EP3964698A1 - Dispositif de distribution destiné à la distribution des écoulements de fluides, ainsi que procédé de fonctionnement d'un véhicule automobile doté d'un moteur à combustion interne - Google Patents

Dispositif de distribution destiné à la distribution des écoulements de fluides, ainsi que procédé de fonctionnement d'un véhicule automobile doté d'un moteur à combustion interne Download PDF

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Publication number
EP3964698A1
EP3964698A1 EP21187730.3A EP21187730A EP3964698A1 EP 3964698 A1 EP3964698 A1 EP 3964698A1 EP 21187730 A EP21187730 A EP 21187730A EP 3964698 A1 EP3964698 A1 EP 3964698A1
Authority
EP
European Patent Office
Prior art keywords
shut
distribution device
channel
main channel
fluid
Prior art date
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.)
Granted
Application number
EP21187730.3A
Other languages
German (de)
English (en)
Other versions
EP3964698B1 (fr
Inventor
Gerson HARTWIG
Dirk Franke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Volkswagen AG
Original Assignee
Volkswagen AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP3964698A1 publication Critical patent/EP3964698A1/fr
Application granted granted Critical
Publication of EP3964698B1 publication Critical patent/EP3964698B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/10—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor
    • F02M41/12—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor
    • F02M41/123—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined pump pistons acting as the distributor the pistons rotating to act as the distributor characterised by means for varying fuel delivery or injection timing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/16—Controlling lubricant pressure or quantity
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M9/00—Lubrication means having pertinent characteristics not provided for in, or of interest apart from, groups F01M1/00 - F01M7/00
    • F01M9/10—Lubrication of valve gear or auxiliaries
    • F01M9/109—Lubrication of valve gear or auxiliaries of rotary slide or sleeve valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
    • F01P11/04—Arrangements of liquid pipes or hoses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
    • F02D17/02—Cutting-out
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/14—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons
    • F02M41/1405—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis
    • F02M41/1411—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis characterised by means for varying fuel delivery or injection timing
    • F02M41/1422—Injection being effected by means of a free-piston displaced by the pressure of fuel
    • 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
    • F02M41/00—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor
    • F02M41/08—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined
    • F02M41/14—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons
    • F02M41/1405—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis
    • F02M41/1411—Fuel-injection apparatus with two or more injectors fed from a common pressure-source sequentially by means of a distributor the distributor and pumping elements being combined rotary distributor supporting pump pistons pistons being disposed radially with respect to rotation axis characterised by means for varying fuel delivery or injection timing
    • F02M41/1427—Arrangements for metering fuel admitted to pumping chambers, e.g. by shuttles or by throttle-valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/02—Arrangements of lubricant conduits
    • F01M2011/022—Arrangements of lubricant conduits for lubricating cylinders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P7/00—Controlling of coolant flow
    • F01P7/14—Controlling of coolant flow the coolant being liquid
    • F01P2007/146—Controlling of coolant flow the coolant being liquid using valves

