SE463202B - BATH ENGINE DEVICE MOVE TO REVERSE MOTOR ROTATION - Google Patents
BATH ENGINE DEVICE MOVE TO REVERSE MOTOR ROTATIONInfo
- Publication number
- SE463202B SE463202B SE8800221A SE8800221A SE463202B SE 463202 B SE463202 B SE 463202B SE 8800221 A SE8800221 A SE 8800221A SE 8800221 A SE8800221 A SE 8800221A SE 463202 B SE463202 B SE 463202B
- Authority
- SE
- Sweden
- Prior art keywords
- engine
- rotation
- shaft
- bath
- motor rotation
- Prior art date
Links
- 230000005540 biological transmission Effects 0.000 claims 1
- 230000001419 dependent effect Effects 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000498 cooling water Substances 0.000 description 2
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000013535 sea water Substances 0.000 description 1
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
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
- B63H—MARINE PROPULSION OR STEERING
- B63H23/00—Transmitting power from propulsion power plant to propulsive elements
- B63H23/32—Other parts
-
- 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
- F02B61/04—Adaptations of engines for driving vehicles or for driving propellers; Combinations of engines with gearing for driving propellers
-
- 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
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D41/00—Freewheels or freewheel clutches
- F16D41/06—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface
- F16D41/069—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags
- F16D41/07—Freewheels or freewheel clutches with intermediate wedging coupling members between an inner and an outer surface the intermediate members wedging by pivoting or rocking, e.g. sprags between two cylindrical surfaces
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Ocean & Marine Engineering (AREA)
- Gear Transmission (AREA)
- Transmission Devices (AREA)
- Hydraulic Motors (AREA)
- Reciprocating Pumps (AREA)
Description
465 202 För att möjliggöra backning samt i viss mån inbromsning är drivaggregaten som regel försedda med ett backslag, vilket vanligtvis fungerar på så sätt, att det reverserar propellerns rotationsriktning. 465 202 To enable reversing and to some extent braking, the drive units are usually provided with a reversing stroke, which usually works in such a way that it reverses the direction of rotation of the propeller.
Om backslaget är av s.k. konkopplingstyp, t.ex. den typ, som beskrives i US-PS-3 269 497 är det möjligt att reversera propellerns rotations- riktning även under relativt hög fart framåt.If the reverse stroke is of so-called coupling type, e.g. of the type described in US-PS-3,269,497 it is possible to reverse the direction of rotation of the propeller even at a relatively high forward speed.
Om en sådan omkastning av propellerns rotationsriktning sker under hög fart, kan den av vattnet avgivna, på propellern verkande kraften vara så stor, att den övervinner den av motorn avgivna effek- ten. Detta resulterar i så fall i att motorns rotation reverseras i stället för att propellerns rotation reverseras. En dylik reversering av en motors rotation leder till att motorn arbetar som en kolvpump, som får sin insugsida på motorns avgassida. På grund av att motorns avgasledning under drift till stor del är fylld med kylvatten från motorns kylsystem, kommer den som en pump arbetande motorn att inte bara suga in avgaser, utan även en ansenlig mängd vatten. Den insugna vattenvolymen i ett pumpslag kan därvid överstiga motorns kompressions- volym, och eftersom det ej går att komprimera en vätska, leder detta till att kolven stoppas tvärt med allvarliga motorskador som följd.If such a reversal of the direction of rotation of the propeller takes place at high speed, the force emitted by the water, acting on the propeller, can be so great that it overcomes the effect emitted by the engine. In this case, the rotation of the engine is reversed instead of the rotation of the propeller. Such a reversal of an engine's rotation causes the engine to act as a piston pump, which gets its intake side on the exhaust side of the engine. Due to the fact that the engine's exhaust line during operation is largely filled with cooling water from the engine's cooling system, the engine operating as a pump will not only suck in exhaust gases, but also a considerable amount of water. The volume of water sucked into a pump stroke can then exceed the engine's compression volume, and since it is not possible to compress a liquid, this leads to the piston being stopped abruptly with serious engine damage as a result.
Exempel på sådana motorskador är krökta vevstakar och spräckta kolvar.Examples of such engine damage are curved connecting rods and cracked pistons.
Vid de fall avgasledningen mynnar under vattenytan, vilket vanligen är fallet, är en ventil anordnad i denna ledning för att för- hindra att vatten strömmar in i ledningen. Ofta föreligger dock ett visst läckage förbi ventilen, varför en reversering av motorns rotation dessutom riskerar att medföra insugning av sjövatten i motorn. Ändamålet med föreliggandefuppfinning är att åstadkomma en anordning, som på ett enkelt och billigt sätt'löser det ovan beskrivna problemet. _ Detta ändamål uppnås medelst en anordning, som utgöres av ett å eller flera kring den motorn med backslaget förbindande axeln anbragta kombinerade lager-frinav, som ersätter ett eller flera ordinarie lager på nämnda axel. _ 463 202 Genom att på detta sätt hindra den motorn med backslaget förbindande axeln från att rotera i en riktning motsatt motorns normala rotationsriktning tillförsäkras, att motorn aldrig kan komna att fungera som en pump på det sätt som beskrivits ovan, varvid risken för att motorns kylvatten via avgasledningen skall ströma in i cylindrarna är helt eliminerad.In cases where the exhaust line opens below the water surface, which is usually the case, a valve is arranged in this line to prevent water from flowing into the line. Often, however, there is a certain leakage past the valve, which is why a reversal of the engine's rotation also risks leading to the intake of seawater into the engine. The object of the present invention is to provide a device which solves the problem described above in a simple and inexpensive manner. This object is achieved by means of a device, which consists of one or more combined bearing-free ridges arranged around the motor connecting the shaft to the reverse stroke, which replace one or more ordinary bearings on said shaft. By preventing the motor with the reverse stroke shaft from rotating in a direction opposite to the normal direction of rotation of the motor in this way, it is ensured that the motor can never function as a pump in the manner described above, whereby the risk of the motor cooling water via the exhaust line to flow into the cylinders is completely eliminated.
