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1. WO2020112933 - HIGH PRESSURE FUEL PUMP WITH MECHANICAL PRESSURE REGULATION

Publication Number WO/2020/112933
Publication Date 04.06.2020
International Application No. PCT/US2019/063504
International Filing Date 27.11.2019
IPC
F02M 59/34 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
20Varying fuel delivery in quantity or timing
34by throttling of passages to pumping elements or of overflow passages
F02M 63/00 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
63Other 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
F02D 7/00 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
7Other non-electrical fuel injection control
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
F02M 61/20 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
61Fuel injectors not provided for in groups F02M39/-F02M57/94
16Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02-F02M61/14132
20Closing valves mechanically, e.g. arrangements of springs or weights
F02M 59/36 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
20Varying fuel delivery in quantity or timing
36by variably-timed valves controlling fuel passages
CPC
F02D 2200/0602
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
2200Input parameters for engine control
02the parameters being related to the engine
06Fuel or fuel supply system parameters
0602Fuel pressure
F02D 41/3845
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
F02D 41/406
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
40with means for controlling injection timing or duration
406Electrically controlling a diesel injection pump
F02D 7/007
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
DCONTROLLING COMBUSTION ENGINES
7Other fuel-injection control
002Throttling of fuel passages between pumps and injectors or overflow passages
007by fluid actuated means, e.g. slide valves
F02M 2200/505
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
50Arrangements of springs for valves used in fuel injectors or fuel injection pumps
505Adjusting spring tension by sliding spring seats
F02M 59/34
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
20Varying fuel delivery in quantity or timing
34by throttling of passages to pumping elements or of overflow passages ; , e.g. throttling by means of a pressure-controlled sliding valve having liquid stop or abutment
Applicants
  • STANADYNE LLC [US]/[US]
Inventors
  • PELLINI, Richard, P.
  • MOREL, Kenneth, R.
  • PALERMO, David, G.
  • MYREN, Dominic, M.
  • NORKIN, Yevgeniy
  • WEGRZYNIAK, Michael
Agents
  • MENARD, Thomas, J.
  • COVELLO, Diane, F.
  • JUAN, Juan
  • YALE, Guy, D.
  • ANDREWS, Alexander, E.
Priority Data
62/771,82927.11.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) HIGH PRESSURE FUEL PUMP WITH MECHANICAL PRESSURE REGULATION
(FR) POMPE À CARBURANT HAUTE PRESSION À RÉGULATION MÉCANIQUE DE PRESSION
Abstract
(EN)
A high pressure fuel pump includes an inlet metering valve arranged to control a quantity of fuel delivered to the pumping chamber during retracting motion of the pumping plunger. The inlet metering valve includes a metering valve member movable between a closed position and an open position, movement of the metering valve member from the closed position to the open position defining a variable flow area that increases as the metering valve member moves from the closed position toward the open position. An actuator piston in an actuator bore is exposed to pressure in the common rail. The actuator piston is biased toward a first position corresponding to low pressure in the common rail and movable toward a second position corresponding to maximum pressure in the common rail. The actuator piston includes a valve stop that determines a metering position of the metering valve member.
(FR)
La présente invention concerne une pompe à carburant haute pression comprenant une vanne de dosage d'entrée conçue pour commander une quantité de carburant distribuée à la chambre de pompage pendant le mouvement de rétraction du piston de pompage. La vanne de dosage d'entrée comprend un élément de vanne de dosage mobile entre une position fermée et une position ouverte, le déplacement de l'élément de vanne de dosage de la position fermée à la position ouverte définissant une zone d'écoulement variable qui augmente lorsque l'élément de vanne de dosage se déplace de la position fermée vers la position ouverte. Un piston d'actionneur dans un alésage d'actionneur est exposé à une pression dans la rampe commune. Le piston d'actionneur est sollicité vers une première position correspondant à une basse pression dans la rampe commune et est mobile vers une deuxième position correspondant à une pression maximale dans la rampe commune. Le piston d'actionneur comprend un arrêt de vanne qui détermine une position de dosage de l'élément de vanne de dosage.
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