piquage de débit

English translation: pressure reading connection / pressure check / gauge port

14:07 Apr 21, 2019
French to English translations [PRO]
Tech/Engineering - Mechanics / Mech Engineering / open hydraulic circuit
French term or phrase: piquage de débit
Hello,

"Système caractérisé par le fait que le moyen adapté pour relier la partie du conduit de retour située en amont de l’élément formant restriction et appliquer au carter du moteur, à partir de ce conduit de retour, une pression inférieure à la pression de ce conduit de retour, comprend un piquage de débit sur le conduit de retour qui comporte une restriction de limitation secondaire et un clapet de fuite.

is "piquage" here "tapping"?
I also have "moyens de repiquage" :S

Does anyone know what this is here please?

Thank you for your time.

Louisa.
Louisa Tchaicha
Tunisia
Local time: 04:13
English translation:pressure reading connection / pressure check / gauge port
Explanation:
three possibilities (out of my personnal glossary)
Selected response from:

Raoul COLIN (X)
Local time: 04:13
Grading comment
Many thanks to everyone.
4 KudoZ points were awarded for this answer



Summary of answers provided
3 +2pressure reading connection / pressure check / gauge port
Raoul COLIN (X)
5branch duct (or branch conduit)
Johannes Gleim
1flow tap
andres-larsen


Discussion entries: 10





  

Answers


2 hrs   confidence: Answerer confidence 1/5Answerer confidence 1/5
flow tap


Explanation:
piquage sur un débit > flow tap / prise de débit > tapping

sources:

Comprehensive Dictionary of Petroleum Science and Technology:
https://books.google.com/books?isbn=2710806487 -
Magdeleine Moureau, ‎Gerald Brace - 1993 - ‎Anglais (Langue) - Dictionnaires français
... piquage sur un débit : flow tap. ...

Glossary of onshore and offshore pipelines:
https://books.google.com/books?isbn=2710803569 -
Omnium technique des transports par pipelines - 1979 - ‎Foreign Language Study
... piquage sur un débit : flow tap. ...

Dictionary of Building and Civil Engineering: English/French ...
https://books.google.com/books?isbn=1135821674 -
Don Montague - 2003 - ‎Technology & Engineering
... tapping, flowmeter prise/de débit-mètre ...

transliterated:

System characterized by the fact that the means adapted to connect the portion of the return duct situated upstream of the restriction element and to apply to the motor housing, from this return duct, a pressure lower than the pressure of this return duct includes a flow tap on the return duct which has a secondary limiting restriction and a check valve

andres-larsen
Venezuela
Local time: 23:13
Native speaker of: Native in EnglishEnglish
PRO pts in category: 4
Notes to answerer
Asker: Thank you Andres :)

Login to enter a peer comment (or grade)

6 hrs   confidence: Answerer confidence 3/5Answerer confidence 3/5 peer agreement (net): +2
pressure reading connection / pressure check / gauge port


Explanation:
three possibilities (out of my personnal glossary)

Raoul COLIN (X)
Local time: 04:13
Specializes in field
Native speaker of: Native in FrenchFrench, Native in EnglishEnglish
PRO pts in category: 77
Grading comment
Many thanks to everyone.
Notes to answerer
Asker: Thank you Raoul :)


Peer comments on this answer (and responses from the answerer)
agree  B D Finch: Seems likely: https://kobold.com/fr/product/detail/~nm.61~nc.17~id.391/Med...
1 day 15 hrs

agree  Kim Metzger
2 days 15 hrs
Login to enter a peer comment (or grade)

22 hrs   confidence: Answerer confidence 5/5
branch duct (or branch conduit)


Explanation:
As we are dealing probably with exhaust gas recirculation I like first to explain the exhaust gas recirculation system and will add proper patents:

