FR3083269B1 - METHOD FOR DIAGNOSING A LOWER SEAL OF AN INTERNAL COMBUSTION ENGINE CYLINDER - Google Patents

METHOD FOR DIAGNOSING A LOWER SEAL OF AN INTERNAL COMBUSTION ENGINE CYLINDER Download PDF

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Publication number
FR3083269B1
FR3083269B1 FR1855960A FR1855960A FR3083269B1 FR 3083269 B1 FR3083269 B1 FR 3083269B1 FR 1855960 A FR1855960 A FR 1855960A FR 1855960 A FR1855960 A FR 1855960A FR 3083269 B1 FR3083269 B1 FR 3083269B1
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FR
France
Prior art keywords
diagnosing
internal combustion
combustion engine
cylinder
engine cylinder
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.)
Active
Application number
FR1855960A
Other languages
French (fr)
Other versions
FR3083269A1 (en
Inventor
Christophe BOUQUEY
Stephane Eloy
Nathalie Raud
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.)
Continental Automotive GmbH
Continental Automotive France SAS
Original Assignee
Continental Automotive GmbH
Continental Automotive France SAS
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 Continental Automotive GmbH, Continental Automotive France SAS filed Critical Continental Automotive GmbH
Priority to FR1855960A priority Critical patent/FR3083269B1/en
Priority to PCT/EP2019/066631 priority patent/WO2020002207A1/en
Publication of FR3083269A1 publication Critical patent/FR3083269A1/en
Application granted granted Critical
Publication of FR3083269B1 publication Critical patent/FR3083269B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/042—Testing internal-combustion engines by monitoring a single specific parameter not covered by groups G01M15/06 - G01M15/12
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M15/00—Testing of engines
    • G01M15/04—Testing internal-combustion engines
    • G01M15/08—Testing internal-combustion engines by monitoring pressure in cylinders

Abstract

L'invention concerne un procédé de diagnostic d'une baisse d'étanchéité d'un cylindre de moteur à combustion interne, comprenant les étapes suivantes : détection d'un arrêt du moteur, détermination d'au moins un cylindre fermé, mesure de la pression et calcul d'un indicateur de décroissance de la pression dans ledit au moins un cylindre, comparaison de l'indicateur avec un seuil ; lorsque l'indicateur est supérieur au dit seuil, il est diagnostiqué une baisse d'étanchéité dans ledit au moins un cylindre et une alarme est déclenchée.The invention relates to a method for diagnosing a loss of tightness of an internal combustion engine cylinder, comprising the following steps: detection of an engine stop, determination of at least one closed cylinder, measurement of the pressure and calculation of a pressure decrease indicator in said at least one cylinder, comparison of the indicator with a threshold; when the indicator is above said threshold, a leak in the said at least one cylinder is diagnosed and an alarm is triggered.

FR1855960A 2018-06-29 2018-06-29 METHOD FOR DIAGNOSING A LOWER SEAL OF AN INTERNAL COMBUSTION ENGINE CYLINDER Active FR3083269B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR1855960A FR3083269B1 (en) 2018-06-29 2018-06-29 METHOD FOR DIAGNOSING A LOWER SEAL OF AN INTERNAL COMBUSTION ENGINE CYLINDER
PCT/EP2019/066631 WO2020002207A1 (en) 2018-06-29 2019-06-24 Method for diagnosing a reduction in tightness of an internal combustion engine cylinder

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1855960A FR3083269B1 (en) 2018-06-29 2018-06-29 METHOD FOR DIAGNOSING A LOWER SEAL OF AN INTERNAL COMBUSTION ENGINE CYLINDER
FR1855960 2018-06-29

Publications (2)

Publication Number Publication Date
FR3083269A1 FR3083269A1 (en) 2020-01-03
FR3083269B1 true FR3083269B1 (en) 2020-06-05

Family

ID=63209585

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1855960A Active FR3083269B1 (en) 2018-06-29 2018-06-29 METHOD FOR DIAGNOSING A LOWER SEAL OF AN INTERNAL COMBUSTION ENGINE CYLINDER

Country Status (2)

Country Link
FR (1) FR3083269B1 (en)
WO (1) WO2020002207A1 (en)

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2212466A (en) * 1938-08-15 1940-08-20 Robert L Bradford Pressure leakage gauge
US3320801A (en) * 1964-11-13 1967-05-23 Jr George D Rhindress Compression and leakage tester
DE2709128C2 (en) * 1977-03-02 1979-04-19 Siemens Ag, 1000 Berlin Und 8000 Muenchen Method for determining a measured value proportional to the compression of an internal combustion engine
US5492006A (en) * 1993-11-29 1996-02-20 Bauer Associates, Inc. Method of testing internal combustion engine
DE4420290A1 (en) * 1994-06-10 1995-12-14 Bosch Gmbh Robert Detecting leaking exhaust valve of vehicle
DE19734680B4 (en) * 1996-08-16 2008-09-04 Conti Temic Microelectronic Gmbh Method for cylinder-selective leak testing of the combustion chambers of internal combustion engines
US6810320B2 (en) * 2001-03-30 2004-10-26 Mitsubishi Heavy Industries, Ltd. Apparatus and method of combustion diagnosis/control in internal combustion engine

Also Published As

Publication number Publication date
FR3083269A1 (en) 2020-01-03
WO2020002207A1 (en) 2020-01-02

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