EP0337861A1 - Device for removing water from gasoil for a diesel engine - Google Patents

Device for removing water from gasoil for a diesel engine Download PDF

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Publication number
EP0337861A1
EP0337861A1 EP89400970A EP89400970A EP0337861A1 EP 0337861 A1 EP0337861 A1 EP 0337861A1 EP 89400970 A EP89400970 A EP 89400970A EP 89400970 A EP89400970 A EP 89400970A EP 0337861 A1 EP0337861 A1 EP 0337861A1
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EP
European Patent Office
Prior art keywords
water
switch
engine
vehicle
receptacle
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
EP89400970A
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German (de)
French (fr)
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EP0337861B1 (en
Inventor
Jean Pages
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.)
Safran Electrical and Power SAS
Original Assignee
Labinal SA
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Publication date
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Publication of EP0337861B1 publication Critical patent/EP0337861B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D33/00—Controlling delivery of fuel or combustion-air, not otherwise provided for
    • F02D33/003—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge
    • F02D33/006—Controlling the feeding of liquid fuel from storage containers to carburettors or fuel-injection apparatus ; Failure or leakage prevention; Diagnosis or detection of failure; Arrangement of sensors in the fuel system; Electric wiring; Electrostatic discharge depending on engine operating conditions, e.g. start, stop or ambient conditions
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/0047—Layout or arrangement of systems for feeding 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/24—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means
    • F02M37/26—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means with water detection means
    • F02M37/28—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means with water detection means with means activated by the presence of water, e.g. alarms or means for automatic drainage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B3/00—Engines characterised by air compression and subsequent fuel addition
    • F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T137/00—Fluid handling
    • Y10T137/8158—With indicator, register, recorder, alarm or inspection means
    • Y10T137/8342—Liquid level responsive indicator, recorder or alarm

Definitions

  • the invention relates to devices intended for removing the water present in the diesel fueling a vehicle diesel engine.
  • a water separator member mounted on the diesel fuel supply circuit of the engine, a receptacle for water separated from diesel fuel, and means for detecting overshoots of an alert threshold predetermined by the volume of separated water collected in said receptacle.
  • the detection means are arranged so as to alert the driver of the vehicle when the volume of water exceeded is observed.
  • This alert manifests itself in particular by the lighting of a warning light on the vehicle dashboard.
  • the driver must then empty the receptacle loaded with water so that the separator can continue its work effectively, which is conditioned by a sufficient capacity of the receptacle to collect the separated water.
  • the Applicant has found that the instructions for use of diesel engines prescribe, during each cold start of such an engine, a special operating phase, called "preheating", corresponding to the electrical supply of the spark plugs. preheating, during which both of the above conditions are met: - energization of the vehicle electrical system, - lack of engine operation.
  • the invention consists in exploiting these privileged periods of preheating to ensure the automatic emptying of the receptacle using an electric pump.
  • the water removal devices of the above kind according to the invention also comprise an electric drain pump, the inlet of which is connected to the receptacle above and the outlet, to a evacuation pipe fitted with a non-return valve and an electrical excitation circuit for this pump comprising an electrical switch associated with the above detection means, which are arranged so as to close it automatically when the alert threshold is reached or exceeded by the volume of water collected in the receptacle, and they are essentially characterized in that the electrical excitation circuit of the pump comprises a second electrical switch mounted in series with the first, arranged so as to be closed when the vehicle's on-board circuit is powered up, and associated with means capable of automatically neutralizing its closing at the latest at the time of engine starting.
  • the means for neutralizing the closing of the second switch are synchronized with those generally provided for signaling the end of the engine preheating periods
  • the means for neutralizing the closing of the second switch comprise a third switch in series with the first two, -
  • the means for neutralizing the closing of the second switch are delay means.
  • the invention includes, apart from these main provisions, certain other provisions which are preferably used at the same time and which will be more explicitly discussed below.
  • Figures 1 and 2 of this drawing show a device established according to the invention for removing water contained in the diesel fueling a vehicle diesel engine, respectively during normal vehicle operation and during a water change, engine stopped.
  • the water elimination device comprises: - a diesel tank 1 G, a supply line 2 connecting this tank 1 to the engine M of the vehicle, a decanter 3 capable of separating the water E contained in the diesel fuel G, a diesel drive pump 4, a diesel injection pump 5 into the different cylinders of the engine M, - And a line 6 for returning to the tank 1 of the excess diesel which has not been consumed in the engine.
  • the water E which is heavier than the gas oil G, collects at the bottom of the decanter 3, which is in particular in the form of a receptacle or tank elongated vertically.
  • a float 7 whose specific weight is between that of water and that of diesel oil floats on the surface S separating these two liquids in the tank 3.
  • This float 7 is arranged so as to actuate by magnetic means the mobile electrical contact of a switch 8 outside said tank.
  • This actuation is such that the switch 8 is closed (see arrow A in FIG. 2) when a predetermined level is reached or exceeded in the upward direction by the surface S.
  • this closure results in a display such as the lighting of an indicator light on the vehicle dashboard.
  • an electric drain pump 9 is used, the inlet of which is connected to the base of the tank 3 and the outlet of which is connected to the open air at 10 by means of a non-return valve. 11 tared appropriately.
  • Said non-return valve 11 must be chosen so as to normally ensure a strictly sealed closure of the outlet of the pump 9, even in the long term.
  • the electrical supply to the pump 9 is carried out using a power circuit shown diagrammatically by the rectangle 16 and generally comprising the vehicle battery as well as a control relay.
  • the excitation circuit 18 of this relay comprises, in addition, in addition to the vehicle battery 12, at least two electrical switches in series, namely: a first switch which is none other than the switch 8 described above, - And a second switch 13, the closing of which is automatically controllable by the ignition key 14 of the vehicle, when this key is operated so as to energize at least part of the on-board circuit of this vehicle (arrow B in FIG. 2 ).
  • safety means are provided to neutralize the closing of the second switch 13 - that is to say to open this switch or mount a third open switch in series on it - at least when the vehicle engine M is running .
  • the duration of effective "closing" of the second switch 13 must be limited to a period after the powering up of the on-board circuit of the vehicle and during which the engine M of this vehicle does not operate, this period can be relatively short, for example of the order of ten seconds only.
  • the invention takes advantage of the existence of these preheating periods to effect the desired automatic emptying.
  • the safety means can then be the time delay means, generally controlled by the temperature of an appropriate element, which are already provided to prohibit the starting of a cold diesel engine and to authorize such starting only after preheating of this engine, said means being triggered by the closing of switch 13 itself.
  • the delayed opening considered is automatically ensured at least at the moment when the driver starts the engine of the vehicle.
  • the above-mentioned delay or safety period is then that which separates the subsequent feeds from the key 14 in these two positions, the safety or delay means then being formed by the driver of the vehicle himself, who is placed in waiting posture with the mission of monitoring the display of the end of the security period.
  • the first switch 8 is arranged not only so as to be closed when the separation surface S in the tank 3 exceeds a predetermined level, as explained above, but also so as to be opened again when this surface reaches in going down a level corresponding to the end of the draining of water E.
  • the water level in the tank 3 is below the critical threshold so that the switch 8 remains open and the drain device is neutralized.
  • the switch 8 closes, as symbolized by the arrow A in FIG. 2.
  • this start-up involves a preheating period during which the switch 13 is closed, as well as the switch 15 if the latter is provided.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Vehicle Engines Or Engines For Specific Uses (AREA)
  • Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
  • Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

In order to remove the water (E) present in gas oil (G) for a Diesel engine (M) in a vehicle, use is made of a water separating apparatus (3), with means (7) for detecting when the volume of water separated exceeds an alarm threshold and an electric pump (9) capable of draining this water through a non-return valve (11), the said pump being activated from the battery (12) of the vehicle only during engine preheating periods and when the abovementioned alarm threshold is exceeded. <IMAGE>

Description

L'invention est relative aux dispositifs desti­nés à éliminer l'eau présente dans le gazole alimentant un moteur Diesel de véhicule.The invention relates to devices intended for removing the water present in the diesel fueling a vehicle diesel engine.

Elle concerne plus particulièrement, parmi ces dispositifs, ceux qui comprennent un organe séparateur d'eau monté sur le circuit d'alimentation du moteur en gazole, un réceptacle pour l'eau séparée à partir du gazole, et des moyens pour détecter les dépassements d'un seuil d'alerte prédéterminé par le volume de l'eau séparée recueilli dans ledit réceptacle.It relates more particularly, among these devices, those which include a water separator member mounted on the diesel fuel supply circuit of the engine, a receptacle for water separated from diesel fuel, and means for detecting overshoots of an alert threshold predetermined by the volume of separated water collected in said receptacle.

Dans les modes de réalisation connus de ces dis­positifs d'élimination, les moyens de détection sont agencés de façon à alerter le conducteur du véhicule lors des dépassements de volume d'eau constatés.In the known embodiments of these elimination devices, the detection means are arranged so as to alert the driver of the vehicle when the volume of water exceeded is observed.

Cette alerte se manifeste notamment par l'allu­mage d'un voyant lumineux au tableau de bord du véhi­cule.This alert manifests itself in particular by the lighting of a warning light on the vehicle dashboard.

Le conducteur doit alors vidanger le réceptacle chargé d'eau afin que le séparateur puisse poursuivre efficacement son travail, lequel est conditionné par une capacité suffisante du réceptacle à recueillir l'eau séparée.The driver must then empty the receptacle loaded with water so that the separator can continue its work effectively, which is conditioned by a sufficient capacity of the receptacle to collect the separated water.

Cette formule présente de nombreux inconvé­nients.This formula has many disadvantages.

En effet, les manipulations nécessaires pour vi­danger l'eau du réceptacle sont fastidieuses et salis­santes, vu notamment que ce réceptacle est peu accessi­bles.Indeed, the manipulations necessary to drain the water from the receptacle are tedious and messy, especially since this receptacle is not very accessible.

