlagen.To solve the problem, a valve with the features of
Offenbarung der ErfindungDisclosure of the invention
Das vorgeschlagene Ventil für eine hydraulische Pumpe, insbesondere eine Hochdruckpumpe zur Förderung von Kraftstoff, umfasst ein axial bewegliches Ventilglied, das eine Ventilplatte durchsetzt und in Richtung eines in der Ventilplatte ausgebildeten Ventilsitzes über die Federkraft einer Ventilfeder axial vorgespannt ist. Erfindungsgemäß weist das Ventilglied einen sich an eine Dichtfläche anschließenden ersten Abschnitt mit einem ersten Durchmesser D1 sowie einen unmittelbar oder mittelbar hieran anschließenden zweiten Abschnitt mit einem sich vom ersten Durchmesser D1 unterscheidenden zweiten Durchmesser D2 auf, wobei der erste und/oder der zweite Abschnitt drosselbildend mit dem Ventilsitz der Ventilplatte zusammenwirken, so dass eine vom Hub des Ventilgliedes abhängige Drosselwirkung realisierbar ist. Das vorgeschlagene Ventil weist somit eine nicht lineare Öffnungscharakteristik auf. Dies hat den Vorteil, dass beispielsweise im Bereich kleiner Hübe eine stärkere Drosselung bewirkbar ist, welche zu einer Verringerung der Sensitivität führt, so dass auch geringe Fördermengen stabil dargestellt werden können.The proposed valve for a hydraulic pump, in particular a high-pressure pump for conveying fuel, comprises an axially movable valve member which passes through a valve plate and is axially biased in the direction of a valve seat formed in the valve plate via the spring force of a valve spring. According to the invention, the valve member has a first section adjoining a sealing surface with a first diameter D 1 and a second section directly or indirectly connected thereto with a second diameter D 2 different from the first diameter D 1 , the first and / or the second Part throttle forming with the valve seat of the valve plate cooperate, so that a dependent of the stroke of the valve member throttle effect can be realized. The proposed valve thus has a non-linear opening characteristic. This has the advantage that, for example, in the area of small strokes, a stronger throttling can be effected, which leads to a reduction of the sensitivity, so that even low delivery quantities can be represented stably.
Um im Bereich kleiner Hübe die Drosselwirkung zu verstärken bzw. mit zunehmendem Hub des Ventilgliedes die Drosselwirkung zu verringern, wird vorgeschlagen, dass der Durchmesser D1 des ersten Abschnitts größer als der Durchmesser D2 des zweiten Abschnitts des Ventilgliedes gewählt ist. Zwischen dem Ventilsitz und dem Ventilglied wird demnach im Bereich des ersten Abschnitts eine Drosselstelle ausgebildet, deren Drosselwirkung größer als im Bereich des zweiten Abschnitts ist. Vorzugsweise ist der Durchmesser D2 derart gewählt, dass die Drosselwirkung in diesem Bereich unwesentlich ist, um einen möglichst hohen Durchfluss zu erzielen.In order to increase the throttling effect in the region of small strokes or to reduce the throttling effect with increasing stroke of the valve member, it is proposed that the diameter D 1 of the first section be greater than the diameter D 2 of the second section of the valve member. Between the valve seat and the valve member, therefore, a throttle point is formed in the region of the first portion, whose throttle effect is greater than in the region of the second portion. Preferably, the diameter D 2 is selected such that the throttle effect is insignificant in this area in order to achieve the highest possible flow.
Bevorzugt ist zwischen dem ersten Abschnitt und dem zweiten Abschnitt des Ventilgliedes ein dritter Abschnitt angeordnet, der zumindest teilweise konisch verlaufend ausgebildet ist. Der konisch verlaufende Abschnitt wirkt vermittelnd zwischen den beiden unterschiedliche Durchmesser aufweisenden Abschnitten des Ventilgliedes, wobei der dritte Abschnitt – zumindest über einen Teilbereichebenfalls drosselbildend ist. Im Bereich der beiden anderen Abschnitte ist das Ventilglied vorzugsweise zylinderförmig ausgebildet.Preferably, a third portion is arranged between the first portion and the second portion of the valve member, which is formed at least partially conical. The conically extending section mediates between the two sections of the valve member having different diameters, wherein the third section is also throttle-forming at least over a partial region. In the region of the other two sections, the valve member is preferably cylindrical.
