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EP1435456A3 - Hydraulic Pump - Google Patents

Hydraulic Pump Download PDF

Info

Publication number
EP1435456A3
EP1435456A3 EP03257660A EP03257660A EP1435456A3 EP 1435456 A3 EP1435456 A3 EP 1435456A3 EP 03257660 A EP03257660 A EP 03257660A EP 03257660 A EP03257660 A EP 03257660A EP 1435456 A3 EP1435456 A3 EP 1435456A3
Authority
EP
European Patent Office
Prior art keywords
pump
delivery
fuel
plunger
filling
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP03257660A
Other languages
German (de)
French (fr)
Other versions
EP1435456B1 (en
EP1435456A2 (en
Inventor
Geoffrey D Bootle
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Delphi Technologies Inc
Original Assignee
Delphi Technologies Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Delphi Technologies Inc filed Critical Delphi Technologies Inc
Publication of EP1435456A2 publication Critical patent/EP1435456A2/en
Publication of EP1435456A3 publication Critical patent/EP1435456A3/en
Application granted granted Critical
Publication of EP1435456B1 publication Critical patent/EP1435456B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/0404—Details or component parts
    • F04B1/0408—Pistons
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B1/00—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders
    • F04B1/04—Multi-cylinder machines or pumps characterised by number or arrangement of cylinders having cylinders in star- or fan-arrangement
    • F04B1/06—Control
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
    • F04B49/12—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by varying the length of stroke of the working members
    • F04B49/121—Lost-motion device in the driving mechanism
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
    • F04B7/00—Piston machines or pumps characterised by having positively-driven valving
    • F04B7/04—Piston machines or pumps characterised by having positively-driven valving in which the valving is performed by pistons and cylinders coacting to open and close intake or outlet ports

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Fuel-Injection Apparatus (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

A sinusoidal hydraulic pump that is particularly suitable for use as a high pressure pump for a fuel injection system of a compression ignition engine. The pump includes first and second plungers, a filling plunger (110) and a delivery plunger (112), each of which is reciprocable within a respective bore (120, 122) provided in a pump housing (124) under the influence of a respective cam (114, 116) mounted upon a common cam shaft (118). The bores (120, 122) communicate with each other at their uppermost ends (in the orientation shown) and define, together with end surfaces of the filling and delivery plungers (110, 112), a pump chamber (126) for receiving fuel through a pump inlet port (130) provided in a wall of the pump housing (124). The filling plunger (110) cooperates with the inlet port (130) to provide a means for controlling fuel flow into the pump chamber (126) from a low pressure fuel supply. A delivery port (132) is also provided in the pump housing (124) in the region of the bore (122), and the outer surface of the delivery plunger (112) cooperates with the delivery port (132) to provide a means for controlling the delivery of pressurised fuel from the pump chamber (126) to a high pressure fuel volume. <IMAGE>
EP03257660A 2002-12-06 2003-12-05 Hydraulic Pump Expired - Lifetime EP1435456B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0228559 2002-12-06
GBGB0228559.1A GB0228559D0 (en) 2002-12-06 2002-12-06 Hydraulic pump

Publications (3)

Publication Number Publication Date
EP1435456A2 EP1435456A2 (en) 2004-07-07
EP1435456A3 true EP1435456A3 (en) 2005-05-11
EP1435456B1 EP1435456B1 (en) 2006-06-21

Family

ID=9949250

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03257660A Expired - Lifetime EP1435456B1 (en) 2002-12-06 2003-12-05 Hydraulic Pump

Country Status (4)

Country Link
EP (1) EP1435456B1 (en)
AT (1) ATE331139T1 (en)
DE (1) DE60306319T2 (en)
GB (1) GB0228559D0 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008064303A2 (en) * 2006-11-21 2008-05-29 Actuant Corporation Air driven hydraulic pump
KR101030794B1 (en) * 2010-07-27 2011-04-27 천세산업 주식회사 Pulseless metering pump using dual constant velocity cam

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3285192A (en) * 1963-10-30 1966-11-15 Gutkowski Janusz Pumps
GB2065790A (en) * 1979-11-17 1981-07-01 Frieseke & Hoepfner Gmbh Improvements in or Relating to a Pump
US5890417A (en) * 1995-07-31 1999-04-06 Samsung Electronics Co., Ltd. Piston for a reciprocating compressor
EP1184568A2 (en) * 2000-08-31 2002-03-06 Delphi Technologies, Inc. Fuel pump

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3285192A (en) * 1963-10-30 1966-11-15 Gutkowski Janusz Pumps
GB2065790A (en) * 1979-11-17 1981-07-01 Frieseke & Hoepfner Gmbh Improvements in or Relating to a Pump
US5890417A (en) * 1995-07-31 1999-04-06 Samsung Electronics Co., Ltd. Piston for a reciprocating compressor
EP1184568A2 (en) * 2000-08-31 2002-03-06 Delphi Technologies, Inc. Fuel pump

Also Published As

Publication number Publication date
GB0228559D0 (en) 2003-01-15
DE60306319D1 (en) 2006-08-03
EP1435456B1 (en) 2006-06-21
DE60306319T2 (en) 2007-06-14
ATE331139T1 (en) 2006-07-15
EP1435456A2 (en) 2004-07-07

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