EP0953098A1 - Internal combustion engine - Google Patents
Internal combustion engineInfo
- Publication number
- EP0953098A1 EP0953098A1 EP97947647A EP97947647A EP0953098A1 EP 0953098 A1 EP0953098 A1 EP 0953098A1 EP 97947647 A EP97947647 A EP 97947647A EP 97947647 A EP97947647 A EP 97947647A EP 0953098 A1 EP0953098 A1 EP 0953098A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cylinder
- piston
- internal combustion
- combustion engine
- crankcase
- 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
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
- F01C9/00—Oscillating-piston machines or engines
- F01C9/002—Oscillating-piston machines or engines the piston oscillating around a fixed axis
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T74/00—Machine element or mechanism
- Y10T74/18—Mechanical movements
- Y10T74/18056—Rotary to or from reciprocating or oscillating
- Y10T74/18248—Crank and slide
- Y10T74/18256—Slidable connections [e.g., scotch yoke]
Definitions
- the invention relates to an internal combustion engine with at least one cylinder and a crankcase, which together with the cylinder forms a common, circular cylindrical tubular body, and with an oscillating piston which is rotatably mounted about the cylinder axis and separates a cylinder space from the crankcase which is delimited by radial walls and which has a is connected to the crankshaft parallel to the cylinder axis via a link guide provided on the crankcase side of the oscillating piston for at least one crankpin of the crankshaft.
- crankcase is formed in a simple manner by a circular cylindrical tube body, which is enclosed in a cooling jacket.
- the oscillating piston essentially has the shape of a hollow half-cylinder, whose outer diameter is adapted to the inner diameter of the tubular body and is stiffened by the radial sliding guide for the sliding block. This construction not only makes crankcase flushing impossible, but is also prone to wear due to the sliding block guide.
- there is an uneven thermal load on the tubular body which is subject to different thermal expansions due to the cooling-related, uneven heat distribution over the circumference, so that difficulties arise with regard to the piston seal, which in turn limits the possible compression of the fuel-air mixture.
- the invention is therefore based on the object of designing an internal combustion engine of the type described at the outset with simple constructive means such that advantageous power transmission conditions between the oscillating piston and the crankshaft and, on the other hand, favorable sealing conditions for the cylinder space can be ensured.
- crank pin is supported by a roller on the link guide and that the tubular body forming the cylinder and the crankcase is thermally insulated from the outside.
- the link guide can consist of an elongated hole receiving the role of the crank pin.
- the two piston halves which extend diametrically from the common axis of rotation, execute torsional vibrations offset by 180 ° with respect to a crankshaft. This fact can be used to alternately use the two piston halves for power transmission.
- two parallel crankshafts each assigned to a piston half and connected to one another by drive, can be provided, which cooperate with a link guide on the associated piston half.
- the slide guides which represent only a straight track for the associated rollers on the crank pin, each act on the associated crankshafts during the working stroke, but not during the return stroke of the piston halves, which creates simple constructional relationships.
- the drive connection of the two alternately driven crankshafts results in a continuous crankshaft drive.
- elastic pre-tensioning of this drive connection between the two crankshafts for example via a toothed belt drive, a backlash-free sliding guide for the rollers of the crankshafts can be achieved.
- the roles assigned to the two link guides can also belong to a common crankshaft.
- a fuel injection pump which can itself be driven by the oscillating piston via a plunger projecting into the cylinder space can be provided.
- the Tappet actuation by the oscillating piston affects the fuel injection pump in the stroke frequency of the oscillating piston, whereby diaphragm pumps can advantageously be used because of the simple sealing.
- the plunger for actuating the fuel injection pump has at its end projecting into the cylinder chamber a piston which interacts with a pocket-like recess in the oscillating piston, the plunger actuation takes place at least at higher stroke frequencies via a gas cushion which forms in the pocket-hole-like recess when the piston penetrates.
- the cylinder space in the area of the radial walls can have a heat storage grid, which can be heated if necessary, which absorbs part of the exhaust gas waste heat and releases it again to the fresh gas charge.
- the heat storage grid can also be heated.
- FIG. 1 shows an internal combustion engine according to the invention in a schematic cross section
- Fig. 2 shows this internal combustion engine in a section along the line II-II of Fig. 1 with the crankshaft pivoted into the plane of the drawing and
- FIG. 3 shows an embodiment of an internal combustion engine according to the invention modified in comparison with the internal combustion engine according to FIGS. 1 and 2, partly in a cross section corresponding to FIG. 1.
- the internal combustion engine according to the exemplary embodiment according to FIGS. 1 and 2 has a circular cylindrical tubular body 1 with end walls 2 as a housing, which on the one hand forms cylinder spaces 4 delimited by radial walls 3 and on the other hand forms a crankcase 5.
- This crankcase 5 is divided by a radial partition 6 into two chambers, each of which is delimited from the associated cylinder chambers 4 by half of an oscillating piston 7 designed as a double piston.
- the chambers of the crankcase 5 are with the associated cylinder spaces 4 connected by overflow channels 8 in a conventional manner, so that, for example, fresh air sucked into the respective chamber of the crankcase 5 can enter the cylinder chamber 4 according to the flow arrow 9 by a conventional suction valve, not shown, in order to move the oscillating piston 7 around it in the subsequent rotary movement Axis of the tubular body 1 coaxial axis of rotation 10 to be compressed.
- the oscillating piston 7 acts on a tappet 11 of a fuel injection pump 12, which is designed as a spring-loaded diaphragm pump and injects the fuel previously sucked in from the fuel feed line 13 provided with a check valve via an injection nozzle 14 into the cylinder chamber 4.
- the ignition of the injected fuel requires a working stroke due to a corresponding piston action, the oscillating piston 7 opening an outlet channel 15 before the reversing position of the working stroke, through which the exhaust gases flow from the cylinder chamber 4, which is then supplied with fresh air again via the overflow channel 8 . Since the oscillating piston 7 is designed as a double piston, one piston half carries out a working stroke during the compression stroke of the other piston half and then carries out a compression stroke during the working stroke of the other piston half.
- the oscillating piston 7 In order to be able to transmit the reciprocating rotary movement of the oscillating piston 7 to a crankshaft 16 which, like the oscillating piston 7, is mounted in the end walls 2 of the housing, the oscillating piston 7 has a slotted guide 17 in the form of an elongated hole on the crankcase side, which in the is aligned substantially radially to the axis of rotation 10 of the oscillating piston 7. This elongated hole in the link guide 17 receives a roller 19 mounted on a crank pin 18 of the crankshaft 16.
- the reciprocating rotary motion of the oscillating piston 7 is consequently converted into a co-rotating motion of the crankshaft 16 via the slide guide 17, which results in a drive connection which is free of vibrations and low in vibration due to the rolling of the roller 19 along the slide guide 17, which, on the one hand, advantageously affects the load conditions affects and on the other hand is a prerequisite for a narrow sealing gap between the oscillating piston 7 and in particular the tubular body 1.
- Another requirement for such a narrow sealing gap, not shown in the drawing, which makes separate seals unnecessary can be seen in an even thermal load on the entire housing. This requirement can only be met in that the tubular body 1 with the end walls 2 has thermal insulation 20 on the outside, so that the same thermal expansion ratios occur over the entire housing.
- the plunger 11 protruding into the cylinder space 4 for actuating the fuel injection pump 12 is provided with a piston 21, which interacts with a pocket-like recess 22 in the oscillating piston 7, so that the plunger 11 at least at higher stroke frequencies a gas cushion is applied, which forms when the piston 21 engages in the recess 22.
- a heat storage grid 23 can be provided in the area of the radial cylinder walls 3, which is heated via the hot exhaust gases and releases part of the heat back into the fresh air, which is transferred due to the overall heat insulation the uncooled crankcase is preheated.
- the embodiment according to FIG. 3 differs from that according to FIGS. 1 and 2 only in the type of drive connection between the oscillating piston 7 and the crankshaft 16.
- the internal combustion engine has the same features 3
- two parallel crankshafts 16 are provided for each half of the oscillating piston designed as a double piston, the two crankshafts 16 each interacting with a crank guide 17 associated with the piston halves via a roller 19 on the crank pin 18.
- the arrangement is such that the coulisse guides 17, which are only designed as a straight raceway for the rollers 19, can only exert pressure forces on the crank pin 18 during the working stroke, so that the two crankshafts 16 must be drive-connected to one another in order to ensure a continuous crankshaft drive.
- the power injection pump could be connected to an external drive, which opens up the advantageous possibility of providing the power injection pump on the circumference of the tubular body covered by the vibrating piston, in order to avoid thermal overloading of the fuel injection pump by covering the fuel injection pump by the vibrating piston 7 after the fuel injection .