Alternativ können die beiden zylinderförmigen Abschnitte auch unmittelbar aneinander angrenzend ausgebildet sein, d.h. ohne einen konisch verlaufenden dritten Abschnitt. Auf diese Weise wird eine Drosselstufe ausgebildet, welche eine sprunghafte Verringerung der Drosselwirkung mit zunehmendem Hub des Ventilgliedes bewirkt. Denn ab einem bestimmten Hub des Ventilgliedes fährt der Abschnitt mit engem Spiel aus der Ventilplatte heraus und gibt einen deutlich größeren Querschnitt frei, so dass die anfängliche Drosselung überwunden bzw. stark reduziert wird. Nunmehr kann die gewünschte Maximalmenge dargestellt werden.Alternatively, the two cylindrical sections may also be formed directly adjacent to one another, i. without a tapered third section. In this way, a throttle stage is formed, which causes a sudden reduction of the throttle effect with increasing stroke of the valve member. Because at a certain stroke of the valve member of the section moves out of the valve plate with close clearance and releases a much larger cross-section, so that the initial throttling is overcome or greatly reduced. Now, the desired maximum amount can be displayed.
Weiterhin bevorzugt ist die Dichtkontur des Ventilsitzes der Ventilplatte als Ringkante ausgebildet. Die als Ringkante ausgebildete Dichtkontur dient zugleich als mit den Ventilgliedabschnitten unterschiedlichen Durchmessers zusammenwirkende Steuerkante. Further preferably, the sealing contour of the valve seat of the valve plate is designed as an annular edge. The sealing contour formed as an annular edge also serves as a control edge cooperating with the valve member sections of different diameters.
Vorteilhafterweise schließt sich an den Ventilsitz der Ventilplatte eine Bohrung an, welche im Wesentlichen zylinderförmig ausgebildet ist. Zur Ausbildung der als Dichtkontur dienenden Ringkante geht die zylinderförmige Bohrung der Ventilplatte vorzugsweise in einen Konus über.Advantageously, a bore connects to the valve seat of the valve plate, which bore is essentially cylindrical. To form the annular edge serving as a sealing contour, the cylindrical bore of the valve plate preferably merges into a cone.
Alternativ oder ergänzend wird vorgeschlagen, dass die Bohrung einen als Zulauf dienenden ersten Abschnitt sowie einen als Führung für das Ventilglied dienenden zweiten Abschnitt aufweist. Die Abschnitte der Bohrung besitzen hierzu vorzugsweise unterschiedliche Durchmesser.Alternatively or additionally, it is proposed that the bore has a first portion serving as an inlet and a second portion serving as a guide for the valve member. The sections of the bore preferably have different diameters for this purpose.
Vorteilhafterweise ist die Dichtfläche des Ventilgliedes konisch verlaufend ausgebildet, wobei vorzugsweise der Konuswinkel der Dichtfläche kleiner als der Konuswinkel des Ventilsitzes gewählt ist.Advantageously, the sealing surface of the valve member is formed conical, wherein preferably the cone angle of the sealing surface is selected to be smaller than the cone angle of the valve seat.