Definitions

  • the invention relates to a distribution device for distributing fluid flows and a method for operating a motor vehicle with an internal combustion engine.
  • Piston cooling is used in modern combustion engines. Such a piston cooling can be implemented, for example, by using a fluid to cool the piston.
  • the fluid can be a lubricating oil, for example.
  • the fluid can be applied to the pistons by means of so-called piston cooling nozzles.
  • piston cooling nozzles of this type can be switched off, for example in order to deactivate piston cooling in certain operating states in which piston cooling is not required. This can be done, for example, by means of pressure-controlled valves integrated into the piston cooling nozzles. If the valves are subjected to a pressure that exceeds a certain limit pressure, the valves open.
  • distribution devices for distributing fluid streams are known from the prior art, in which a fluid stream entering a main channel is distributed to a plurality of outlet channels branched off from the main channel.
  • a distribution device is known in which the fluid streams entering the outlet channels from the main channel can be shut off by means of a shut-off element. The shut-off takes place in such a way that by moving a shut-off element of the shut-off element, the outlet ducts branched off from the main duct are shut off at the same time.
  • shut-off device which makes it possible to allow different flow rates by selectively shutting off or releasing two outlet channels branched off from a main channel, which outlet channels reunite after they have branched off from the main channel.
  • the invention is therefore based on the object of demonstrating a distribution device for distributing fluid flows and a method for operating an internal combustion engine in which the problems described above do not occur or at least occur to a reduced extent.
  • the object is achieved by a distribution device for distributing fluid flows and a method for operating an internal combustion engine according to the independent claims.
  • the dependent claims relate to advantageous embodiments.
  • the distribution device for distributing fluid flows has a main channel and a plurality of outlet channels branched off from the main channel.
  • the distribution device is designed to distribute a fluid flow entering the main channel to the outlet channels.
  • the fluid can in particular be a lubricant and/or a coolant, for example a lubricating oil, which fulfills a cooling function in addition to its lubricating function.
  • an inner channel is arranged inside the main channel.
  • the inner channel is configured to direct fluid entering the inner channel to at least one of the exit channels.
  • the shut-off device has a shut-off element for shutting off a fluid flow entering the inner channel from the main channel.
  • This arrangement enables the fluid flow to the at least one outlet channel to which the fluid penetrating the inner channel is directed to be shut off in a targeted manner.
  • Other outlet channels branched off from the main channel are not affected by the blocking of the fluid flow, i.e. the fluid flow entering the main channel continues to be distributed to these outlet channels. Only those outlet channels that are supplied with fluid through the inner channel are shut off by the shut-off element.
  • the outlet channels, to which the fluid penetrating into the inner channel is conducted can be reached exclusively via the inner channel by the fluid penetrating into the main channel.
  • the distribution device can be designed in such a way that the fluid flow entering the inner channel from the main channel flows through the inner channel when passing through the main channel initially washed over.
  • Such a configuration in which the inner channel is positioned within the fluid flow in the main channel, offers the particular advantage that existing design concepts can be supplemented by the inner channel and the targeted blocking of at least one outlet channel branched off from the main channel.
  • the flushing of the inner channel enables the outlet channels branched off from the main channel, which are not supplied with fluid via the inner channel, to continue to be able to be reached by the fluid flow.
  • the method according to the invention for operating an internal combustion engine provides that a shut-off element is used to interrupt a fluid flow directed to a piston to be cooled if the cylinder to which this piston belongs is not fired due to a cylinder deactivation, while at least the piston of another cylinder , which is being fired, is further cooled by means of a fluid flow branched off from the interrupted fluid flow.
  • the piston cooling of at least one cylinder can be switched off in particular by means of the distribution device described. This can be easily integrated, in particular, into existing design concepts, so that the method for operating an internal combustion engine can be carried out in an advantageous manner. In principle, however, it is also possible to selectively switch off the To enable piston cooling of individual cylinders depending on their cylinder deactivation using other technical devices.
  • the distribution device described for selectively shutting off fluid flows other than those used for piston cooling is in particular a component part of a motor vehicle.
  • the fluid streams routed to the individual outlet channels can be used, for example, to supply transmissions with a fluid.
  • the shut-off function can be used in particular to supply these transmissions with the fluid as a function of specific driving conditions. This is particularly advantageous if it is a hybrid vehicle or a vehicle with a hybrid drive.
  • parts of the drive train, in particular the transmission are temporarily not used, in particular when the motor vehicle is temporarily operated purely electrically or with a purely internal combustion engine.
  • the distribution device depending on the corresponding operating state, to cool parts of the drive train, in particular individual transmissions, selectively as a function of the operating state.
  • the inner channel is formed by a tube.
  • the inner channel can in particular be pressed into the main channel.
  • the tube that forms the inner channel can have branches that end at the branched outlet channels that are to be supplied with the fluid through the inner channel when the inner channel is in its intended position in the main channel.
  • the inner channel can have spacer elements. These can be separate components; alternatively and/or additionally, the spacer elements can be molded onto the component that forms the inner channel, for example a tube.
  • the spacer elements make it possible to press a pipe into the main duct, the outside diameter of which is smaller than the diameter of the main duct. This makes it possible for the fluid located in the main channel to flow around the inner channel.
  • the main channel can be formed by a cast component. Casting processes enable the cost-effective representation of components with comparatively complicated geometries. In this case, the channels can already have been produced during casting; alternatively and/or additionally, it is possible for the channels to be introduced into the component subsequently, for example in the form of bores.
  • the advantage of the distribution device described is that, in contrast to comparable switchable distribution devices according to the the technology, in which the shut-off device is guided in the main duct, there are no high demands on the processing of the material surfaces that delimit the main duct. In particular when the inner channel is designed as a pressed-in tube, it is possible to press it, for example, into an unmachined or almost unmachined cast part.
  • the obturator can be plugged into the main channel.
  • the shut-off device By plugging it into the main duct, the shut-off device can be assembled in a simple manner. In this case, it is possible for the shut-off element to be slipped onto the component which forms the inner channel. This results in an overall very simple installation.
  • the distribution device can be assembled in a simple manner by first pressing the pipe into the main channel and then inserting the shut-off element into the main channel at the same time and attached to the tube.
  • the shut-off element can have a housing which is arranged within the main channel and is first flowed through by the fluid stream entering the inner channel from the main channel before the fluid stream enters the inner channel.
  • the fluid stream flows out of the main channel through the housing of the obturator into the inner channel.
  • the shut-off element can have a shut-off element for shutting off the fluid flow entering the inner passage from the main channel, which shut-off element moves parallel to the main direction of extent of the main passage to shut off the fluid flow.
  • a shut-off element for shutting off the fluid flow entering the inner passage from the main channel, which shut-off element moves parallel to the main direction of extent of the main passage to shut off the fluid flow.
  • the shut-off element can be designed in such a way that the shut-off element is acted upon by the pressure of the fluid with forces acting in opposite directions in both directions of movement of the shut-off element. In this way it is possible, in particular, to design the shut-off element to be pressure-balanced. In other words, this means that the actuating forces are in particular independent of the pressure of the fluid and the position of the shut-off element along its direction of movement.
  • the shut-off element can in particular be a solenoid valve.
  • a solenoid valve offers the advantage of being able to be controlled in a simple and direct manner by a control device due to its direct electrical actuation. In this way it is possible, for example, for a control device which causes cylinder deactivation to simultaneously deactivate the piston of the deactivated cylinder or the pistons of the deactivated cylinders.
  • solenoid valves also offer the advantage that the actuation state of the valve is independent of the fluid pressure. This makes it possible, for example, to realize load states of an internal combustion engine that are associated with higher oil pressures without the shut-off element being actuated automatically as a result.
  • the distribution device 10 shown as an example in the figures has a main channel 12 . As illustrated, this can have a circular cross section and extend along a main direction of extent X.
