FR3053117B1 - METHOD FOR DETECTING AN AIR LEAKAGE DOWNSTREAM OF A COMPRESSOR OF A TURBOCHARGER - Google Patents

METHOD FOR DETECTING AN AIR LEAKAGE DOWNSTREAM OF A COMPRESSOR OF A TURBOCHARGER Download PDF

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Publication number
FR3053117B1
FR3053117B1 FR1655848A FR1655848A FR3053117B1 FR 3053117 B1 FR3053117 B1 FR 3053117B1 FR 1655848 A FR1655848 A FR 1655848A FR 1655848 A FR1655848 A FR 1655848A FR 3053117 B1 FR3053117 B1 FR 3053117B1
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Prior art keywords
air mass
detecting
turbocharger
compressor
cylinder
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FR1655848A
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French (fr)
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FR3053117A1 (en
Inventor
Vincent-Pierre AVONS
Cedric Lefevre
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Renault SAS
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Renault SAS
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Priority to FR1655848A priority Critical patent/FR3053117B1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/26—Investigating fluid-tightness of structures by using fluid or vacuum by measuring rate of loss or gain of fluid, e.g. by pressure-responsive devices, by flow detectors
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M3/00—Investigating fluid-tightness of structures
    • G01M3/02—Investigating fluid-tightness of structures by using fluid or vacuum
    • G01M3/025—Details with respect to the testing of engines or engine parts

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Combined Controls Of Internal Combustion Engines (AREA)
  • Examining Or Testing Airtightness (AREA)

Abstract

L'invention se rapporte à un procédé de détection d'une fuite dans une ligne d'admission en air (3, 7) d'un moteur thermique (2) doté d'un collecteur d'admission (8) et de cylindres (13), ladite détection s'effectuant entre un compresseur (20) d'un turbocompresseur et ledit moteur (2). La principale caractéristique d'un procédé de détection selon l'invention est qu'il comprend les étapes suivantes, - une étape de mesure du débit d'air dans la ligne d'admission (3, 6), - une étape d'estimation de la masse d'air admise par un cylindre (13) à travers une étape de détermination de la masse d'air enfermée dans ledit cylindre (13), et qui est fonction de la pression dans celui-ci, - une étape de comparaison entre la masse d'air admise estimée et la masse d'air théorique dans le cylindre (13) déduite de la mesure du débit d'air, - une étape de détection d'une fuite si la masse d'air admise est inférieure à la masse d'air théorique.The invention relates to a method for detecting a leak in an air intake line (3, 7) of a heat engine (2) provided with an intake manifold (8) and cylinders ( 13), said detection being carried out between a compressor (20) of a turbocharger and said engine (2). The main characteristic of a detection method according to the invention is that it comprises the following steps, - a step for measuring the air flow rate in the intake line (3, 6), - an estimation step of the air mass admitted by a cylinder (13) through a step of determining the air mass enclosed in said cylinder (13), and which is a function of the pressure therein, - a comparison step between the estimated admitted air mass and the theoretical air mass in the cylinder (13) deduced from the measurement of the air flow, - a step of detecting a leak if the admitted air mass is less than the theoretical air mass.

FR1655848A 2016-06-23 2016-06-23 METHOD FOR DETECTING AN AIR LEAKAGE DOWNSTREAM OF A COMPRESSOR OF A TURBOCHARGER Active FR3053117B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1655848A FR3053117B1 (en) 2016-06-23 2016-06-23 METHOD FOR DETECTING AN AIR LEAKAGE DOWNSTREAM OF A COMPRESSOR OF A TURBOCHARGER

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1655848A FR3053117B1 (en) 2016-06-23 2016-06-23 METHOD FOR DETECTING AN AIR LEAKAGE DOWNSTREAM OF A COMPRESSOR OF A TURBOCHARGER
FR1655848 2016-06-23

Publications (2)

Publication Number Publication Date
FR3053117A1 FR3053117A1 (en) 2017-12-29
FR3053117B1 true FR3053117B1 (en) 2020-06-05

Family

ID=57137032

Family Applications (1)

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FR1655848A Active FR3053117B1 (en) 2016-06-23 2016-06-23 METHOD FOR DETECTING AN AIR LEAKAGE DOWNSTREAM OF A COMPRESSOR OF A TURBOCHARGER

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FR (1) FR3053117B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3128251B1 (en) 2021-10-14 2023-09-01 Renault Sas METHOD FOR DIAGNOSING THE PLAUSIBILITY OF DRIFT OF AN AIR FLOW METER SENSOR IN A THERMAL ENGINE

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10065474C1 (en) * 2000-12-28 2002-06-06 Bosch Gmbh Robert Fuel metering control method for turbocharged IC engine, fuel injection has replacement main control value provided when leak is detected in engine air intake
FR2963424B1 (en) * 2010-07-28 2013-07-12 Renault Sas METHOD FOR DIAGNOSING A COMPRESSED FRESH AIR LEAK IN AN INTERNAL COMBUSTION ENGINE

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Publication number Publication date
FR3053117A1 (en) 2017-12-29

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