EP0767300B1 - Zweitakt V-Motor - Google Patents
Zweitakt V-Motor Download PDFInfo
- Publication number
- EP0767300B1 EP0767300B1 EP19960810631 EP96810631A EP0767300B1 EP 0767300 B1 EP0767300 B1 EP 0767300B1 EP 19960810631 EP19960810631 EP 19960810631 EP 96810631 A EP96810631 A EP 96810631A EP 0767300 B1 EP0767300 B1 EP 0767300B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- engine
- crankshaft
- pistons
- stroke
- cylinders
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B25/00—Engines characterised by using fresh charge for scavenging cylinders
- F02B25/14—Engines characterised by using fresh charge for scavenging cylinders using reverse-flow scavenging, e.g. with both outlet and inlet ports arranged near bottom of piston stroke
-
- 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
- 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
-
- 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
- F02B61/00—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing
- F02B61/02—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving cycles
-
- 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
Definitions
- the present invention relates to a two-stroke V-engine with at least one consisting of two cylinders Unit, with two pistons, each arranged on a one-piece connecting rod are that act on a common crankshaft.
- the present application relates in particular to an engine for racing motorcycles, where it v. a. on good acceleration and top speed arrives.
- Such racing engines have become two-stroke engines in particular enforced in a V-arrangement, because in this case the Carburetor right in front of the engine and exhaust right behind the engine can be arranged, and in particular a Narrow construction is achieved, which among other things Turning brings advantages.
- Cylinders are known from DE-C-672 964, in which it is mentioned that two cylinders each from a single one Crank chamber are flushed out, however, the two cylinders connected with a pin and staggered. The difficulties arising from this arrangement for the crank chamber by means of an additional, double-acting compensating piston released. In addition, the Crankshaft supported with a bearing in the middle.
- each cylinder pair has a common crank chamber and the crankshaft is not supported in the middle, however the cylinders are offset by 180 ° to each other, i.e. it is a boxer engine. Also are the connecting rods are made up of several parts and are therefore heavier as one piece.
- the two-stroke V-engine dates from 1922, or 1939 moved in another direction.
- a two-cylinder unit consists of two of each other separate single cylinders, each with a crankcase space have, the pistons in this way on the common Crankshafts are arranged that one in time staggered movement arises from this in particular Figure 1 emerges.
- FIGs 1 and 2 show schematically a two-stroke V-engine 1 according to the prior art with the two pistons 2 and 3, which are attached to a connecting rod 4 and 5, one of the two inlets 6 and the two outlets 7 and 8.
- This engine is a crankcase-flushed engine, the Fuel-air mixture in the crankcase is compressed and then gets into the cylinders 9 or 10.
- crankshaft 11 can also be seen in FIG as well as the crank arm pairs 12 and 13 and the power output 14. It can also be seen from FIG. 2 that the two crankcase spaces 16 and 17 separated and on the Crankshaft are sealed via shaft seals 15. At In this construction, there are three main crankshaft bearings 24 necessary.
- the usual piston rings 18 can also be seen as well as the spark plugs 19.
- FIG two cylinder housings 20 and 21 and the crankcase housing 22 and a crank pin 23 can be seen.
- FIGs 3 and 4 is an embodiment of a Racing engine according to the invention with a two-cylinder unit shown.
- the piston 34 is located in the cylinder housing and 35, which run in the cylinders 36 and 37 and on the, as seen in Figure 3, one-piece connecting rods 38 and 39 are arranged.
- the two connecting rods are with the common crankshaft 48 via the known Elements such as crank pin 49 and bends connected.
- the two are Pistons arranged on the crankshaft so that they run in the same direction, d. that is, both pistons are working simultaneously are in the top dead center position, as in Figure 3 shown, or simultaneously in the bottom dead center position.
- Such a piston arrangement gives one maximum pre-compression, but can in this engine arrangement also offset pistons can be used.
- the pistons with the piston rings 46 can in themselves worked the same as the known pistons.
- the spark plugs 47 are also indicated.
- the present exemplary embodiment is a two-cylinder two-stroke V-engine, but can do that above principle disclosed, of course, with adjustments, for an engine with more than one two-cylinder unit be taken over, especially for a four-cylinder engine.
Description
- Die Figuren 1 und 2
- zeigen in zwei Schnitten schematisch einen vorbekannten Zweizylinder Zweitakt V-Motor, und
- die Figuren 3 und 4
- zeigen zwei schematische Schnitte eines erfindungsgemässen Motors.
Claims (3)
- Zweitakt V-Motor mit mindestens einer aus zwei Zylindern bestehenden Einheit, die zwei Kolben, die an je einer einteiligen Pleuelstange angeordnet sind aufweist und auf eine gemeinsame Kurbelwelle wirken, dadurch gekennzeichnet, dass die beiden Zylinder (36, 37) einen gemeinsamen, gespülten Kurbelgehäuseraum (40) besitzen und die Kurbelwelle (48) im Kurbelgehäuseraum (40) lediglich mit zwei Wellendichtungen (45) nach aussen abgedichtet ist und lediglich zwei Kurbelwellen-Hauptlager (50) sowie drei Kurbelwangen (44) aufweist.
- Motor-Einheit nach Anspruch 1, dadurch gekennzeichnet, dass die Kolben (34, 35) derart an der Kurbelwelle (48) angeordnet sind, dass sie einen im wesentlichen gleichsinnigen Bewegungsablauf aufweisen.
- Motor-Einheit nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass sie einen Einlass (41) und zwei Auslässe (42, 43) aufweist.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CH278395 | 1995-10-03 | ||
CH2783/95 | 1995-10-03 | ||
CH278395 | 1995-10-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0767300A1 EP0767300A1 (de) | 1997-04-09 |
EP0767300B1 true EP0767300B1 (de) | 2000-03-22 |
Family
ID=4241501
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19960810631 Expired - Lifetime EP0767300B1 (de) | 1995-10-03 | 1996-09-25 | Zweitakt V-Motor |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0767300B1 (de) |
DE (1) | DE59604747D1 (de) |
ES (1) | ES2144719T3 (de) |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB185181A (en) * | 1921-05-25 | 1922-08-25 | Pedro Sorriguieta E Ibarra | A two cycle internal combustion engine having one or more pairs of opposed cylinders |
DE672964C (de) * | 1936-03-10 | 1939-03-13 | Else Gockerell | Mehrzylinderzweitaktbrennkraftmaschine mit V-foermig angeordneten Zylindern |
JP2730997B2 (ja) * | 1989-10-31 | 1998-03-25 | ヤマハ発動機株式会社 | V型2サイクルエンジンを搭載した自動二輪車 |
-
1996
- 1996-09-25 DE DE59604747T patent/DE59604747D1/de not_active Expired - Fee Related
- 1996-09-25 EP EP19960810631 patent/EP0767300B1/de not_active Expired - Lifetime
- 1996-09-25 ES ES96810631T patent/ES2144719T3/es not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE59604747D1 (de) | 2000-04-27 |
EP0767300A1 (de) | 1997-04-09 |
ES2144719T3 (es) | 2000-06-16 |
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