DE102005039805A1 - Safety device for single-cylinder diesel engine, has servo device (8) as actuating unit for opening exhaust valve of engine until engine is switched off, when predetermined overpressure is reached in crankcase of engine - Google Patents
Safety device for single-cylinder diesel engine, has servo device (8) as actuating unit for opening exhaust valve of engine until engine is switched off, when predetermined overpressure is reached in crankcase of engine Download PDFInfo
- Publication number
- DE102005039805A1 DE102005039805A1 DE200510039805 DE102005039805A DE102005039805A1 DE 102005039805 A1 DE102005039805 A1 DE 102005039805A1 DE 200510039805 DE200510039805 DE 200510039805 DE 102005039805 A DE102005039805 A DE 102005039805A DE 102005039805 A1 DE102005039805 A1 DE 102005039805A1
- Authority
- DE
- Germany
- Prior art keywords
- engine
- safety device
- crankcase
- overpressure
- servo
- 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.)
- Ceased
Links
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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
-
- 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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
- F01L1/182—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft
- F01L1/183—Centre pivot rocking arms the rocking arm being pivoted about an individual fulcrum, i.e. not about a common shaft of the boat type
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
- F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
- F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
- F01M13/00—Crankcase ventilating or breathing
- F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
- F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
- F01M13/022—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure using engine inlet suction
- F01M13/023—Control valves in suction conduit
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D17/00—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling
- F02D17/04—Controlling engines by cutting out individual cylinders; Rendering engines inoperative or idling rendering engines inoperative or idling, e.g. caused by abnormal conditions
-
- 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
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/14—Tappets; Push rods
- F01L1/146—Push-rods
-
- 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
- F01L2800/00—Methods of operation using a variable valve timing mechanism
- F01L2800/03—Stopping; Stalling
-
- 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
- F01L2800/00—Methods of operation using a variable valve timing mechanism
- F01L2800/12—Fail safe operation
-
- 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
- F01L2820/00—Details on specific features characterising valve gear arrangements
- F01L2820/03—Auxiliary actuators
- F01L2820/034—Pneumatic engines
-
- 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
- F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
- F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M25/00—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture
- F02M25/06—Engine-pertinent apparatus for adding non-fuel substances or small quantities of secondary fuel to combustion-air, main fuel or fuel-air mixture adding lubricant vapours
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
Abstract
Description
Die Erfindung betrifft eine Sicherheitseinrichtung gegen Überdrehzahl bei einem Dieselmotor, insbesondere bei einem Einzylinder-Dieselmotor, welcher mit einer Entlüftung des Kurbelgehäuses in den Ansaugtrakt versehen ist.The The invention relates to a safety device against overspeed in a diesel engine, in particular in a single-cylinder diesel engine, which with a vent of the crankcase is provided in the intake system.
Die Emissionsgesetzgebung verpflichtet Motorenhersteller ab Januar 2005, dass das Blow By nicht mehr ins Freie geleitet werden darf, sondern über den Ansaugtrakt dem Motor zugeführt werden muss.The Emission legislation obliges engine manufacturers from January 2005, that the Blow By may no longer be directed into the open, but over the Intake tract supplied to the engine must become.
Würde ein derart ausgestalteter laufender Motor mitsamt dem Arbeitsgerät wie z.B. Vibrationsplatte, Einbandagenwalze oder Transportkuli umkippen, würde die in den Ansaugtrakt rückgeführte Kurbelgehäuseentlüftung mit Motoröl geflutet mit der Folge einer unkontrollierten Überdrehzahl des Motors bis zu dessen Totalschaden.Would one thus designed running motor together with the implement such. Upset vibratory plate, bandage roller or transport trolley, would the in the intake tract recirculated crankcase ventilation with Engine oil flooded with the result of an uncontrolled overspeed of the engine up to its total loss.
Bei längerer Kipplage sind gewisse Richtlinien zu beachten. Demgegenüber liegt der vorliegenden Erfindung die Aufgabe zu Grunde, einen Motorschaden als Folge des Umkippens des Arbeitsgeräts zu verhindern und besondere Maßnahmen vor dessen Wiederinbetriebnahme zu vermeiden.at longer Kipplage are certain guidelines to follow. In contrast, lies The present invention is based on the object of engine damage as a result of tipping over of the implement prevent and special activities before restarting it.
