WO1995020099A1 - Pumping arrangement - Google Patents
Pumping arrangement Download PDFInfo
- Publication number
- WO1995020099A1 WO1995020099A1 PCT/GB1995/000085 GB9500085W WO9520099A1 WO 1995020099 A1 WO1995020099 A1 WO 1995020099A1 GB 9500085 W GB9500085 W GB 9500085W WO 9520099 A1 WO9520099 A1 WO 9520099A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pump
- valve
- pumps
- common
- oil
- Prior art date
Links
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
- F01M1/16—Controlling lubricant pressure or quantity
-
- 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
- This invention relates to oil pumps for I.C. engines. Such pumps are engine driven, and as such, the pump output is nominally proportional to engine speed.
- an engine oil pump comprises a drive shaft connected to a pair of pumps having a common inlet supply and separate but connected outlets, including a diverter valve in one of the outlets effective to return oil from the corresponding pump direct to supply at higher delivery rates/pressures.
- an engine oil pump comprises a drive shaft connected to a pair of gerotor oil pumps having their inlets connected to a common supply, and their outlets connected to a common delivery passage, and with a control valve located between one of the outlets and the delivery passage arranged to divert oil from one of the gerotor sets to the common supply when the valve is open, and with the valve arranged to open automatically at higher pressures/delivery rates.
- the valve may be a simple spring controlled valve. When the pump output pressure is low, the valve remains closed and all output goes to the delivery passage. As pressure rises, primarily with speed of the engine, but possibly also due to reduction in viscosity as in the case of low temperatures the valve opens and allows some and then all of the output from the one gerotor set to bypass the delivery passage and return directly to the supply source, for example the sump.
- the power utilization Of the gerotor set depends upon the outlet pressure: hence by connecting the outlet direct to sump the pressure is effectively zero so that the workload on the pump is relieved and the gerotor set in question uses minimal energy at such time.
- Gerotor pumps are well understood in the art and comprise a male lobed rotor with _n lobes located in a female lobed annulus having n+1 lobes. This forms a series of chambers between the rotor and annulus, each bounded by the pump body in planes normal to the axis of rotation and also bounded by the lines of contact between the parts. As the rotor and annulus rotate albeit at different speeds, the chambers revolve about the axes (the rotor and annulus are on parallel not coincident axes) and vary in size.
- the outlet passage 22 from the pump 14 extends to a sump, that is the same source of supply as the inlet 16, with a pair of connection passages 24 26 extending from the passage 22 to the passage IS.
- Passage 24 communicates pressure from outlet 18 to act upon the control valve 28 which may be spring urged at 30 to the closed positicrn illustrated in Figure 1. In this position ball valve 32 in passages 26 is open to allow flow from passage 22 via 26 to the outlet 20. 3oth passages are effective to deliver oil to the engine and both pumps absorb energy.
- valve 28 moves to open the path in passage 22 direct to the sump, and the ball valve also seats so that there is no flow between passages 18 22 in either direction and the one pump delivers to the engine and the other pump delivers back to the sump. At this time pump 14 uses but little energy.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Details And Applications Of Rotary Liquid Pumps (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
- Rotary Pumps (AREA)
- Details Of Reciprocating Pumps (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB9401089.9 | 1994-01-21 | ||
GB9401089A GB2286017A (en) | 1994-01-21 | 1994-01-21 | Improvements relating to pumps |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1995020099A1 true WO1995020099A1 (en) | 1995-07-27 |
Family
ID=10749088
