WO2015149094A1 - Zweitakt-verbrennungsmotor - Google Patents
Zweitakt-verbrennungsmotor Download PDFInfo
- Publication number
- WO2015149094A1 WO2015149094A1 PCT/AT2015/050056 AT2015050056W WO2015149094A1 WO 2015149094 A1 WO2015149094 A1 WO 2015149094A1 AT 2015050056 W AT2015050056 W AT 2015050056W WO 2015149094 A1 WO2015149094 A1 WO 2015149094A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylinders
- balancing
- crankshafts
- internal combustion
- combustion engine
- Prior art date
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
- F02B75/00—Other engines
- F02B75/06—Engines with means for equalising torque
- F02B75/065—Engines with means for equalising torque with double connecting rods or crankshafts
-
- 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
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
- F02B75/225—Multi-cylinder engines with cylinders in V, fan, or star arrangement having two or more crankshafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01B—MACHINES OR ENGINES, IN GENERAL OR OF POSITIVE-DISPLACEMENT TYPE, e.g. STEAM ENGINES
- F01B1/00—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements
- F01B1/10—Reciprocating-piston machines or engines characterised by number or relative disposition of cylinders or by being built-up from separate cylinder-crankcase elements with more than one main shaft, e.g. coupled to common output shaft
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N1/00—Silencing apparatus characterised by method of silencing
- F01N1/02—Silencing apparatus characterised by method of silencing by using resonance
-
- 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
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/26—Multi-cylinder engines other than those provided for in, or of interest apart from, groups F02B25/02 - F02B25/24
- F02B25/28—Multi-cylinder engines other than those provided for in, or of interest apart from, groups F02B25/02 - F02B25/24 with V-, fan-, or star-arrangement of cylinders
-
- 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
- F02B27/00—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues
- F02B27/04—Use of kinetic or wave energy of charge in induction systems, or of combustion residues in exhaust systems, for improving quantity of charge or for increasing removal of combustion residues in exhaust systems only, e.g. for sucking-off combustion gases
-
- 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
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/22—Compensation of inertia forces
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/22—Compensation of inertia forces
- F16F15/24—Compensation of inertia forces of crankshaft systems by particular disposition of cranks, pistons, or the like
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/22—Compensation of inertia forces
- F16F15/26—Compensation of inertia forces of crankshaft systems using solid masses, other than the ordinary pistons, moving with the system, i.e. masses connected through a kinematic mechanism or gear system
- F16F15/264—Rotating balancer shafts
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F15/00—Suppression of vibrations in systems; Means or arrangements for avoiding or reducing out-of-balance forces, e.g. due to motion
- F16F15/28—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same
- F16F15/283—Counterweights, i.e. additional weights counterbalancing inertia forces induced by the reciprocating movement of masses in the system, e.g. of pistons attached to an engine crankshaft; Attaching or mounting same for engine crankshafts
-
- 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 invention relates to a two-stroke internal combustion engine with two cylinders connected to a common resonance exhaust, whose pistons engage at 180 ° to each other angularly offset crank pin.
- Two-stroke internal combustion engines with two cylinders in a row arrangement are used, for example, for driving snow sledge.
- the pistons of the two juxtaposed cylinders engage in a 180 ° offset angle to a common crankshaft. Due to this crank angle offset, the first order inertial forces can be completely compensated. Due to the arrangement of the two cylinders, however, free mass moments of the first order occur, giving rise to vehicle vibrations.
- JP S60220240 A, JP H02196124 A In order to improve the vibration behavior of internal combustion engines with a V-arrangement of the cylinder, it is also known (JP S60220240 A, JP H02196124 A) to allow the pistons of the oppositely arranged cylinder attack on separate crankshafts and assign these crankshafts a parallel balancer shaft, which is drivable by the crankshafts via a sub-reduction gear in the opposite direction to the crankshaft.
- the invention is therefore based on the object to improve a two-stroke combustion engine with two cylinders so that with comparatively simple design means a compensation of the mass moments of first order is possible.
- the charge conditions should be improved.
- the invention solves this problem by the fact that the two cylinders arranged in a common plane, with each other a right angle enclosing axes, that the pistons of the two cylinders engage crankpins of two separate crankshafts, which a parallel balancing shaft is associated, which runs through the intersection of the cylinder axes and at the same speed as the crankshafts, but in the opposite direction driven, and that the balancer shaft cooperating with the balancing weights of the crankshaft balancing mass for balancing the mass forces and moments of the first order includes.
- each other in a common axial plane at 90 ° angularly offset cylinder entails that the exhaust ducts are opposite to each other and therefore can be connected to each other to a common exhaust system on a short path. This is especially true when the axes of the exhaust ducts lie in the common axial plane of the two cylinders. As a result of this measure, the harmful volume of exhaust gas caused by the respectively unused exhaust gas path is reduced, thus achieving an improved charge exchange with the aid of the common resonance exhaust.
- the balancing shaft is drive-connected to the crankshafts via a toothed wheel which meshes with gears of equal size of the two crankshafts, then the counterbalance drive of the balancing shaft can be ensured in a simple manner, which is absolutely necessary for the desired complete balancing of the first order.