Diese Aufgabe wird an einer Sicherheitseinrichtung der Eingangs genannten Art dadurch gelöst, dass ein Ventil des Motors – entweder ein Auslass- oder ein Einlassventil – mit Erreichen eines bestimmten Überdrucks im Kurbelgehäuse mittels eines am Kipphebel des Ventils angreifenden druckgesteuerten Betätigungsmittels offen gehalten wird, bis der Motor dadurch abschaltet. Auf diese Weise wird der Motor automatisch abgestellt, wenn es zu einer Flutung seines Kurbelgehäuseentlüftungstrakts kommt. Erfindungsgemäß wird dabei erreicht, dass nach dem Umkippen und entsprechendem Abschalten des Motors ein Schaden am Motor vermieden wird. Wird der Motor bzw. das Arbeitsgerät an welchem er angebaut ist nach dem Umkippen unverzüglich wieder in die normale Betriebslage gebracht, so entfallen in der Regel weitere Maßnahmen vor dessen Wiederinbetriebnahme, das heißt der Motor kann wieder gestartet werden ohne zusätzliche Wartungs- bzw. Säuberungsmaßnahmen.These Task is called at a safety device of the input Kind solved by that a valve of the engine - either an outlet or inlet valve - when a certain overpressure is reached in the crankcase by means of a pressure-controlled on the rocker arm of the valve actuating means is kept open until the engine shuts off. To this Way, the engine is automatically shut off when there is a flooding his crankcase ventilation system comes. According to the invention is doing achieved that after overturning and corresponding shutdown of the engine damage to the engine is avoided. If the engine or the implement to which he is grown after tipping immediately back to normal As a rule, further measures are before its restart, that is the engine can be restarted be without additional Maintenance or cleaning measures.
Erfindungsgemäß ist vorgesehen, dass das Betätigungsmittel eine auf den Überdruck ansprechende Servoeinrichtung umfaßt. Ein Drucksignal für das Tätigwerden der Servoeinrichtung wird erfindungsgemäß dadurch erzeugt, dass der Überdruck aus dem Kurbelgehäuse des Motors über eine Steuerleitung an ein Verstellorgan der Servoeinrichtung geleitet wird.According to the invention, it is provided that the actuating means one on the overpressure appealing servo device includes. A pressure signal for action The servo device is inventively generated by the fact that the pressure from the crankcase the engine over a control line passed to an adjusting member of the servo device becomes.
Hier bei ist vorteilhaft, dass der Überdruck in der Steuerleitung über eine darin eingeschaltete Rücklaufdrossel aufrechterhalten wird und dass der Schaltpunkt der Servoreinrichtung erst bei einem Mehrfachen des maximalen betriebsüblichen Drucks im Kurbelgehäuse erreicht wird. Dabei ist zweckmäßig bei einer Flutung des Kurbelgehäuseentlüftungstrakts von einem mittleren Überdruck im Kurbelgehäuse von etwa 60 bis 200 mbar auszugehen, wobei der Schaltpunkt der Servoeinrichtung bereits bei ca. 40 mbar erreicht wird.Here is advantageous in that the pressure in the control line over a return throttle activated in it is maintained and that the switching point of the servo device reached only at a multiple of the maximum operating pressure in the crankcase becomes. It is useful in a flooding of the crankcase ventilation tract from a medium overpressure in the crankcase From about 60 to 200 mbar, where the switching point of the servo device already reached at about 40 mbar.
Grundsätzlich ist die Servoeinrichtung als Kolbenzylinderanordnung ausgebildet, deren Kolben eine auf der Außenseite des Zylinders endende Kolbenstange bewegt. Vorteilhaft kann die Kolben-Zylindereinheit mit einer Rollmembran versehen sein.Basically the servo device is designed as a piston-cylinder arrangement, the Piston one on the outside the cylinder end of the piston rod moves. Advantageously, the Piston-cylinder unit to be provided with a rolling diaphragm.