Gemäß einer Weiterbildung der Erfindung ist das Ventil mittels eines elektromotorischen, elektromagnetischen, elektromechanischen und/oder hydraulischen Stellers betätigbar. Bei einem derartigen Ventil kommen die vorstehend genannten Vorteile der Erfindung besonders zum Tragen, da – wie eingangs bereits erwähnt – geringe Druck- und/oder Hubschwankungen zu großen Mengenschwankungen führen können und somit eine stabile Darstellung geringer Fördermengen schwierig ist. Bei Verwendung eines erfindungsgemäßen Ventils kann dagegen die hubabhängige Drosselwirkung gezielt zur Verringerung der Sensitivität des Ventils eingesetzt werden. Hierzu wird das Spiel zwischen der Ventilplatte und dem Ventilglied derart ausgelegt, dass im Bereich kleiner Hübe eine große Drosselwirkung und im Bereich großer Hübe eine deutlich reduzierte Drosselwirkung zur Durchflussmaximierung erzielt wird.According to one embodiment of the invention, the valve is actuated by means of an electromotive, electromagnetic, electro-mechanical and / or hydraulic actuator. In such a valve, the abovementioned advantages of the invention come into play particularly since, as already mentioned, small fluctuations in pressure and / or lift can lead to large volume fluctuations and thus a stable representation of low flow rates is difficult. When using a valve according to the invention, however, the stroke-dependent throttle effect can be specifically used to reduce the sensitivity of the valve. For this purpose, the play between the valve plate and the valve member is designed such that in the range of small strokes a large throttle effect and in the range of large strokes a significantly reduced throttle effect is achieved to maximize flow.
Die zur Lösung der Aufgabe ferner vorgeschlagene Hochdruckpumpe zur Förderung von Kraftstoff, insbesondere Common-Rail-Hochdruckpumpe, zeichnet sich dadurch aus, dass sie ein erfindungsgemäßes Ventil umfasst.The solution to the problem also proposed high-pressure pump for the promotion of fuel, in particular common rail high-pressure pump, is characterized in that it comprises a valve according to the invention.
Eine bevorzugte Ausführungsform der Erfindung wird nachfolgend anhand der beiliegenden Zeichnungen näher erläutert. Diese zeigen:A preferred embodiment of the invention will be explained in more detail with reference to the accompanying drawings. These show:
Ausführliche Beschreibung der ZeichnungenDetailed description of the drawings
Bei dem in der
Die Konusform des Ventilsitzes
Im dargestellten Ausführungsbeispiel eines erfindungsgemäßen Ventils ist zwischen den Abschnitten
Ferner ist aus der
Claims (7)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011081867A DE102011081867A1 (en) | 2011-08-31 | 2011-08-31 | Valve e.g. non-return valve, for e.g. common-rail high pressure pump for conveying fuel, has valve element with portions cooperated with valve seat of valve plate, so that throttling effect is realized depending on stroke of valve element |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011081867A DE102011081867A1 (en) | 2011-08-31 | 2011-08-31 | Valve e.g. non-return valve, for e.g. common-rail high pressure pump for conveying fuel, has valve element with portions cooperated with valve seat of valve plate, so that throttling effect is realized depending on stroke of valve element |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102011081867A1 true DE102011081867A1 (en) | 2013-02-28 |
Family
ID=47665000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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DE102011081867A Withdrawn DE102011081867A1 (en) | 2011-08-31 | 2011-08-31 | Valve e.g. non-return valve, for e.g. common-rail high pressure pump for conveying fuel, has valve element with portions cooperated with valve seat of valve plate, so that throttling effect is realized depending on stroke of valve element |
Country Status (1)
Country | Link |
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DE (1) | DE102011081867A1 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013210957A1 (en) | 2013-06-12 | 2014-12-18 | Robert Bosch Gmbh | Controllable suction valve for a high-pressure pump |
DE102014107599B3 (en) * | 2014-05-28 | 2015-11-12 | Eto Magnetic Gmbh | Adjustable solenoid valve device and use of such |
GB2579404A (en) * | 2018-11-30 | 2020-06-24 | Delphi Tech Ip Ltd | Head member for a HP pump of a fuel injection system |
-
2011
- 2011-08-31 DE DE102011081867A patent/DE102011081867A1/en not_active Withdrawn
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102013210957A1 (en) | 2013-06-12 | 2014-12-18 | Robert Bosch Gmbh | Controllable suction valve for a high-pressure pump |
DE102014107599B3 (en) * | 2014-05-28 | 2015-11-12 | Eto Magnetic Gmbh | Adjustable solenoid valve device and use of such |
DE102014107599B9 (en) * | 2014-05-28 | 2016-01-21 | Eto Magnetic Gmbh | Adjustable solenoid valve device and use of such |
GB2579404A (en) * | 2018-11-30 | 2020-06-24 | Delphi Tech Ip Ltd | Head member for a HP pump of a fuel injection system |
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R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |