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1. WO2020141029 - FUEL PISTON PUMP

Publication Number WO/2020/141029
Publication Date 09.07.2020
International Application No. PCT/EP2019/081895
International Filing Date 20.11.2019
IPC
F02M 59/44 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
59Pumps specially adapted for fuel-injection and not provided for in groups F02M39/-F02M57/126
44Details, component parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02-F02M59/42165
F02M 55/00 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
55Fuel-injection apparatus characterised by their fuel conduits or their venting means
F04B 1/0421 2020.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
1Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
04having cylinders in star- or fan-arrangement
0404Details or component parts
0421Cylinders
F04B 53/16 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/-F04B23/ or F04B39/-F04B47/203
16Casings; Cylinders; Cylinder liners or heads; Fluid connections
CPC
F02M 2200/9061
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
2200Details of fuel-injection apparatus, not otherwise provided for
90Selection of particular materials
9053Metals
9061Special treatments for modifying the properties of metals used for fuel injection apparatus, e.g. modifying mechanical or electromagnetic properties
F02M 55/005
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
55Fuel-injection apparatus characterised by their fuel conduits or their venting means; ; Arrangements of conduits between fuel tank and pump F02M37/00
004Joints; Sealings
005for high pressure conduits, e.g. connected to pump outlet or to injector inlet
F02M 59/445
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
59Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00 ; , e.g. rotary cylinder-block type of pumps
44Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; ; Pumps having transducers, e.g. to measure displacement of pump rack or piston
445Selection of particular materials
F04B 53/16
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
04POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
BPOSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
53Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
16Casings; Cylinders; Cylinder liners or heads; Fluid connections
F05C 2201/0448
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
05INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
CINDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
2201Metals
04Heavy metals
0433Iron group; Ferrous alloys, e.g. steel
0448Steel
Applicants
  • ROBERT BOSCH GMBH [DE]/[DE]
Inventors
  • BREDENFELD, Guido
  • SCHETTER, Markus
Priority Data
10 2019 200 026.603.01.2019DE
Publication Language German (DE)
Filing Language German (DE)
Designated States
Title
(DE) KRAFTSTOFF-KOLBENPUMPE
(EN) FUEL PISTON PUMP
(FR) POMPE À CARBURANT À PISTON
Abstract
(DE)
Kraftstoff-Kolbenpumpe mit einem einstückig ausgebildeten metallischen Pumpengehäuse (52) und mit einem im Pumpengehäuse (52) vorgesehenen Arbeitsraum (26), mit einem Pumpenkolben (34), der im Pumpengehäuse (52) verschiebbar angeordnet ist und den Arbeitsraum (26) begrenzt, wobei das Pumpengehäuse (52) einen Verbindungsbereich (56.1, 56.2, 56.3, 56.4) aufweist, in dem das Pumpengehäuse (52) mit einem Anbauteil verbunden ist, dadurch gekennzeichnet, dass unmittelbar zwischen einem Dichtbereich (52.1) des Pumpengehäuses (52) und dem Pumpenkolben (34) eine Spaltdichtung (90) ausgebildet ist und dass das Pumpengehäuse (52) in dem Dichtbereich (52.1) eine höhere Härte aufweist als in dem Verbindungsbereich (56.1, 6.2, 56.3, 56.4).
(EN)
Fuel piston pump with a metallic pump housing (52) which is configured in one piece and with a working chamber (26) which is provided in the pump housing (52), with a pump piston (34) which is arranged displaceably in the pump housing (52) and delimits the working chamber (26), wherein the pump housing (52) has a connecting region (56.1, 56.2, 56.3, 56.4), in which the pump housing (52) is connected to an attachment part, characterized in that a gap seal (90) is configured directly between a sealing region (52.1) of the pump housing (52) and the pump piston (34), and in that the pump housing (52) has a greater hardness in the sealing region (52.1) than in the connecting region (56.1, 56.2, 56.3, 56.4).
(FR)
L'invention concerne une pompe à carburant à piston pourvue d'un carter (52) métallique réalisé d'une seule pièce et d'une chambre de travail (26) située dans le carter (52) de pompe, d'un piston (34) de pompe, qui est monté mobile dans le carter (52) de pompe et qui délimite la chambre de travail (26), le carter (52) de pompe présentant une zone de liaison (56.1, 56.2, 56.3, 56.4), dans laquelle le carter (52) de pompe est relié à une pièce rapportée. L'invention est caractérisée en ce qu'une garniture d'étanchéité (90) est réalisée directement entre une zone (52.1) d'étanchéité du carter (52) de pompe et le piston (34) de pompe et que le carter (52) de pompe présente dans la zone (52.1) d'étanchéité une dureté plus élevée que dans la zone de liaison (56.1, 56.2, 56.3, 56.4).
Also published as
Latest bibliographic data on file with the International Bureau