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT215696 | 1996-12-11 | ||
AT0215696A AT408126B (en) | 1996-12-11 | 1996-12-11 | INTERNAL COMBUSTION ENGINE |
PCT/AT1997/000272 WO1998026157A1 (en) | 1996-12-11 | 1997-12-10 | Internal combustion engine |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0953098A1 true EP0953098A1 (en) | 1999-11-03 |
EP0953098B1 EP0953098B1 (en) | 2002-04-17 |
Family
ID=3528964
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP97947647A Expired - Lifetime EP0953098B1 (en) | 1996-12-11 | 1997-12-10 | Internal combustion engine |
Country Status (7)
Country | Link |
---|---|
US (1) | US6227152B1 (en) |
EP (1) | EP0953098B1 (en) |
AT (1) | AT408126B (en) |
DE (1) | DE59707080D1 (en) |
ES (1) | ES2175481T3 (en) |
RU (1) | RU2188330C2 (en) |
WO (1) | WO1998026157A1 (en) |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2486343C2 (en) * | 2009-07-31 | 2013-06-27 | Валерий Моисеевич Арутюнов | Machine with pendulum lever (versions) |
RU2486357C2 (en) * | 2009-12-22 | 2013-06-27 | Валерий Моисеевич Арутюнов | Supercharged machine |
RU2485336C2 (en) * | 2010-02-17 | 2013-06-20 | Валерий Моисеевич Арутюнов | Supercharged double-rotor machine |
AT510278B1 (en) * | 2011-05-13 | 2012-03-15 | Freller Walter | ROCKING PISTON ENGINE |
RU2528241C2 (en) * | 2011-06-24 | 2014-09-10 | Юрий Сергеевич Ткаченко | Ice with swinging rotor-piston |
AT511615B1 (en) * | 2011-08-30 | 2013-01-15 | Freller Walter | ENGINE |
Family Cites Families (16)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE54778C (en) * | W. E. CRIST in Brooklyn, New-York, V. St. A., und H. C. COVERT in Chicago, V. St. A | Gas engine with a swinging piston | ||
US837507A (en) * | 1905-03-29 | 1906-12-04 | Alvin S Clark | Internal-combustion engine. |
US988704A (en) * | 1910-03-16 | 1911-04-04 | John H Sloan | Explosive-engine. |
FR447632A (en) * | 1911-10-31 | 1913-01-10 | Leon Pernot | Cylindrical motor with balanced sectors on a fixed axis |
FR481162A (en) * | 1915-03-25 | 1916-11-08 | Nicola Pavia | Kinematic device replacing the piston |
GB577656A (en) * | 1943-04-20 | 1946-05-27 | Alfred James Johnsen | Improvements in and relating to semi-rotary internal-combustion engines |
US3388693A (en) * | 1967-03-15 | 1968-06-18 | James Richard | Two-cycle engine with charge pump therein |
US3408991A (en) * | 1967-07-12 | 1968-11-05 | William B Pritchett Jr | Oscillating machine |
US3834242A (en) * | 1972-12-04 | 1974-09-10 | F Seybold | Flywheel converting oscillating into uniformly rotating motion |
DE2639530A1 (en) * | 1976-09-02 | 1978-03-16 | Loehr | Two-stroke oscillating piston IC engine - has pistons rotating about common axis forming working chambers with valves |
DE2803853A1 (en) | 1978-01-30 | 1979-08-02 | Wabco Westinghouse Gmbh | PISTON MACHINE |
CN85100486B (en) * | 1985-04-01 | 1988-10-26 | 谈诚 | The two-stroke strokes oscillating piston internal combustion engine |
CA1292124C (en) * | 1985-10-19 | 1991-11-19 | Hideo Kawamura | Energy recovery apparatus for turbo compound engine |
JPH02112620A (en) * | 1988-10-20 | 1990-04-25 | Isuzu Ceramics Kenkyusho:Kk | Heat insulating engine |
JPH0571434A (en) * | 1991-09-12 | 1993-03-23 | Nissan Motor Co Ltd | Injection fuel heating device for internal combustion engine |
DE19638323A1 (en) * | 1996-09-19 | 1998-04-02 | Daimler Benz Ag | Method for operating an internal combustion engine and internal combustion engine |
-
1996
- 1996-12-11 AT AT0215696A patent/AT408126B/en not_active IP Right Cessation
-
1997
- 1997-12-10 ES ES97947647T patent/ES2175481T3/en not_active Expired - Lifetime
- 1997-12-10 WO PCT/AT1997/000272 patent/WO1998026157A1/en active IP Right Grant
- 1997-12-10 US US09/319,551 patent/US6227152B1/en not_active Expired - Lifetime
- 1997-12-10 RU RU99115776/06A patent/RU2188330C2/en not_active IP Right Cessation
- 1997-12-10 EP EP97947647A patent/EP0953098B1/en not_active Expired - Lifetime
- 1997-12-10 DE DE59707080T patent/DE59707080D1/en not_active Expired - Lifetime
Non-Patent Citations (1)
Title |
---|
See references of WO9826157A1 * |
Also Published As
Publication number | Publication date |
---|---|
ES2175481T3 (en) | 2002-11-16 |
EP0953098B1 (en) | 2002-04-17 |
WO1998026157A1 (en) | 1998-06-18 |
RU2188330C2 (en) | 2002-08-27 |
ATA215696A (en) | 2001-01-15 |
US6227152B1 (en) | 2001-05-08 |
AT408126B (en) | 2001-09-25 |
DE59707080D1 (en) | 2002-05-23 |
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