- the pistons 3 of the two cylinders 1 engage with their connecting rods 4 via crank pin 5 on separate crankshafts 6, which are arranged angularly offset by 180 °. This means that in the top dead center position of one piston 3, the other piston 3 is in the lower dead center position, as shown in the drawing.
- the engine block 7 Due to the separate crankshafts 6, the engine block 7 also forms two crankcases with corresponding intake ports 8.
- the exhaust ports 9 of the two cylinders 1 are opposite each other, wherein the subsequent exhaust paths 10 are combined to form a common exhaust line 1 1 of a resonance exhaust, not shown.
- a catalyst 12 is provided within the common exhaust line 1 1, which is provided. Since the axes of the exhaust ducts 9 extend in the common axial plane of the two cylinders 1, the exhaust paths 10 can be kept comparatively short, which has an advantageous effect on the charge exchange of the two cylinders 1, which takes place alternately, so that the respective unused exhaust path 10 a Due to the comparatively short length of the exhaust paths 10 with the effect of a comparison with a two-cylinder in-line engine improved purging behavior can be kept small.
- the crankshafts 6 are assigned a parallel balancing shaft 13, which runs through the intersection of the two cylinder axles 2 and is driven at the same speed as the crankshafts 6, but in opposite directions.
- the balance shaft 13 outside of the engine block 7 with a gear 14 which meshes with the same size gears 15 of the crankshafts 6.
- the balancing mass 16 associated with the balancing shaft 13 interacts with the balancing masses 17 of the crankshafts 6 in the sense of perfect balance of mass. This is made possible by the fact that the cylinder axes 2 lie in a common axial plane, whereby free mass moments can be avoided.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Aviation & Aerospace Engineering (AREA)
- Exhaust Gas After Treatment (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112015001645.7T DE112015001645A5 (de) | 2014-04-02 | 2015-03-03 | Zweitakt-Verbrennungsmotor |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA50246/2014A AT515108B1 (de) | 2014-04-02 | 2014-04-02 | Zweitakt-Verbrennungsmotor |
ATA50246/2014 | 2014-04-02 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015149094A1 true WO2015149094A1 (de) | 2015-10-08 |
Family
ID=52823959
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT2015/050056 WO2015149094A1 (de) | 2014-04-02 | 2015-03-03 | Zweitakt-verbrennungsmotor |
Country Status (3)
Country | Link |
---|---|
AT (1) | AT515108B1 (de) |
DE (1) | DE112015001645A5 (de) |
WO (1) | WO2015149094A1 (de) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5642744A (en) * | 1979-09-14 | 1981-04-21 | Yamaha Motor Co Ltd | Low vibration engine |
JPS60220240A (ja) | 1984-04-12 | 1985-11-02 | Yamaha Motor Co Ltd | 車両のv型エンジン |
DE3445430A1 (de) * | 1984-12-13 | 1986-06-19 | Albrecht 6638 Dillingen Nikes | Hubkolbenmaschine, insbesondere brennkraftmaschine |
JPH02196124A (ja) | 1989-01-25 | 1990-08-02 | Suzuki Motor Co Ltd | 二サイクルエンジンの吸気装置 |
US20040159301A1 (en) * | 2003-02-14 | 2004-08-19 | Mtu Friedrichshafen Gmbh | Internal-combustion engine having balancing shafts |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
IT1226082B (it) * | 1988-07-06 | 1990-12-10 | Scriba S P A | Procedimento ed impianto per realizzare prodotti in cialda variamente sagomati, in particolare coni e simili per gelati e alimenti. |
JP2927832B2 (ja) * | 1989-09-13 | 1999-07-28 | 日産自動車株式会社 | 横置v形エンジンの排気系支持装置 |
-
2014
- 2014-04-02 AT ATA50246/2014A patent/AT515108B1/de active
-
2015
- 2015-03-03 DE DE112015001645.7T patent/DE112015001645A5/de not_active Withdrawn
- 2015-03-03 WO PCT/AT2015/050056 patent/WO2015149094A1/de active Application Filing
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5642744A (en) * | 1979-09-14 | 1981-04-21 | Yamaha Motor Co Ltd | Low vibration engine |
JPS60220240A (ja) | 1984-04-12 | 1985-11-02 | Yamaha Motor Co Ltd | 車両のv型エンジン |
DE3445430A1 (de) * | 1984-12-13 | 1986-06-19 | Albrecht 6638 Dillingen Nikes | Hubkolbenmaschine, insbesondere brennkraftmaschine |
JPH02196124A (ja) | 1989-01-25 | 1990-08-02 | Suzuki Motor Co Ltd | 二サイクルエンジンの吸気装置 |
US20040159301A1 (en) * | 2003-02-14 | 2004-08-19 | Mtu Friedrichshafen Gmbh | Internal-combustion engine having balancing shafts |
Also Published As
Publication number | Publication date |
---|---|
DE112015001645A5 (de) | 2017-04-20 |
AT515108B1 (de) | 2015-06-15 |
AT515108A4 (de) | 2015-06-15 |
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