DE10311493B4 - Two-stroke diesel engine - Google Patents
Two-stroke diesel engine Download PDFInfo
- Publication number
- DE10311493B4 DE10311493B4 DE10311493A DE10311493A DE10311493B4 DE 10311493 B4 DE10311493 B4 DE 10311493B4 DE 10311493 A DE10311493 A DE 10311493A DE 10311493 A DE10311493 A DE 10311493A DE 10311493 B4 DE10311493 B4 DE 10311493B4
- Authority
- DE
- Germany
- Prior art keywords
- valve
- diesel engine
- stroke diesel
- engine according
- hydraulic unit
- 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 - Fee Related
Links
Classifications
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/20—Varying fuel delivery in quantity or timing
- F02M59/36—Varying fuel delivery in quantity or timing by variably-timed valves controlling fuel passages to pumping elements or overflow passages
- F02M59/366—Valves being actuated electrically
-
- G—PHYSICS
- G08—SIGNALLING
- G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
- G08C17/00—Arrangements for transmitting signals characterised by the use of a wireless electrical link
- G08C17/02—Arrangements for transmitting signals characterised by the use of a wireless electrical link using a radio link
-
- 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
- F01L1/36—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle
- F01L1/38—Valve-gear or valve arrangements, e.g. lift-valve gear peculiar to machines or engines of specific type other than four-stroke cycle for engines with other than four-stroke cycle, e.g. with two-stroke cycle
-
- 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
- F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
- F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
-
- 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
- F02M59/00—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps
- F02M59/02—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type
- F02M59/10—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive
- F02M59/105—Pumps specially adapted for fuel-injection and not provided for in groups F02M39/00 -F02M57/00, e.g. rotary cylinder-block type of pumps of reciprocating-piston or reciprocating-cylinder type characterised by the piston-drive hydraulic drive
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Computer Networks & Wireless Communication (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Valve Device For Special Equipments (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
Zweitakt-Dieselmotor, insbesondere Zweitakt-Großdieselmotor, mit wenigstens einem mit Lufteinlassschlitzen (9) versehenen Zylinder (1), in dem ein die Lufteinlassschlitze (9) steuernder Kolben (2) bewegbar ist, der einen durch wenigstens ein Einspritzventil (8), dem eine hydraulisch betätigbare Einspritzpumpe (14) zugeordnet ist, mit Brennstoff beaufschlagbaren Brennraum (7) begrenzt; der einen Abgasauslass (10) aufweist, der durch ein mittels eines Hydraulikaggregats (13) betätigbares Auslassventil (12) verschließbar ist, wobei die Verbindungen des Hydraulikaggregats (13) des Auslassventils (12) und der Einspritzpumpe (14) mit einer Druckmittelquelle (18) mittels einer Steuerventilanordnung in Abhängigkeit von wenigstens einem zugeordneten Motorsignal aktivierbar sind, dadurch gekennzeichnet, dass dem Hydraulikaggregat (13) des Auslassventils (12) und der Einspritzpumpe (14) ein gemeinsames Proportionalventil (21) zugeordnet ist, das einen mit der Druckmittelquelle (18) verbundenen Eingang (22) und einen mit dem Hydraulikaggregat (13) des Auslassventils (12) verbundene Ausgang (24), sowie einen mit der Einspritzpumpe (14) verbundenen Ausgang (23) aufweist, wobei diese Ausgänge (23, 24) in den Endphasen einer hin-...Two-stroke diesel engine, in particular two-stroke large diesel engine, with at least one cylinder provided with air inlet slots (9) (1) in which a piston (2) controlling the air inlet slots (9) is movable, the one by at least one injection valve (8), the one hydraulically actuated Injection pump (14) is associated with fuel acted upon Combustion chamber (7) limited; having an exhaust gas outlet (10), the by a means of a hydraulic unit (13) operable Exhaust valve (12) closable is, wherein the connections of the hydraulic unit (13) of the exhaust valve (12) and the injection pump (14) with a pressure medium source (18) by means of a control valve arrangement in dependence on at least one associated motor signal are activated, characterized that the hydraulic unit (13) of the outlet valve (12) and the Injection pump (14) is assigned a common proportional valve (21), the one input (22) connected to the pressure medium source (18) and one with the hydraulic unit (13) of the exhaust valve (12). connected output (24), and one with the injection pump (14) connected output (23), these outputs (23, 24) in the final stages of an ...