En outre il est fréquent que, précisément en raison des difficultés signalées, l'usager diffère la vidange requise à partir du début de l'alerte, ce qui risque d'affecter la qualité de la purification du gazole en eau, voire de réintroduire de l'eau dans le gazole si le volume d'eau occupant le réceptacle devient excédentaire.In addition, it is frequent that, precisely because of the difficulties reported, the user postpones the required emptying from the start of the alert, which may affect the quality of the purification of diesel fuel into water, or even reintroduce water in the diesel if the volume of water occupying the receptacle becomes excess.

Il n'était guère envisagé jusqu'à ce jour de rendre automatique la vidange en question à l'aide d'une pompe entraînée électriquement.Until now, little thought had been given to making the emptying in question automatic using an electrically driven pump.

Une telle proposition a certes été faite dans le document DE-A-2 436 080, mais elle n'a pas débouché sur des réalisations satisfaisantes et l'on peut penser que c'était en particulier pour la raison suivante : le cir­cuit électrique de bord d'un véhicule, capable de four­nir l'énergie électrique requise pour alimenter une telle pompe, n'est en général mis sous tension, à l'aide d'une clé de contact, que lorsque le moteur fonctionne ; or il est impératif que le moteur ne fonctionne pas lorsque la vidange du réceptacle ci-dessus est effec­tuée, afin d'éviter tout risque d'aspiration, par ce moteur, de l'eau qui est alors mise en contact avec l'air libre, voire de cet air lui-même.Such a proposal was certainly made in document DE-A-2 436 080, but it did not lead to satisfactory achievements and one can think that it was in particular for the following reason: the electric circuit of on board a vehicle capable of supplying the electrical energy required to supply such a pump, is generally only energized, using an ignition key, when the engine is running; however it is imperative that the engine does not run when the emptying of the above receptacle is carried out, in order to avoid any risk of aspiration, by this engine, of the water which is then brought into contact with the open air , or even this air itself.

Cela étant, la demanderesse a constaté que les modes d'emploi des moteurs Diesel prescrivent, lors de chaque démarrage à froid d'un tel moteur, une phase opératoire spéciale, dite "de préchauffage", correspon­dant à l'alimentation électrique des bougies de pré­chauffage, au cours de laquelle sont remplies à la fois les deux conditions ci-dessus :
- mise sous tension du circuit électrique de bord du véhicule,
- absence de fonctionnement du moteur.That said, the Applicant has found that the instructions for use of diesel engines prescribe, during each cold start of such an engine, a special operating phase, called "preheating", corresponding to the electrical supply of the spark plugs. preheating, during which both of the above conditions are met:
- energization of the vehicle electrical system,
- lack of engine operation.

L'invention consiste à exploiter ces périodes privilégiées de préchauffage pour assurer la vidange automatique du réceptacle à l'aide d'une pompe électri­que.The invention consists in exploiting these privileged periods of preheating to ensure the automatic emptying of the receptacle using an electric pump.

Plus précisément les dispositifs d'élimination d'eau du genre ci-dessus selon l'invention comprennent encore une pompe électrique de vidange dont l'entrée est connectée au réceptacle ci-dessus et la sortie, à une conduite d'évacuation équipée d'un clapet anti-retour et un circuit d'excitation électrique de cette pompe com­prenant un interrupteur électrique associé aux moyens de détection ci-dessus, lesquels sont agencés de façon à le fermer automatiquement lorsque le seuil d'alerte est atteint ou dépassé par le volume d'eau recueilli dans le réceptacle, et ils sont essentiellement caractérisés en ce que le circuit d'excitation électrique de la pompe comprend un second interrupteur électrique monté en série avec le premier, agencé de façon à être fermé lors de la mise sous tension du circuit de bord du véhicule, et associé à des moyens propres à neutraliser automati­quement sa fermeture au plus tard à l'instant du démar­rage du moteur.More precisely, the water removal devices of the above kind according to the invention also comprise an electric drain pump, the inlet of which is connected to the receptacle above and the outlet, to a evacuation pipe fitted with a non-return valve and an electrical excitation circuit for this pump comprising an electrical switch associated with the above detection means, which are arranged so as to close it automatically when the alert threshold is reached or exceeded by the volume of water collected in the receptacle, and they are essentially characterized in that the electrical excitation circuit of the pump comprises a second electrical switch mounted in series with the first, arranged so as to be closed when the vehicle's on-board circuit is powered up, and associated with means capable of automatically neutralizing its closing at the latest at the time of engine starting.

Dans des modes de réalisation préférés, on a re­cours en outre à l'une et/ou à l'autre des dispositions suivantes :
- les moyens pour neutraliser la fermeture du second interrupteur sont synchronisés avec ceux généralement prévus pour signaler la fin des périodes de préchauf­fage du moteur,
- les moyens pour neutraliser la fermeture du second interrupteur comprennent un troisième interrupteur en série avec les deux premiers,
- dans un dispositif selon l'alinéa précédent, les mo­yens pour neutraliser la fermeture du second interrup­teur sont des moyens de temporisation.In preferred embodiments, use is also made of one and / or the other of the following arrangements:
the means for neutralizing the closing of the second switch are synchronized with those generally provided for signaling the end of the engine preheating periods,
the means for neutralizing the closing of the second switch comprise a third switch in series with the first two,
- In a device according to the preceding paragraph, the means for neutralizing the closing of the second switch are delay means.

