EP0947692B1 - Starthilfesystem für eine selbstzündende Brennkraftmaschine - Google Patents
Starthilfesystem für eine selbstzündende Brennkraftmaschine Download PDFInfo
- Publication number
- EP0947692B1 EP0947692B1 EP99106964A EP99106964A EP0947692B1 EP 0947692 B1 EP0947692 B1 EP 0947692B1 EP 99106964 A EP99106964 A EP 99106964A EP 99106964 A EP99106964 A EP 99106964A EP 0947692 B1 EP0947692 B1 EP 0947692B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- valve
- fuel
- valve body
- internal combustion
- combustion engine
- 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
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/06—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of combustion-air by flame generating means, e.g. flame glow-plugs
Definitions
- the invention relates to a self-igniting internal combustion engine a crankcase in which a crankshaft is rotatably supported, to which at least one connecting rod carrying a piston is articulated, the piston being formed in one of a cylinder head a cylinder covered work space is movable and the work space fuel delivered by an injection pump via a Injection line and an injection valve as well as an intake air system Combustion air can be supplied, the intake air system Preheater, consisting of a flame glow plug with a assigned constant throttle and a metering device, the additional to the assigned constant throttle without fuel return turned on in the fuel supply line to the flame glow plug is.
- Such an internal combustion engine is known from EP 08 16 673 A1.
- a metering device is in the fuel supply line to the flame glow plug, which is designed as a solenoid valve.
- This solenoid valve is made by controlled an elaborate control unit in the form that the the amount of fuel to be supplied to the flame glow plug by a corresponding Clocking is set or dosed.
- This control is prone to failure on the one hand, and on the other hand is subject to the solenoid valve because of the constant opening and closing of one insignificant wear.
- the invention has for its object such a system further training, so that this system in all operating states the internal combustion engine works reliably.
- the metering device is a pressure regulating shut-off valve
- the shut-off valve is designed as an on / off solenoid valve
- the solenoid-operated Interacting valve body after its release with a valve body the self-regulating pressure regulating valve in the form that the valve body forms one with a fuel supply opening constriction interacting in the valve body which, in turn, has a constriction in the valve body with the valve body seat that has a fuel discharge opening to the fuel supply line, in Flow connection is established.
- This training puts the knowledge based on that for reliable operation of the preheater This one is related to time in the respective operating states constant amount of fuel must be supplied. However, this means that the fuel pressure must be constant.
- a valve body is in the valve body with a valve body seat surface against a compression spring a valve seat pressable and by a solenoid valve in this position is noticeable.
- This is a simple design with this Pressure regulating shut-off valve first a conventional shut-off valve created to turn off the preheater is needed.
- This solenoid valve is a simple on / off solenoid valve trained so that none of its functional scope big demands are made.
- the injection system is a High-pressure injection system, the rest with caseless single injection pump elements can be equipped. These single injection pump elements are directly in the crankcase Internal combustion engine used and with short injection lines connected to the injectors. Especially in such a system is the system pressure during the starting phase of the internal combustion engine, which is built up by a fuel feed pump, strong fluctuating, the pressure fluctuations being of the order of magnitude of approx. 5 bar (1 bar system pressure during the start phase and 6 bar System pressure during the normal operating phase).
- the high pressure injection system of a self-igniting internal combustion engine is according to the embodiment for a four-cylinder Engine designed.
- a fuel feed pump 1 sucks the fuel from a fuel tank 2 and promotes this a fuel filter 3 via a fuel supply line 4a four single injection pump elements 5, which are housed in the crankcase the internal combustion engine are used.
- the fuel supply line 4a is also in the crankcase integrated.
- the single injection pump elements 5 are via short injection lines 6 connected to injectors 7, which in the Cylinder head (part) assigned to each cylinder or work area the internal combustion engine are used and that of the single injection pump elements 5 delivered fuel into the work area inject.
- Each of the injection valves 7 has a leakage oil line 8 connected, which open into a common manifold 9.
- This manifold 9 in turn opens into the fuel tank 2. Furthermore, an overflow line opens into the collecting line 9 10, the continuation of the fuel supply line 4a behind represents the last single injection pump 5 and in the overflow line a throttle 11 and, in parallel, an overflow valve 12 are switched on.
- the throttle 11 ensures that the fuel supply line 4a always from a small amount of fuel is flowed through, so that, for example, a uniform temperature prevails in the entire fuel supply line 4a.
- the throttle 11 ensures a counter-pressure fuel system at the start of the internal combustion engine. This is an improved one Suction of the fuel pump 1 allows. conditioned the high-pressure injection system prevails in the fuel supply line 4a is a fuel pressure that depends on the operating state the internal combustion engine in the range from approx. 1 bar to approx. 6 bar fluctuates.
- the flame glow plug 14 is on the air inlet side in the Intake air system of the internal combustion engine is used and serves in particular when the engine is cold started as a preheating device for the combustion air to be supplied to the combustion chambers. Doing so the preheating device until a predeterminable operating temperature is reached the internal combustion engine operated.
- the Flame glow plug 14 consists essentially of one Glow plug in a mixing chamber for mixing fuel and air is used. The fuel is transferred to this mixing chamber a constant choke integrated into the flame glow plug 14 from the Fuel supply line 4b is supplied while the air is the intake air system is removed.
- the pressure regulating shut-off valve 13 has the following according to FIG. 2 Structure on:
- a valve body 15 has a cylindrical recess in which a valve body 16 is movably inserted.
- the Valve body 16 has a valve body seat surface 17, which by a Compression spring 18 which engages the valve body 16 against a valve seat 19 is pressed.
- the fuel flow is from a fuel supply opening 20 to a fuel discharge opening 21, which in the Fuel supply line 4b are turned on, interrupted.
