EP0774068B1 - Einspritzpumpe für dieselmotor - Google Patents
Einspritzpumpe für dieselmotor Download PDFInfo
- Publication number
- EP0774068B1 EP0774068B1 EP94910406A EP94910406A EP0774068B1 EP 0774068 B1 EP0774068 B1 EP 0774068B1 EP 94910406 A EP94910406 A EP 94910406A EP 94910406 A EP94910406 A EP 94910406A EP 0774068 B1 EP0774068 B1 EP 0774068B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- pump
- foot
- injection pump
- rocker
- idler
- 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.)
- Expired - Lifetime
Links
Images
Classifications
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/102—Mechanical drive, e.g. tappets or cams
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/44—Details, components parts, or accessories not provided for in, or of interest apart from, the apparatus of groups F02M59/02 - F02M59/42; Pumps having transducers, e.g. to measure displacement of pump rack or piston
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
Definitions
- the invention relates to an injection pump for Diesel engines with one in the pump cylinder Pump piston with a widened foot and by means of a camshaft driven spring-loaded rocker arm is operated, by its pump end over a pressure roller directly with the foot surface of the pump piston cooperates.
- Such an injection pump is also known (US-A-1 451 228) in which the outer end of the Pump piston by means of a screw-on head is widened to which one at the end of a Rocker arm mounted pressure roller acts. In order to the pressure roller is securely in contact is the pump piston strained against it by means of a compression spring.
- the present invention Task based on an injection pump type mentioned above, on the pump piston largely avoid acting transverse forces and at the same time the constructive execution of the Simplify the piston guide of the injection pump and to make it cheaper.
- Such an injection pump is not omitted only any tappet drive for the pump piston with associated linear guide and the usual Piston spring; instead of an elaborate and voluminous Pump housing, are only the pump cylinder with associated valve carrier available.
- the entire pump component sits in a corresponding Bore the crankcase and there is a rocker arm operated directly from the camshaft driven.
- the rocker arm is supported by a pressure spring, so that the rocker arm is always in contact with the Camshaft drive cam holds; the pump side
- the end of the rocker arm is over a driver loosely coupled to the foot of the pump piston.
- the entire associated assembly including piston spring, guide sleeve and this surrounding housing part.
- the pressure roller that actuates the pump piston is expediently from an outer and an inner role assembled, which coaxially fit closely together are and thus over an oil film in the space between the roles allow a certain tolerance compensation. This allows the advantageous line contact between the foot surface of the pump piston and the pressure roller will.
- the driver is at the end of the rocker arm for assembly purposes pivotally attached and engages in a widened foot in the final installation position of the pump piston with a catch plate, such that the foot between the catch plate and the pressure roller is recorded. To friction and constraints too avoid, it is intended that the foot between the Catch plate and the pressure roller with little play is recorded.
- the invention When forming the foot of the pump piston the invention dispenses with the usual there provided as a stop surface central projection in favor of a corresponding widening of the Foot surface (so-called pressure sun), creating a beneficial line touch is achieved with the pressure roller.
- crankshaft 1 is in the case of a diesel engine Camshaft 1 with cam 2, a rocker arm 3 assigned to drive the injection pump 4.
- the crankshaft 5 is a Pitch circle 6 drawn pinion with one a toothing drawn as a pitch circle 7 engages, which in turn the camshaft 1 drives.
- the rocker arms 8, 9 for the AuslaB- or the Inlet valve actuated Over the same cam 2 of the camshaft 1 in addition to the rocker arm 3 also the rocker arms 8, 9 for the AuslaB- or the Inlet valve actuated.
- the rocker arm 3 for the Actuation of the injection pump 4 is on a counter cam at its camshaft end 10, on the other hand on the rocker arm 3 Compression spring 11 is supported, which causes that the counter cam 10 always with the cam 2 the camshaft maintains 1 contact.
- the rocker arm 3 pivots about its motor-fixed Axis of rotation 12; the extension of the rocker arm 3 ends beyond the axis of rotation 12 with a fork part 13 on which one Cross pin 14 rotatably a pressure roller 15, consisting of an outer roller 16 and one Inner roller 17 is mounted.
