DE4112496C1 - Liq. cooled IC engine in-line cylinder head - has ideal line, inter-setting inlet valve centre axes at valve seats, is at specified angle to long cylinder head axis - Google Patents

Liq. cooled IC engine in-line cylinder head - has ideal line, inter-setting inlet valve centre axes at valve seats, is at specified angle to long cylinder head axis

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Publication number
DE4112496C1
DE4112496C1 DE19914112496 DE4112496A DE4112496C1 DE 4112496 C1 DE4112496 C1 DE 4112496C1 DE 19914112496 DE19914112496 DE 19914112496 DE 4112496 A DE4112496 A DE 4112496A DE 4112496 C1 DE4112496 C1 DE 4112496C1
Authority
DE
Germany
Prior art keywords
cylinder head
valve
longitudinal axis
inlet
line
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
Application number
DE19914112496
Other languages
German (de)
Inventor
Georg Dipl.-Ing. 7012 Fellbach De Eiermann
Janusz Dipl.-Ing. 7000 Stuttgart De Kwiatkowski
Uwe Dipl.-Ing. 7301 Deizisau De Kreckel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mercedes Benz Group AG
Original Assignee
Mercedes Benz AG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mercedes Benz AG filed Critical Mercedes Benz AG
Priority to DE19914112496 priority Critical patent/DE4112496C1/en
Application granted granted Critical
Publication of DE4112496C1 publication Critical patent/DE4112496C1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • 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
    • F02F1/4221—Shape or arrangement of intake or exhaust channels in cylinder heads specially adapted for four or more valves per cylinder particularly for three or more inlet valves
    • 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
    • F02B1/00—Engines characterised by fuel-air mixture compression
    • F02B1/02—Engines characterised by fuel-air mixture compression with positive ignition
    • F02B1/04—Engines characterised by fuel-air mixture compression with positive ignition with fuel-air mixture admission into 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
    • F02B2275/20—SOHC [Single 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
    • 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
    • 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
    • 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
    • F02F2001/247—Arrangement of valve stems in cylinder heads the valve stems being orientated in parallel with the cylinder axis

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

Two adjacent inlet valves and an opposite outlet valve in the cylinder head have valve seats (4, 6) in the combustion chamber (8). Inlet and outlet ducts (5, 7) connect to the valve seats and extend at right angles to the longitudinal axis (9) of the cylinder head, while the inlet valve seats (4) are positioned around the central cylinder head longitudinal axis. An ideal line (11), intersecting the central longitudinal axes (10) of the inlet valves at valve seat level forms an angle (alpha) of between 40 and 50 deg. with the cylinder head longitudinal axis, and spark plug shafts (13) are formed in the areas outside the ideal triangle (14) formed by the longitudinal axes of the valve centres (10, 18) at valve seat level. Coolant ducts in the cylinder head are orthogonal to the cylinder head longitudinal axis. ADVANTAGE - Efficient cooling, esp. of outlet valve seat.

Description

Die Erfindung betrifft einen Reihenzylinderkopf einer flüssig­ keitsgekühlten Brennkraftmaschine gemäß den im Oberbegriff des 1. Patentanspruches genannten Merkmalen.The invention relates to an in-line cylinder head of a liquid speed-cooled internal combustion engine according to the in the preamble of 1. Features mentioned claim.

Ein Zylinderkopf mit einer derartigen Ventilanordnung ist aus der DE 29 49 529 A1 bekannt. Bei dieser bekannten Anordnung mit drei Ventilen pro Zylinder sind die Ventilsitze der Einlaßven­ tile um eine Zylindermittellängsachse angeordnet, wobei eine die Mittelachse der Einlaßventile verbindende Linie in einem Winkel zu einer Zylinderkopflängsachse angeordnet ist. Dieser Schrift sind jedoch keinerlei Hinweise für eine optimale Anord­ nung der Ventile bzw. für die Anordnung von Zündkerzen in bezug auf die Kühlung des Zylinderkopfes zu entnehmen.A cylinder head with such a valve arrangement is out known from DE 29 49 529 A1. In this known arrangement with three valves per cylinder are the valve seats of the intake valves Tile arranged around a cylinder central longitudinal axis, one line connecting the central axis of the inlet valves in one Angle to a cylinder head longitudinal axis is arranged. This Scripture, however, are not indications of an optimal arrangement tion of the valves or for the arrangement of spark plugs in relation on the cooling of the cylinder head.

Es ist die Aufgabe der Erfindung, einen Reihenzylinderkopf einer flüssigkeitsgekühlten Brennkraftmaschine mit zwei Einlaß­ ventilen und einem Auslaßventil sowie mindestens einer Zünd­ kerze pro Zylinder so zu gestalten, daß eine wirkungsvolle Kühlung des Zylinderkopfes, insbesondere des thermisch kritischen Auslaßventilsitzes ermöglicht wird.It is the object of the invention to provide an in-line cylinder head a liquid-cooled internal combustion engine with two inlet valves and an outlet valve and at least one ignition to design candle per cylinder so that an effective Cooling of the cylinder head, especially thermal critical exhaust valve seat is enabled.

Erfindungsgemäß wird die Aufgabe durch die Merkmale des kenn­ zeichnenden Teiles des 1. Patentanspruches gelöst, wobei die Merkmale der Unteransprüche vorteilhafte Aus- und Weiterbil­ dungen kennzeichnen.According to the invention the task is characterized by the features of Drawing part of the 1st claim solved, the  Features of the subclaims advantageous training and further education label endings.

Durch die erfindungsgemäße Anordnung der Ventile und Zündker­ zenschächte steht für die Einbringung von im wesentlichen quer zur Zylinderkopflängsachse verlaufenden Kühlflüssigkeitskanälen genügend Raum zur Verfügung, wobei auch eine ausreichende Um­ spülung des Auslaßventiles gesichert werden kann.Due to the arrangement of the valves and spark plugs according to the invention zschächte stands for the introduction of essentially transverse coolant channels running to the cylinder head longitudinal axis enough space available, with sufficient order flushing of the exhaust valve can be secured.

Die erfindungsgemäße Anordnung der Ventile ermöglicht ihre Be­ tätigung durch eine gemeinsame, parallel zur Zylinderkopflängs­ achse angeordnete Nockenwelle direkt oder über entsprechende Übertragungsglieder und sieht für jedes Einlaßventil entweder einen gesonderten oder für beide Einlaßventile einen gemeinsa­ men Einlaßkanal vor.The arrangement of the valves according to the invention enables their loading operation by a common, parallel to the cylinder head axially arranged camshaft directly or via corresponding Transmission links and sees for each intake valve either a separate or a common for both intake valves men inlet channel.

Die Erfindung wird nachfolgend anhand von schematischen Durch­ dringungszeichnungen näher erläutert.The invention is based on schematic through urgent drawings explained.

Es zeigen:Show it:

Fig. 1 einen erfindungsgemäßen Zylinderkopf quer zur Zylinder­ kopflängsachse, Fig. 1 shows a cylinder head according to the invention transverse to the head longitudinal axis cylinder,

Fig. 2 einen erfindungsgemäßen Zylinderkopf in der Draufsicht, Fig. 2 shows a cylinder head according to the invention in plan view,

Fig. 3 einen erfindungsgemäßen Ventiltrieb in der Ansicht von Fig. 1. Fig. 3 shows a valve gear according to the invention in the view of Fig. 1,.

Ein erfindungsgemäßer Zylinderkopf 1, der mittels durch die Schraubenpfeifen 2 geführter, nicht dargestellter Schrauben mit dem durch die Zylinderlaufbuchse 3 angedeuteten Motorblock ver­ schraubt ist, weist pro Zylinder zwei Einlaßventilsitze 4 mit je einem Einlaßkanal 5 sowie einem Auslaßventilsitz 6 mit einem Auslaßkanal 7 auf, wobei die an die Ventilsitze 4, 6 anschlie­ ßenden Ein- und Auslaßkanäle 5,7 im wesentlichen quer zu einer Zylinderkopflängsachse 9 verlaufen.An inventive cylinder head 1 , which is screwed by means of the screw whistles 2 , not shown screws with the engine block indicated by the cylinder liner 3 , has two intake valve seats 4 , each with an intake port 5 and an exhaust valve seat 6 with an exhaust port 7 , whereby the inlet and exhaust ports 5, 7 connecting to the valve seats 4 , 6 run essentially transversely to a cylinder axis 9 .

