EP1435460A2 - Pompe de refoulement et pompe de balayage - Google Patents

Pompe de refoulement et pompe de balayage Download PDF

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Publication number
EP1435460A2
EP1435460A2 EP03029827A EP03029827A EP1435460A2 EP 1435460 A2 EP1435460 A2 EP 1435460A2 EP 03029827 A EP03029827 A EP 03029827A EP 03029827 A EP03029827 A EP 03029827A EP 1435460 A2 EP1435460 A2 EP 1435460A2
Authority
EP
European Patent Office
Prior art keywords
pump
feed
scavenge
bores
pumps
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.)
Withdrawn
Application number
EP03029827A
Other languages
German (de)
English (en)
Other versions
EP1435460A3 (fr
Inventor
Anthony Waterworth
Graham Waterworth
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of EP1435460A2 publication Critical patent/EP1435460A2/fr
Publication of EP1435460A3 publication Critical patent/EP1435460A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04C—ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; ROTARY-PISTON, OR OSCILLATING-PISTON, POSITIVE-DISPLACEMENT PUMPS
    • F04C11/00—Combinations of two or more machines or pumps, each being of rotary-piston or oscillating-piston type; Pumping installations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/02—Pressure lubrication using lubricating pumps
    • F01M2001/0207—Pressure lubrication using lubricating pumps characterised by the type of pump
    • F01M2001/0238—Rotary pumps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/12—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10
    • F01M2001/123—Closed-circuit lubricating systems not provided for in groups F01M1/02 - F01M1/10 using two or more pumps