- On the valve body 16 does not engage via an actuating element 22 shown solenoid valve, which the valve body 16 in the illustrated Determines position or releases.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Combustion Methods Of Internal-Combustion Engines (AREA)
- Ignition Installations For Internal Combustion Engines (AREA)
- Electrical Control Of Ignition Timing (AREA)
Description
- Fig. 1:
- ein Gesamtschaltschema des Kraftstoffversorgungssystems für die Einspritzvorrichtung und die Vorwärmeinrichtung und
- Fig. 2:
- einen Schnitt durch das Druckregulier-Absperrventil.
Claims (3)
- Selbstzündende Brennkraftmaschine mit einem Kurbelgehäuse, in dem eine Kurbelwelle drehbar gelagert ist, an der zumindest ein einen Kolben tragendes Pleuel angelenkt ist, wobei der Kolben in einem von einem Zylinderkopf unter Bildung eines Arbeitsraums abgedeckten Zylinder bewegbar ist und dem Arbeitsraum von einer Einspritzpumpe (5) geförderter Kraftstoff über eine Einspritzleitung (6) und ein Einspritzventil (7) sowie über ein Ansaugluftsystem Brennluft zuführbar sind, wobei das Ansaugluftsystem eine Vorwärmeinrichtung, bestehend aus einer Flammglühkerze (14) mit einer zugeordneten Konstantdrossel und einer Dosiereinrichtung, die zusätzlich zu der zugeordneten Konstantdrossel kraftstoffrückleitungslos in die Kraftstoffversorgungsleitung (4b) zu der Flammglühkerze (14) eingeschaltet ist, aufweist,
dadurch gekennzeichnet, dass die Dosiereinrichtung ein Druckregulier-Absperrventil (13) ist, wobei das Absperrventil als Ein-/Aus-Magnetventil ausgebildet ist, dessen magnetbetätigter Ventilkörper (16) nach dessen Freigabe zusammenwirkend mit einem Ventilgrundkörper (15) das selbstregulierende Druckregulierventil in der Form bildet, dass der Ventilkörper (16) eine mit einer Kraftstoffzuführöffnung (20) in dem Ventilgrundkörper (15) zusammenwirkende Einschnürung (23) aufweist, die ihrerseits über eine Gegeneinschnürung (24) in dem Ventilgrundkörper (15) mit der Ventilkörpersitzfläche (17), die eine Kraftstoffabgabeöffnung (21) zu der Kraftstoffversorgungsleitung (4b) beherrscht, in Strömungsverbindung steht. - Selbstzündende Brennkraftmaschine nach Anspruch 1,
dadurch gekennzeichnet, dass in dem Ventilgrundkörper (15) ein Ventilkörper (16) mit einer Ventilkörpersitzfläche (17) von einer Druckfeder (18) gegen einen Ventilsitz (19) pressbar ist und von einem Magnetventil in dieser Stellung feststellbar ist. - Selbstzündende Brennkraftmaschine nach einem der vorherigen Ansprüche,
dadurch gekennzeichnet, dass das Einspritzsystem ein Hochdruck-Einspritzsystem ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19815042A DE19815042A1 (de) | 1998-04-03 | 1998-04-03 | Starthilfesystem für eine selbstzündende Brennkraftmaschine |
DE19815042 | 1998-04-03 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0947692A1 EP0947692A1 (de) | 1999-10-06 |
EP0947692B1 true EP0947692B1 (de) | 2004-09-29 |
Family
ID=7863535
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP99106964A Expired - Lifetime EP0947692B1 (de) | 1998-04-03 | 1999-03-31 | Starthilfesystem für eine selbstzündende Brennkraftmaschine |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0947692B1 (de) |
AT (1) | ATE278103T1 (de) |
DE (2) | DE19815042A1 (de) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10335016B4 (de) * | 2003-07-31 | 2012-11-29 | Robert Bosch Gmbh | Verfahren zum Starten einer mehrzylindrigen Brennkraftmaschine |
DE102020002684A1 (de) | 2020-05-05 | 2021-11-11 | Felix Schiefer | Einspritzdüse und Vorrichtung zur Beladung eines Kraftstoffes mit Gas |
DE202020001914U1 (de) | 2020-05-05 | 2020-06-15 | Hartmut Schiefer | Einspritzdüse und Vorrichtung zur Beladung eines Kraftstoffes mit Gas |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2324841A1 (de) * | 1973-05-17 | 1974-12-12 | Bosch Gmbh Robert | Flammstartanlage fuer brennkraftmaschinen |
DE4032758A1 (de) * | 1990-10-16 | 1992-04-30 | Daimler Benz Ag | Vorrichtung zum aufheizen der ansaugluft bei brennkraftmaschinen mittels einer flammstartanlage |
DE19629928A1 (de) * | 1996-07-24 | 1998-01-29 | Beru Werk Ruprecht Gmbh Co A | Verfahren zum Betreiben einer Flammstartanlage für eine Brennkraftmaschine und Flammstartanlage für eine Brennkraftmaschine |
-
1998
- 1998-04-03 DE DE19815042A patent/DE19815042A1/de not_active Withdrawn
-
1999
- 1999-03-31 AT AT99106964T patent/ATE278103T1/de not_active IP Right Cessation
- 1999-03-31 EP EP99106964A patent/EP0947692B1/de not_active Expired - Lifetime
- 1999-03-31 DE DE59910618T patent/DE59910618D1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
ATE278103T1 (de) | 2004-10-15 |
DE59910618D1 (de) | 2004-11-04 |
DE19815042A1 (de) | 1999-10-07 |
EP0947692A1 (de) | 1999-10-06 |
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