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1. WO2022008602 - NEGATIVE PRESSURE GENERATOR AND FUEL TANK VENTILATION

Publication Number WO/2022/008602
Publication Date 13.01.2022
International Application No. PCT/EP2021/068854
International Filing Date 07.07.2021
IPC
F02M 25/08 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
25Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
08adding fuel vapours drawn from engine fuel reservoir
F02M 35/10 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
MSUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
35Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
10Air intakes; Induction systems
B29C 65/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
65Joining of preformed parts; Apparatus therefor
B29C 45/00 2006.1
BPERFORMING OPERATIONS; TRANSPORTING
29WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
CSHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
45Injection moulding, i.e. forcing the required volume of moulding material through a nozzle into a closed mould; Apparatus therefor
F04F 5/20 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
5Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow
14the inducing fluid being elastic fluid
16displacing elastic fluids
20for evacuating
F04F 5/46 2006.1
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
FPUMPING OF FLUID BY DIRECT CONTACT OF ANOTHER FLUID OR BY USING INERTIA OF FLUID TO BE PUMPED; SIPHONS
5Jet pumps, i.e. devices in which fluid flow is induced by pressure drop caused by velocity of another fluid flow
44Component parts, details, or accessories not provided for in, or of interest apart from, groups F04F5/02-F04F5/42148
46Arrangements of nozzles
Applicants
  • WOCO INDUSTRIETECHNIK GMBH [DE]/[DE]
Inventors
  • NEUMANN, Jan, Felix
  • SCHÄFERS, Caroline
  • ANDEL, David
Agents
  • SCHMID, Nils, T., F.,
Priority Data
10 2020 118 017.908.07.2020DE
Publication Language German (de)
Filing Language German (DE)
Designated States
Title
(DE) UNTERDRUCKGENERATOR UND KRAFTSTOFFTANKENTLÜFTUNG
(EN) NEGATIVE PRESSURE GENERATOR AND FUEL TANK VENTILATION
(FR) GÉNÉRATEUR DE PRESSION NÉGATIVE ET VENTILATION DE RÉSERVOIR DE CARBURANT
Abstract
(DE) Die vorliegende Erfindung betrifft einen Unterdruckgenerator zur Kraftstofftankentlüftung, umfassend einen Fluiddurchführkörper bestehend aus wenigstens zwei Kunststoffteilen, insbesondere Kunststoffschalen, wobei der Fluiddurchführkörper einen Überdruckleitungsabschnitt, der mit einer Überdruckquelle, insbesondere stromabwärts eines Turboladers und stromabwärts einer Drosselklappe eines Kraftfahrzeugmotors, verbindbar ist, einen Ansaugleitungsabschnitt, der mit dem Kraftstofftank verbindbar ist, und einen Abgabeleitungsabschnitt aufweist, der mit einem Kraftfahrzeugmotor verbindbar ist, und eine Venturidüse, in die der Überdruckleitungsabschnitt mündet, wobei der Ansaugleitungsabschnitt in eine Unterdruckseite der Venturidüse mündet, wobei zumindest die Venturidüse aus einem Kunststoffstück gefertigt ist.
(EN) The present invention relates to a negative pressure generator for fuel tank ventilation, comprising a fluid feed-through body consisting of at least two plastics parts, in particular plastics casings, wherein the fluid feed-through body comprises an overpressure line portion, which can be connected to an overpressure source, in particular downstream of a turbocharger and downstream of a throttle flap of a motor vehicle engine, an intake line portion, which can be connected to the fuel tank, and an output line portion, which can be connected to a motor vehicle engine, and a Venturi nozzle, into which the overpressure line portion opens, wherein the intake line portion opens into a negative pressure side of the Venturi nozzle, wherein at least the Venturi nozzle is made of one plastics piece.
(FR) La présente invention concerne un générateur de pression négative destiné à la ventilation d'un réservoir de carburant, comprenant un corps de passage de fluide constitué d'au moins deux parties en plastique, en particulier des boîtiers en plastique, le corps de passage de fluide comprenant une partie conduite de surpression, qui peut être reliée à une source de surpression, en particulier en aval d'un turbocompresseur et en aval d'un volet d'étranglement d'un moteur de véhicule automobile, une partie conduite d'admission, qui peut être reliée au réservoir de carburant, et une partie conduite de sortie, qui peut être reliée à un moteur de véhicule automobile, et une buse Venturi, dans laquelle la partie conduite de surpression s'ouvre, la partie conduite d'admission débouchant dans un côté pression négative de la buse Venturi, au moins la buse Venturi étant constituée d'une seule pièce en plastique.
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