L'invention comprend, mises à part ces disposi­tions principales, certaines autres dispositions qui s'utilisent de préférence en même temps et dont il sera plus explicitement question ci-après.The invention includes, apart from these main provisions, certain other provisions which are preferably used at the same time and which will be more explicitly discussed below.

Dans ce qui suit, l'on va décrire un mode de réalisation de l'invention en se référant au dessin ci-­annexé d'une manière bien entendu non limitative.In what follows, an embodiment of the invention will be described with reference to the attached drawing in a manner which is of course not limiting.

Les figures 1 et 2, de ce dessin, montrent un dispositif établi selon l'invention pour éliminer l'eau contenue dans le gazole alimentant un moteur Diesel de véhicule, respectivement au cours du fonctionnement nor­mal du véhicule et au cours d'une vidange d'eau, moteur arrêté.Figures 1 and 2 of this drawing show a device established according to the invention for removing water contained in the diesel fueling a vehicle diesel engine, respectively during normal vehicle operation and during a water change, engine stopped.

D'une façon connue en soi, le dispositif d'éli­mination d'eau comprend :
- un réservoir 1 de gazole G,
- une conduite d'alimentation 2 reliant ce réservoir 1 au moteur M du véhicule,
- un décanteur 3 propre à séparer l'eau E contenue dans le gazole G,
- un pompe 4 d'entraînement du gazole,
- une pompe 5 d'injection du gazole dans les différents cylindres du moteur M,
- et une conduite 6 de retour au réservoir 1 de l'excé­dent de gazole n'ayant pas été consommé dans le mo­teur.In a manner known per se, the water elimination device comprises:
- a diesel tank 1 G,
a supply line 2 connecting this tank 1 to the engine M of the vehicle,
a decanter 3 capable of separating the water E contained in the diesel fuel G,
a diesel drive pump 4,
a diesel injection pump 5 into the different cylinders of the engine M,
- And a line 6 for returning to the tank 1 of the excess diesel which has not been consumed in the engine.

L'eau E, que est plus lourde que le gazole G, se rassemble au fond du décanteur 3, qui se présente notam­ment sous la forme d'un réceptacle ou bac allongé verti­calement.The water E, which is heavier than the gas oil G, collects at the bottom of the decanter 3, which is in particular in the form of a receptacle or tank elongated vertically.

Un flotteur 7 dont le poids spécifique est com­pris entre celui de l'eau et celui du gazole flotte sur la surface S séparant ces deux liquides dans le bac 3.A float 7 whose specific weight is between that of water and that of diesel oil floats on the surface S separating these two liquids in the tank 3.

Ce flotteur 7 est agencé de façon à actionner par voie magnétique le contact électrique mobile d'un interrupteur 8 extérieur audit bac.This float 7 is arranged so as to actuate by magnetic means the mobile electrical contact of a switch 8 outside said tank.

A cet effet, il est avantageusement porteur d'un petit aimant permanent susceptible d'agir sur ledit contact mobile à travers une portion amagnétique étanche de la paroi du bac 3.To this end, it advantageously carries a small permanent magnet capable of acting on said movable contact through a sealed non-magnetic portion of the wall of the container 3.

Cet actionnement est tel que l'interrupteur 8 soit fermé (voir flèche A sur la figure 2) lorsqu'un ni­veau prédéterminé est atteint ou dépassé dans le sens ascendant par la surface S.This actuation is such that the switch 8 is closed (see arrow A in FIG. 2) when a predetermined level is reached or exceeded in the upward direction by the surface S.

Dans les modes de réalisation connus, cette fer­meture se traduit par un affichage tel que l'allumage d'un voyant lumineux au tableau bord du véhicule.In known embodiments, this closure results in a display such as the lighting of an indicator light on the vehicle dashboard.

Dans le cas de la présente invention, on ne se contente plus d'alerter le conducteur du véhicule sur la nécessité de son intervention : on procède automatique­ment à la vidange nécessaire de l'eau E recueillie dans le bac 3 lorsque le niveau de la surface S est atteint ou dépassé, c'est-à-dire lorsque le volume de l'eau sé­parée et recueillie dans le bac atteint ou dépasse un seuil prédéterminé.In the case of the present invention, it is no longer sufficient to alert the driver of the vehicle to the need for his intervention: we automatically proceed to the necessary emptying of the water E collected in the tank 3 when the level of the surface S is reached or exceeded, that is to say when the volume of water separated and collected in the tank reaches or exceeds a predetermined threshold.

A cet effet, on a recours à une pompe électrique de vidange 9 dont l'entrée est raccordée à la base du bac 3 et dont la sortie est raccordée à l'air libre en 10 par l'intermédiaire d'un clapet anti-retour 11 taré de façon appropriée.For this purpose, an electric drain pump 9 is used, the inlet of which is connected to the base of the tank 3 and the outlet of which is connected to the open air at 10 by means of a non-return valve. 11 tared appropriately.

Ledit clapet anti-retour 11 doit être choisi de façon à assurer normalement une obturation rigoureuse­ment étanche de la sortie de la pompe 9, même à long terme.Said non-return valve 11 must be chosen so as to normally ensure a strictly sealed closure of the outlet of the pump 9, even in the long term.

La pression de tarage de ce clapet est bien entendu réglée en fonction des besoins.The setting pressure of this valve is of course adjusted as required.

Sa valeur dépend en particulier de la position de montage de la pompe d'alimentation 4 sur la conduite 2, ladite valeur étant par exemple de 0,5 bar pour le montage illustré et étant supérieure --et par exemple égale à 2 bars-- dans le cas où ladite pompe serait mon­tée plutôt en amont du bac 3 qu'en aval de ce bac.Its value depends in particular on the mounting position of the feed pump 4 on the pipe 2, said value being for example 0.5 bar for the illustrated mounting and being greater - and for example equal to 2 bars - in the case where said pump would be mounted rather upstream of tank 3 than downstream of this tank.

L'alimentation électrique de la pompe 9 est effectuée à l'aide d'un circuit de puissance schématisé par le rectangle 16 et comprenant en général la batterie du véhicule ainsi qu'un relais de commande.The electrical supply to the pump 9 is carried out using a power circuit shown diagrammatically by the rectangle 16 and generally comprising the vehicle battery as well as a control relay.

Le circuit d'excitation 18 de ce relais com­prend, quant à lui, en plus de la batterie 12 du véhi­cule, au moins deux interrupteurs électriques en série, savoir :
- un premier interrupteur qui n'est autre que l'in­terrupteur 8 ci-dessus décrit,
- et un second interrupteur 13 dont la fermeture est commandable automatiquement par la clé de contact 14 du véhicule, lorsque cette clé est manoeuvrée de ma­nière à mettre sous tension au moins une partie du circuit de bord de ce véhicule (flèche B sur la figure 2).The excitation circuit 18 of this relay comprises, in addition, in addition to the vehicle battery 12, at least two electrical switches in series, namely:
a first switch which is none other than the switch 8 described above,
- And a second switch 13, the closing of which is automatically controllable by the ignition key 14 of the vehicle, when this key is operated so as to energize at least part of the on-board circuit of this vehicle (arrow B in FIG. 2 ).

En outre des moyens de sécurité sont prévus pour neutraliser la fermeture du second interrupteur 13 --c'est-à-dire pour ouvrir cet interrupteur ou monter en série sur lui un troisième interrupteur ouvert-- au moins lorsque le moteur M du véhicule fonctionne.In addition, safety means are provided to neutralize the closing of the second switch 13 - that is to say to open this switch or mount a third open switch in series on it - at least when the vehicle engine M is running .

Il importe en effet que ce moteur demeure arrêté lorsque l'eau est vidangée hors du bac 3 pour écarter tout risque d'aspiration d'eau et/ou d'air dans le mo­teur.It is indeed important that this engine remains stopped when the water is drained from tank 3 to avoid any risk of water and / or air being drawn into the engine.

En d'autres termes, la durée de "fermeture" efficace du second interrupteur 13 doit être limitée à une période postérieure à la mise sous tension du cir­cuit de bord du véhicule et au cours de laquelle le mo­teur M de ce véhicule ne fonctionne pas, période qui peut être relativement courte, par exemple de l'ordre de dix secondes seulement.In other words, the duration of effective "closing" of the second switch 13 must be limited to a period after the powering up of the on-board circuit of the vehicle and during which the engine M of this vehicle does not operate, this period can be relatively short, for example of the order of ten seconds only.

Or, comme on le sait, des périodes répondant à cette double exigence de mise sous tension et d'arrêt du moteur sont précisément prévues lors des démarrages à froid des moteurs Diesel, en vue de préchauffer les chambres de combustion de ces moteurs à l'aide de bou­gies spéciales.However, as we know, periods meeting this double requirement of powering up and stopping the engine are precisely provided during cold starts of diesel engines, in order to preheat the combustion chambers of these engines at using special candles.

L'invention met à profit l'existence de ces périodes de préchauffage pour effectuer les vidanges automatiques désirées.The invention takes advantage of the existence of these preheating periods to effect the desired automatic emptying.

Les moyens de sécurité peuvent alors être les moyens de temporisation, généralement asservis à la tem­pérature d'un élément approprié, qui sont déjà prévus pour interdire le démarrage d'un moteur Diesel à froid et pour n'autoriser un tel démarrage qu'après préchauf­fage de ce moteur, lesdits moyens étant déclenchés par la fermeture même de l'interrupteur 13.The safety means can then be the time delay means, generally controlled by the temperature of an appropriate element, which are already provided to prohibit the starting of a cold diesel engine and to authorize such starting only after preheating of this engine, said means being triggered by the closing of switch 13 itself.

Ils pourraient également être constitués très simplement par un circuit de retard indépendant propre à différer l'ouverture d'un troisième interrupteur 15 mon­té en série sur les deux premiers 8 et 13 dans le cir­cuit 17, durant un retard donné compris à l'intérieur de la période de préchauffage et commençant à chaque ferme­ture de l'interrupteur 13.They could also be very simply constituted by an independent delay circuit capable of delaying the opening of a third switch 15 mounted in series on the first two 8 and 13 in the circuit 17, during a given delay included within the preheating period and starting each time switch 13 is closed.

Dans chaque cas, au terme de la période de "pré­chauffage" ou du retard indépendant, la fermeture de l'interrupteur 13 est neutralisée, soit par son ouver­ture propre, soit par ouverture de l'interrupteur 15.In each case, at the end of the "preheating" period or of the independent delay, the closing of the switch 13 is neutralized, either by its own opening, or by opening of the switch 15.

Dans le cas de l'interrupteur 15, l'ouverture différée en question est commandée automatiquement à l'expiration de la période considérée.In the case of switch 15, the delayed opening in question is controlled automatically at the end of the period considered.

Dans le cas de l'interrupteur 13, l'ouverture différée est laissée à l'initiative du conducteur du véhicule, la fin de la période en question étant alors signalée à son attention, notamment par allumage d'un voyant lumineux au tableau de bord du véhicule, ainsi qu'il est bien connu pour signaler le terme des périodes du préchauffage des moteurs Diesel.In the case of switch 13, the delayed opening is left to the initiative of the driver of the vehicle, the end of the period in question then being signaled to his attention, in particular by lighting of a warning light on the dashboard of the vehicle, as is well known for signaling the end of the preheating periods of diesel engines.

Il est à noter toutefois que, même dans ce cas, l'ouverture différée considérée est automatiquement assurée au moins à l'instant où le conducteur met en route le moteur du véhicule.It should be noted however that, even in this case, the delayed opening considered is automatically ensured at least at the moment when the driver starts the engine of the vehicle.

Dans un tel cas, par exemple, la fermeture du second interrupteur 13, puis son ouverture, sont assu­rées respectivement par les amenées de la clé de contact 14, après son introduction axiale dans son logement, en deux positions stables successives de la course angulai­re, savoir :
- un première position correspondant à la mise sous tension d'une partie au moins du circuit de bord du véhicule (figure 2),
- et une seconde position correspondant au démarrage ou au fonctionnement du moteur (figure 1).In such a case, for example, the closing of the second switch 13, then its opening, are ensured respectively by the leads of the ignition key 14, after its axial introduction into its housing, in two successive stable positions of the angular travel, know :
- a first position corresponding to the placing under voltage of at least part of the vehicle's on-board circuit (Figure 2),
- And a second position corresponding to the starting or the operation of the engine (Figure 1).

La période de temporisation ou sécurité ci-­dessus évoquée est alors celle qui sépare les amenées subséquentes de la clé 14 en ces deux positions, les moyens de sécurité ou de temporisation étant alors for­més par le conducteur du véhicule lui-même, qui est pla­cé en posture d'attente avec mission de surveiller l'af­fichage de la fin de la période de sécurité.The above-mentioned delay or safety period is then that which separates the subsequent feeds from the key 14 in these two positions, the safety or delay means then being formed by the driver of the vehicle himself, who is placed in waiting posture with the mission of monitoring the display of the end of the security period.

Le premier interrupteur 8 est agencé non seule­ment de façon à être fermé lorsque la surface de sépara­tion S dans le bac 3 dépasse un niveau prédéterminé, ainsi qu'exposé ci-dessus, mais aussi de façon à être ouvert à nouveau lorsque cette surface atteint en des­cendant un niveau correspondant à la fin de la vidange de l'eau E.The first switch 8 is arranged not only so as to be closed when the separation surface S in the tank 3 exceeds a predetermined level, as explained above, but also so as to be opened again when this surface reaches in going down a level corresponding to the end of the draining of water E.

Le fonctionnement du dispositif d'élimination d'eau ci-dessus décrit est le suivant.The operation of the water removal device described above is as follows.

Dans le cas le plus général, le niveau de l'eau dans le bac 3 est inférieur au seuil critique de sorte que l'interrupteur 8 demeure ouvert et que le dispositif de vidange est neutralisé.In the most general case, the water level in the tank 3 is below the critical threshold so that the switch 8 remains open and the drain device is neutralized.

Le fonctionnement du moteur M est alors normal lorsqu'il est alimenté en gazole selon les flèches visi­bles sur la figure 1.The operation of the engine M is then normal when it is supplied with diesel fuel according to the arrows visible in FIG. 1.

Lorsque le seuil critique est atteint par le ni­veau de la surface S, l'interrupteur 8 se ferme, comme symbolisé par la flèche A sur la figure 2.When the critical threshold is reached by the level of the surface S, the switch 8 closes, as symbolized by the arrow A in FIG. 2.

Mais la vidange de l'eau hors du bac 3 n'est pas assurée immédiatement pour autant car, lorsque le moteur fonctionne, l'interrupteur 13 est ouvert.However, the emptying of the water out of the tank 3 is not immediately ensured since, when the engine is running, the switch 13 is open.

La vidange automatique n'intervient qu'au cours de la période de démarrage à froid du moteur consécutive à ladite fermeture de l'interrupteur 8.The automatic emptying only takes place during the cold start period of the engine following said closing of the switch 8.

En effet, comme exposé plus haut, ce démarrage fait intervenir une période de préchauffage au cours de laquelle l'interrupteur 13 est fermé, ainsi que l'inter­rupteur 15 si celui-ci est prévu.Indeed, as explained above, this start-up involves a preheating period during which the switch 13 is closed, as well as the switch 15 if the latter is provided.

Dans ces conditions, le relais du circuit 16 est actionné, ce qui ferme ce circuit, la pompe de vidange 9 est mise en rotation et l'eau E est vidangée hors du bac 3, en 10, à travers le clapet anti-retour 11.Under these conditions, the relay of circuit 16 is actuated, which closes this circuit, the drain pump 9 is rotated and the water E is drained out of tank 3, at 10, through the non-return valve 11 .

La fin de la vidange se traduit par une nouvelle ouverture de l'interrupteur 8, ce qui arrête la pompe 9 jusqu'à la vidange suivante.The end of the emptying results in a new opening of the switch 8, which stops the pump 9 until the next emptying.

Bien entendu, si le moteur du véhicule est mis en route avant la fin de la vidange, l'interrupteur 13 est immédiatement ouvert et la vidange, interrompue.Of course, if the vehicle engine is started before the end of the emptying, the switch 13 is immediately opened and the emptying is interrupted.

En suite de quoi, et quel que soit le mode de réalisation adopté, on obtient finalement un dispositif permettant la vidange automatique de l'eau séparée du gazole, dispositif dont la constitution, le fonctionne­ment et les avantages, notamment l'automaticité et la sécurité, résultent suffisamment de ce qui précède.Following this, and whatever the embodiment adopted, there is finally obtained a device allowing the automatic emptying of the water separated from the diesel, device whose constitution, operation and advantages, in particular automaticity and safety. , result sufficiently from the above.

Comme il va de soi, et comme il résulte d'ail­leurs déjà de ce que précède, l'invention ne se limite nullement à ceux de ses modes d'application et de réali­sation qui ont été plus spécialement envisagés ; elle en embrasse, au contraire, toutes les variantes.As is obvious, and as it already follows from the foregoing, the invention is in no way limited to those of its modes of application and embodiments which have been more especially envisaged; on the contrary, it embraces all its variants.

Claims (4)

1. Dispositif pour éliminer l'eau (E) présente dans le gazole (G) alimentant un moteur Diesel (M) de véhicule, comprenant un organe séparateur d'eau monté sur le circuit d'alimentation du moteur en gazole, un réceptable (3) pour l'eau séparée à partir du gazole, des moyens (7) pour détecter les dépassements d'un seuil d'alerte prédéterminé par le volume de l'eau séparée recueilli dans ledit réceptacle, une pompe électrique de vidange (9) dont l'entrée est connectée au réceptacle et la sortie, à une conduite d'évacuation (10) équipée d'un clapet anti-retour (11) et un circuit d'excitation élec­trique de cette pompe comprenant un interrupteur élec­trique (8) associé aux moyens de détection ci-dessus (7), lesquels sont agencés de façon à le fermer auto­matiquement lorsque le seuil d'alerte est atteint ou dépassé par le volume d'eau recueilli dans le récepta­cle, caractérisé en ce que ledit circuit d'excitation électrique de la pompe comprend un second interrupteur électrique (13) monté en série avec le premier (8), agencé de façon à être fermé lors de la mise sous ten­sion du circuit de bord du véhicule, et associé à des moyens propres à neutraliser automatiquement sa ferme­ture au plus tard à l'instant du démarrage du moteur.1. Device for eliminating the water (E) present in the diesel fuel (G) supplying a diesel engine (M) of a vehicle, comprising a water separating member mounted on the diesel fuel supply circuit of the engine, a receptacle ( 3) for water separated from diesel, means (7) for detecting exceedances of an alert threshold predetermined by the volume of separated water collected in said receptacle, an electric drain pump (9) the inlet of which is connected to the receptacle and the outlet, to a discharge pipe (10) equipped with a non-return valve (11) and an electrical excitation circuit of this pump comprising an associated electrical switch (8) to the above detection means (7), which are arranged so as to close it automatically when the alert threshold is reached or exceeded by the volume of water collected in the receptacle, characterized in that said excitation circuit electric pump includes a second electric switch (13) mounted in series with the first (8), arranged so as to be closed when the vehicle's on-board circuit is powered up, and associated with means suitable for automatically neutralizing its closing at the latest at the time of engine start-up. 2. Dispositif d'élimination d'eau selon la revendication 1, caractérisé en ce que les moyens pour neutraliser la fermeture du second interrupteur (13) sont synchronisés avec ceux généralement prévus pour signaler la fin des périodes de préchauffage du moteur (M).2. A water elimination device according to claim 1, characterized in that the means for neutralizing the closing of the second switch (13) are synchronized with those generally provided for signaling the end of the engine preheating periods (M). 3. Dispositif d'élimination d'eau selon l'une quelconque des précédentes revendications, caractérisé en ce que les moyens pour neutraliser la fermeture du second interrupteur (13) comprennent un troisième inter­rupteur (15) monté en série avec les deux premiers (8 et 13).3. Water elimination device according to any one of the preceding claims, characterized in that the means for neutralizing the closing of the second switch (13) comprise a third switch (15) mounted in series with the first two (8 and 13). 4. Dispositif d'élimination d'eau selon la re­vendication 3, caractérisé en ce que les moyens pour neutraliser la fermeture du second interrupteur (13) sont des moyens de temporisation.4. A water elimination device according to claim 3, characterized in that the means for neutralizing the closing of the second switch (13) are delay means.
EP89400970A 1988-04-11 1989-04-07 Device for removing water from gasoil for a diesel engine Expired - Lifetime EP0337861B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8804760A FR2629876B1 (en) 1988-04-11 1988-04-11 DEVICES FOR REMOVING WATER FROM DIESEL FUELING A DIESEL ENGINE
FR8804760 1988-04-11

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EP0337861A1 true EP0337861A1 (en) 1989-10-18
EP0337861B1 EP0337861B1 (en) 1992-05-20

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EP89400970A Expired - Lifetime EP0337861B1 (en) 1988-04-11 1989-04-07 Device for removing water from gasoil for a diesel engine

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US (1) US4898140A (en)
EP (1) EP0337861B1 (en)
JP (1) JPH01310160A (en)
DE (1) DE68901575D1 (en)
ES (1) ES2031373T3 (en)
FR (1) FR2629876B1 (en)

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DE19847999A1 (en) * 1998-10-17 2000-04-20 Mann & Hummel Filter Diesel fuel filter with automatic water disposal is used to pump under pressure dewater fuel to main filter
EP1081371A2 (en) * 1999-09-03 2001-03-07 Salvatore Italiano Device for automatically discharging water and air from fuel filters
WO2001033069A1 (en) * 1999-11-03 2001-05-10 Ufi Universal Filter International S.P.A. Unit for automatically bleeding off the water which separates in a vehicle fuel filter, in particular for diesel engines
WO2010149642A1 (en) * 2009-06-24 2010-12-29 Mann+Hummel Gmbh Fluid filter system of a fluid circuit
EP3467295A3 (en) * 2017-10-03 2019-05-15 Rotex Automation Limited A solenoid operated unit for detecting and removing undesired fluid with diagnostic metering

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ITRE20020013A1 (en) * 2002-02-04 2003-08-04 Ufi Universal Filter Int Spa DEVICE TO PURGE SEPARATION WATER FROM A FUEL FILTER
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DE202005015596U1 (en) * 2005-09-30 2007-02-08 Mann + Hummel Gmbh Water discharging device for use in internal combustion engine of vehicle, has collecting chamber attached to outlet of fuel guiding container and comprising substance containing hydrocarbon such as charcoal or alumina
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EP2772640B1 (en) * 2013-03-01 2015-12-16 Roman Taniel Method and device for operating a diesel engine with emulsion fuels of variable composition
JP6436852B2 (en) * 2015-05-21 2018-12-12 株式会社クボタ Work vehicle
DE102016222778A1 (en) * 2016-11-18 2018-05-24 Siemens Aktiengesellschaft Process for dewatering a fuel, dewatering device and fuel supply device
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DE19847999A1 (en) * 1998-10-17 2000-04-20 Mann & Hummel Filter Diesel fuel filter with automatic water disposal is used to pump under pressure dewater fuel to main filter
EP1081371A2 (en) * 1999-09-03 2001-03-07 Salvatore Italiano Device for automatically discharging water and air from fuel filters
EP1081371A3 (en) * 1999-09-03 2001-10-24 Salvatore Italiano Device for automatically discharging water and air from fuel filters
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WO2010149642A1 (en) * 2009-06-24 2010-12-29 Mann+Hummel Gmbh Fluid filter system of a fluid circuit
EP3467295A3 (en) * 2017-10-03 2019-05-15 Rotex Automation Limited A solenoid operated unit for detecting and removing undesired fluid with diagnostic metering

Also Published As

Publication number Publication date
FR2629876A1 (en) 1989-10-13
FR2629876B1 (en) 1991-03-08
DE68901575D1 (en) 1992-06-25
EP0337861B1 (en) 1992-05-20
JPH01310160A (en) 1989-12-14
US4898140A (en) 1990-02-06
ES2031373T3 (en) 1992-12-01

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