- a pressure roller 15 On the pressure roller 15 is based on a widened Foot 18 the associated end of the pump piston 19 from.
- the foot 18 is with tight play between 0.05 and 0.1 mm held between the Pressure roller 17 and also around Transverse axis 14 pivotally mounted driver 20, the catch plate 21 on the top of the Piston foot 18 is arranged.
- the pump piston 19 is guided linearly in the pump cylinder 22 surrounding it with a Bore 23 for the fuel supply and a bore 24 for the fuel return line.
- a control device 26 for the adjustment thereof, that shown in more detail in Fig. 2 in plan view is serves.
- the engine is controlled by means of the control device 26 the pump piston 19 to its Longitudinal axis rotated in the direction of the double arrow 27.
- the twisting takes place by means of a Push rod 28, between the guide washers 29 the adjusting bolt received between them 30 and with this a rotationally fixed with the Pump piston 19 connected pivot part 31 is operated.
- the pump cylinder 22 is in the upper part Valve carrier with the valves 32, 33 formed and sits in a bore 34 one Pipe fitting 35, which the fuel pressure line 36 contains.
- the catch plate 21 of the driver 20 has one side openings 37 through which the Piston foot 18 can be threaded before the catch plate 21 over the foot 18 in the End position shown in the direction of arrow 38 is pivoted.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Description
- Fig. 1
- in schematischer Darstellung einen Quersschnitt durch die Nockenwelle mit zugeordneter Einspritzpumpe und
- Fig. 2
- einen Schnitt gemäß II-II der Fig. 1.
Claims (6)
- Einspritzpumpe (4) für Dieselmotor mit einem im Pumpenzylinder (22) geführten Pumpenkolben (19), der einen verbreiterten Fuß (18) aufweist und mittels eines von einer Nockenwelle (1) angetriebenen Kipphebels (3) betätigt wird, indem dessen pumpenseitiges Ende über eine Andrückrolle (15) direkt mit der Fußfläche des Pumpenkolbens (19) zusammenwirkt,
dadurch gekennzeichnet,
daß am Kipphebel (3) entfernt von seinem pumpenseitigen Ende eine Feder (11) angreift, welche den Kipphebel (3) gegen einen Nocken (2) der Nockenwelle (1) spannt und daß Fuß (18) und Andrückrolle (15) durch einen Mitnehmer (20) lose miteinander verbunden sind. - Einspritzpumpe nach Anspruch 1,
dadurch gekennzeichnet,
daß die axiale Abmessung der Andrückrolle (15) etwa dem Durchmesser der Fußfläche des Pumpenkolbens (19) entspricht und daß die Fußfläche zur Erzielung einer Linienberührung eben ausgebildet ist. - Einspritzpumpe gemäß Anspruch 1,
dadurch gekennzeichnet,
daß die Andrückrolle (15) aus einer Außen-(16) und einer Innenrolle (17) zusammengesetzt ist, die koaxial eng ineinandergepaßt sind. - Einspritzpumpe gemäß Anspruch 1,
dadurch gekennzeichnet,
daß der Mitnehmer (15) am zugeordneten Ende des Kipphebels (3) befestigt ist und den verbreiterten Fuß (18) des Pumpenkolbens (19) mit einem Fangblech (21) hintergreift. - Einspritzpumpe gemäß Anspruch 4,
dadurch gekennzeichnet,
daß der Fuß (18) des Pumpenkolbens (19) mit engem Spiel zwischen dem Fangblech (21) und der Andrückrolle (15) aufgenommen ist. - Einspritzpumpe gemäß Ansprüchen 1,
dadurch gekennzeichnet,
daß der Mitnehmer (15) koaxial mit der Andrückrolle (15) schwenkbar am Kipphebel (3) gelagert ist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4307699A DE4307699C2 (de) | 1993-03-11 | 1993-03-11 | Einspritzpumpe für Dieselmotor |