Am äußeren Ende der Kolbenstange ist zweckmäßig eine Hebelanordnung angelegt, welche mittels eines Hubglieds gegen die Unterseite eines Ventilkipphebels auf dessen bezüglich seines Drehpunkts dem Ventilstößel gegenüberliegenden Seite entsprechend dem Hub der Kolbenstange verstellbar einwirkt. Eine vorteilhafte Ausführungsform der Hebelanordnung besteht darin, dass sie ein Schwenkglied umfaßt, an welchem das Hubglied federnd angelenkt ist. Durch die Federn der Anlenkung wird erreicht, dass Schläge des Kolbens auf das geöffnete Ventil abgefangen werden können, so dass ein Motorschaden nach ansprechender Sicherheitseinrichtung wirksam vermieden wird.At the outer end the piston rod is appropriate one Lever arrangement applied, which by means of a lifting member against the Bottom of a valve rocker arm with respect to its pivot point the Valve tappets opposite Side according to the stroke of the piston rod acting adjustable. An advantageous embodiment the lever arrangement consists in that it comprises a pivoting member on which the lifting member is articulated resiliently. By the springs of the linkage is achieved that blows of the piston on the opened valve can be intercepted, so that an engine failure after appealing safety device effectively avoided.
Im Folgenden werden Ausführungsbeispiele der Erfindung anhand der Zeichnung erläutert.in the Below are embodiments of the Invention explained with reference to the drawing.
Es zeigtIt shows
Die
Sicherheitseinrichtung umfaßt
als Betätigungsmittel
eine auf den Überdruck
im Kurbelgehäuse
Beispielsweise
liegt ein mittlerer Unterdruck P1 bei einem Einzylinder-Dieselmotor
mit 230 bis 600 ccm bei 0,2 bis 2 mbar je nach Drehzahl und Belastung
des Motors. Tritt nun der Umstand des Umkippens des Gerätes mit
dem Motor ein und zwar auf die Seite, die eine Flutung des Entlüftungstraktes
Der
Druck P2 gelangt vom Kurbelgehäuse
Die
pneumatische Servoeinrichtung
Da der Motor bei geöffnetem Ventil keine ausreichende Kompression bzw. Verdichtungsendtemperatur besitzt, können keine Zündungen mehr eingeleitet werden, d.h. der Motor kommt zum Stillstand.There the engine when open Valve insufficient compression or compression end temperature owns, can no ignitions more are initiated, i. the engine comes to a standstill.
Durch
die vorbeschriebene Rücklaufdrossel
Die
Ausführungsform
nach
Die Sicherheitseinrichtung arbeitet somit als vollautomatische Schutzvorrichtung gegen Motordurchgehen in Überdrehzahl ohne Reset-Tätigkeiten nach jedem Ereignis einer ungewollten Ölflutung in den Kurbelgehäuseentlüftungstrakt bei umgekipptem Motor bzw. Arbeitsgerät.The Safety device thus operates as a fully automatic protection device against engine passage in overspeed without reset activities after any event of unwanted oil flooding into the crankcase ventilation system with overturned engine or implement.
Claims (9)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510039805 DE102005039805A1 (en) | 2005-08-22 | 2005-08-22 | Safety device for single-cylinder diesel engine, has servo device (8) as actuating unit for opening exhaust valve of engine until engine is switched off, when predetermined overpressure is reached in crankcase of engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE200510039805 DE102005039805A1 (en) | 2005-08-22 | 2005-08-22 | Safety device for single-cylinder diesel engine, has servo device (8) as actuating unit for opening exhaust valve of engine until engine is switched off, when predetermined overpressure is reached in crankcase of engine |
Publications (1)
Publication Number | Publication Date |
---|---|
DE102005039805A1 true DE102005039805A1 (en) | 2007-03-15 |
Family
ID=37762820
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE200510039805 Ceased DE102005039805A1 (en) | 2005-08-22 | 2005-08-22 | Safety device for single-cylinder diesel engine, has servo device (8) as actuating unit for opening exhaust valve of engine until engine is switched off, when predetermined overpressure is reached in crankcase of engine |
Country Status (1)
Country | Link |
---|---|
DE (1) | DE102005039805A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007054486A1 (en) | 2007-11-15 | 2009-05-28 | Motorenfabrik Hatz Gmbh & Co. Kg | Valve i.e. inlet valve or outlet valve, for use in venting system for single or multi cylinder diesel engine, has valve body compressed during mixing of preset minimum quantity of certain fluid to gaseous medium in locking position |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19615870A1 (en) * | 1996-04-22 | 1997-10-23 | Deutz Ag | Internal combustion engine with crankcase venting system |
DE4430816C2 (en) * | 1993-08-30 | 1999-05-20 | Honda Motor Co Ltd | Automatic diesel engine shutdown |
-
2005
- 2005-08-22 DE DE200510039805 patent/DE102005039805A1/en not_active Ceased
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4430816C2 (en) * | 1993-08-30 | 1999-05-20 | Honda Motor Co Ltd | Automatic diesel engine shutdown |
DE19615870A1 (en) * | 1996-04-22 | 1997-10-23 | Deutz Ag | Internal combustion engine with crankcase venting system |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007054486A1 (en) | 2007-11-15 | 2009-05-28 | Motorenfabrik Hatz Gmbh & Co. Kg | Valve i.e. inlet valve or outlet valve, for use in venting system for single or multi cylinder diesel engine, has valve body compressed during mixing of preset minimum quantity of certain fluid to gaseous medium in locking position |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE1628144C3 (en) | Suction throttle control device | |
EP1444423A1 (en) | Device for crankcase ventilation of an internal combustion engine | |
DE102006058072A1 (en) | crankcase ventilation | |
DE102005059668A1 (en) | Internal combustion engine e.g. in motor vehicle, has fresh air installation and de-gasification installation whereby de-gasification installation has oil separator for removing of oil from blow-by gases | |
DE102012207829A1 (en) | Blowby flow control system for a turbocharged engine | |
EP2305967A1 (en) | Combustion engine with a motor brake device | |
DE102016201208B4 (en) | Piston compressor with ventilation device | |
DE202004011882U1 (en) | Crankcase breather for an internal combustion engine with an exhaust gas turbocharger | |
DE102005043735A1 (en) | Ventilation valve for reciprocating internal combustion engine, has valve unit lifted from seat, so that valve is opened in direction, if positive pressure difference between pressures in crankcase and intake system exceeds preset value | |
DE3909531A1 (en) | Device for saving power in piston compressors, in particular for compressed-air generation in motor vehicles | |
DE102008032775A1 (en) | Internal combustion engine with an engine brake device and a valve clearance compensation mechanism | |
DE60222535T2 (en) | VALVE DEVICE FOR PRESSURE CONTROL IN A COMBUSTION ENGINE AND METHOD FOR SUCH A PRESSURE CONTROL | |
DE19917009A1 (en) | Vacuum piston pump has gas inlet valve which is pressure controlled and installed so that it opens during suction stroke, and preferably during first phase of it | |
EP2031237B1 (en) | Injection nozzle for injecting fuel | |
DE3012121A1 (en) | COMBUSTION ENGINE | |
DE10032891A1 (en) | Fuel feed device for variable delivery | |
DE102005039805A1 (en) | Safety device for single-cylinder diesel engine, has servo device (8) as actuating unit for opening exhaust valve of engine until engine is switched off, when predetermined overpressure is reached in crankcase of engine | |
DE3002474C2 (en) | Shut-off device | |
EP0916017B1 (en) | Fuel supply interruption device | |
DE102005048952B4 (en) | Ventilation device of a crankcase of an internal combustion engine and crankcase device | |
DE102020209830A1 (en) | AUTOMATIC GAME ADJUSTER FOR USE WITH HIGH COMPRESSION COMBUSTION ENGINES | |
EP3464899B1 (en) | Piston compressor with a closing device for the outlet line | |
DE10163781A1 (en) | Pressure regulation valve for a motor vehicle combustion engine crankcase has its components and connection to the crankcase aligned to minimize pressure loss and maximize the pressure differential over the oil mist separator | |
DE2509243A1 (en) | DEVICE FOR REGULATING THE CHARGING PRESSURE IN COMBUSTION MACHINES WITH EXHAUST GAS TURBOCHARGING | |
DE102016112447A1 (en) | Valve train for an internal combustion engine and internal combustion engine |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8131 | Rejection |