Description
Die Erfindung betrifft einen Zweitakt-Dieselmotor, insbesondere einen Zweitakt-Großdieselmotor, mit wenigstens einem mit Lufteinlassschlitzen versehenen Zylinder, in dem ein die Lufteinlassschlitze steuernder Kolben bewegbar ist, der einen durch wenigstens ein Einspritzventil, dem eine hydraulisch betätigbare Einspritzpumpe zugeordnet ist, mit Brennstoff beaufschlagbaren Brennraum begrenzt, der einen Abgasauslass aufweist, der durch ein mittels eines Hydraulikaggregats betätigbares Auslassventil verschließbar ist, wobei die Verbindungen des Hydraulikaggregats des Auslassventils und der Einspritzpumpe mit einer Druckmittelquelle mittels einer Steuerventilanordnung in Abhängigkeit von wenigstens einem zugeordneten Motorsignal aktivierbar sind.The The invention relates to a two-stroke diesel engine, in particular a Two-stroke diesel engine, with at least one cylinder provided with air inlet slots, in which a piston controlling the air inlet slots is movable, the one by at least one injection valve, which is a hydraulically actuated Injection pump is associated with fuel acted upon combustion chamber limited, having an exhaust outlet, which by means of a hydraulic unit operable Exhaust valve closable is, wherein the connections of the hydraulic unit of the exhaust valve and the injection pump with a pressure medium source by means of a control valve arrangement dependent on can be activated by at least one associated motor signal.
In der Praxis umfasst die Steuerventilanordnung ein der Einspritzpumpe zugeordnetes Proportionalventil und ein dem Hydraulikaggregat des Auslassventils zugeordnetes Schaltaggregat. Zwei Ventile sind aufwendig. Außerdem ist davon auszugehen, dass das Schaltventil lediglich den Öffnungs- und Schließzeitpunkt steuert. Eine Steuerung der Öffnungs- und Schließbewegung ist hiermit nicht möglich. Es können sich daher schlagartige Bewegungen des Kolbens des dem Auslassventil zugeordneten Hydraulikaggregats und damit auch des Auslassventils selbst ergeben, was zu schlagartigen Druckspitzen im hydraulischen System und zu hohen mechanischen Belastungen der mechanischen Bauteile führen kann. Um dem entgegenzuwirken ist das Hydraulikaggregat des Auslassventils vielfach mit einer Endlagendämpfungseinrichtung versehen, was jedoch aufwendig ist.In In practice, the control valve assembly comprises one of the injection pump associated proportional valve and the hydraulic unit of the Outlet valve associated switching unit. Two valves are expensive. Furthermore It can be assumed that the switching valve only covers the opening and closing time controls. A control of the opening and closing movement is not possible hereby. It can Therefore, sudden movements of the piston of the exhaust valve associated hydraulic unit and thus also the exhaust valve itself, which leads to sudden pressure peaks in the hydraulic System and can lead to high mechanical loads on the mechanical components. To counteract this is the hydraulic unit of the exhaust valve often with a cushioning device provided, which is expensive.
Hiervon ausgehend ist es daher die Aufgabe der vorliegenden Erfindung, bei einer Anordnung eingangs erwähnter Art die Steuerventilanordnung zu vereinfachen und gleichzeitig eine schonende Betriebsweise zu ermöglichen.Of these, It is therefore the object of the present invention to provide an arrangement initially mentioned Type of simplify the control valve assembly and at the same time a to allow careful operation.
Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass dem Hydraulikaggregat des Auslassventils und der Einspritzpumpe ein gemeinsames Proportionalventil zugeordnet ist, das einen mit der Druckmittelquelle verbundenen Eingang und zwei dem Hydraulikaggregat des Auslassventils bzw. der Einspritzpumpe zugeordnete Ausgänge aufweist, die in den Endphasen einer hin- und hergehenden Bewegung eines Ventilschiebers alternativ mit dem Eingang verbunden und in der Mittelstellung des Ventilschiebers abgesperrt sind, der mittels einer durch einen mit einem Eingang für wenigstens ein Motorsignal versehenen Signalwandler beeinflussbaren Servoeinrichtung mit einer signalabhängigen Geschwindigkeit bewegbar ist.These Task is inventively characterized solved, that the hydraulic unit of the exhaust valve and the injection pump a common proportional valve is assigned, the one with the pressure medium source connected input and two the hydraulic unit The output valve or the injection pump has associated outputs, in the final stages of a back and forth forthcoming movement of a valve spool alternatively with the input connected and shut off in the middle position of the valve spool are by means of a with an input for at least a motor signal provided signal converter influenceable servo device with a signal dependent Speed is movable.
Diese Maßnahmen führen zu einer kostengünstigen und dennoch sehr komfortablen Anordnung. Der Wegfall eines zweiten Ventils ergibt eine Vereinfachung und Verbilligung der Steuerventilanordnung einschließlich der erforderlichen Verkabelung. Gleichzeitig ist sichergestellt, dass mittels des gemeinsamen Proportionalventils nicht nur der Verlauf des Hubs der Einspritzpumpe, sondern auch des Hydraulikaggregats des Auslassventils gesteuert wird. Druckstöße und mechanische Schläge lassen sich somit in vorteilhafter Weise vermeiden, ohne das dem Hydraulikaggregat des Auslassventils eine Endlagendämpfungseinrichung zugeordnet sein müsste. Dadurch, dass das Proportionalventil so aufgebaut ist, dass sein Ventilschieber ausgehend von einer mittleren 0-Stellung lediglich gegenläufig bewegt werden muss, um die Einspritzpumpe bzw. das Hydraulikaggregat des Auslassventils zu aktivieren, kann die Aktivierung dieser Organe in vorteilhafter Weise unabhängig voneinander erfolgen. Zudem werden ein besonders einfacher Aufbau des Proportionalventils und der diesem zugeordneten Servoeinrichtung erreicht sowie unzulässige Überschneidungen der zu steuernden Vorgänge zuverlässig vermieden.These activities to lead at a low cost yet very comfortable arrangement. The omission of a second Valve results in a simplification and cheapening of the control valve assembly including the required wiring. At the same time it is ensured that by means of the common proportional valve not only the course the stroke of the injection pump, but also the hydraulic unit the exhaust valve is controlled. Pressure surges and mechanical impacts can be thus advantageously avoid without the hydraulic unit the exhaust valve assigned a Endlagendämpfungseinrichung would have to be. Thereby, that the proportional valve is constructed so that its valve spool starting from a middle 0-position only be moved in opposite directions must to the injection pump or the hydraulic unit of the exhaust valve To activate, activation of these organs can be beneficial independently done from each other. In addition, a particularly simple structure the proportional valve and the associated servo device reached as well as inadmissible overlaps the processes to be controlled reliable avoided.
Aus
der
Vorteilhafte Ausgestaltungen und zweckmäßige Fortbildungen der übergeordneten Maßnahmen sind in den Unteransprüchen angegeben.advantageous Embodiments and appropriate training the parent Measures are in the subclaims specified.
