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1. (WO1998051921) DISCHARGING BY-PASS FOR HIGH PRESSURE DIRECT INJECTION PUMP
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1998/051921 International Application No.: PCT/FR1998/000911
Publication Date: 19.11.1998 International Filing Date: 06.05.1998
Chapter 2 Demand Filed: 19.10.1998
IPC:
F02D 41/32 (2006.01) ,F02D 41/38 (2006.01) ,F02M 55/00 (2006.01) ,F02M 63/02 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
41
Electrical control of supply of combustible mixture or its constituents
30
Controlling fuel injection
32
of the low pressure type
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
D
CONTROLLING COMBUSTION ENGINES
41
Electrical control of supply of combustible mixture or its constituents
30
Controlling fuel injection
38
of the high pressure type
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
M
SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
55
Fuel-injection apparatus characterised by their fuel conduits or their venting means
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02
COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
M
SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
63
Other fuel-injection apparatus having pertinent characteristics not provided for in groups F02M39/-F02M57/143; Details, component parts or accessories of fuel-injection apparatus, not provided for in, or of interest apart from, the apparatus of groups F02M39/-F02M61/193
02
Fuel-injection apparatus having several injectors fed by a common pumping element, or having several pumping elements feeding a common injector; Fuel-injection apparatus having provisions for cutting-out pumps, pumping elements, or injectors; Fuel-injection apparatus having provisions for variably interconnecting pumping elements and injectors alternatively
Applicants:
MAGNETI MARELLI FRANCE [FR/FR]; 19, rue Lavoisier F-92002 Nanterre Cedex, FR (AllExceptUS)
PONTOPPIDAN, Michaël [FR/FR]; FR (UsOnly)
Inventors:
PONTOPPIDAN, Michaël; FR
Agent:
BEROGIN, Francis; Cabinet Plasseraud 84, rue d'Amsterdam F-75440 Paris Cedex 09, FR
Priority Data:
97/0572409.05.1997FR
Title (EN) DISCHARGING BY-PASS FOR HIGH PRESSURE DIRECT INJECTION PUMP
(FR) BY-PASS DE DELESTAGE POUR POMPE A INJECTION DIRECTE A HAUTE PRESSION
Abstract:
(EN) The invention concerns a discharging device for a high pressure direct injection pump (10) supplying fuel to a motor vehicle engine injector ramp (6), the pump (10) being supplied with fuel by a low pressure electric supercharging pump (11) communicating with a fuel tank (14) and the high pressure delivered being regulated by a pressure regulator (9), said pressure regulator (9) operating as a three-way valve supplying fuel, below a predetermined threshold of the engine rotation speed, to the ramp (6) by the supercharging pump (11), then supplying said ramp (6) through the injection pump (10) top part when the engine speed is above the predetermined threshold.
(FR) L'invention est relative à un dispositif de délestage d'une pompe à injection directe à haute pression (10) destinée à alimenter en essence une rampe (6) d'injecteurs d'un moteur de véhicule automobile, la pompe (10) étant alimentée en carburant par une pompe électrique de gavage (11) basse pression communiquant avec un réservoir de carburant (14) et la haute pression délivrée étant régulée par un régulateur de pression (9), ce régulateur de pression (9) prenant la forme d'une vanne trois voies alimentant, au-dessous d'un seuil prédéterminé de la vitesse de rotation du moteur, la rampe (6) en essence par la pompe de gavage (11), puis alimentant cette rampe (6) par la partie haute de la pompe à injection (10) lorsque le régime moteur est au-dessus du seuil prédéterminé.
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Designated States: BR, US
European Patent Office (AT, BE, CH, CY, DE, DK, ES, FI, FR, GB, GR, IE, IT, LU, MC, NL, PT, SE)
Publication Language: French (FR)
Filing Language: French (FR)
Also published as:
EP0980472US6170473