I det följande skall beskrivas ett fördelaktigt utförings- exempel på uppfinningen med hänvisning till de bifogade ritningarna.In the following, an advantageous embodiment of the invention will be described with reference to the accompanying drawings.
Fig. 1 är en delvis snittad vy av en motorn med backslaget förbindande axel försedd med en anordning enligt uppfinningen och fig. 2 visar ett snitt längs linjen I-I i fig. 1.Fig. 1 is a partially sectioned view of a motor connected to the reverse gear shaft provided with a device according to the invention and Fig. 2 shows a section along the line I-I in Fig. 1.
Uppfinningen kan med fördel tillämpas på ett drivaggregat av den typ, som beskrives i US-PS-3 269 497. På ritningarna visas dock enbart en del av axeln mellan motorn och backslaget, varför US-PS 3 269 497 inkorporeras i föreliggande beskrivning, vad gäller utform- ningen av drivaggregatet i övrigt.The invention can be advantageously applied to a drive unit of the type described in US-PS-3 269 497. However, the drawings show only a part of the shaft between the engine and the reverse gear, so that US-PS 3 269 497 is incorporated in the present description, which applies to the design of the drive unit in general.
Kring den i fig. 1 visade, motorn med ett backslag förbindande axeln 1 har mellan två axeln stödande lager 2, 3 anordnats ett frinav 4 av känd typ. För att förtydliga frinavets 4 funktion visar emellertid fig. 2 ett snitt genom ett frinav 4 av en typ, som skulle kunna använ- das vid anordningen enligt uppfinningen. När axeln 1 roterar i pilens 5 riktning lägger sig i frinavet 4 ingående klotsar 6 på ett sådant sätt, att axeln 1 tillåtes rotera fritt. Skulle emellertid axeln påfö- ras ett moment, som strävar att driva den i den pilen 5 motsatta rikt- ningen, vrider sig klotsarna 6 i pilarnas 7 riktning och låser därige- nom fast axeln 1. Det är även möjligt att ersätta ett av eller båda lagren 2, 3 med kombinerade kullager-frinav.Around the motor 1 shown in Fig. 1 connecting the shaft 1 with a reverse stroke, a free-edge 4 of known type has been arranged between two shaft-supporting bearings 2, 3. However, in order to clarify the function of the freewheel 4, Fig. 2 shows a section through a freewheel 4 of a type which could be used in the device according to the invention. When the shaft 1 rotates in the direction of the arrow 5, blocks 6 included in the free hub 4 settle in such a way that the shaft 1 is allowed to rotate freely. However, should a shaft be applied to a torque which tends to drive in the direction opposite to the arrow 5, the blocks 6 turn in the direction of the arrows 7 and thereby lock the shaft 1. It is also possible to replace one or both bearings 2, 3 with combined ball bearings-free.
Slutligen bör även framhållas att uppfinningen ej är begränsad till det ovan beskrivna utföringsexemplet utan att flera olika utföran- den är möjliga inom ramen för de efterföljande kraven.Finally, it should also be emphasized that the invention is not limited to the embodiment described above, but that several different embodiments are possible within the scope of the following claims.
Claims (1)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8800221A SE463202B (en) | 1988-01-25 | 1988-01-25 | BATH ENGINE DEVICE MOVE TO REVERSE MOTOR ROTATION |
PCT/SE1989/000018 WO1989006622A1 (en) | 1988-01-25 | 1989-01-24 | A device in boat motors for prevention of reversal of the rotary movements of the motor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SE8800221A SE463202B (en) | 1988-01-25 | 1988-01-25 | BATH ENGINE DEVICE MOVE TO REVERSE MOTOR ROTATION |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8800221D0 SE8800221D0 (en) | 1988-01-25 |
SE8800221L SE8800221L (en) | 1989-07-26 |
SE463202B true SE463202B (en) | 1990-10-22 |
Family
ID=20371158
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8800221A SE463202B (en) | 1988-01-25 | 1988-01-25 | BATH ENGINE DEVICE MOVE TO REVERSE MOTOR ROTATION |
Country Status (2)
Country | Link |
---|---|
SE (1) | SE463202B (en) |
WO (1) | WO1989006622A1 (en) |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3232138A (en) * | 1963-04-30 | 1966-02-01 | Daimler Benz Ag | Drive connection |
DE1198233B (en) * | 1963-06-29 | 1965-08-05 | Wagner Hochdruck Dampfturbinen | Ship propulsion system with several propulsion engines |
US3269497A (en) * | 1963-10-14 | 1966-08-30 | Volvo Penta Ab | Clutch mechanism |
DE2758841C2 (en) * | 1977-12-30 | 1986-09-04 | Stieber Division Der Borg-Warner Gmbh, 6900 Heidelberg | Sprag overrunning clutch |
JPS56141454A (en) * | 1980-04-02 | 1981-11-05 | Honda Motor Co Ltd | Power transmission device for car |
-
1988
- 1988-01-25 SE SE8800221A patent/SE463202B/en not_active IP Right Cessation
-
1989
- 1989-01-24 WO PCT/SE1989/000018 patent/WO1989006622A1/en unknown
Also Published As
Publication number | Publication date |
---|---|
WO1989006622A1 (en) | 1989-07-27 |
SE8800221L (en) | 1989-07-26 |
SE8800221D0 (en) | 1988-01-25 |
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Legal Events
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NUG | Patent has lapsed |
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