DE4307699 | 1993-03-11 | ||
PCT/EP1994/000746 WO1994020748A1 (de) | 1993-03-11 | 1994-03-10 | Einspritzpumpe für dieselmotor |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0774068A1 EP0774068A1 (de) | 1997-05-21 |
EP0774068B1 true EP0774068B1 (de) | 1998-06-10 |
Family
ID=6482510
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94910406A Expired - Lifetime EP0774068B1 (de) | 1993-03-11 | 1994-03-10 | Einspritzpumpe für dieselmotor |
Country Status (6)
Country | Link |
---|---|
EP (1) | EP0774068B1 (de) |
JP (1) | JP3476822B2 (de) |
CN (1) | CN1035125C (de) |
AU (1) | AU6283994A (de) |
DE (2) | DE4307699C2 (de) |
WO (1) | WO1994020748A1 (de) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5957673A (en) * | 1993-03-11 | 1999-09-28 | Motorenfabrik Hatz Gmbh & Co. Kg. | Injection pump for diesel engines |
SE501026C2 (sv) * | 1993-03-17 | 1994-10-24 | Volvo Ab | Bränsleinsprutningsanordning för förbränningsmotorer |
US5588413A (en) * | 1995-03-14 | 1996-12-31 | Caterpillar Inc. | Engine assembly with leaf spring cam follower |
CN104053867B (zh) * | 2011-12-27 | 2016-12-07 | 丰田自动车株式会社 | 驱动装置 |
CN102953952A (zh) * | 2012-11-22 | 2013-03-06 | 无锡惠山泵业有限公司 | 机动车引擎上的油泵 |
CN102953954A (zh) * | 2012-11-22 | 2013-03-06 | 无锡惠山泵业有限公司 | 电动油泵 |
CN102953971B (zh) * | 2012-11-22 | 2016-04-06 | 江苏高博智融科技有限公司 | 延寿油泵 |
DE102014223597B4 (de) * | 2014-10-08 | 2019-02-07 | Continental Automotive Gmbh | Rolle für einen Rollenstößel einer Kraftstoffhochdruckpumpe, Rollenstößel, Kraftstoffhochdruckpumpe und Brennkraftmaschine |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1451228A (en) * | 1919-07-26 | 1923-04-10 | Dodge Tool Company | Fuel-feeding device for internal-combustion engines |
DE408310C (de) * | 1922-11-14 | 1925-01-10 | Steiner Carl | Ventilsteuerung mit winkelfoermigem Kipphebel, insbesondere fuer Verbrennungskraftmaschinen |
GB294427A (en) * | 1927-12-15 | 1928-07-26 | Edward Ronald D Alessio | Improvements in and relating to valve-operating mechanism in internal combustion engines |
US2424943A (en) * | 1943-02-26 | 1947-07-29 | Cav Ltd | Fuel pump |
CH348289A (fr) * | 1958-08-02 | 1960-08-15 | Cardelli Dino | Pompe à injection pour moteur à combustion interne |
DE1919993A1 (de) * | 1969-04-19 | 1970-11-05 | Volkswagenwerk Ag | Halter fuer Schwinghebel von Ventilsteuerungen |
AT366474B (de) * | 1979-10-15 | 1982-04-13 | Friedmann & Maier Ag | Einspritzpumpe fuer brennkraftmaschinen |
-
1993
- 1993-03-11 DE DE4307699A patent/DE4307699C2/de not_active Expired - Fee Related
-
1994
- 1994-03-10 EP EP94910406A patent/EP0774068B1/de not_active Expired - Lifetime
- 1994-03-10 CN CN94191437A patent/CN1035125C/zh not_active Expired - Fee Related
- 1994-03-10 AU AU62839/94A patent/AU6283994A/en not_active Abandoned
- 1994-03-10 DE DE59406244T patent/DE59406244D1/de not_active Expired - Fee Related
- 1994-03-10 WO PCT/EP1994/000746 patent/WO1994020748A1/de active IP Right Grant
- 1994-03-10 JP JP51960294A patent/JP3476822B2/ja not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
CN1119034A (zh) | 1996-03-20 |
DE4307699C2 (de) | 1996-03-28 |
JPH08510026A (ja) | 1996-10-22 |
EP0774068A1 (de) | 1997-05-21 |
AU6283994A (en) | 1994-09-26 |
DE59406244D1 (de) | 1998-07-16 |
WO1994020748A1 (de) | 1994-09-15 |
DE4307699A1 (de) | 1994-09-15 |
JP3476822B2 (ja) | 2003-12-10 |
CN1035125C (zh) | 1997-06-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE102007027979B4 (de) | Ventiltrieb für Gaswechselventile einer Brennkraftmaschine mit Nockenwellen-Tunnellager | |
EP0659232B1 (de) | Verfahren und vorrichtung zur variablen steuerung eines ventils einer brennkraftmaschine | |
EP0543301B1 (de) | Brennkraftmaschine | |
AT404288B (de) | Motorbremse bei einer brennkraftmaschine für kraftfahrzeuge | |
DE4220816A1 (de) | Variable Ventilsteuerung mittels Änderung der Hebelverhältnisse bei Kipp- oder Schlepphebeln von Ventiltrieben | |
DE68904693T2 (de) | Vorrichtung zum umschalten der betriebsart der ventile in einer brennkraftmaschine. | |
EP0774068B1 (de) | Einspritzpumpe für dieselmotor | |
DE19540133C2 (de) | Ventilstößel | |
DE19701203A1 (de) | Variable Ventilsteuerung für Brennkraftmaschinen | |
WO1999056008A1 (de) | Abstützelement für einen schlepphebel eines ventiltriebs einer brennkraftmaschine | |
DE10142329A1 (de) | Ventiltrieb für eine Brennkraftmaschine | |
DE10006015B4 (de) | Variabler Ventiltrieb zur Laststeuerung einer fremdgezündeten Brennkraftmaschine | |
DE4404683C1 (de) | Verfahren zur Minimierung von Spiel in einem Ventiltrieb | |
DE19914046A1 (de) | Als Kipp- oder Schwinghebel ausgebildeter Nockenfolger eines Ventiltriebs einer Brennkraftmaschine | |
DE10121798A1 (de) | Ventiltrieb für eine Brennkraftmaschine | |
DE4334395C2 (de) | Nocken-Umschaltmechanismus für Motoren | |
DE19745761A1 (de) | Variable Ventilsteuerung für Hubkolben-Brennkraftmaschinen | |
DE10205216B4 (de) | Betätigungsvorrichtung mit variablem Hub für ein oszilierendes Bauteil | |
DE3109253A1 (de) | Dekompressionseinrichtung an brennkraftmaschinen | |
DE10028473B4 (de) | Vorrichtung eingerichtet zur Dekompression einer ventilgesteuerten Brennkraftmaschine | |
DE3148720A1 (de) | Ventilsteuerung fuer kolben-brennkraftmaschinen | |
DE3323761C2 (de) | ||
EP0914554B1 (de) | Pumpendüse | |
DE4312393C2 (de) | Kipphebel für Einspritz- und Ölpumpe | |
EP0288669B1 (de) | Brennstoffeinspritzpumpe für Hubkolbenbrennkraftmaschinen der Dieselbauart |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19950922 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE ES FR GB IT |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
17Q | First examination report despatched |
Effective date: 19970804 |
|
GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE ES FR GB IT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19980610 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19980610 |
|
GBT | Gb: translation of ep patent filed (gb section 77(6)(a)/1977) |
Effective date: 19980611 |
|
ITF | It: translation for a ep patent filed |
Owner name: BARZANO'E ZANARDO S.P.A. |
|
REF | Corresponds to: |
Ref document number: 59406244 Country of ref document: DE Date of ref document: 19980716 |
|
EN | Fr: translation not filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20060331 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20080318 Year of fee payment: 15 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20080527 Year of fee payment: 15 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20070310 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20090310 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20091001 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20090310 |