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1. (WO2018158074) PUMP ELEMENT FOR A HIGH-PRESSURE PUMP
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Pub. No.: WO/2018/158074 International Application No.: PCT/EP2018/053530
Publication Date: 07.09.2018 International Filing Date: 13.02.2018
IPC:
F04B 1/04 (2006.01) ,F04B 11/00 (2006.01) ,F02M 59/02 (2006.01) ,F02M 59/44 (2006.01) ,F02M 59/10 (2006.01) ,F02M 63/02 (2006.01) ,F02M 55/04 (2006.01)
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1
Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
04
having cylinders in star- or fan-arrangement
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
B
POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
11
Equalisation of pulses, e.g. by use of air vessels; Counteracting cavitation
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
02
of reciprocating-piston 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
59
Pumps specially adapted for fuel-injection and not provided for in groups F02M39/-F02M57/126
44
Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02-F02M59/42165
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
02
of reciprocating-piston type
10
characterised by the piston drive
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
55
Fuel-injection apparatus characterised by their fuel conduits or their venting means
04
Means for damping vibrations in injection-pump inlets
Applicants:
ROBERT BOSCH GMBH [DE/DE]; Postfach 30 02 20 70442 Stuttgart, DE
Inventors:
FATDACHOW, Muzaffar; DE
Priority Data:
10 2017 203 427.002.03.2017DE
Title (EN) PUMP ELEMENT FOR A HIGH-PRESSURE PUMP
(FR) ÉLÉMENT DE POMPE POUR POMPE À HAUTE PRESSION
(DE) PUMPENELEMENT FÜR EINE HOCHDRUCKPUMPE
Abstract:
(EN) The invention relates to a pump element (48) for a high-pressure pump, in particular a high-pressure fuel pump in a common-rail injection system, comprising a pump piston (49), which is reciprocated in a pump cylinder head (50) and which delimits a pump working chamber (54) that can be connected to an inlet valve antechamber (61) via an inlet valve (53). In order to increase the efficiency of a high-pressure pump, a pulsation damping device (70) is arranged in the inlet valve antechamber (61).
(FR) L'invention concerne un élément de pompe (48) destiné à une pompe à haute pression, en particulier une pompe à carburant à haute pression dans un système d'injection à rampe commune, cet élément comprenant un piston de pompe (49) qui est guidé mobile selon un mouvement de va-et-vient dans une tête de cylindre de pompe (50) et qui délimite une chambre de travail (54) de la pompe, laquelle chambre de travail (54) peut être reliée à une préchambre de soupape d'admission (61) par l'intermédiaire d'une soupape d'admission (53). Selon l'invention, pour améliorer le rendement d'une pompe à haute pression, un dispositif d'amortissement de pulsations (70) est agencé dans la préchambre de soupape d'admission (61).
(DE) Pumpenelement (48) für eine Hochdruckpumpe, insbesondere für eine Kraftstoffhochdruckpumpe in einem Common-Rail-Einspritzsystem, mit einem Pumpenkolben (49), der in einem Pumpenzylinderkopf (50) hin und her bewegbar geführt ist und der einen Pumpenarbeitsraum (54) begrenzt, der über ein Einlassventil (53) mit einem Einlassventilvorraum (61) verbindbar ist. Um den Wirkungsgrad einer Hochdruckpumpe zu verbessern, ist in dem Einlassventilvorraum (61) eine Pulsationsdämpfungseinrichtung (70) angeordnet.
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: German (DE)
Filing Language: German (DE)