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB1995/000085 WO1995020099A1 (en) | 1994-01-21 | 1995-01-18 | Pumping arrangement |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0664378A1 (sv) |
JP (1) | JPH07259751A (sv) |
KR (1) | KR950023857A (sv) |
BR (1) | BR9500270A (sv) |
FI (1) | FI945874A (sv) |
GB (1) | GB2286017A (sv) |
NO (1) | NO950195L (sv) |
WO (1) | WO1995020099A1 (sv) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9903241B2 (en) | 2015-11-13 | 2018-02-27 | Briggs & Stratton Corporation | Small air-cooled engine assembly with dry sump lubrication system |
USD854650S1 (en) | 2017-09-15 | 2019-07-23 | Briggs & Stratton Corporation | Oil filter |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3368778B2 (ja) * | 1996-12-11 | 2003-01-20 | スズキ株式会社 | 車両用自動変速装置付2サイクルエンジンのオイル供給装置 |
GB0515494D0 (en) | 2005-07-28 | 2005-08-31 | Bamford Excavators Ltd | Fluid pumping apparatus |
CN100445519C (zh) * | 2006-09-22 | 2008-12-24 | 郑国璋 | 多种燃料柴油机机油增压泵 |
JP6350476B2 (ja) * | 2015-09-30 | 2018-07-04 | マツダ株式会社 | エンジンのオイル供給装置 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5926692A (ja) * | 1982-07-31 | 1984-02-10 | Isuzu Motors Ltd | 車両用潤滑油系の運転制御方法 |
JPS6480717A (en) * | 1987-09-22 | 1989-03-27 | Honda Motor Co Ltd | Engine oil feeding device |
JPH03179177A (ja) * | 1989-12-06 | 1991-08-05 | Saitama Kiki Kk | オイルポンプ装置 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1021000A (en) * | 1965-01-09 | 1966-02-23 | Ford Motor Co | Rotary hydraulic pumps and motors |
US3551081A (en) * | 1969-01-10 | 1970-12-29 | Emerson Electric Co | Hydraulic pump or motor |
IT1119682B (it) * | 1979-03-07 | 1986-03-10 | Fiat Allis Macch Movi | Pompa a afluido per circuiti idraulici |
US4412789A (en) * | 1980-10-31 | 1983-11-01 | Jidosha Kiki Co., Ltd. | Oil pump unit |
GB2108584A (en) * | 1981-10-06 | 1983-05-18 | Newage Transmissions Limited | Oil-pump arrangements |
-
1994
- 1994-01-21 GB GB9401089A patent/GB2286017A/en not_active Withdrawn
- 1994-11-28 EP EP94308750A patent/EP0664378A1/en not_active Withdrawn
- 1994-12-14 FI FI945874A patent/FI945874A/sv unknown
- 1994-12-26 JP JP6340912A patent/JPH07259751A/ja active Pending
- 1994-12-26 KR KR1019940038365A patent/KR950023857A/ko not_active Application Discontinuation
-
1995
- 1995-01-18 WO PCT/GB1995/000085 patent/WO1995020099A1/en unknown
- 1995-01-19 BR BR9500270A patent/BR9500270A/pt not_active Application Discontinuation
- 1995-01-19 NO NO950195A patent/NO950195L/no unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5926692A (ja) * | 1982-07-31 | 1984-02-10 | Isuzu Motors Ltd | 車両用潤滑油系の運転制御方法 |
JPS6480717A (en) * | 1987-09-22 | 1989-03-27 | Honda Motor Co Ltd | Engine oil feeding device |
JPH03179177A (ja) * | 1989-12-06 | 1991-08-05 | Saitama Kiki Kk | オイルポンプ装置 |
Non-Patent Citations (3)
Title |
---|
PATENT ABSTRACTS OF JAPAN vol. 13, no. 287 (M - 844) 30 June 1989 (1989-06-30) * |
PATENT ABSTRACTS OF JAPAN vol. 15, no. 427 (M - 1174) 30 October 1991 (1991-10-30) * |
PATENT ABSTRACTS OF JAPAN vol. 8, no. 120 (M - 300) 6 June 1984 (1984-06-06) * |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9903241B2 (en) | 2015-11-13 | 2018-02-27 | Briggs & Stratton Corporation | Small air-cooled engine assembly with dry sump lubrication system |
USD852319S1 (en) | 2015-11-13 | 2019-06-25 | Briggs & Stratton Corporation | Oil filter |
US10724406B2 (en) | 2015-11-13 | 2020-07-28 | Briggs & Stratton Corporation | Small air-cooled engine assembly with dry sump lubrication system |
US11293312B2 (en) | 2015-11-13 | 2022-04-05 | Briggs & Stratton, Llc | Small air-cooled engine assembly with dry sump lubrication system |
USD854650S1 (en) | 2017-09-15 | 2019-07-23 | Briggs & Stratton Corporation | Oil filter |
USD926286S1 (en) | 2017-09-15 | 2021-07-27 | Briggs & Stratton, Llc | Oil filter |
Also Published As
Publication number | Publication date |
---|---|
FI945874A0 (sv) | 1994-12-14 |
JPH07259751A (ja) | 1995-10-09 |
NO950195L (no) | 1995-07-24 |
FI945874A (sv) | 1995-07-22 |
NO950195D0 (no) | 1995-01-19 |
GB2286017A (en) | 1995-08-02 |
GB9401089D0 (en) | 1994-03-16 |
BR9500270A (pt) | 1995-10-17 |
EP0664378A1 (en) | 1995-07-26 |
KR950023857A (ko) | 1995-08-18 |
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