DE222793C - - Google Patents
Info
- Publication number
- DE222793C DE222793C DE1908222793D DE222793DA DE222793C DE 222793 C DE222793 C DE 222793C DE 1908222793 D DE1908222793 D DE 1908222793D DE 222793D A DE222793D A DE 222793DA DE 222793 C DE222793 C DE 222793C
- Authority
- DE
- Germany
- Prior art keywords
- exhaust
- cams
- camshaft
- continuously
- lobe
- 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
- 239000002360 explosive Substances 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000001105 regulatory Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000000875 corresponding Effects 0.000 description 1
- 230000001419 dependent Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2760/00—Control of valve gear to facilitate reversing, starting, braking of four stroke engines
- F01L2760/003—Control of valve gear to facilitate reversing, starting, braking of four stroke engines for switching to compressor action in order to brake
- F01L2760/004—Control of valve gear to facilitate reversing, starting, braking of four stroke engines for switching to compressor action in order to brake whereby braking is exclusively produced by compression in the cylinders
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
Description
KAISERLICHES A IMPERIAL A
PATENTAMTPATENT OFFICE
in WIEN.in Vienna.
Es sind Bremsverfahren für Kraftwagen mitThere are braking methods for motor vehicles with
Viertakt - Explosionskraftmaschinen bekannt geworden, bei denen die Bremswirkung durch ein schwächeres oder stärkeres Drosseln des Auspuffes geregelt wird.Four-stroke explosion engines have become known in which the braking effect is achieved a weaker or stronger throttling of the exhaust is regulated.
Diese bekannten Regelungsarten, die durch ein in die Auspuffleitung eingeschaltetes Drosselorgan vollführt werden, zeigen den Nachteil, daß der einer bestimmten Einstellung desThese known types of regulation, which are activated by a throttle element in the exhaust line are carried out have the disadvantage that a certain setting of the
to Drosselorgan entsprechende Bremswiderstand erst nach Verlauf mehrerer Arbeitsperioden eintritt.Brake resistor corresponding to the throttle body only after several working periods have elapsed entry.
Die vorliegende Erfindung beseitigt diesen Ubelstand dadurch, daß kein eigenes Regelungsorgan, sondern das Auspuffventil des Zylinders selbst als Drosselorgan für den Auspuff benutzt und dadurch das Vorhandensein eines den unbestimmten Zeitpunkt des Eintrittes der Bremswirkung zur Folge habenden schädlichen Raumes vermieden wird. Der Erfindung gemäß erfolgt die Drosselung des Auspuffes in der Weise, daß die Auspuff ventile der Zylinder andauernd ganz geschlossen oder andauernd um das gleiche Maß mehr oderThe present invention eliminates this disadvantage in that no separate regulating body, but the exhaust valve of the cylinder itself is used as a throttle device for the exhaust and thus its presence one resulting in the indefinite point in time at which the braking effect occurs harmful space is avoided. According to the invention, the throttling takes place Exhaust in such a way that the exhaust valves of the cylinders are continuously closed or continuously by the same amount or more
weniger offen gehalten werden. ;be kept less open. ;
Das Maß der Offenhaltung oder die andauernde Schließung der Auspuffventile wird durch den Grad der Verschiebung der Nockenwelle in achsialer Richtung geregelt, so daß die relative Lage der Nockenwelle in bezug auf die Kurbelwelle nie geändert wird. Hierbei sind naturgemäß neben den normalen j Auspuff nocken auf der Welle eigene, kegelstumpfförmige Bremsnocken vorgesehen, in welche die Auspuffnocken allmählich übergehen. The degree to which the exhaust valves are kept open or closed continuously regulated by the degree of displacement of the camshaft in the axial direction, so that the relative position of the camshaft with respect to the crankshaft is never changed. Here are naturally frustoconical in addition to the normal j exhaust cams on the shaft Brake cams provided into which the exhaust cams gradually merge.
Das Verfahren sowie die Einrichtung zur Ausführung desselben ist an Hand der Zeichnung verständlich gemacht, in welcher A die Kurbelwelle, B das Zahnrad auf der Kurbelwelle, C das Zahnrad auf der Auspuffnockenwelle, D die Lager der Auspuffnockenwelle, E die Auspuffnockenwelle, F den normalen Auspuffnocken, G den zum Erleichtern des Anlassens dienenden Dekompresseurnocken, H den kegelstumpfförmigen Teil des Auspuffnockens oder Bremsnocken und / das Auspuffventil bedeutet.The method and the device for carrying out the same are made understandable with reference to the drawing, in which A the crankshaft, B the gear on the crankshaft, C the gear on the exhaust camshaft, D the bearings on the exhaust camshaft, E the exhaust camshaft, F the normal exhaust cam , G denotes the decompression cam used to facilitate starting, H denotes the frustoconical part of the exhaust cam or brake cam and / the exhaust valve.
Zum Anlassen wird die Nockenwelle E derart verschoben, daß die Nocken F und G auf das Auspuffventil / wirken. Nach einer oder mehreren Zündungen wird die Welle E in ihre normale Stellung geschoben, in welcher nur der Nocken F auf das Auspuffventil / wirkt. Soll gebremst werden, so wird die Welle E noch weiter in achsialer Richtung verschoben, so daß das Auspuffventil / während sämtlicher vier Takte um ein von dem Grad der Verschiebung der Welle E abhängiges Maß geöffnet bleibt. Die dadurch bewirkte Drosselung des Auspuffes hat eine Bremsung des Motors zur Folge, deren Grad von dem GradFor starting the camshaft E is shifted in such a way that the cams F and G act on the exhaust valve /. After one or more ignitions, the shaft E is pushed into its normal position in which only the cam F acts on the exhaust valve /. If it is to be braked, the shaft E is shifted further in the axial direction so that the exhaust valve / remains open during all four cycles by an amount dependent on the degree of displacement of the shaft E. The resulting throttling of the exhaust results in a braking of the engine, the degree of which depends on the degree
der Drosselung des Auspuffes oder der Verschiebung der Welle E abhängt.the throttling of the exhaust or the displacement of the shaft E.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AT47553D AT47553B (en) | 1908-07-22 | 1909-03-11 | Method and device for braking motor vehicles with four-stroke explosive engines. |
Publications (1)
Publication Number | Publication Date |
---|---|
DE222793C true DE222793C (en) |
Family
ID=483656
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE1908222793D Expired - Lifetime DE222793C (en) | 1908-07-22 | 1908-07-22 |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE222793C (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1057385B (en) * | 1958-03-08 | 1959-05-14 | Kaelble Gmbh C | Internal combustion engine with engine brake |
WO2009021667A1 (en) * | 2007-08-10 | 2009-02-19 | Daimler Ag | Internal combustion engine valve drive switching device |
-
1908
- 1908-07-22 DE DE1908222793D patent/DE222793C/de not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1057385B (en) * | 1958-03-08 | 1959-05-14 | Kaelble Gmbh C | Internal combustion engine with engine brake |
WO2009021667A1 (en) * | 2007-08-10 | 2009-02-19 | Daimler Ag | Internal combustion engine valve drive switching device |
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