In internal combustion engines, exhaust gas recirculation (EGR) is a nitrogen oxide (NOx) emissions reduction technique used in petrol/gasoline and diesel engines. EGR works by recirculating a portion of an engine's exhaust gas back to the engine cylinders. This dilutes the O2 in the incoming air stream and provides gases inert to combustion to act as absorbents of combustion heat to reduce peak in-cylinder temperatures. NOx is produced in high temperature mixtures of atmospheric nitrogen and oxygen that occur in the combustion cylinder, and this usually occurs at cylinder peak pressure. Another primary benefit of external EGR valves on a spark ignition engine is an increase in efficiency, as charge dilution allows a larger throttle position and reduces associated pumping losses.
In a gasoline engine, this inert exhaust displaces some amount of combustible charge in the cylinder, effectively reducing the quantity of charge available for combustion without affecting the air fuel ratio. In a diesel engine, the exhaust gas replaces some of the excess oxygen in the pre-combustion mixture.[1] Because NOx forms primarily when a mixture of nitrogen and oxygen is subjected to high temperature, the lower combustion chamber temperatures caused by EGR reduces the amount of NOx the combustion generates.
:
In a typical automotive spark-ignited (SI) engine, 5% to 15% of the exhaust gas is routed back to the intake as EGR. The maximum quantity is limited by the need of the mixture to sustain a continuous flame front during the combustion event; excessive EGR in poorly set up applications can cause misfires and partial burns. Although EGR does measurably slow combustion, this can largely be compensated for by advancing spark timing. The impact of EGR on engine efficiency largely depends on the specific engine design, and sometimes leads to a compromise between efficiency and NOx emissions. A properly operating EGR can theoretically increase the efficiency of gasoline engines via several mechanisms:
• Reduced throttling losses. The addition of inert exhaust gas into the intake system means that for a given power output, the throttle plate must be opened further, resulting in increased inlet manifold pressure and reduced throttling losses.[6]
• Reduced heat rejection. Lowered peak combustion temperatures not only reduces NOx formation, it also reduces the loss of thermal energy to combustion chamber surfaces, leaving more available for conversion to mechanical work during the expansion stroke.
• Reduced chemical dissociation. The lower peak temperatures result in more of the released energy remaining as sensible energy near TDC (Top Dead-Center), rather than being bound up (early in the expansion stroke) in the dissociation of combustion products. This effect is minor compared to the first two.
EGR is typically not employed at high loads because it would reduce peak power output. This is because it reduces the intake charge density. EGR is also omitted at idle (low-speed, zero load) because it would cause unstable combustion, resulting in rough idle.
Since the EGR system recirculates a portion of exhaust gases, over time the valve can become clogged with carbon deposits that prevent it from operating properly. Clogged EGR valves can sometimes be cleaned, but replacement is necessary if the valve is faulty.
https://en.wikipedia.org/wiki/Exhaust_gas_recirculation

La recirculation des gaz d'échappement, ou RGE (en anglais, EGR pour exhaust gas recirculation) est un système qui consiste à rediriger une partie des gaz d'échappement des moteurs à combustion dans le collecteur d'admission, pour réduire sélectivement les émissions d'oxydes d'azote (NOx) et de particules afin de satisfaire aux normes antipollution sans avoir à modifier la structure du moteur
:
Le système de dépollution par recirculation des gaz d'échappement est constitué d'une conduite permettant de faire transiter une partie des gaz d'échappement vers l'admission, assortie d'un échangeur thermique destiné à refroidir les gaz brûlés et d'une vanne, appelée communément vanne EGR, qui vient régler le débit de gaz brûlés. Cette vanne peut être pilotée par le calculateur de contrôle moteur.
https://fr.wikipedia.org/wiki/Recirculation_des_gaz_d'échapp...

This description matches well my proposal:

Procédé de diagnostic d'un système de recirculation partielle des gaz d'échappement de moteur automobile. Procédé de diagnostic de défaillance d'un système de recirculation partielle des gaz d'échappement d'un moteur à combustion interne de véhicule automobile de type diesel, le moteur à combustion interne étant muni d'un moyen de détermination du débit d'air admis. Le procédé comprend les étapes suivantes: on détermine si la consigne d'air admis est stable depuis une période de temps mémorisée, lorsque tel est le cas, on calcule un critère intégral de diagnostic fonction de la consigne de débit d'air admis et de la mesure d'air admis, puis on détermine si la valeur du critère intégral de diagnostic est supérieure à un seuil, si tel est le cas, on émet un signal de détection de défaut du système de recirculation partielle des gaz d'échappement.
:
• Le circuit d'EGR dit haute pression (HP) est interne au circuit de suralimentation. L’entrée du circuit est disposée avant la turbine et la sortie est disposée après le compresseur. Ce circuit EGR est utilisé sur l’ensemble des moteurs répondant aux normes de dépollution.

• Le circuit d’EGR dit basse pression (BP) est externe au circuit de suralimentation. L’entrée du circuit est disposée après le filtre à particules et la sortie est disposée avant le compresseur. Ce circuit EGR est utilisé sur certains moteurs répondant aux futures normes de dépollution.
:
Le taux d’EGR BP est assuré en mettant en communication le circuit d’échappement après le filtre à particule et le circuit d’admission avant le compresseur via une section de passage dont la dimension est réglée par une vanne EGR BP. Le taux d 'EGR HP est assuré en mettant en communication le circuit d’échappement avant la turbine et le circuit d’admission après le compresseur via une section de passage dont la dimension est réglée par une vanne EGR HP. Un volet d’admission placée en amont de la vanne EGR HP permet d’augmenter la différence de pression aux bornes du circuit EGR HP et donc d’augmenter le taux d' EGR HP.
• Le circuit d'EGR dit haute pression (HP) est interne au circuit de suralimentation. L’entrée du circuit est disposée avant la turbine et la sortie est disposée après le compresseur. Ce circuit EGR est utilisé sur l’ensemble des moteurs répondant aux normes de dépollution.

