EP0637687B1 - Fuel conduits in the cylinder block of an internal combustion engine and method for constructing same - Google Patents
Fuel conduits in the cylinder block of an internal combustion engine and method for constructing same Download PDFInfo
- Publication number
- EP0637687B1 EP0637687B1 EP94110165A EP94110165A EP0637687B1 EP 0637687 B1 EP0637687 B1 EP 0637687B1 EP 94110165 A EP94110165 A EP 94110165A EP 94110165 A EP94110165 A EP 94110165A EP 0637687 B1 EP0637687 B1 EP 0637687B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- fuel
- passage
- cylinder housing
- cylinders
- bore
- 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
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B75/22—Multi-cylinder engines with cylinders in V, fan, or star arrangement
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- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
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- 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
- F02B75/00—Other engines
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
- F02B75/18—Multi-cylinder engines
- F02B2075/1804—Number of cylinders
- F02B2075/1832—Number of cylinders eight
-
- 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
- F02B3/00—Engines characterised by air compression and subsequent fuel addition
- F02B3/06—Engines characterised by air compression and subsequent fuel addition with compression ignition
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F2200/00—Manufacturing
- F02F2200/06—Casting
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49229—Prime mover or fluid pump making
- Y10T29/49231—I.C. [internal combustion] engine making
Definitions
- the invention relates to a fuel guide in the cylinder housing of an internal combustion engine and a method for producing this fuel guide according to the features specified in the preamble of claims 1 and 9.
- the invention has for its object to achieve a space-saving and at the same time weight-reducing fuel guide on the cylinder housing of an internal combustion engine by simple measures and to enable a trouble-free and inexpensive production of this fuel guide.
- the longitudinal channel Due to the special arrangement of the longitudinal channel, no additional space-consuming solid ribs or castings are necessary, and due to the special fuel connection between the receiving bore and the longitudinal channel, none are otherwise customary Ball locks are required in the cross holes passing through the receptacle. Furthermore, the longitudinal channel running away from the plug-in pumps, from which fuel branches off from the plug-in pumps via the oblique bores, does not result in an increase in temperature in the fuel.
- this connecting web can be narrow and thus also designed to save weight.
- the through channel that crosses the mount in the middle enables a diagonal arrangement of the screw fastening provided for the plug-in pump on the pump support. This means that there is no disadvantageous one-sided pump mounting.
- the positioning of the longitudinal channel in a material-reinforcing area is particularly advantageous, in which boundary walls of neighboring rooms converge and virtually form a node.
- the measure according to claim 3 leads to an unobstructed drilling of the oblique hole.
- Another step is the deep hole drilling of the through-channel, which crosses the still existing solid part. Then the large-diameter mounting hole for the plug-in pump is drilled.
- the trough-like depression with a deepest point in the middle of the receptacle serves as a drilling aid or centering the receptacle bore.
- Another advantageous measure according to claim 12 leads to a significant reduction in material removal when drilling the large receiving bore.
- upstanding receptacles 5 are formed, the receiving bores 6 of which are provided for plug-in pumps 7 (FIG. 2).
- Narrow connecting webs 8 projecting from the long side of the row of cylinders are arranged between the respective receptacles 5, in which the through channel 3 intersecting the longitudinal axis of each receptacle 5 runs.
- the longitudinal channel 2 is located in an area in which boundary walls 9, 10, 11 from neighboring rooms 12, 13, 14 run towards one another, is approximately at the level of the through-channel 3 and runs in the cylinder housing 1 next to the plug-in pumps 7.
- the oblique bore 4 leads away from the receiving bore 6 and opens into the longitudinal channel 2. The extension of this oblique bore 4 lies within the upper opening 17 of the receiving bore 6.
- FIG. 2 shows an embodiment with a plug-in pump 7 installed and the fuel flow profile indicated by arrows.
- the plug-in pump 7 has superimposed ring grooves 18, 19, of which the fuel ring groove 18 on top is connected to the oblique bore 16 and the fuel ring groove 19 on the bottom is connected to the through-channel 3.
- FIG. 3 shows the fuel feed leading to the plug-in pumps 7 and FIG. 4 shows the fuel return leading away from the plug-in pumps 7. 3, 4, the connecting webs 8 can be seen in plan view, in which the through-channels 3 run.
- the fuel guide described above is implemented in the same way in a cylinder housing 1 shown in plan view with cylinder rows 21, 22 arranged in a V-shape (FIG. 5).
- connection provided in the longitudinal center of the longitudinal channel 2 and designated 25.26 is intended for a fuel supply line (not shown) and a connection designated 27.28 for a fuel return line (not shown).
- the connections 27, 28 are located on one longitudinal half of the internal combustion engine between the upstanding receptacles 5. However, the connections 27 ', 28' can also be arranged behind the last receptacle 5 and the end face of the internal combustion engine, as can the connections 25 ', 26'.
- the respective longitudinal and through-channel of both cylinder rows can At least one end is designed without a ball lock and is connected to one another by transverse bores 30, 31 in at least one end cover 29 attached to the end of the cylinder housing 2 (shown in dash-dot lines).
- the line arrangement in at least one end cover can be such that the connections for the fuel supply line and fuel return line are provided there (indicated by arrows x, y). Instead of the end cover 29, exposed connecting lines can also be provided (not shown).
- the fuel connection of both rows of cylinders can also be formed by rectilinear transverse bores 30 ', 31' within the cylinder housing 1, specifically in the end region of the cylinder housing, or there by V-shaped bores 32, 33 which converge towards each other in the vicinity of a bearing frame wall 34 (Fig.6).
- transverse bores 30 ', 31' or the V-shaped bores 32, 33 can, however, also be provided in the case of different cylinder distances between cylinder groups of each row of cylinders (not shown).
- Each pump support has fastening holes 35, 36 which are diametrically opposite with respect to the receiving bore 6 and are arranged diagonally to the through-channel 3.
- FIG. 7 shows the cylinder housing 1 for an internal combustion engine with rows of cylinders arranged in a V-shape in the raw contour casting, in which the elongated, upstanding receptacles 5, which partially protrude sideways into the V-space of the rows of cylinders, are partially designed as solid parts.
- the upper contour or recess 37 of each receptacle 5 is pulled down like a trough and has a deepest point 37a in the longitudinal axis of FIG Recording 5 on.
- the lower contour or recess 38 of each receptacle 5 is pulled up like a blind hole to such an extent that the web-like cast solid part results between the two recesses 37, 38.
- the raw contour cast is formed on the long sides into narrow connecting webs 8, which are connected to adjacent receptacles 5.
- the connecting webs 8 lying between the receptacles 5 merely form a projection on the long side of the cylinder housing 1 (FIG. 1).
- the connecting webs 8 according to FIG. 7 can merge into an upper coolant channel wall 39 which extends between the rows of cylinders and extends along the rows of cylinders.
- a through passage 3 crossing all the receptacles 5 and running in the connecting webs can be drilled starting from both end faces of the cylinder housing 1.
- the through-channel 3 intersects the longitudinal axis of each receptacle 5.
- the longitudinal channel 2 can be drilled in the same way, advantageously simultaneously with the through-channel 3.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Description
Die Erfindung betrifft eine Kraftstofführung im Zylindergehäuse einer Brennkraftmaschine und ein verfahren zur Herstellung dieser Kraftstofführung gemäß den im Oberbegriff der Patentansprüche 1 und 9 angegebenen Merkmale.The invention relates to a fuel guide in the cylinder housing of an internal combustion engine and a method for producing this fuel guide according to the features specified in the preamble of
Aus der Druckschrift von KHD DEUTZ, "DEUTZ automotive", die neuen DEUTZ-Motorenbaureihen für Nutzfahrzeuge ab 1992, ist das Schnittbild einer der Einzel-Einspritzpumpen als Steckpumpe mit einer Kraftstofführung im Zylindergehäuse einer mehrzylindrigen Brennkraftmaschine gezeigt, bei der ein im Zylindergehäuse verlaufender Durchgangskanal der Kraftstofführung die in einer Aufnahme für die Steckpumpe vorgesehene Aufnahmebohrung kreuzt.From the KHD DEUTZ publication, "DEUTZ automotive", the new DEUTZ engine series for commercial vehicles from 1992, the sectional view of one of the single injection pumps as a plug-in pump with a fuel guide in the cylinder housing of a multi-cylinder internal combustion engine is shown, in which a through-channel running in the cylinder housing Fuel guide crosses the mounting hole provided in a receptacle for the plug-in pump.
Der Erfindung liegt die Aufgabe zugrunde, am Zylindergehäuse einer Brennkraftmaschine durch einfache Maßnahmen eine platzsparende und zugleich gewichtsreduzierende Kraftstofführung zu erreichen sowie eine problemlose und aufwandarme Herstellung dieser Kraftstofführung zu ermöglichen.The invention has for its object to achieve a space-saving and at the same time weight-reducing fuel guide on the cylinder housing of an internal combustion engine by simple measures and to enable a trouble-free and inexpensive production of this fuel guide.
Zur Lösung dieser Aufgabe dienen erfindungsgemäß die im Kennzeichen der Patentansprüche 1 und 9 angegebenen Merkmale.According to the invention, the features specified in the characterizing part of
Durch die besondere Anordnung des Längskanals sind keine zusätzlichen platzraubenden massiven Rippen bzw. Gußanhäufungen notwendig und durch die besondere Kraftstoffverbindung zwischen der Aufnahmebohrung und dem Längskanal sind keine sonst übliche Kugelverschlüsse in den die Aufnahme durchsetzenden Querbohrungen erforderlich. Ferner ergibt sich durch den abseits von den Steckpumpen verlaufenden Längskanal, von dem aus Kraftstoff über die Schrägbohrungen von den Steckpumpen abgezweigt wird, keine Temperaturzunahme im Kraftstoff.Due to the special arrangement of the longitudinal channel, no additional space-consuming solid ribs or castings are necessary, and due to the special fuel connection between the receiving bore and the longitudinal channel, none are otherwise customary Ball locks are required in the cross holes passing through the receptacle. Furthermore, the longitudinal channel running away from the plug-in pumps, from which fuel branches off from the plug-in pumps via the oblique bores, does not result in an increase in temperature in the fuel.
Dadurch, daß der Verbindungssteg lediglich den Durchgangskanal aufnimmt (Anspruch 2), kann dieser Verbindungssteg schmal und somit auch gewichtssparend ausgeführt sein. Der die Aufnahme mittig kreuzende Durchgangskanal ermöglicht eine diagonale Anordnung der für die Steckpumpe vorgesehenen Schraubenbefestigung auf der Pumpenauflage. Somit ergibt sich keine unvorteilhafte einseitige Pumpenbefestigung.The fact that the connecting web only receives the through-channel (claim 2), this connecting web can be narrow and thus also designed to save weight. The through channel that crosses the mount in the middle enables a diagonal arrangement of the screw fastening provided for the plug-in pump on the pump support. This means that there is no disadvantageous one-sided pump mounting.
Besonders vorteilhaft ist die Positionierung des Längskanals in einem materialverstärkenden Bereich, bei dem Begrenzungswände von Nachbarräumen aufeinander zulaufen und quasi einen Knoten bilden.The positioning of the longitudinal channel in a material-reinforcing area is particularly advantageous, in which boundary walls of neighboring rooms converge and virtually form a node.
Die Maßnahme gemäß Anspruch 3 führt zu einem behinderungsfreien Bohren der Schrägbohrung.The measure according to
In den weiteren Unteransprüchen sind noch förderliche Weiterbildungen der Erfindung angegeben, wobei gemäß Anspruch 6 bei einem Zylindergehäuse mit zwei Zylinderreihen die Schrägbohrung der einen Zylinderreihe und die Befestigungslöcher in der Pumpenauflage der anderen Zylinderreihe gleichzeitig mit einem einzigen Bearbeitungskopf zumindest gebohrt und gewindegebohrt werden können. Somit ergibt sich eine einzige Bearbeitungsrichtung für verschiedene Bearbeitungen bzw. Arbeitsgänge für beide Zylinderreihen.In the further subclaims, further advantageous developments of the invention are specified, wherein according to
Bei dem Verfahren zur Herstellung der Kraftstofführung wird zunächst der Längskanal und dann erst die Schrägbohrung gebohrt, damit beim Tieflochbohren unverzichtbares Kühlmittel nicht über die Schrägbohrungen abfließen kann.In the process for producing the fuel guide, first the longitudinal channel and then the oblique bore drilled so that coolant, which is indispensable for deep hole drilling, cannot flow out through the oblique holes.
Ein weiterer Arbeitsschritt erfolgt durch das Tieflochbohren des Durchgangskanals, der die noch als Massivteil bestehende Aufnahme kreuzt. Danach wird die durchmessermäßig große Aufnahmebohrung für die Steckpumpe gebohrt.Another step is the deep hole drilling of the through-channel, which crosses the still existing solid part. Then the large-diameter mounting hole for the plug-in pump is drilled.
Eine vorteilhafte Weiterbildung der Erfindung ergeben die Maßnahmen gemäß Anspruch 11, da durch die besondere Konturgebung des Rohkonturgusses im oberen Bereich der für die Steckpumpe vorgesehenen Aufnahme als Massivteil die Schrägbohrung ohne weitere Vorarbeiten gebohrt werden kann.An advantageous further development of the invention results in the measures according to
Die muldenartige Vertiefung mit einer tiefsten Stelle in Aufnahmemitte dient als Bohrhilfe bzw. Zentrierung der Aufnahmebohrung.The trough-like depression with a deepest point in the middle of the receptacle serves as a drilling aid or centering the receptacle bore.
Eine weitere vorteilhafte Maßnahme gemäß Anspruch 12 führt zu einer erheblichen Verringerung des Materialabtrags bei Bohren der großen Aufnahmebohrung.Another advantageous measure according to
Die Erfindung ist in der Zeichnung dargestellt und im folgenden näher beschrieben. Es zeigen:
- Fig. 1
- die Anordnung einer erfindungsgemäßen Kraftstofführung in einem mehrzylindrigen Zylindergehäuse mit einer für eine Steckpumpe vorgesehenen Aufnahme,
- Fig. 2
- die montierte Steckpumpe in der Aufnahmebohrung mit angedeutetem Kraftstoffverlauf,
- Fig. 3
- die Kraftstofführung nach der Linie III-III in Fig. 2,
- Fig. 4
- die Kraftstofführung nach der Linie IV-IV in Fig. 2,
- Fig. 5
- das Zylindergehäuse mit V-förmig angeordneten Zylinderreihen in Draufsicht mit angedeuteter Kraftstofführung,
- Fig. 6
- eine andere Ausgestaltung der Kraftstofführung und
- Fig. 7
- das Zylindergehäuse als Rohkonturguß.
- Fig. 1
- the arrangement of a fuel guide according to the invention in a multi-cylinder cylinder housing with a receptacle provided for a plug-in pump,
- Fig. 2
- the mounted plug-in pump in the mounting hole with the indicated fuel curve,
- Fig. 3
- the fuel line along the line III-III in Fig. 2,
- Fig. 4
- the fuel line along the line IV-IV in Fig. 2,
- Fig. 5
- the cylinder housing with rows of cylinders arranged in a V-shape in plan view with indicated fuel guide,
- Fig. 6
- another embodiment of the fuel guide and
- Fig. 7
- the cylinder housing as raw contour casting.
Ein Zylindergehäuse 1 gemäß Fig. 1, das für eine Brennkraftmaschine mit in Reihe angeordneten Zylindern vorgesehen ist, enthält eine im wesentlichen aus einem durchgehenden Längskanal 2 als Kraftstoffvorlauf und einem durchgehenden Durchgangskanal 3 als Kraftstoffrücklauf sowie aus Schrägbohrungen 4 bestehende Kraftstofführung.A
An einer Längsseite der Zylinderreihe sind hochstehende Aufnahmen 5 angeformt, deren Aufnahmebohrungen 6 für Steckpumpen 7 (Fig. 2) vorgesehen sind.On a long side of the row of cylinders,
Zwischen den jeweiligen Aufnahmen 5 sind von der Längsseite der Zylinderreihe abstehende schmale Verbindungsstege 8 angeordnet, in denen der die Längsachse jeder Aufnahme 5 schneidende Durchgangskanal 3 verläuft.Narrow connecting
Der Längskanal 2 befindet sich in einem Bereich, in dem Begrenzungswände 9,10,11 von Nachbarräumen 12,13,14 aufeinander zulaufen, liegt etwa in Höhe des Durchgangskanals 3 und verläuft im Zylindergehäuse 1 neben den Steckpumpen 7.The
Kurz unterhalb jeder Pumpenauflage 15 führt die Schrägbohrung 4 von der Aufnahmebohrung 6 weg und mündet in den Längskanal 2. Die Verlängerung dieser Schrägbohrung 4 liegt innerhalb der oberen Öffnung 17 der Aufnahmebohrung 6.Shortly below each pump support 15, the
In Fig. 2 ist eine Ausführung mit montierter Steckpumpe 7 sowie der durch Pfeile gekennzeichnete Kraftstoffströmungsverlauf gezeigt. Die Steckpumpe 7 weist übereinanderliegende Ringnuten 18,19 auf, von denen die obenliegende Kraftstoffringnut 18 mit der Schrägbohrung 16 und die untenliegende Kraftstoffringnut 19 mit dem Durchgangskanal 3 verbunden ist.FIG. 2 shows an embodiment with a plug-in
In Fig. 3 ist der zu den Steckpumpen 7 führende Kraftstoffvorlauf und in Fig. 4 der von den Steckpumpen 7 wegführende Kraftstoffrücklauf gezeigt. In beiden Fig. 3, 4 sind die Verbindungsstege 8 in Draufsicht zu sehen, in denen die Durchgangskanäle 3 verlaufen.FIG. 3 shows the fuel feed leading to the plug-in
Die zuvor beschriebene Kraftstofführung ist in gleicher Weise bei einem in Draufsicht gezeigten Zylindergehäuse 1 mit V-förmig angeordneten Zylinderreihen 21,22 realisiert (Fig. 5).The fuel guide described above is implemented in the same way in a
Längskanal 2 und Durchgangskanal 3 sind jeweils endseitig durch einen Kugelverschluß 23,24 abdichtend verschlossen. Ein in Längsmitte des Längskanals 2 vorgesehener und mit 25,26 bezeichneter Anschluß ist für eine Kraftstoffzuführleitung (nicht dargestellt) und ein mit 27,28 bezeichneter Anschluß für eine Kraftstoffrückführleitung (nicht dargestellt) bestimmt. Die Anschlüsse 27,28 liegen auf der einen Längshälfte der Brennkraftmaschine zwischen den hochstehenden Aufnahmen 5. Die Anschlüsse 27',28' können aber auch hinter der letzten Aufnahme 5 und der Stirnseite der Brennkraftmaschine angeordnet sein, ebenso die Anschlüsse 25',26'. Gegebenenfalls können der jeweilige Längs- und Durchgangskanal beider Zylinderreihen an mindestens einem Ende ohne Kugelverschluß ausgeführt und durch Querbohrungen 30, 31 in mindestens einem stirnseitig am Zylindergehäuse 2 angebrachten Abschlußdeckel 29 miteinander in Verbindung stehen (strichpunktiert dargestellt). Die Leitungsanordnung in mindestens einem Abschlußdeckel kann so getroffen sein, daß dort die Anschlüsse für die Kraftstoffzuführleitung und Kraftstoffrückführleitung vorgesehen sind (mit Pfeilen x,y angedeutet). Anstelle des Abschlußdeckels 29 können auch freiliegende Verbindungsleitungen vorgesehen sein (nicht dargestellt).