Definitions

  • the invention to which this application relates is to the provision of a feed and scavenge pump arrangement for use in pumping apparatus generally but typically, as oil pumps for use in engines such as those, but not necessarily exclusively, used in motor cycles.
  • the pump arrangement is provided to, when used for oil purposes, perform two functions, a feed pump arrangement being provided to allow the provision of lubricating oil to crank shaft bearings of the engine and the scavenging pump allowing the scavenging or removal of oil from the engine sump.
  • Both the feed and scavenge pump components are connected to an oil reservoir from which the oil is pumped and returned by respective pumps.
  • the feed pump draws oil from the oil reservoir and feeds the same to the crankshaft whilst the scavenge pump draws oil from the sump and returns it to the reservoir such that, in combination, there is always sufficient oil passing throughout the system to allow the feed and scavenge pumps to operate, and the components of the engine to be fed with oil as required.
  • Another particular problem is that the components of the arrangement can be difficult to manufacture and this in turn can add to the expense of the components to the customer and/or the motor cycle manufacturer.
  • the aim of the present invention is to provide an improved feed pump and scavenging pump arrangement and components for the same in an improved manner which allows an increase in efficiency of operation of the pump and also, at the same time, improved ease of manufacture of the components.
  • apparatus for the movement of fluid said apparatus including a feed pump and scavenge pump for use in conjunction with a reservoir which liquid is moved to and from by the feed pump and scavenge pump
  • said pumps each include inner and outer rotary pump members housed in respective pump chambers in a body portion, with said inner rotary pump members mounted for rotation by a driveshaft; said body portion including formed therein, inlet and outlet bores in connection with respective feed and scavenge pump chambers, said bores formed in the body to allow connection with a crankshaft and reservoir for the feed pump and a sump and reservoir for the scavenging pump, and characterised in that each of said bores are provided with a first end opening on a first side of the body and an opposing end terminating at a respective pump chamber.
  • the bores are provided with a first end opening on the underside of the body and an opposing end terminating at a respective pump chamber surface lying in a plane substantially perpendicular to the axis of rotation of the driveshaft for the inner rotary pump members.
  • the four bores formed in the body curve with respect to at least two of, but more typically the three, XYZ axes.
  • the body of the arrangement is metal and formed by casting.
  • each of the pumps comprise a pumping chamber with an outer rotary pump member and an inner rotary pump member, said inner rotary pumping member mounted eccentrically with respect to the outer rotary pump member and mounted for rotation on a driveshaft.
  • the outer rotary pumping member in each pump arrangement is mounted to be driven by the inner rotary member.
  • the driveshaft is common to both inner rotary pumping elements.
  • said drive shaft is controlled by a gearbox to rotate in forward and reverse directions for predetermined periods of time therefore allowing staggered operation of the respective feed and scavenge pumps in an episoidal manner.
  • the pump arrangement is provided to be retrofitted as replacement components to an existing engine, typically that of a motor cycle and, as a result, certain fixing locations are required to be maintained in the standard positions.
  • the bores are therefore formed in the body so as to avoid conflict with the fixing locations within the body portion.
  • the openings for the bores from the body are also provided to be at locations to allow connection with the conventional connections with the crankshaft, sump and oil reservoir ports as required.
  • the components of the arrangement are sintered and heat treated as required to ensure that the same have the required wear characteristics.
  • a A feed pump for removing liquid and a scavenge pump for introducing liquid from and to an oil reservoir of an engine said feed and scavenge pumps including inner and outer rotary pump members housed in respective pump chambers in a body portion, said inner rotary pump members each mounted on a common driveshaft and said body portion including formed therein, inlet and outlet bores in connection with respective feed and scavenge pump chambers, said bores formed in the body to allow connection with the crankshaft and reservoir for the feed pump chamber and a sump and reservoir for the scavenging pump chamber and characterised in that each of said bores are provided with a first end opening on a first side of the body and an opposing end terminating at a respective pump chamber surface lying in a plane substantially perpendicular to the axis of rotation of the driveshaft of the inner rotary pump members.
  • FIG. 1 there is illustrated the components of a pump arrangement according to one embodiment of the invention.
  • the components comprise a body portion 2 which receives therein a drive shaft 4.
  • the drive shaft has a first end on which a gear wheel 6 is mounted in engagement with a gear assembly 9 provided in a port 11 in housing 8, shown in Figure 4 which is connected to the body via plate 10.
  • a pump chamber 28 Provided between the plate 10 and body 2, in a pump chamber 28 are outer and inner rotary pump members 14,16 for the feed pump.
  • outer and inner rotary pump members 18,20 form, in conjunction with a chamber 39 in the body and the end plate 22, the scavenge pump arrangement.
  • Figure 2 illustrates a typical arrangement of the components when brought in to position for use with respect to the sump, engine crankshaft and oil reservoir, shown generally as reference numeral 24 as these components are provided in the conventional form. What is not shown in Figure 2 is the detail of the internal features of the body 2 and these are shown in Figures 3a-e.
  • FIG. 3e there is shown an end face 26 of the body 2 with a feed pump chamber 28 and aperture 30 through which the drive shaft 4 passes.
  • the inner and outer rotary pump members 14, 16 lie in the pump chamber 28. Also illustrated are the openings for two bores 32,34 with the other ends of these bores located on the underside 36 of the body and indicated by the numerals 32',34' respectively.
  • the bores 32, 34 are provided to allow, as these are for the feed pump arrangement, the passage of oil through a first bore from the oil reservoir into the pump chamber 28 and then to be pumped by movement of the inner and outer rotary members 14, 16 in the chamber 28 through the other of the bores to lubricate the engine crankshaft.
  • the various views illustrate the internal paths of the bores 32,34 for the feed pump arrangement and also the paths of the bores 38,40 for the scavenge pump arrangement from the pump chamber 39 to the openings 38', 40' illustrated on the underside 36 of the body.
  • the rotary pump members achieve the recovery of oil through a first one of the bores 38,40 from the engine sump with which the bore is connected, into the chamber 39, and then from the chamber by rotation of the inner and outer rotary members 28, 20, through the other of the bores 38,40 to the oil reservoir for subsequent use.
  • the gear assembly 9 is controlled to rotate the drive shaft 4.
  • the inner rotary pump members 16 and 20 of the feed and scavenging pumps respectively, are mounted on the drive shaft at respective ends of the body 2 so as to be driven to rotate by the drive shaft in their respective chambers 28,39.
  • the inner rotary members are eccentrically mounted with respect to their respective outer rotary members 14, 18 and the engagement of the protrusions 51 on the same as shown in Figure 3c ensures that the outer rotary members are also driven to rotate and the pumping of the oil is achieved in the gap between the inner and outer rotary members as they rotate.
  • the relative movement between the protrusions of the inner and outer rotary members creates the pumping action in the respective chambers and hence the passage of the oil through the bores.
  • the drive shaft 4 is driven by the gear shaft 9 to move in forward and reverse rotational directions in an episoidal manner thereby allowing the feed and scavenging pumps to operate in successive periods.
  • This therefore means that there is no need for a gearing assembly to be provided for either of the feed pump or scavenging pump in the body 2 and therefore overcomes problems with the conventional wear of the gear components while at the same time improving the functionality of the arrangement.
  • each of the bores in the body 2 is such as to allow the conventional location formations to be maintained as well as the location of the bores on the underside 36 of the body thereby allowing the arrangement of this invention to be retrofitted to existing engines which is an important market.
  • the bores are provided to enter the pump chamber on the surfaces 53, 55 which are substantially perpendicular to the axis of rotation 57 of the driveshaft and which are the surfaces on which the aperture 30 is formed so as to allow the end feeding of the oil into and from the chambers 28, 39 which is in contrast to the conventional feeding of the oil from the side walls of the chamber.
  • each of the bores is provided to curve with respect to at least two of the XY and Z axis but more typically all three axes as is illustrated in the accompanying figures.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Of Internal Combustion Engines (AREA)
EP03029827A 2003-01-06 2003-12-24 Pompe de refoulement et pompe de balayage Withdrawn EP1435460A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GBGB0300183.1A GB0300183D0 (en) 2003-01-06 2003-01-06 Feed and scavenge pump arrangement
GB0300183 2003-01-06