So kann die dem Ventilschieber zugeordnete Servoeinrichtung vorteilhaft zwei im Ventilschieber angeordnete, achsparallele Druckräume aufweisen, denen gegenläufig am Schiebergehäuse abgestützte Kolben zugeordnet sind und die über zugeordnete, im Schieber vorgesehene Strömungskanäle mit dem am Ventileingang anstehenden Druckmittel beaufschlagbar sind, wobei wenigstens ein Strömungsweg mittels eines im Schieber angeordneten, achsparallelen Servoschiebers kontrollierbar ist, der mit einem den Signalwandler bildenden Linearmotor verbunden ist. Diese Maßnahmen stellen sicher, dass auch der Ventilschieber mittels des am Ventileingang anstehenden Druckmittels bewegbar ist, sodass weitere Antriebsmittel entfallen können. Die zur Größe des zugeordneten Motorsignals proportionale Größe der Bewegung des Linearmotors gibt dabei über die Verstellung des Servoschiebers die Größe des freigegebenen Strömungsquerschnitts und damit die Geschwindigkeit der erzielten Bewegung des Ventilschiebers vor, die dementsprechend proportional zur Bewegung des Linearmotors und damit proportional zur Größe des zugeordneten Motorsignals ist.Thus, the servo valve assigned to the servo device advantageously have two arranged in the valve spool, axially parallel pressure chambers, which are assigned in opposite directions on the slide housing supported pistons and provided via associated, provided in the slide flow channels with the pressure applied to the valve inlet pressure, at least one flow path by means of an im Sliders arranged, paraxial len servo slide is controlled, which is connected to a signal converter forming the linear motor. These measures ensure that the valve spool is movable by means of the pressure medium present at the valve inlet, so that further drive means can be dispensed with. The size of the movement of the linear motor, which is proportional to the size of the associated motor signal, determines the size of the released flow cross section and thus the speed of the movement of the valve slide via the adjustment of the servo slide, which is proportional to the movement of the linear motor and thus proportional to the size of the associated motor signal is.
Zweckmäßig kann der Linearmotor als Piezoelement ausgebildet sein. Dieses stellt einen elektromechanischen Wandler dar, durch den eine elektrische Größe in einen Verschiebeweg umgesetzt wird. Die Ansteuerung kann daher auf elektrischem Wege erfolgen, was eine einfache Signalübertragung ermöglicht.Appropriately the linear motor be designed as a piezoelectric element. This poses an electromechanical transducer through which an electrical Size in one Displacement is implemented. The control can therefore by electrical means take place, which allows a simple signal transmission.
Weitere vorteilhafte Ausgestaltungen und zweckmäßige Fortbildungen der übergeordneten Maßnahmen sind in den restlichen Unteransprüchen angegeben und aus der nachstehenden Beispielsbeschreibung anhand der Zeichnung näher entnehmbar.Further advantageous embodiments and expedient developments of the higher-level measures are specified in the remaining subclaims and from the the following example description with reference to the drawing closer.
In der nachstehend beschriebenen Zeichnung zeigen:In the drawings described below show:
Hauptanwendungsgebiet der vorliegenden Erfindung sind Zweitakt-Großdieselmotoren, wie sie beispielsweise als Schiffsantriebe etc. Verwendung finden. Hierbei handelt es sich um vergleichsweise langsam laufende Motoren mit einem großen Hub.Main application the present invention are two-stroke large diesel engines, as they are used, for example, as marine propulsion etc. These are comparatively slow-moving engines with a great Hub.
Ein
Zweitakt-Großdieselmotor
dieser Art enthält
in der Regel mehrere, in Reihe hintereinander angeordnete Zylinder.
In
Die
bei der Verbrennung entstehenden Abgase gelangen über einen
im Bereich des Zylinderdeckels vorgesehenen, zentralen Auslass
Das
Hydraulikaggregat
Zur
Steuerung der Druckbeaufschlagung des Hydraulikaggregats
In
einer mittleren 0-Stellung des Ventilschiebers
Dem
Ventilschieber
Im
dargestellten Beispiel ist dem Linearmotor
Die
mittels des Linearmotors
Die
Druckräume
Die
Größe der vom
Linearmotor
In