  • the distributor device 10 also has a plurality of outlet channels branched off from the main channel 12 . In the example shown, these are the outlet channels 14, 16, 18, 20, 22 and 24.
  • the distribution device 10 can be, for example, an oil gallery of a cylinder crankcase.
  • the outlet channels 14, 16, 18, 20, 22, 24 shown in the example shown can in particular be assigned to different elements of an internal combustion engine to be lubricated and/or cooled and supply them with the fluid, which can be oil, for example .
  • the exhaust port 14 may supply the cylinder head, the exhaust port 18 a bearing, while the individual exhaust ports 16, 20, 22 and 24 are associated with individual piston cooling nozzles for cooling the pistons of the cylinders of the engine.
  • each of the outlet channels 16, 20, 22 and 24 can be associated with a piston of a cylinder of a four-cylinder engine.
  • an inner channel 26 is arranged within the main channel 12 .
  • This inner passage 26 is adapted to direct fluid entering the inner passage 26 to at least one of the exit passages, such as exit passages 20 and 22 as shown.
  • the distribution device 10 also has a shut-off element 28 for shutting off a fluid flow entering the main channel 12 into the inner channel 26 .
  • the distribution device 10 can be designed in such a way that the fluid flow entering the inner channel 26 from the main channel 12 first washes around the inner channel 26 when passing through the main channel 12 .
  • this can be made possible in that the inner channel 26 is formed by a tube whose external dimensions, or rather its external diameter, is smaller than the dimensions of the main channel 12, in particular than its diameter.
  • the arrangement of the inner channel 26 at a distance from the wall of the main channel 12 can be made possible, as in the example shown, by fastening the inner channel 26 in the main channel 12 by means of suitable spacer elements 30 .
  • the embodiment shown in the figures shows an inner channel 26 which can be pressed into the main channel 12 in a simple manner.
  • the inner channel 26 can have branches 31 .
  • the inner duct 26 may be positioned in the main duct 12 such that the branches 31 are positioned at locations where the exit ducts to be shut off by the obturator 28 branch off from the main duct 12 . In the example shown, these are the outlet channels 20 and 22.
  • the shut-off device 28 can be inserted into the main channel 12 .
  • the shut-off element 28 can be arranged at least partially within the main channel 12, as in the example shown. This makes it possible for the fluid which penetrates from the main channel 12 into the inner channel 26 to first penetrate into a housing 32 of the shut-off element 28 .
  • the housing 32 can have openings 34 which allow the fluid to penetrate into the housing 32 .
  • the shut-off element 28 can have a shut-off element 36, as shown by way of example. As shown in the figures, the obturator 36 can move along the direction X to shut off the flow of fluid coming from the main channel 12 through the housing 32 of the obturator 28 into the inner channel 26 . This process is in the Figures 2 and 3 shown. In figure 2 the fluid can flow through the openings 34 into the inner channel 26 . In figure 3 the flow path is interrupted by the shut-off element 36 .
  • shut-off element 28 can be plugged onto the inner channel 26 as shown in the example.
  • shut-off element 28 and/or inner channel 26 can have suitable end regions 38, 40. These can have insertion bevels, for example, as shown, in order to make it easier for the shut-off element 28 and the inner channel 26 to be plugged together.
  • the shut-off element 28 can have a main channel 12 seal. This is realized by an O-ring 42 in the example shown. In this way, a simple seal between the obturator 28 and the inner channel 26 can be achieved.
  • the shut-off element 28 can be fastened in its intended position, for example with a detachable fastening element such as a screw. In this way, the shut-off element 28 can be removed and installed in a simple manner, for example for repair and/or maintenance purposes.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
EP21187730.3A 2020-08-27 2021-07-26 Dispositif de distribution destiné à la distribution des écoulements de fluides, ainsi que procédé de fonctionnement d'un véhicule automobile doté d'un moteur à combustion interne Active EP3964698B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020210855.2A DE102020210855A1 (de) 2020-08-27 2020-08-27 Verteileinrichtung zur Verteilung von Fluidströmen sowie Verfahren zum Betrieb eines Kraftfahrzeugs mit einem Verbrennungsmotor

Publications (2)

Publication Number Publication Date
EP3964698A1 true EP3964698A1 (fr) 2022-03-09
EP3964698B1 EP3964698B1 (fr) 2024-03-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP21187730.3A Active EP3964698B1 (fr) 2020-08-27 2021-07-26 Dispositif de distribution destiné à la distribution des écoulements de fluides, ainsi que procédé de fonctionnement d'un véhicule automobile doté d'un moteur à combustion interne

Country Status (4)

Country Link
US (1) US11384720B2 (fr)
EP (1) EP3964698B1 (fr)
CN (1) CN114109576B (fr)
DE (1) DE102020210855A1 (fr)

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US11384720B2 (en) 2022-07-12
US20220065205A1 (en) 2022-03-03
CN114109576B (zh) 2024-07-30
CN114109576A (zh) 2022-03-01

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