Publications (2)

Publication Number Publication Date
EP1435460A2 true EP1435460A2 (fr) 2004-07-07
EP1435460A3 EP1435460A3 (fr) 2006-07-19

Family

ID=9950690

Family Applications (1)

Application Number Title Priority Date Filing Date
EP03029827A Withdrawn EP1435460A3 (fr) 2003-01-06 2003-12-24 Pompe de refoulement et pompe de balayage

Country Status (3)

Country Link
US (1) US20040156729A1 (fr)
EP (1) EP1435460A3 (fr)
GB (1) GB0300183D0 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2006301289A (ja) * 2005-04-20 2006-11-02 Tokyo Ohka Kogyo Co Ltd ネガ型レジスト組成物およびレジストパターン形成方法
US7878303B2 (en) * 2006-11-14 2011-02-01 Rolls-Royce Corporation Lubrication scavenge system
US7789200B2 (en) 2006-11-14 2010-09-07 Rolls-Royce Corporation Sump housing
JP5589358B2 (ja) * 2009-11-12 2014-09-17 カルソニックカンセイ株式会社 コンプレッサ
EP3364002B1 (fr) * 2015-10-16 2020-08-26 Yamaha Hatsudoki Kabushiki Kaisha Unité d'entraînement pour véhicules à enfourcher

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016834A (en) * 1957-10-07 1962-01-16 Eaton Mfg Co Rotary pumps
GB2178110A (en) * 1985-07-09 1987-02-04 Anthony Waterworth Rotary pump construction

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US175816A (en) * 1876-04-11 Improvement in rotary engines
US2931303A (en) * 1957-04-15 1960-04-05 Borg Warner Pump
GB8517304D0 (en) * 1985-07-09 1985-08-14 Waterworth A Pumps
JP3915241B2 (ja) * 1998-04-22 2007-05-16 株式会社デンソー 複数の回転式ポンプを備えたポンプ装置及びその組付け方法

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3016834A (en) * 1957-10-07 1962-01-16 Eaton Mfg Co Rotary pumps
GB2178110A (en) * 1985-07-09 1987-02-04 Anthony Waterworth Rotary pump construction

Also Published As

Publication number Publication date
US20040156729A1 (en) 2004-08-12
EP1435460A3 (fr) 2006-07-19
GB0300183D0 (en) 2003-02-05

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