einfachen Fällen
genügt
es, wenn der einem Druckraum
Bei
Mehrzylindermotoren ist jedem Zylinder
Claims (12)
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10311493A DE10311493B4 (en) | 2003-03-15 | 2003-03-15 | Two-stroke diesel engine |
JP2004032546A JP4149938B2 (en) | 2003-03-15 | 2004-02-09 | Two-stroke diesel engine |
KR1020040011456A KR100717146B1 (en) | 2003-03-15 | 2004-02-20 | Two-stroke diesel engine |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10311493A DE10311493B4 (en) | 2003-03-15 | 2003-03-15 | Two-stroke diesel engine |
Publications (2)
Publication Number | Publication Date |
---|---|
DE10311493A1 DE10311493A1 (en) | 2004-10-07 |
DE10311493B4 true DE10311493B4 (en) | 2005-01-05 |
Family
ID=32945908
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE10311493A Expired - Fee Related DE10311493B4 (en) | 2003-03-15 | 2003-03-15 | Two-stroke diesel engine |
Country Status (3)
Country | Link |
---|---|
JP (1) | JP4149938B2 (en) |
KR (1) | KR100717146B1 (en) |
DE (1) | DE10311493B4 (en) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10311493B4 (en) | 2003-03-15 | 2005-01-05 | Man B & W Diesel A/S | Two-stroke diesel engine |
DE10325067B3 (en) * | 2003-06-03 | 2005-01-13 | Man B & W Diesel A/S | Control apparatus for two-stroke large sized engine, has servo-valve slider which can be slid into main-valve slider to control at least one of flow paths arranged in main-valve slider |
CN101482040B (en) * | 2005-02-02 | 2012-11-28 | 曼柴油机和涡轮公司,德国曼柴油机和涡轮欧洲股份公司的联营公司 | Crosshead type large two-stroke diesel engine |
JP2008527239A (en) * | 2005-02-02 | 2008-07-24 | エムエーエヌ・ディーゼル・エーエス | Large 2-cycle diesel engine with hydraulically operated exhaust gas valve |
CN101487405B (en) * | 2005-02-02 | 2012-05-30 | 曼柴油机和涡轮公司,德国曼柴油机和涡轮欧洲股份公司的联营公司 | Crosshead type large two-stroke diesel engine |
KR100937576B1 (en) * | 2005-05-10 | 2010-01-20 | 현대중공업 주식회사 | Diesel combustion system driven by rotating high pressure pipe |
KR100686447B1 (en) * | 2005-10-31 | 2007-02-26 | 현대중공업 주식회사 | 4 stroke diesel combustion engine driven by hydraulically actuated fuel pump, intake valve and exhaust valve |
KR100655038B1 (en) * | 2005-11-11 | 2006-12-06 | 현대중공업 주식회사 | Diesel combustion system driven by rotating cam and flow control valve |
KR102216353B1 (en) | 2014-03-25 | 2021-02-17 | 한스 옌젠 루브리케이터스 에이/에스 | Method and system for dosing lubricating oil into cylinders |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5237968A (en) * | 1992-11-04 | 1993-08-24 | Caterpillar Inc. | Apparatus for adjustably controlling valve movement and fuel injection |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0338036B1 (en) * | 1987-10-20 | 1992-04-08 | Nova-Werke Ag | Linear actuator with hydraulic amplification |
DK0539320T3 (en) * | 1991-10-23 | 1995-03-20 | New Sulzer Diesel Ag | Device for hydraulically activating an exhaust valve in a piston combustion engine |
DK170121B1 (en) | 1993-06-04 | 1995-05-29 | Man B & W Diesel Gmbh | Sliding valve and large two stroke internal combustion engine |
KR20010057637A (en) * | 1999-12-23 | 2001-07-05 | 이계안 | A hydraulic valve actuating apparatus for internal combustion engines |
DE10311493B4 (en) | 2003-03-15 | 2005-01-05 | Man B & W Diesel A/S | Two-stroke diesel engine |
-
2003
- 2003-03-15 DE DE10311493A patent/DE10311493B4/en not_active Expired - Fee Related
-
2004
- 2004-02-09 JP JP2004032546A patent/JP4149938B2/en not_active Expired - Lifetime
- 2004-02-20 KR KR1020040011456A patent/KR100717146B1/en active IP Right Grant
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5237968A (en) * | 1992-11-04 | 1993-08-24 | Caterpillar Inc. | Apparatus for adjustably controlling valve movement and fuel injection |
Also Published As
Publication number | Publication date |
---|---|
DE10311493A1 (en) | 2004-10-07 |
KR100717146B1 (en) | 2007-05-10 |
JP4149938B2 (en) | 2008-09-17 |
JP2004278524A (en) | 2004-10-07 |
KR20040081712A (en) | 2004-09-22 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
OP8 | Request for examination as to paragraph 44 patent law | ||
8181 | Inventor (new situation) |
Inventor name: ROSENLUND, HANSEN, ERIK, VANLOESE, DK |
|
8364 | No opposition during term of opposition | ||
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |