WO2000006880A1 - Cylinder head - Google Patents
Cylinder head Download PDFInfo
- Publication number
- WO2000006880A1 WO2000006880A1 PCT/EP1999/004828 EP9904828W WO0006880A1 WO 2000006880 A1 WO2000006880 A1 WO 2000006880A1 EP 9904828 W EP9904828 W EP 9904828W WO 0006880 A1 WO0006880 A1 WO 0006880A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- cylinder head
- cylinder
- screw
- head according
- side wall
- 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
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F1/42—Shape or arrangement of intake or exhaust channels in cylinder heads
- F02F1/4214—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder
-
- 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
- F02B2275/00—Other engines, components or details, not provided for in other groups of this subclass
- F02B2275/18—DOHC [Double overhead camshaft]
-
- 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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/24—Cylinder heads
- F02F2001/244—Arrangement of valve stems in cylinder heads
- F02F2001/245—Arrangement of valve stems in cylinder heads the valve stems being orientated at an angle with the cylinder axis
Definitions
- the invention relates to a cylinder head for a reciprocating piston internal combustion engine with at least two cylinders lying in series, according to the preamble of claim 1.
- Such a cylinder head is shown, for example, in DE 23 42 530, which has two intake valves and two exhaust valves per cylinder, which are actuated via two overhead camshafts and bucket tappets.
- the spark plug per cylinder is arranged in the cylinder center axis, with a central shaft being connected, in terms of casting technology, to the combustion chamber plate of the cylinder head on the one hand and to transverse walls forming camshaft bearings on the other.
- Valve actuating means
- the object of the invention is to make the generic cylinder head structurally more compact and stiffer with shorter inlet and / or outlet channels with a construction that is favorable in terms of production technology.
- the cylinder head in the area of the combustion chamber plate with the retracted side walls and between inlet and / or outlet ducts shortened between the screw slugs of the combustion chamber becomes extremely compact with a correspondingly rigid support of the combustion chamber plate and the valve actuating means above it.
- the shortening of the exhaust duct causes low exhaust gas temperature losses within the cylinder head and on the inlet side the favorable arrangement of injectors which can inject fuel into the intake valve opening cross section directly or without duct wall wetting.
- the short duct lengths and mass concentrations thus result in rapid heating to the operating temperature of the internal combustion engine and low heat losses in the duct area.
- connection surfaces resulting from the described construction can be produced without problems in terms of production technology by appropriate numerical control of an end mill, the router being immersed between the screw slugs in accordance with the course of the side walls and thus producing the flat connection surfaces with a corresponding flange contour.
- FIG. 1 shows a horizontal longitudinal section through a cylinder head of a multi-cylinder four-valve reciprocating internal combustion engine according to line I-1 of FIG. 2;
- FIG. 2 shows a cross section along the line II-II of FIG. 1 through the screw bosses between the two cylinders of the internal combustion engine for the cylinder head fastening screws; and Fig. 3 shows a further cross section along the line III-III of Figure 1 by the
- cylinder head 10 for a four-cylinder reciprocating internal combustion engine with four gas exchange valves per cylinder, only the middle section is shown in FIG. 1, which covers approximately two cylinders of the cylinder crankcase, not shown. Unless described, the cylinder head is of a conventional type.
- the cylinder head 10 produced in a casting process from a light metal alloy has a lower, flat connection surface 12 for mounting on the cylinder crankcase of the internal combustion engine and an approximately parallel connection surface 14 for a bearing cover (not shown) for the in transverse walls 16 of the cylinder head 10 in storage chairs 18, 20 mounted camshafts (not shown) of the internal combustion engine.
- the transverse walls 16 are connected to one another via a longitudinal wall 15 which runs approximately centrally over the cylinders, the longitudinal wall 15 opening into the end walls of the cylinder head 10 in a manner not shown.
- a spark plug shaft 24 is formed in each case in the longitudinal wall 15 approximately centrally above the cylinders or in their extended central axes 22, each of which opens into the combustion chamber 26 spanned by the combustion chamber plate 28 of the cylinder head 10 (cf. FIG. 3).
- Two inlet ducts 30, 32 extend from the combustion chamber plate 28 and open into a flat connecting surface 34 for the flange connection of an intake manifold, not shown.