• Le circuit d’EGR dit basse pression (BP) est externe au circuit de suralimentation. L’entrée du circuit est disposée après le filtre à particules et la sortie est disposée avant le compresseur. Ce circuit EGR est utilisé sur certains moteurs répondant aux futures normes de dépollution.
:
Le taux d’EGR BP est assuré en mettant en communication le circuit d’échappement après le filtre à particule et le circuit d’admission avant le compresseur via une section de passage dont la dimension est réglée par une vanne EGR BP. Un volet d’échappement placé dans la ligne d’échappement après le piquage EGR BP permet d’augmenter la différence de pression aux bornes du circuit EGR BP et donc d’augmenter le taux d'EGR BP.
https://patents.google.com/patent/EP3234326A1/fr
(de Reault SA)

Appareil de commande de débit de recyclage des gaz d'échappement d'un moteur à combustion interne
https://patents.google.com/patent/EP2292917B1/fr

A recirculation duct with a check valve is connected to an exhaust duct communicating with the engine and a turbine of a turbocharger and a delivery duct communicating with the engine and compressor of the turbocharger. A branch duct is connected to the delivery tube upstream of the recirculation duct. In the branch duct, a control valve is provided for controlling a quantity of air flowing in the branch duct according to both a pressure in the exhaust duct and a pressure in the delivery duct downstream of the branch duct to lower the pressure in the delivery duct downstream of the branch duct thereby recirculating part of the exhaust gas.
https://www.osti.gov/biblio/5585192-exhaust-gas-recirculatio...

This patent describes an exhaust gas recirculation apparatus for an internal combustion engine having an intake air passage and an exhaust gas passage connected thereto. The apparatus comprises: an exhaust gas recirculation passage connecting the exhaust gas passage to the intake air passage for recirculating the exhaust gas into the intake air passage; and a vacuum-operated exhaust gas recirculation control valve disposed in the exhaust gas recirculation passage for controlling the flow of the exhaust gas to be recirculated.
https://www.osti.gov/biblio/6365550-exhaust-gas-recirculatio...

What I claim is:
1. Apparatus. for feeding at least an element of a combustible mixture to an internal combustion engine; comprising an intake conduit opening to the atmosphere at one end, a first nozzle member disposed within said conduit intermediate the length of the latter for producing a decreased pressure at its location, a branch conduit opening into said intake conduit at the location of said nozzle, means supplying compressed air to said branch conduit, a fuel supply duct opening into the intake conduit at the point of said first nozzle member, and a second nozzle disposed at said one end of the intake conduit for decreasing the pressure thereat.
2. In an internal combustion engine, a device comprising an intake duct communicating at one end with the outside air, through which air is sucked in by the engine, a branch duct leading into the intake duct intermediate the ends thereof, a Roots type blower in the branch duct driven by the engine for supplying air under pressure into the intake duct through the branch duct, the branch duct being normally constantly open between the blower and the intake duct, and a fuel supply duct opening into the intake duct at the point where the branch duct opens into the intake duct.
https://patents.google.com/patent/US2702535A/en
(Mercedes Benz)

[0036] The above three architectures may further comprise a second branch duct LP EGR said low pressure (LP EGR "Low Pressure" as opposed to HP EGR "High Pressure" present on all Diesel) located downstream of the DPF.
https://patents.google.com/patent/EP2444614A1/en
The French original reads as following:
[0036] Les trois architectures susvisées peuvent comprendre en outre un deuxième embranchement de conduit EGR LP dit basse pression (EGR LP "Low Pressure" par opposition à l'EGR HP "High Pressure" présent sur tous les Diesel), situé en aval du DPF.
https://patents.google.com/patent/EP2444614A1/fr

I think that we do not need to translate literally piquage "débit" and propose the following circumscription:

à partir de ce conduit de retour, une pression inférieure à la pression de ce conduit de retour, comprend un piquage de débit sur le conduit de retour
=>
from this return duct, a pressure below the pressure of the return duct is delivered by a branch duct to the return duct ...


Johannes Gleim
Local time: 04:13
Works in field
Native speaker of: German
PRO pts in category: 55
Notes to answerer
Asker: Thank you Johannes for this extensive research!

Login to enter a peer comment (or grade)



Login or register (free and only takes a few minutes) to participate in this question.

You will also have access to many other tools and opportunities designed for those who have language-related jobs (or are passionate about them). Participation is free and the site has a strict confidentiality policy.

KudoZ™ translation help

The KudoZ network provides a framework for translators and others to assist each other with translations or explanations of terms and short phrases.


See also:
Term search
  • All of ProZ.com
  • Term search
  • Jobs
  • Forums
  • Multiple search