EP0786047A1 - Vorrichtung mit kraftstoffeinspritzung und schmiermittelfördereinrichtung für verbrennungsmotoren - Google Patents
Vorrichtung mit kraftstoffeinspritzung und schmiermittelfördereinrichtung für verbrennungsmotorenInfo
- Publication number
- EP0786047A1 EP0786047A1 EP96927669A EP96927669A EP0786047A1 EP 0786047 A1 EP0786047 A1 EP 0786047A1 EP 96927669 A EP96927669 A EP 96927669A EP 96927669 A EP96927669 A EP 96927669A EP 0786047 A1 EP0786047 A1 EP 0786047A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- lubricant
- pump
- delivery
- counter
- crankshaft
- 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
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B17/00—Chain saws; Equipment therefor
- B27B17/12—Lubricating devices specially designed for chain saws
-
- 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
- F01M3/00—Lubrication specially adapted for engines with crankcase compression of fuel-air mixture or for other engines in which lubricant is contained in fuel, combustion air, or fuel-air mixture
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B67/00—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for
- F02B67/04—Engines characterised by the arrangement of auxiliary apparatus not being otherwise provided for, e.g. the apparatus having different functions; Driving auxiliary apparatus from engines, not otherwise provided for of mechanically-driven auxiliary apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/04—Feeding by means of driven pumps
- F02M37/06—Feeding by means of driven pumps mechanically driven
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
Definitions
- the device with fuel injection and lubricant delivery device for internal combustion engines can be used wherever a compact arrangement for such a device is to be created, preferably in the case of a chain saw with a plurality of lubrication circuits which can also be regulated if necessary and a fuel delivery with higher pressure.
- the invention relates to a device with fuel injection and lubricant delivery device for internal combustion engines, preferably for hand-operated tools, such as chainsaws, with a helical gear arranged on a crankshaft or driven indirectly by the crankshaft, which meshes with a counter gear for driving the lubricant pump.
- a piston of the lubricant pump forms a bearing journal for the counter wheel and has an oblique end face which bears against a lifting pin which is held in an adjustable manner, by means of which the delivery rate of the lubricant pump can be adjusted.
- the oil pump in question has a cylindrical pump chamber formed in a pump housing with an inlet opening and an outlet opening and a pump piston rotatable in this pump chamber via a gear formed by a helical gear and a counter gear, which is resiliently supported on one side and an end face on the other side Inclined surface which bears against a lifting pin arranged eccentrically to the piston longitudinal axis, so that when the piston rod rotates, an axial movement is generated which is used for pumping.
- the axially adjustable stop allows different strokes of the pump piston to be set.
- This lubricant delivery device is usually flanged to the internal combustion engine as an auxiliary unit block together with the fuel injection.
- the helical gear is in engagement with two counter gears, each of which is connected to a drive shaft for a respective lubricant and / or a fuel pump.
- the fuel injection and / or lubricant delivery devices are effectively combined in the smallest of spaces, the crankshaft being used as the drive element.
- one of the counter wheels is assigned a delivery unit for lubricants on both sides, the two delivery units preferably being able to be driven by a lifting disk on one of the delivery units.
- the aforementioned oblique face of the piston rod serves as the lifting disk here.
- the delivery units for the lubricant have effective piston surfaces of different sizes.
- the other counter wheel preferably drives the fuel pump, which is also designed as a plunger pump.
- a delivery unit can be assigned to one of the counter wheels on both sides, of which one of these delivery units is a continuously operating fuel pump and the other delivery unit is a lubricant pump which is adjustable in the delivery rate.
- the simplest possibility for a stroke adjustment of the conveyor unit is that the lifting pin serving as a stop is connected to an adjusting screw which can be rotated in a thread fixed to the housing and with which the axial position of the lifting pin can be individually adjusted.
- a fixedly adjustable lubricant pump is preferably assigned to the other counter wheel (on the opposite side of the crankshaft).
- an axis above the axes of the counter wheels which is preferably transverse to the crankshaft axis, is suitable as the location for the actuating unit.
- the counter wheel driving the fuel pump is guided axially on both sides in the housing block; the same applies to the counter wheel driving the lubricant delivery device.
- the piston or the lifting disk of the controllable lubricant pump and / or the fuel pump is preferably in rotation with the associated counterwheel, but can be pushed in engagement.
- all lubricant pumps can be designed as controllable delivery units.
- FIG. 1 to 3 in cross section to the crankshaft axis each have different versions of the device according to the invention.
- FIGS. 1 to 3 each have in a housing 10 a helical gear 12 which is arranged on the crankshaft 11 and which engages on opposite sides with counter gears 13 and 14.
- the counter wheel 13 drives the lubricant pump 16 arranged in the housing part 15 via its drive shaft 17, the drive shaft 17 simultaneously forming the piston of the lubricant pump 16 as the bearing journal for the counter wheel 13.
- This piston has a face-side inclined surface 18 as a lifting disk, which bears against a lifting pin 20 held in the housing 15 via an adjusting screw 19.
- the drive shaft 17 carries out oscillating up and down movements, as a result of which the oil (see FIG. 1) conveyed into the inlet connections 21, 22 is pressed under pressure into the outlets 23, 24.
- the drive shaft is supported by the spring 25.
- two drive units 161 and 162 forming the lubricant pump 16 are thus formed by the drive shaft 17, the pumping action of which is different due to the different effective piston surfaces.
- the drive shaft 26 forms a bearing journal for the counter wheel 14 on the opposite side and is used to drive a fuel pump 27, the delivery unit 28 of which sucks in fuel via the inlet connection 29 and pumps it into the outlet connection 30.
- the two drive shafts for the lubricant pump 16 and the fuel pump 27 are aligned parallel to one another. This results in a compact, dense construction, which is advantageous in internal combustion engines for hand-operated tools. Alternatively, it would also be possible to arrange the drive shafts 17 and 26 in a V-shape with respect to one another.
- the helical gear 12 is driven by the crankshaft 11 and engages in the counter gears 13, 14.
- the drive shaft 17 serves as a journal for the counter wheel 13.
- the drive shaft 17 is part of a lubricant pump 16 which conveys the lubricant into the outlet connection 23 via the inlet 21.
- Corresponding identical parts, such as the lifting disk 18, the lifting pin 20 and the adjusting screw 19 and the spring 25, are identified by the same reference numerals as in FIG. 1.
- the counter gear 14 and the drive shaft 26 serve both to drive the fuel pump 27 and to drive the lubricant pump 31, which is arranged above the fuel pump 27.
- the drive shaft 26 has at its upper end an inclined surface on the front side and serving as a lifting disk 32, which acts against an adjustable lifting pin 33 is present.
- An adjusting unit 34 which can be operated via a manual actuating lever 35, is used to adjust the lifting pin in the longitudinal axial direction of the drive shaft 26.
- the piston 36 which is part of the drive shaft 26, conveys lubricant entering the outlet 38 via an inlet 37 in a manner known from the prior art for plunger pumps.
- the actuating unit 34 is arranged above the drive shafts 17 and 26 and transversely to the longitudinal axis of the crankshaft 11.
- the adjustable actuating unit 34 for regulating the pump delivery rate of the lubricant pump 16 is arranged below the counter gears 13 and 14, while the adjusting screw 19 for the axial displacement of the previously described one Lift pin 33 and thus serves to regulate the flow rate of the lubricant pump 31.
- This device which is designed as an auxiliary unit block of an internal combustion engine, in particular for two-stroke engine chain saws, is also of compact design and utilizes the energy available due to the rotation of the crankshaft during engine operation, using only a few components.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19529368A DE19529368C1 (de) | 1995-08-10 | 1995-08-10 | Vorrichtung mit Kraftstoffeinspritzung und Schmiermittelfördereinrichtung für Verbrennungsmotoren |
DE19529368 | 1995-08-10 | ||
PCT/EP1996/003424 WO1997006359A1 (de) | 1995-08-10 | 1996-08-02 | Vorrichtung mit kraftstoffeinspritzung und schmiermittelfördereinrichtung für verbrennungsmotoren |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0786047A1 true EP0786047A1 (de) | 1997-07-30 |
EP0786047B1 EP0786047B1 (de) | 2000-06-07 |
Family
ID=7769128
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP96927669A Expired - Lifetime EP0786047B1 (de) | 1995-08-10 | 1996-08-02 | Vorrichtung mit kraftstoffeinspritzung und schmiermittelfördereinrichtung für verbrennungsmotoren |
Country Status (5)
Country | Link |
---|---|
US (1) | US5787854A (de) |
EP (1) | EP0786047B1 (de) |
AU (1) | AU6741596A (de) |
DE (2) | DE19529368C1 (de) |
WO (1) | WO1997006359A1 (de) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19808887A1 (de) * | 1998-03-03 | 1999-09-09 | Dolmar Gmbh | Handarbeitsgerät mit 2-Takt-Brennkraftmaschine und Getrenntschmierung sowie kombinierte Förder/Dosierpumpe für ein solches Handarbeitsgerät |
US5964198A (en) * | 1998-04-29 | 1999-10-12 | Industrial Technology Research Institute | Lubrication system of internal combustion engine |
DE20006638U1 (de) | 2000-04-11 | 2001-08-30 | Dolmar Gmbh | Medienpumpe |
US6644250B1 (en) * | 2000-09-27 | 2003-11-11 | Bombardier Motor Corporation Of America | Engine oiling system and an oil system distribution manifold, and method of use |
DE102004036555A1 (de) * | 2003-08-01 | 2005-03-03 | Andreas Stihl Ag & Co. Kg | Pumpsystem zur Förderung von Schmieröl |
US7299780B1 (en) * | 2004-06-05 | 2007-11-27 | Thompson Brian M | Dual high-pressure lube-oil pumps for diesel fuel injection |
DE102010016357A1 (de) * | 2010-04-07 | 2011-10-13 | A. T. Süd GmbH | Verbrennungskraftmaschine mit Kraftstoffpumpe |
SE539242C2 (sv) * | 2013-12-05 | 2017-05-30 | Scania Cv Ab | Drivarrangemang för en bränslepump |
US9862116B2 (en) | 2014-11-20 | 2018-01-09 | Black & Decker Inc. | Dual speed gearboxes, transmissions, and apparatuses incorporating the same |
Family Cites Families (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DD41648A (de) * | ||||
JPS4937260A (de) * | 1972-08-14 | 1974-04-06 | ||
DK169775A (da) * | 1974-04-30 | 1975-10-31 | A Batscheider | Fremgangsmade til naturlig vitaminisering af korn |
US3938622A (en) * | 1974-10-17 | 1976-02-17 | Outboard Marine Corporation | Chain saw oil pump with overload protection |
US4411602A (en) * | 1979-02-12 | 1983-10-25 | Ray Earl L | Fuel injection apparatus for internal combustion engines |
US4383504A (en) * | 1981-11-23 | 1983-05-17 | Outboard Marine Corporation | Marine propulsion device with mechanical fuel pressure operated device for supplying a fuel/oil mixture |
US4539949A (en) * | 1981-10-08 | 1985-09-10 | Outboard Marine Corporation | Combined fluid pressure actuated fuel and oil pump |
JPS5937260A (ja) * | 1982-08-24 | 1984-02-29 | Yanmar Diesel Engine Co Ltd | 内燃機関用燃料噴射装置 |
JPS6030427A (ja) * | 1983-07-29 | 1985-02-16 | Iseki & Co Ltd | エンジンの附隨機構部連動装置 |
US4551076A (en) * | 1983-10-07 | 1985-11-05 | Outboard Marine Corporation | Fluid driven pump with one-way valve in fluid inlet |
DE3341658C2 (de) * | 1983-11-18 | 1986-07-10 | GerroKaiser Dosenwerk GmbH & Co KG, 4350 Recklinghausen | Vorrichtung zum Schmieren einer Kette |
SE463221B (sv) * | 1985-08-21 | 1990-10-22 | Tetra Pak Ab | Doseringspump |
SE458265C (sv) * | 1985-11-11 | 1991-03-26 | Electrolux Ab | Anordning med oljepump |
JPS62253927A (ja) * | 1986-04-28 | 1987-11-05 | Sanshin Ind Co Ltd | 燃料噴射機関 |
DE3735711C2 (de) * | 1987-10-22 | 1995-03-16 | Stihl Maschf Andreas | Zweitaktmotor mit pneumatisch betätigter Einspritzpumpe zum Antrieb eines Arbeitsgerätes |
DE3818802C2 (de) * | 1988-06-03 | 1994-05-26 | Baier & Koeppel | Schmiermittelpumpe mit einer Hubbetätigung eines Förderkolbens und mit einer einstellbaren Dosierung |
US5315971A (en) * | 1991-07-15 | 1994-05-31 | Yamaha Hatsudoki Kabushiki Kaisha | Lubricating oil supplying device for engine |
DE9203378U1 (de) * | 1992-03-13 | 1992-04-23 | Dolmar Gmbh, 2000 Hamburg, De |
-
1995
- 1995-08-10 DE DE19529368A patent/DE19529368C1/de not_active Expired - Fee Related
-
1996
- 1996-08-02 AU AU67415/96A patent/AU6741596A/en not_active Abandoned
- 1996-08-02 US US08/817,240 patent/US5787854A/en not_active Expired - Fee Related
- 1996-08-02 DE DE59605397T patent/DE59605397D1/de not_active Expired - Fee Related
- 1996-08-02 WO PCT/EP1996/003424 patent/WO1997006359A1/de active IP Right Grant
- 1996-08-02 EP EP96927669A patent/EP0786047B1/de not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9706359A1 * |
Also Published As
Publication number | Publication date |
---|---|
DE59605397D1 (de) | 2000-07-13 |
WO1997006359A1 (de) | 1997-02-20 |
EP0786047B1 (de) | 2000-06-07 |
DE19529368C1 (de) | 1996-10-31 |
US5787854A (en) | 1998-08-04 |
AU6741596A (en) | 1997-03-05 |
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