Eine Ausführung mit nur einem zusammengeführten Einlaßkanal für beide Einlaßventilsitze 4 ist gleichermaßen möglich.An embodiment with only one merged inlet channel for both inlet valve seats 4 is equally possible.

Die Einlaßventilsitze 4 sind nebeneinander, dem Auslaßventil­ sitz 6 gegenüber im Brennraum 8 angeordnet, wobei mindestens die Einlaßventile im gleichen Drehsinn um eine Zylindermittel­ längsachse 12 derartig verdreht angeordnet sind, daß eine die Ventillängsachsen 10 der Einlaßventile in Höhe der Ventilsitze 4 schneidende gedachte Gerade 11 mit der Zylinderkopfmittel­ längsachse 9 einen Winkel α von 40° bis 50° bildet. Weiterhin können für eine Doppelzündung erfindungsgemäß zwei Zündkerzen­ schächte 13 in den Freiräumen außerhalb eines durch die Anord­ nung der Ventilsitze 4, 6 gebildeten Dreieckes 14 zwischen je­ weils einem Einlaßventilsitz 4 und dem Auslaßventilsitz 6 ein­ gebracht sein.The inlet valve seats 4 are arranged side by side, the outlet valve seat 6 opposite in the combustion chamber 8 , at least the inlet valves being rotated in the same direction about a cylinder central longitudinal axis 12 such that an imaginary straight line 11 intersecting the valve longitudinal axes 10 of the inlet valves at the level of the valve seats 4 the cylinder head middle axis 9 forms an angle α of 40 ° to 50 °. Furthermore, according to the invention, two spark plugs shafts 13 for a double ignition in the free spaces outside a triangle 14 formed by the arrangement of the valve seats 4 , 6 between an inlet valve seat 4 and the outlet valve seat 6 .

Wie aus den Darstellungen ersichtlich, wird durch die erfin­ dungsgemäße Anordnung der Einlaßventilsitze 4 und -kanäle 5, unabhängig davon, ob es sich um geteilte Einlaßkanäle 5 oder um einen zusammengeführten Kanal für beide Einlaßventile handelt, genügend Raum für die Einbringung entsprechender Kühlflüssig­ keitskanäle im wesentlichen quer zur Zylinderkopflängsachse 9 geschaffen. Die wesentlichen Strömungswege sind durch Pfeile in den Darstellungen gekennzeichnet. Es kann mit dieser Anordnung gesichert werden, daß im besonderen der thermisch kritische Auslaßventilsitz 6 in der Sitzzone annähernd allseitig umströmt wird. Die Zündkerzenschächte 13, die besonders bei Doppelzün­ dung und herkömmlicher Ventilanordnung für eine Querstromküh­ lung hinderlich wirken, hemmen in der erfinderischen Anordnung die Einbringung der im wesentlichen quer zur Zylinderkopflängs­ achse 9 verlaufenden Kühlflüssigkeitskanäle ebenfalls kaum.As can be seen from the illustrations, by the inventive arrangement of the inlet valve seats 4 and 5 channels, regardless of whether it is split inlet channels 5 or a merged channel for both intake valves, enough space for the introduction of appropriate cooling liquid speed channels essentially created transversely to the cylinder head longitudinal axis 9 . The main flow paths are indicated by arrows in the illustrations. With this arrangement it can be ensured that, in particular, the thermally critical outlet valve seat 6 is flowed around on all sides in the seat zone. The spark plug shafts 13 , which are a hindrance especially in the case of double ignition and conventional valve arrangement for cross-flow cooling, inhibit the introduction of the coolant passages which run essentially transversely to the cylinder head longitudinal axis 9 in the inventive arrangement, too.

Die erfindungsgemäße Anordnung ermöglicht weiterhin vorteilhaft die Betätigung der Ein- und Auslaßventile mit nur einer pa­ rallel zur Zylinderkopflängsachse 9 liegenden Nockenwelle 15. Dabei können die Ventile direkt über Tassenstößel 16 oder Kipp­ hebel 17 bzw. andere Zwischenglieder betätigt werden. Ent­ sprechend der Form des Brennraumes 8 und der Gestaltung des Zylinderkopfes 1 können die Ventilmittellängsachsen 10 der Ein­ laßventile sowie die Ventilmittellängsachse 18 des Auslaßventi­ les und die Zündkerzenschächte 13 parallel zur Zylindermittel­ längsachse 12 oder wie im vorliegenden Ausführungsbeispiel da­ von abweichend mit gleichen oder unterschiedlichen Winkeln an­ geordnet sein.The arrangement according to the invention also advantageously enables the actuation of the intake and exhaust valves with only one camshaft 15 lying parallel to the longitudinal axis 9 of the cylinder head. The valves can be operated directly via tappet 16 or rocker arm 17 or other intermediate links. Accordingly, the shape of the combustion chamber 8 and the design of the cylinder head 1 , the valve central longitudinal axes 10 of a lassventile and the valve central longitudinal axis 18 of the Auslaßventi les and the spark plug shafts 13 parallel to the cylinder center longitudinal axis 12 or as in the present embodiment as different from the same or different angles be ordered.

Claims (5)

1. Reihenzylinderkopf einer flüssigkeitsgekühlten Brennkraft­ maschine mit zwei nebeneinanderliegenden Einlaßventilen und einem den Einlaßventilen gegenüberliegenden Auslaßventil und mindestens einer Zündkerze pro Zylinder, wobei die Einlaßven­ tile und das Auslaßventil zur Steuerung jeweils einer Ventil­ öffnung einen Ventilsitz im Zylinderkopfbrennraum aufweisen und wobei von den Ventilsitzen der Einlaßventile mindestens ein Einlaßkanal und von dem Ventilsitz des Auslaßventiles ein Aus­ laßkanal in Querrichtung zu einer Zylinderkopflängsachse abge­ führt ist, und wobei die Ventilsitze der Einlaßventile um die Zylindermittellängsachse angeordnet sind, dadurch gekennzeichnet, daß eine die Ventilmittellängsachsen (10) der Einlaßventile in Höhe der Ventilsitze (4) schneidende gedachte Gerade (11) mit der Zylinderkopflängsachse (9) einen Winkel (α) von 40° bis 50° bildet und in den Freiräumen außerhalb des durch die Anordnung der Ventilmittellängsachsen (10, 18) der Ventile in Höhe der Ventilsitze (4, 6) gebildeten gedachten Dreieckes (14) zwischen den Einlaßventilsitzen (4) und dem Auslaßventilsitz (6) jeweils Platz für einen Zündkerzenschacht (13) gebildet ist, und daß die Kühlflüssigkeitskanäle im Zylinderkopf (1) im wesentlichen quer zur Zylinderkopflängsachse (9) verlaufen. 1. In-line cylinder head of a liquid-cooled internal combustion engine with two side-by-side inlet valves and an outlet valve opposite the inlet valve and at least one spark plug per cylinder, the inlet valves and the outlet valve for controlling one valve opening each having a valve seat in the cylinder head combustion chamber and at least one of the valve seats of the inlet valves an inlet duct and from the valve seat of the outlet valve an outlet duct leading in the transverse direction to a cylinder head longitudinal axis, and wherein the valve seats of the inlet valves are arranged around the cylinder central longitudinal axis, characterized in that one of the valve central longitudinal axes ( 10 ) of the inlet valves is at the level of the valve seats ( 4 ) intersecting imaginary straight line ( 11 ) with the cylinder head longitudinal axis ( 9 ) forms an angle (α) of 40 ° to 50 ° and in the free spaces outside the through the arrangement of the valve center longitudinal axes ( 1 0 , 18 ) of the valves at the level of the valve seats ( 4 , 6 ) formed imaginary triangle ( 14 ) between the inlet valve seats ( 4 ) and the exhaust valve seat ( 6 ), space for a spark plug shaft ( 13 ) is formed, and that the coolant channels in the cylinder head ( 1 ) run essentially transversely to the cylinder head longitudinal axis ( 9 ). 2. Reihenzylinderkopf nach Anspruch 1, dadurch gekennzeichnet, daß von jedem Einlaßventilsitz (4) ein gesonderter Einlaßkanal (5) abgeführt ist.2. In-line cylinder head according to claim 1, characterized in that a separate inlet channel ( 5 ) is discharged from each inlet valve seat ( 4 ). 3. Reihenzylinderkopf nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß die Einlaßventile und das Auslaßventil durch eine parallel zur Zylinderkopflängsachse (9) angeordneten Nockenwelle (15) betätigbar sind.3. In-line cylinder head according to claim 1 or 2, characterized in that the inlet valves and the exhaust valve can be actuated by a camshaft ( 15 ) arranged parallel to the cylinder head longitudinal axis ( 9 ). 4. Reihenzylinderkopf nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Ventilmittellängsachsen (10, 18) und/oder die Zündker­ zenschächte (13) zu der Zylindermittellängsachse (12) einen von Null verschiedenen Winkel bilden.4. In-line cylinder head according to one of claims 1 to 3, characterized in that the valve central longitudinal axes ( 10 , 18 ) and / or the spark plug shafts ( 13 ) to the cylinder central longitudinal axis ( 12 ) form a non-zero angle. 5. Reihenzylinderkopf nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, daß die Zündkerzenschächte (13) parallel zur Zylindermittel­ längsachse (12) angeordnet sind.5. In-line cylinder head according to one of claims 1 to 4, characterized in that the spark plug shafts ( 13 ) are arranged parallel to the cylinder center longitudinal axis ( 12 ).
DE19914112496 1991-04-17 1991-04-17 Liq. cooled IC engine in-line cylinder head - has ideal line, inter-setting inlet valve centre axes at valve seats, is at specified angle to long cylinder head axis Expired - Lifetime DE4112496C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19914112496 DE4112496C1 (en) 1991-04-17 1991-04-17 Liq. cooled IC engine in-line cylinder head - has ideal line, inter-setting inlet valve centre axes at valve seats, is at specified angle to long cylinder head axis

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19914112496 DE4112496C1 (en) 1991-04-17 1991-04-17 Liq. cooled IC engine in-line cylinder head - has ideal line, inter-setting inlet valve centre axes at valve seats, is at specified angle to long cylinder head axis

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DE4112496C1 true DE4112496C1 (en) 1992-08-27

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19923902A1 (en) * 1999-05-25 2000-11-30 Heinz Leiber Internal combustion engine
DE10043773A1 (en) * 2000-09-06 2002-03-14 Audi Ag Cylinder head for multicylinder direct injecting Otto engine has three holders for ignition devices and fuel injection units, for double ignition o double fuel injection
EP1388662A1 (en) * 2001-05-17 2004-02-11 Honda Giken Kogyo Kabushiki Kaisha Sohc type engine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949529A1 (en) * 1979-12-08 1981-06-11 Volkswagenwerk Ag, 3180 Wolfsburg IC engine with two inlet valves - has one with fixed and one with variable timing for load control
GB2115068A (en) * 1982-01-25 1983-09-01 Toyota Motor Co Ltd Intake and exhaust valve gear in an internal combustion engine
JPS61185603A (en) * 1985-02-13 1986-08-19 Daihatsu Motor Co Ltd Valve driving device in internal-combustion engine
EP0271475A1 (en) * 1986-11-21 1988-06-15 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List Internal-combustion engine having two adjacent inlet valves and one opposite exhaust valve per cylinder

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2949529A1 (en) * 1979-12-08 1981-06-11 Volkswagenwerk Ag, 3180 Wolfsburg IC engine with two inlet valves - has one with fixed and one with variable timing for load control
GB2115068A (en) * 1982-01-25 1983-09-01 Toyota Motor Co Ltd Intake and exhaust valve gear in an internal combustion engine
JPS61185603A (en) * 1985-02-13 1986-08-19 Daihatsu Motor Co Ltd Valve driving device in internal-combustion engine
EP0271475A1 (en) * 1986-11-21 1988-06-15 AVL Gesellschaft für Verbrennungskraftmaschinen und Messtechnik mbH.Prof.Dr.Dr.h.c. Hans List Internal-combustion engine having two adjacent inlet valves and one opposite exhaust valve per cylinder

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19923902A1 (en) * 1999-05-25 2000-11-30 Heinz Leiber Internal combustion engine
DE10043773A1 (en) * 2000-09-06 2002-03-14 Audi Ag Cylinder head for multicylinder direct injecting Otto engine has three holders for ignition devices and fuel injection units, for double ignition o double fuel injection
EP1388662A1 (en) * 2001-05-17 2004-02-11 Honda Giken Kogyo Kabushiki Kaisha Sohc type engine
EP1388662B1 (en) * 2001-05-17 2011-09-14 Honda Giken Kogyo Kabushiki Kaisha Sohc type engine

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Owner name: DAIMLER-BENZ AKTIENGESELLSCHAFT, 70567 STUTTGART,

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