Search International and National Patent Collections
Some content of this application is unavailable at the moment.
If this situation persists, please contact us atFeedback&Contact
1. (WO2007009829) FUEL SUPPLY SYSTEM, ESPECIALLY FOR AN INTERNAL COMBUSTION ENGINE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/2007/009829 International Application No.: PCT/EP2006/062671
Publication Date: 25.01.2007 International Filing Date: 29.05.2006
IPC:
F02M 63/02 (2006.01) ,F02M 59/36 (2006.01) ,F02M 37/18 (2006.01)
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
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
59
Pumps specially adapted for fuel-injection and not provided for in groups F02M39/-F02M57/126
20
Varying fuel delivery in quantity or timing
36
by variably-timed valves controlling fuel passages
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
37
Apparatus 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
04
Feeding by means of driven pumps
18
characterised by provision of main and auxiliary pumps
Applicants:
ROBERT BOSCH GMBH [DE/DE]; Postfach 30 02 20 70442 Stuttgart, DE (AllExceptUS)
SCHROEDER, Bernd [DE/DE]; DE (UsOnly)
Inventors:
SCHROEDER, Bernd; DE
Common
Representative:
ROBERT BOSCH GMBH; Postfach 30 02 20 70442 Stuttgart, DE
Priority Data:
102005033638.819.07.2005DE
Title (DE) KRAFTSTOFF-FÖRDEREINRICHTUNG, INSBESONDERE FÜR EINE BRENNKRAFTMASCHINE
(EN) FUEL SUPPLY SYSTEM, ESPECIALLY FOR AN INTERNAL COMBUSTION ENGINE
(FR) DISPOSITIF D'ALIMENTATION EN CARBURANT, DESTINE EN PARTICULIER A UN MOTEUR A COMBUSTION
Abstract:
(DE) Eine Kraftstoff-Fördereinrichtung umfasst eine Kolbenpumpe (6) mit einem Arbeitsraum (104) sowie eine einstellbare Drosseleinrichtung (20), die stromaufwärts vom Arbeitsraum (104) angeordnet ist und den Zustrom von Kraftstoff zum Arbeitsraum (104) verändern kann. Es wird vorgeschlagen, dass die Drosseleinrichtung (20) in geschlossenem Zustand eine Leckagemenge in den Arbeitsraum (104) gelangen lässt, und dass die Kolbenpumpe (6) eine Leckagepumpeinrichtung (113) aufweist, welche die Leckagemenge mindestens zum Teil aus dem Arbeitsraum (104) zu einem stromaufwärts von der Drosseleinrichtung (20) gelegenen Niederdruckbereich (8) fördert.
(EN) A fuel supply system comprises a piston pump (6) having a working chamber (104) and an adjustable throttle device (20), arranged upstream of the working chamber (104) and adapted to modify the flow of fuel supplied to the working chamber (104). The invention is characterized in that the throttle device (20), in the closed position, allows a leakage volume to arrive at the working chamber (104). The piston pump (6) comprises a leakage pump device (113) which supplies at least a part of the leakage volume from the working chamber (104) to a low-pressure zone (8) located upstream of the throttle device (20).
(FR) L'invention concerne un dispositif d'alimentation en carburant qui comprend une pompe à piston (6) comportant une chambre de travail (104), ainsi qu'un dispositif d'étranglement (20) réglable qui est disposé en amont de la chambre de travail (104) et qui peut modifier l'afflux de carburant dans la chambre de travail (104). Selon l'invention, le dispositif d'étranglement (20) laisse passer une quantité de fuite dans la chambre de travail (104) lorsqu'il se trouve à l'état fermé et la pompe à piston (6) présente un dispositif de pompage de fuite (113) qui refoule la quantité de fuite au moins partiellement de la chambre de travail (104) vers une zone basse pression (8) située en amont du dispositif d'étranglement (20).
front page image
Designated States: AE, AG, AL, AM, AT, AU, AZ, BA, BB, BG, BR, BW, BY, BZ, CA, CH, CN, CO, CR, CU, CZ, DK, DM, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LC, LK, LR, LS, LT, LU, LV, LY, MA, MD, MG, MK, MN, MW, MX, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RU, SC, SD, SE, SG, SK, SL, SM, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, YU, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HU, IE, IS, IT, LT, LU, LV, MC, NL, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG)
Publication Language: German (DE)
Filing Language: German (DE)
Also published as:
EP1913255JP2009501867US20080184969CN101223353