Die Kraftstoffverbindung beider Zylinderreihen kann auch durch geradlinig verlaufende Querbohrungen 30',31' innerhalb des Zylindergehäuses 1, und zwar im endseitigen Bereich des Zylindergehäuses, oder dort durch V-förmige Bohrungen 32,33 gebildet sein, die im nahen Bereich einer Lagerstuhlwand 34 aufeinander zulaufen (Fig.6).The fuel connection of both rows of cylinders can also be formed by rectilinear transverse bores 30 ', 31' within the
Die Querbohrungen 30',31' oder die V-förmigen Bohrungen 32,33 können aber auch bei unterschiedlichen Zylinderabständen zwischen Zylindergruppen jeder Zylinderreihe vorgesehen sein (nicht dargestellt).The transverse bores 30 ', 31' or the V-shaped bores 32, 33 can, however, also be provided in the case of different cylinder distances between cylinder groups of each row of cylinders (not shown).
Jede Pumpenauflage weist Befestigungslöcher 35,36 auf, die mit Bezug auf die Aufnahmebohrung 6 diametral gegenüberliegen und diagonal zu dem Durchgangskanal 3 angeordnet sind.Each pump support has fastening holes 35, 36 which are diametrically opposite with respect to the receiving
In Fig.7 ist das Zylindergehäuse 1 für eine Brennkraftmaschine mit V-förmig angeordneten Zylinderreihen im Rohkonturguß gezeigt, bei dem die langgestreckten hochstehenden und teilweise seitwärts in den V-Raum der Zylinderreihen ragenden Aufnahmen 5 teilweise als Massivteil ausgebildet sind. Die obere Kontur bzw. Vertiefung 37 jeder Aufnahme 5 ist muldenartig heruntergezogen und weist eine tiefste Stelle 37a in der Längsachse der Aufnahme 5 auf. Die untere Kontur bzw. Vertiefung 38 jeder Aufnahme 5 ist sacklochartig so weit hochgezogen, daß sich zwischen beiden Vertiefungen 37, 38 das stegähnlich gegossene Massivteil ergibt.7 shows the
Ferner ist der Rohkonturguß an den Längsseiten zu schmalen Verbindungsstegen 8 ausgeformt, die mit benachbarten Aufnahmen 5 verbunden sind. Bei einreihigem Zylindergehäuse bilden die zwischen den Aufnahmen 5 liegenden Verbindungsstege 8 lediglich einen Vorsprung an der Längsseite des Zylindergehäuses 1 (Fig.1). Bei zweireihigem Zylindergehäuse 1 können die Verbindungsstege 8 gemäß Fig. 7 in eine zwischen den Zylinderreihen verlaufende obenliegende Kühlmittelkanalwand 39 übergehen, die sich längs den Zylinderreihen erstreckt.Furthermore, the raw contour cast is formed on the long sides into narrow connecting
Um in den Rohkonturguß die Kraftstofführung einzubringen, kann als erster Arbeitsschritt eine sämtliche Aufnahmen 5 kreuzender und in den Verbindungsstegen verlaufender durchgehender Durchgangskanal 3 von beiden Stirnseiten des Zylindergehäuses 1 beginnend gebohrt werden. Der Durchgangskanal 3 schneidet dabei die Längsachse jeder Aufnahme 5. Der Längskanal 2 kann auf gleiche Weise gebohrt werden, vorteilhafterweise gleichzeitig mit dem Durchgangskanal 3. Nachfolgend kann ausgehend von dem zugleich als Bohransatzfläche dienenden und schräg verlaufenden Wandbereich 37b der Vertiefung 37 jeder Aufnahme 5 die in den Längskanal 2 mündende Schrägbohrung 16 und als letztes die für die Steckpumpe 7 vorgesehene Aufnahmebohrung 6 gebohrt werden, wobei die tiefste Stelle der Vertiefung 37 in Aufnahmemitte bzw. in der Längsachse der Aufnahme 5 eine Bohrzentrierhilfe darstellt. Beim Bohren ergibt sich ein geringer Materialabtrag, da das Massivteil lediglich einen kleinen Steg in der langgestreckten Aufnahme 5 bildet.In order to introduce the fuel guide into the raw contour casting, as a first work step a through
Claims (12)
- Fuel guidance in the cylinder housing (1) of an internal combustion engine having cylinders disposed in series and upright housings (5) with receiving bores (6) for push-in pumps (7) which communicate with pipes for the feed and return of fuel and of which one crosses the receiving housings as a through-passage (3), characterised in that at least approximately at the height of the through-passage (3) provided as the fuel return, a continuous longitudinal passage (2) is disposed as a fuel feed alongside the push-in pumps (7) in the cylinder housing (1) which communicates with the push-in pumps (7) via associated oblique bores (4), each of which when extended lies within the opening (17) of the associated receiving bore (6).
- Fuel guidance according to Claim 1, characterised in that the housings (5) provided for the push-in pumps (7) project away from the long side of the row of cylinders and are connected to one another by connecting webs which project from the long side and in that the through-passage (3), as a fuel return, extends through all connecting webs (8) and housings (5), intersecting these latter at least approximately centrally.
- Fuel guidance according to Claim 1 or 2, characterised in that the longitudinal passage (2) lies in the intersection of walls (9, 10, 11) which form the boundary walls of adjacent spaces.
- Fuel guidance according to Claim 1, with on each housing a pump support provided for the push-in pump, characterised in that in the region close to each pump support (15), the inclined bores (4) connected to the longitudinal passage (2) open out into the respective receiving bore (6).
- Fuel guidance according to one of the preceding Claims, characterised in that the longitudinal passage (2) and the through-passage (3) extend over the entire length of the cylinder housing (1) and are at both ends of the passage closed in sealing-tight manner by a ball closure means (23, 24).
- Fuel guidance according to one of the preceding Claims and which is provided for an internal combustion engine with a V-wise arrangement of rows of cylinders, characterised in that the oblique bore (4) associated with each cylinder in the two rows of cylinders (21,22) is disposed axially parallel with the receiving bores (6) of the oppositely disposed row of cylinders.
- Fuel guidance according to Claim 6, characterised in that the respective longitudinal and through-passage of both rows of cylinders communicate with one another through transverse bores (30, 31) which extend in at least one closure cover provided at the end of the cylinder housing.
- Fuel guidance according to Claim 6, characterised in that the respective longitudinal and through-passage of the two rows of cylinders are connected to one another by transverse bores (30', 31') disposed in the cylinder housing (1), so that they extend either in a straight line or in a V (32, 33), converging on one another in the nearby area of the bearing block wall (34) of the cylinder housing.
- A method of establishing fuel guidance in a cylinder housing as a roughly-contoured casting according to one of the preceding Claims, characterised in that, in the region of each housing (5) provided for the push-in pump (7), the roughly-contoured casting is constructed as a solid part and the through-passage (3) and longitudinal passage (2) in the cylinder housing is drilled by deep-bore drilling and that following the deep-bore drilling firstly each oblique bore (4) opening into the longitudinal passage (2) and finally the receiving bores (6) accommodating the push-in pump (7) are drilled.
- A method according to Claim 9, characterised in that the deep-bore drilling of the longitudinal and through-passages (2, 3) take place in one working operation, from both ends of the cylinder housing (1).
- A method according to Claim 9, characterised in that in the upper part of the housing (5) which is constructed as a solid part, there is a trough-like depression (37) with a lowest point (37a) in the centre of the housing, an obliquely extending wall area (37b) of the depression being at the same time a drilling-commencement area for the oblique bore (4) which extends at least approximately at a right-angle to the drilling-commencement area.
- A method according to one of the preceding Claims, characterised in that, prior to drilling of the receiving bore (6), the area of the housing (5) remote from the trough-like depression and provided for the push-in pump, the roughly-contoured casting is hollow-cast, the solid part between the hollow casting and the depression being of web-like construction.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4326162 | 1993-08-04 | ||
| DE4326162A DE4326162C1 (en) | 1993-08-04 | 1993-08-04 | Fuel guide in the cylinder housing of an internal combustion engine and method for producing this fuel guide |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0637687A1 EP0637687A1 (en) | 1995-02-08 |
| EP0637687B1 true EP0637687B1 (en) | 1997-01-08 |
Family
ID=6494439
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94110165A Expired - Lifetime EP0637687B1 (en) | 1993-08-04 | 1994-06-30 | Fuel conduits in the cylinder block of an internal combustion engine and method for constructing same |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US5411001A (en) |
| EP (1) | EP0637687B1 (en) |
| DE (1) | DE4326162C1 (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4405389A1 (en) * | 1994-02-19 | 1995-08-24 | Kloeckner Humboldt Deutz Ag | V-type IC engine for vehicle |
| US5681518A (en) * | 1995-03-15 | 1997-10-28 | Handy & Harman Automotive Group | Process for molding a fuel rail assembly |
| JPH08326623A (en) * | 1995-05-31 | 1996-12-10 | Sanshin Ind Co Ltd | Fuel injection device for multicylinder two cycle engine |
| DE19600565C1 (en) * | 1996-01-09 | 1997-08-21 | Daimler Benz Ag | Fuel guidance in the cylinder housing of an internal combustion engine |
| SE510090C2 (en) * | 1996-10-11 | 1999-04-19 | Volvo Lastvagnar Ab | Elongated cylinder head with cavities for injection units and fuel supply devices |
| DE19641952C5 (en) * | 1996-10-11 | 2005-06-02 | Daimlerchrysler Ag | Fuel guide for a multi-cylinder internal combustion engine with mounting holes for plug-in pumps |
| JPH10196482A (en) * | 1997-01-16 | 1998-07-28 | Isuzu Motors Ltd | Fuel injection device of diesel engine |
| DE19716513C2 (en) | 1997-04-19 | 1999-02-11 | Mtu Friedrichshafen Gmbh | Fuel injection system for an internal combustion engine with a common rail |
| JP3856206B2 (en) * | 2001-11-06 | 2006-12-13 | 株式会社デンソー | Accumulated container and method for manufacturing the same |
| US20100144779A1 (en) * | 2007-02-23 | 2010-06-10 | The Uab Research Foundation | Marine Alkalod Makaluvamines and Derivatives Thereof |
| US20170335791A1 (en) * | 2016-05-23 | 2017-11-23 | Caterpillar Inc. | Cylinder Head |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3546222A1 (en) * | 1985-12-27 | 1987-07-02 | Bosch Gmbh Robert | FUEL INJECTION PUMP FOR INTERNAL COMBUSTION ENGINES |
| DE3633136A1 (en) * | 1986-09-30 | 1988-04-07 | Daimler Benz Ag | MAGNETIC VALVE-CONTROLLED INJECTION DEVICE FOR PUMP AND NOZZLE FOR AIR COMPRESSING ENGINES |
| US5022371A (en) * | 1989-09-29 | 1991-06-11 | Siemens-Bendix Automotive Electronics L.P. | Molded plastic fuel rail for an internal combustion engine |
| US5163406A (en) * | 1990-08-07 | 1992-11-17 | Siemens Automotive L.P. | Intake manifold/fuel rail |
| SE468719B (en) * | 1991-07-02 | 1993-03-08 | Saab Scania Ab | FIRE PIPE ARRANGEMENT ARRANGEMENTS IN THE COMBUSTION ENGINE |
-
1993
- 1993-08-04 DE DE4326162A patent/DE4326162C1/en not_active Expired - Lifetime
-
1994
- 1994-06-30 EP EP94110165A patent/EP0637687B1/en not_active Expired - Lifetime
- 1994-08-03 US US08/285,502 patent/US5411001A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| DE4326162C1 (en) | 1994-07-28 |
| EP0637687A1 (en) | 1995-02-08 |
| US5411001A (en) | 1995-05-02 |
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