- holes 38 are made for valve guides for the installation of the inlet valves (see longitudinal central axes 40 shown).
- annular support surfaces 42 are provided at the ends of the bores 38.
- outlet channels 44 extend from the combustion chamber plate 28 to a continuously flat connection surface 46, to which the flange of an exhaust manifold, not shown, can be connected.
- the outlet channels 44 (only one outlet channel 44 can be seen) are in front of their opening into the connection surface 46 to a common outlet channel 48 merged.
- bores 54 are made in the channel walls 52, which in turn are provided on support surfaces 56 for the helical ones
- the bearing surfaces 42, 56 of the valve springs or the valve axes 40, 50 are arranged in a radial arrangement (all valve axes 40, 50 downward inclined toward the cylinder central axis 22) such that they are immediately adjacent to one of the screw bosses 64 and 64 for the purpose of introducing force to the adjacent side wall 68, 70.
- a free space 58 for cooling liquid is provided above the combustion chamber plate 28 and is separated from the free space 60 above for lubricating oil by an approximately horizontally extending top wall 62.
- screw bosses 64 are provided perpendicular to the connection surface, in whose bores 66 cylinder head fastening screws, not shown, can be used. As FIG. 2 shows, these screw bosses 64 extend to approximately half the height of the cylinder head 10; From there, the cylinder head side walls 68, 70, which partially protrude upward and laterally delimit the free space 60, are connected to the transverse walls 16 and the cylinder head end walls, which cannot be seen.
- connection surfaces 34, 46 of the inlet channels 30, 32 or the outlet channels 48 which likewise end within the planes 72 or dip into the screw boss 64 with its edge contour (cf., for example, dashed lines 34, 46 of FIG. 2 ).
- angles ⁇ between the side walls 68, 70 arranged in a V-shape relative to one another to the connection surfaces 34, 46 are in the Cross median plane seen per cylinder (strongest curvature of the
- the undulating course of the side walls 68, 70 decreases when viewed upwards, or the radius of curvature r present in the lower region merges in the region of the connecting surface 14 with ⁇ or into a straight wall section.
- the wavy flange contours (FIG. 1, lines 74) which result in the transition area between side walls 68, 70 and plan connection surfaces 34, 46 can additionally be milled in the direction of the double arrow 78 by milling the connection surfaces 34, 46 by correspondingly controlling the end mill (indicated by 76) for the usual longitudinal feed movement can be easily produced.
- the cylinder head design described gives a construction which is particularly favorable in terms of construction and weight, with high rigidity of the combustion chamber plate and high longitudinal rigidity.
- this construction results in particularly short inlet and outlet ducts, which on the inlet side result in an arrangement of the injection valves for fuel metering that is particularly close to the combustion chamber and short exhaust gas paths on the outlet side with the associated advantages.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
Description
B E S C H R E I B U N G DESCRIPTION
ZylinderkopfCylinder head
Die Erfindung betrifft einen Zylinderkopf für eine Hubkolben- Brennkraftmaschine mit zumindest zwei in Reihe liegenden Zylindern, gemäß dem Oberbegriff des Patentanspruches 1.The invention relates to a cylinder head for a reciprocating piston internal combustion engine with at least two cylinders lying in series, according to the preamble of claim 1.
Einen derartigen Zylinderkopf zeigt beispielsweise die DE 23 42 530, der je Zylinder zwei Einlaßventile und zwei Auslaßventile aufweist, die über zwei obenliegende Nockenwellen und Tassenstößel betätigt werden. Die Zündkerze je Zylinder ist in der Zylindermittelachse angeordnet, wobei ein zentraler Schacht jeweils gießtechnisch mit der Brennraumplatte des Zylinderkopfes einerseits und mit Nockenwellenlager bildenden Querwänden andererseits verbunden ist. Daraus resultiert ein relativ steife Konstruktion mit günstiger Abstützung der Brennraumplatte gegenüber den Verbrennungsdrücken und günstiger Krafteinleitung derSuch a cylinder head is shown, for example, in DE 23 42 530, which has two intake valves and two exhaust valves per cylinder, which are actuated via two overhead camshafts and bucket tappets. The spark plug per cylinder is arranged in the cylinder center axis, with a central shaft being connected, in terms of casting technology, to the combustion chamber plate of the cylinder head on the one hand and to transverse walls forming camshaft bearings on the other. This results in a relatively rigid construction with favorable support of the combustion chamber plate against the combustion pressures and more favorable force application
Ventilbetätigungsmittel.Valve actuating means.
Aufgabe der Erfindung ist es, den gattungsgemäßen Zylinderkopf bei fertigungstechnisch günstiger Konstruktion baulich noch kompakter und steifer mit kürzeren Ein- und/oder Auslaßkanälen auszubilden.The object of the invention is to make the generic cylinder head structurally more compact and stiffer with shorter inlet and / or outlet channels with a construction that is favorable in terms of production technology.
Diese Aufgabe wird erfindungsgemäß mit den kennzeichnenden Merkmalen des Patentanspruches 1 gelöst. Vorteilhafte Weiterbildungen der Erfindung sind den weiteren Patentansprüchen entnehmbar.This object is achieved with the characterizing features of claim 1. Advantageous developments of the invention can be found in the further claims.
Erfindungsgemäß wird vorgeschlagen, zumindest eine Seitenwand des Zylinderkopfes, bevorzugt jedoch beide Seitenwände, jeweils zwischen den Schraubenbutzen der Zylindermitte zu nach innen eingezogen auszubilden und die benachbarten Anschlußflächen für den Anschluß des Abgaskrümmers bzw. des Ansaugverteilers mit ihrer an die Seitenwand angrenzenden Flanschkontur zwischen diese Schraubenbutzen eintauchen zu lassen. In Konsequenz dieser Merkmale wird der Zylinderkopf im Bereich der Brennraumplatte mit den eingezogenen Seitenwänden und bis zwischen < die Schraubenbutzen dem Brennraum zu verkürzten Ein- und/oder Auslaßkanälen extrem kompakt mit entsprechend steifer Abstützung der Brennraumplatte und der darüberliegenden Ventilbetätigungsmittel. Durch das Einziehen der Zylinderkopf-Seitenwände bis in den Bereich der Schraubenbutzen entsteht mit Einschrauben und Befestigen der Zylinderkopf-Befestigungsschrauben eine extrem steife Konstruktion in Längsrichtung, unter anderem dadurch, daß die Seitenwände teilweise in der Längsmittelebene der Befestigungsschrauben liegen.According to the invention, it is proposed to design at least one side wall of the cylinder head, but preferably both side walls, drawn in between the screw sockets of the cylinder center inwards and immersing the adjacent connection surfaces for connecting the exhaust manifold or the intake manifold with their flange contour adjacent to the side wall between these screw sockets allow. As a consequence of these features, the cylinder head in the area of the combustion chamber plate with the retracted side walls and between inlet and / or outlet ducts shortened between the screw slugs of the combustion chamber becomes extremely compact with a correspondingly rigid support of the combustion chamber plate and the valve actuating means above it. By retracting the cylinder head side walls into the area of the screw bosses, screwing in and fastening the cylinder head fastening screws results in an extremely rigid construction in the longitudinal direction, inter alia in that the side walls are partly in the longitudinal center plane of the fastening screws.
Die Verkürzung des Auslaßkanales bewirkt dabei geringe Abgastemperaturverluste innerhalb des Zylinderkopfes und einiaßseitig die günstige Anordnung von Einspritzventilen, die unmittelbar bzw. ohne Kanalwandbenetzung Brennstoff in den Einlaßventil-Öffnungsquerschnitt einspritzen können.The shortening of the exhaust duct causes low exhaust gas temperature losses within the cylinder head and on the inlet side the favorable arrangement of injectors which can inject fuel into the intake valve opening cross section directly or without duct wall wetting.
Die geringen Kanallängen und Massenkonzentrierungen bewirken somit eine schnelle Aufheizung auf die Betriebstemperatur der Brennkraftmaschine und geringe Wärmeverluste im Kanalbereich.The short duct lengths and mass concentrations thus result in rapid heating to the operating temperature of the internal combustion engine and low heat losses in the duct area.
Die sich durch die beschriebene Konstruktion ergebende, wellenförmige Flanschkontur der Anschlußflächen kann durch entsprechende numerische Steuerung eines Stirnfräsers fertigungstechnisch problemlos hergestellt werden, wobei der Fräser entsprechend dem Verlauf der Seitenwände jeweils zwischen die Schraubenbutzen eintaucht und somit die planen Anschlußflächen mit entsprechender Flanschkontur erzeugt.The resulting wave-shaped flange contour of the connection surfaces resulting from the described construction can be produced without problems in terms of production technology by appropriate numerical control of an end mill, the router being immersed between the screw slugs in accordance with the course of the side walls and thus producing the flat connection surfaces with a corresponding flange contour.
Ein Ausführungsbeispiel der Erfindung ist im folgenden mit weiteren Einzelheiten näher erläutert. Die schematische Zeichnung zeigt inAn embodiment of the invention is explained in more detail below with further details. The schematic drawing shows in
Fig. 1 einen horizontalen Längsschnitt durch einen Zylinderkopf einer mehr- zylindrigen Vier-Ventil-Hubkolben-Breπnkraftmaschine gemäß Linie l-l der Figur 2;1 shows a horizontal longitudinal section through a cylinder head of a multi-cylinder four-valve reciprocating internal combustion engine according to line I-1 of FIG. 2;
Fig. 2 einen Querschnitt entlang der Linie ll-ll der Figur 1 durch die zwischen zwei Zylindern der Brennkraftmaschine liegenden Schraubenbutzen für die Zylinderkopf-Befestigungsschrauben; und Fig. 3 einen weiteren Querschnitt gemäß Linie lll-lll der Figur 1 durch den2 shows a cross section along the line II-II of FIG. 1 through the screw bosses between the two cylinders of the internal combustion engine for the cylinder head fastening screws; and Fig. 3 shows a further cross section along the line III-III of Figure 1 by the
Zylinderkopf. «Cylinder head. «
Von dem allgemein mit 10 bezeichneten Zylinderkopf für eine Vier-Zylinder- Hubkolben-Brennkraftmaschine mit je Zylinder vier Gaswechselventilen ist in der Figur 1 nur der mittlere Abschnitt dargestellt, der etwa zwei Zylinder des nicht dargestellten Zylinderkurbelgehäuses überdeckt. Soweit nicht beschrieben, ist der Zylinderkopf herkömmlicher Bauart.Of the cylinder head, generally designated 10, for a four-cylinder reciprocating internal combustion engine with four gas exchange valves per cylinder, only the middle section is shown in FIG. 1, which covers approximately two cylinders of the cylinder crankcase, not shown. Unless described, the cylinder head is of a conventional type.
Der im Gießverfahren aus einer Leichtmetall-Legierung hergestellte Zylinderkopf 10 weist eine untere, plane Anschlußfläche 12 zum Anbau auf das Zylinderkurbeigehäuse der Brennkraftmaschine und eine etwa parallel dazu verlaufende Anschlußfläche 14 für einen Lagerdeckel (nicht dargestellt) für die in Querwänden 16 des Zylinderkopfes 10 in Lagerstühlen 18, 20 gelagerten Nockenwellen (nicht dargestellt) der Brennkraftmaschine auf. Die Querwände 16 sind über eine etwa mittig über den Zylindern verlaufende Längswand 15 miteinander verbunden, wobei die Längswand 15 in nicht dargestellter Weise in die endseitigen Stirnwände des Zylinderkopfes 10 einmünden.The cylinder head 10 produced in a casting process from a light metal alloy has a lower, flat connection surface 12 for mounting on the cylinder crankcase of the internal combustion engine and an approximately parallel connection surface 14 for a bearing cover (not shown) for the in transverse walls 16 of the cylinder head 10 in storage chairs 18, 20 mounted camshafts (not shown) of the internal combustion engine. The transverse walls 16 are connected to one another via a longitudinal wall 15 which runs approximately centrally over the cylinders, the longitudinal wall 15 opening into the end walls of the cylinder head 10 in a manner not shown.
In die Längswand 15 ist jeweils etwa zentral über den Zylindern bzw. in deren verlängerten Mittelachsen 22 je ein Zündkerzenschacht 24 eingeformt, der jeweils in den von der Brennraumplatte 28 des Zylinderkopfes 10 überspannten Brennraum 26 (vergl. Fig. 3) einmündet.A spark plug shaft 24 is formed in each case in the longitudinal wall 15 approximately centrally above the cylinders or in their extended central axes 22, each of which opens into the combustion chamber 26 spanned by the combustion chamber plate 28 of the cylinder head 10 (cf. FIG. 3).
Von der Brennraumplatte 28 gehen zwei Einlaßkanäle 30, 32 aus, die in eine plan durchlaufende Anschlußfläche 34 für den Flanschanschluß eines nicht dargestellten Ansaugverteilers münden. In den entsprechenden Kanalwänden 36 der Einlaßkanäle 30, 32 sind Bohrungen 38 für Ventilführungen für den Einbau der Einlaßventile (vergl. eingezeichnete Längsmittelachsen 40) eingebracht. Für die Abstützung der üblichen schraubenförmigen Ventilfedern der Einlaßventile sind ringfömige Abstützflächen 42 an den Enden der Bohrungen 38 vorgesehen.Two inlet ducts 30, 32 extend from the combustion chamber plate 28 and open into a flat connecting surface 34 for the flange connection of an intake manifold, not shown. In the corresponding channel walls 36 of the inlet channels 30, 32, holes 38 are made for valve guides for the installation of the inlet valves (see longitudinal central axes 40 shown). To support the usual helical valve springs of the intake valves, annular support surfaces 42 are provided at the ends of the bores 38.
Desgleichen erstrecken sich zwei Auslaßkanäle 44 von der Brennraumpiatte 28 zu einer durchgehend planen Anschlußfläche 46, an die der Flansch eines nicht dargestellten Abgaskrümmers anschließbar ist. Die Auslaßkanäle 44 (es ist nur ein Auslaßkanal 44 ersichtlich) sind vor ihrer Mündung in die Anschlußfläche 46 zu einem gemeinsamen Auslaßkanal 48 zusammengeführt. Für die Ventiiführungen der in den Längsmittelachsen 50 angeordneten Auslaßventile sind in die Kanalwände 52 Bohrungen 54 eingebracht, die wiederum an Abstützflächen 56 für die schraubenförmigenLikewise, two outlet channels 44 extend from the combustion chamber plate 28 to a continuously flat connection surface 46, to which the flange of an exhaust manifold, not shown, can be connected. The outlet channels 44 (only one outlet channel 44 can be seen) are in front of their opening into the connection surface 46 to a common outlet channel 48 merged. For the valve guides of the outlet valves arranged in the longitudinal central axes 50, bores 54 are made in the channel walls 52, which in turn are provided on support surfaces 56 for the helical ones
Ventilfedern enden.Valve springs end.
Die Auflageflächen 42, 56 der Ventilfedern bzw. die Ventilachsen 40, 50 sind in radialer Anordnung (alle Ventilachsen 40, 50 nach unten innen der Zylindermittelachse 22 zu geneigt) so angeordnet, daß sie zur günstigen Krafteinleitung unmittelbar benachbart zu jeweils einem der Schraubenbutzen 64 und zur benachbarten Seitenwand 68, 70 liegen.The bearing surfaces 42, 56 of the valve springs or the valve axes 40, 50 are arranged in a radial arrangement (all valve axes 40, 50 downward inclined toward the cylinder central axis 22) such that they are immediately adjacent to one of the screw bosses 64 and 64 for the purpose of introducing force to the adjacent side wall 68, 70.
Oberhalb der Brennraumplatte 28 ist ein Freiraum 58 für Kühlflüssigkeit vorgesehen, der von dem darüberliegenden Freiraum 60 für Schmieröl durch eine etwa horizontal verlaufende Deckwand 62 abgetrennt ist.A free space 58 for cooling liquid is provided above the combustion chamber plate 28 and is separated from the free space 60 above for lubricating oil by an approximately horizontally extending top wall 62.
Jeweils zwischen den Zylindern (Mittelachsen 22) und selbstverständlich an den Zylinderkopf-Stirnseiten (nicht dargestellt) sind senkrecht zur Anschlußfläche 12 Schraubenbutzen 64 vorgesehen, in deren Bohrungen 66 nicht dargestellte Zylinderkopf-Befestigungsschrauben einsetzbar sind. Wie die Fig. 2 zeigt, erstrecken sich diese Schraubenbutzen 64 bis etwa zur halben Höhe des Zylinderkopfes 10; von dort schließen sich die teilweise frei nach oben ragenden, den Freiraum 60 seitlich begrenzenden Zylinderkopf-Seitenwände 68, 70 an, die mit den Querwänden 16 und den nicht ersichtlichen Zylinderkopf-Stirnwänden verbunden sind.Between the cylinders (central axes 22) and, of course, on the cylinder head end faces (not shown), 12 screw bosses 64 are provided perpendicular to the connection surface, in whose bores 66 cylinder head fastening screws, not shown, can be used. As FIG. 2 shows, these screw bosses 64 extend to approximately half the height of the cylinder head 10; From there, the cylinder head side walls 68, 70, which partially protrude upward and laterally delimit the free space 60, are connected to the transverse walls 16 and the cylinder head end walls, which cannot be seen.
Die Seitenwände 68, 70 sind mit ihren zwischen den Schraubenbutzen 64 liegenden Abschnitten 68a bzw. 70a von oben nach unten betrachtet zunehmend so der Zylindermitte 22 zu eingezogen, daß deren untere Abschnitte innerhalb der durch die Bohrungsmittelachsen der Schraubenbutzen 64 gebildeten Ebene 72 liegen bzw. zwischen diese Schraubenbutzen 64 eintauchen.The side walls 68, 70 with their sections 68a and 70a lying between the screw sleeves 64, viewed from top to bottom, are increasingly drawn into the cylinder center 22 such that their lower sections lie within or between the plane 72 formed by the axis of the screw sleeve 64 immerse this screw socket 64.
Das gleiche gilt für die Anschlußflächen 34, 46 der Einlaßkanäle 30, 32 bzw. der Auslaßkanäle 48, die ebenfalls innerhalb der Ebenen 72 enden bzw. in die Schraubenbutzen 64 mit deren Randkontur eintauchen (vergl. z.B. gestrichelte Linien 34, 46 der Fig. 2).The same applies to the connection surfaces 34, 46 of the inlet channels 30, 32 or the outlet channels 48, which likewise end within the planes 72 or dip into the screw boss 64 with its edge contour (cf., for example, dashed lines 34, 46 of FIG. 2 ).
Die Winkel α zwischen den V-förmig zueinander angeordneten Seitenwänden 68, 70 zu den Anschlußflächen 34, 46 betragen in der Quermittelebene je Zylinder gesehen (jeweils stärkste Einwölbung derThe angles α between the side walls 68, 70 arranged in a V-shape relative to one another to the connection surfaces 34, 46 are in the Cross median plane seen per cylinder (strongest curvature of the
Seitenwände 68, 70) einlaßseitig ca. 120° und auslaßseitig ca. 145°. « Side walls 68, 70) about 120 ° on the inlet side and about 145 ° on the outlet side. «
Der wellenförmige Verlauf der Seitenwände 68, 70 (vergl. Fig. 1 ) nimmt nach oben zu betrachtet ab bzw. der im unteren Bereich vorliegende Krümmungsradius r geht im Bereich der Anschlußfläche 14 gegen ∞ bzw. in einen gerade verlaufenden Wandabschnitt über.The undulating course of the side walls 68, 70 (see FIG. 1) decreases when viewed upwards, or the radius of curvature r present in the lower region merges in the region of the connecting surface 14 with ∞ or into a straight wall section.
Die sich im Übergangsbereich zwischen Seitenwänden 68, 70 und planen Anschlußflächen 34, 46 ergebenden wellenförmigen Flanschkonturen (Fig. 1 , Linien 74) können beim Fräsen der Anschlußflächen 34, 46 durch entsprechende Steuerung des Stirnfräsers (angedeutet mit 76) in Richtung des Doppelpfeiles 78 zusätzlich zur üblichen Längsvorschubbewegung problemlos hergestellt werden.The wavy flange contours (FIG. 1, lines 74) which result in the transition area between side walls 68, 70 and plan connection surfaces 34, 46 can additionally be milled in the direction of the double arrow 78 by milling the connection surfaces 34, 46 by correspondingly controlling the end mill (indicated by 76) for the usual longitudinal feed movement can be easily produced.
Die beschriebene Zylinderkopfausbildung gibt eine baulich und gewichtsmäßig besonders günstige Konstruktion mit hoher Steifigkeit der Brennraumplatte und hoher Längssteifigkeit. Zudem ergeben sich durch diese Konstruktion besonders kurze Einlaß- und Auslaßkanäle, die einlaßseitig eine besonders brennraumnahe Anordnung der Einspritzventile zur Brennstoffzumessung und auslaßseitig kurze Abgaswege mit den damit verbundenen Vorteilen ergeben. The cylinder head design described gives a construction which is particularly favorable in terms of construction and weight, with high rigidity of the combustion chamber plate and high longitudinal rigidity. In addition, this construction results in particularly short inlet and outlet ducts, which on the inlet side result in an arrangement of the injection valves for fuel metering that is particularly close to the combustion chamber and short exhaust gas paths on the outlet side with the associated advantages.
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99932857A EP1102927B1 (en) | 1998-07-25 | 1999-07-09 | Cylinder head |
| DE59901030T DE59901030D1 (en) | 1998-07-25 | 1999-07-09 | CYLINDER HEAD |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19833531A DE19833531A1 (en) | 1998-07-25 | 1998-07-25 | Cylinder head for stroke piston internal combustion engine involves at least two cylinders in row, each cylinder having at least one inlet and outlet channel evolving from combustion |
| DE19833531.8 | 1998-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2000006880A1 true WO2000006880A1 (en) | 2000-02-10 |
Family
ID=7875303
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1999/004828 Ceased WO2000006880A1 (en) | 1998-07-25 | 1999-07-09 | Cylinder head |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP1102927B1 (en) |
| DE (2) | DE19833531A1 (en) |
| ES (1) | ES2172341T3 (en) |
| WO (1) | WO2000006880A1 (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2342530A1 (en) * | 1972-11-06 | 1974-05-16 | Denzel Kraftfahrzeug Wolfgang | CYLINDER HEAD FOR COMBUSTION MACHINES |
| FR2552820A1 (en) * | 1983-10-04 | 1985-04-05 | Honda Motor Co Ltd | CYLINDER CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE OF THE DOUBLE CAMSHAFT IN THE HEAD |
| DE4100459A1 (en) * | 1990-02-13 | 1991-08-14 | Avl Verbrennungskraft Messtech | Cylinder head for IC engine - has internal passageways for circulation of cooling liquid |
| DE3943729A1 (en) * | 1989-12-11 | 1994-02-17 | Porsche Ag | IC engine with four valves per cylinder - incorporates carrier block in cylinder head accommodating angled tappet guides, camshaft bearings and access tube for sparking plug. |
| DE4315233A1 (en) * | 1993-05-07 | 1994-07-28 | Daimler Benz Ag | Direct injection internal combustion engine |
| EP0735244A1 (en) * | 1995-03-27 | 1996-10-02 | Mazda Motor Corporation | Direct injection type diesel engine |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3843983A1 (en) * | 1988-12-27 | 1990-06-28 | Kloeckner Humboldt Deutz Ag | FOUR-STOCK COMBUSTION ENGINE |
| DE4338186A1 (en) * | 1993-11-09 | 1995-05-11 | Kloeckner Humboldt Deutz Ag | Internal-combustion piston engine |
-
1998
- 1998-07-25 DE DE19833531A patent/DE19833531A1/en not_active Withdrawn
-
1999
- 1999-07-09 DE DE59901030T patent/DE59901030D1/en not_active Expired - Lifetime
- 1999-07-09 EP EP99932857A patent/EP1102927B1/en not_active Expired - Lifetime
- 1999-07-09 ES ES99932857T patent/ES2172341T3/en not_active Expired - Lifetime
- 1999-07-09 WO PCT/EP1999/004828 patent/WO2000006880A1/en not_active Ceased
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2342530A1 (en) * | 1972-11-06 | 1974-05-16 | Denzel Kraftfahrzeug Wolfgang | CYLINDER HEAD FOR COMBUSTION MACHINES |
| FR2552820A1 (en) * | 1983-10-04 | 1985-04-05 | Honda Motor Co Ltd | CYLINDER CYLINDER HEAD FOR INTERNAL COMBUSTION ENGINE OF THE DOUBLE CAMSHAFT IN THE HEAD |
| DE3943729A1 (en) * | 1989-12-11 | 1994-02-17 | Porsche Ag | IC engine with four valves per cylinder - incorporates carrier block in cylinder head accommodating angled tappet guides, camshaft bearings and access tube for sparking plug. |
| DE4100459A1 (en) * | 1990-02-13 | 1991-08-14 | Avl Verbrennungskraft Messtech | Cylinder head for IC engine - has internal passageways for circulation of cooling liquid |
| DE4315233A1 (en) * | 1993-05-07 | 1994-07-28 | Daimler Benz Ag | Direct injection internal combustion engine |
| EP0735244A1 (en) * | 1995-03-27 | 1996-10-02 | Mazda Motor Corporation | Direct injection type diesel engine |
Also Published As
| Publication number | Publication date |
|---|---|
| ES2172341T3 (en) | 2002-09-16 |
| EP1102927B1 (en) | 2002-03-20 |
| EP1102927A1 (en) | 2001-05-30 |
| DE59901030D1 (en) | 2002-04-25 |
| DE19833531A1 (en) | 2000-01-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69422987T2 (en) | CYLINDER HEAD ASSEMBLY | |
| DE3102905A1 (en) | WATER-COOLED INTERNAL COMBUSTION ENGINE | |
| DE2839199C2 (en) | Cylinder head for water-cooled internal combustion engines that can be manufactured using the die-casting process | |
| DE19510053C2 (en) | Multi-cylinder reciprocating internal combustion engine | |
| DE69017614T2 (en) | Cylinder head and valve arrangement for multi-valve internal combustion engine. | |
| DE3000129A1 (en) | CYLINDER HEAD FOR COMPRESSION-IGNITIONED INTERNAL COMBUSTION ENGINES OF THE DESIGN WHICH ARE ASSIGNED TO THE ENGINE CYLINDERS PRE-COMBUSTION CHAMBERS | |
| EP0088157A1 (en) | Cylinder head for a water-cooled internal-combustion engine | |
| EP0688946B1 (en) | Cylinder head layout of an internal combustion engine | |
| DE10222078B4 (en) | Multi-cylinder engine | |
| DE3050893C2 (en) | ||
| DE3601274C2 (en) | ||
| DE69924432T2 (en) | Internal combustion engine | |
| DE112020000833T5 (en) | VALVE SEAT RING FOR CYLINDER HEAD WITH VENTURI FLOW ROLLS AND SEATING SURFACE PROFILED TO LIMIT VALVE RETRACTION | |
| DE69519326T2 (en) | Internal combustion engine | |
| DE19723342C1 (en) | Cylinder head with casting core for oilduct fabrication in multi-cylinder IC engine | |
| DE60127478T2 (en) | Cylinder head for an internal combustion engine | |
| DE19735183A1 (en) | Four-valve cylinder head of an internal combustion engine | |
| DE2943560C2 (en) | Device for an internal combustion engine | |
| DE4119594C2 (en) | Liquid-cooled light alloy cylinder head | |
| WO2000006880A1 (en) | Cylinder head | |
| EP0584564A1 (en) | Diesel internal combustion engine | |
| DE1301656B (en) | Cylinder head for internal combustion engines | |
| DE3932293C1 (en) | ||
| WO2001077512A1 (en) | Internal combustion engine comprising cylinders arranged in a narrow v | |
| DE3724495A1 (en) | Valve-timed four-stroke reciprocating piston internal combustion engine with applied ignition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): CN HU JP US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
| DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 1999932857 Country of ref document: EP |
|
| WWP | Wipo information: published in national office |
Ref document number: 1999932857 Country of ref document: EP |
|
| WWG | Wipo information: grant in national office |
Ref document number: 1999932857 Country of ref document: EP |