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1. WO2016139174 - METHOD AND SYSTEM FOR RESTORING CORRECT OPERATION OF A PREFEED PUMP OF A PUMP UNIT USED TO FEED FUEL TO AN INTERNAL-COMBUSTION ENGINE

Publication Number WO/2016/139174
Publication Date 09.09.2016
International Application No. PCT/EP2016/054210
International Filing Date 29.02.2016
IPC
F02D 41/30 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
30Controlling fuel injection
F02M 37/04 2006.01
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
37Apparatus 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
04Feeding by means of driven pumps
F02M 37/08 2006.01
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
37Apparatus 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
04Feeding by means of driven pumps
08electrically driven
F02D 41/38 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
30Controlling fuel injection
38of the high pressure type
F02D 41/22 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
22Safety or indicating devices for abnormal conditions
F02D 41/20 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
20Output circuits, e.g. for controlling currents in command coils
CPC
F02D 2041/2058
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
20Output circuits, e.g. for controlling currents in command coils
202characterised by the control of the circuit
2058using information of the actual current value
F02D 2041/2072
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
20Output circuits, e.g. for controlling currents in command coils
2068characterised by the circuit design or special circuit elements
2072Bridge circuits, i.e. the load being placed in the diagonal of a bridge to be controlled in both directions
F02D 41/221
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
22Safety or indicating devices for abnormal conditions
221relating to the failure of actuators or electrically driven elements
F02D 41/3082
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
30Controlling fuel injection
3082Control of electrical fuel pumps
F02D 41/3854
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
41Electrical control of supply of combustible mixture or its constituents
30Controlling fuel injection
38of the high pressure type
3809Common rail control systems
3836Controlling the fuel pressure
3845by controlling the flow into the common rail, e.g. the amount of fuel pumped
3854with elements in the low pressure part, e.g. low pressure pump
F02M 37/041
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
37Apparatus 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
04Feeding by means of driven pumps
041Arrangements for driving gear-type pumps
Applicants
  • ROBERT BOSCH GMBH [DE]/[DE]
Inventors
  • MATTIA, Antonio
  • GISSI, Ruggiero
Priority Data
10201590233558203.03.2015IT
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND SYSTEM FOR RESTORING CORRECT OPERATION OF A PREFEED PUMP OF A PUMP UNIT USED TO FEED FUEL TO AN INTERNAL-COMBUSTION ENGINE
(FR) PROCÉDÉ ET SYSTÈME PERMETTANT DE RÉTABLIR UN FONCTIONNEMENT CORRECT D'UNE POMPE DE PRÉ-ALIMENTATION D'UNE UNITÉ POMPE UTILISÉE POUR ALIMENTER EN CARBURANT UN MOTEUR À COMBUSTION INTERNE
Abstract
(EN)
Method for restoring correct operation and avoiding irreversible seizing of a prefeed pump of a pump unit for fuel (1) for an internal-combustion engine (3), in which an electronic pump control unit (36) associated with the prefeed pump (7) measures the power supply current (IS) of the related electric motor (24) and the engine control unit (38) temporarily inverts the direction of rotation of the electric motor (24) if the measured phase current (IS) exceeds a predetermined threshold current value (1ST) in order to purge the prefeed pump (7) of any dust and/or waste and/or hard particles.
(FR)
L'invention concerne un procédé permettant de rétablir un fonctionnement correct et éviter le grippage irréversible d'une pompe de pré-alimentation d'une unité pompe à carburant (1) pour un moteur à combustion interne (3), dans lequel une unité de commande de pompe électronique (36) associée à la pompe de pré-alimentation (7) mesure le courant d'alimentation électrique (IS) du moteur électrique associé (24) et l'unité de commande de moteur (38) inverse temporairement la direction de rotation du moteur électrique (24) si le courant de phase mesuré (IS) dépasse une valeur de courant seuil prédéterminée (1ST) afin de purger la pompe de pré-alimentation (7) de quelconques poussières et/ou déchets et/ou particules dures.
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