WO1998036159A1 - Soupape de gaz a deux voies, et methode de mesure de la pression dans la chambre de combustion d'un moteur a combustion interne - Google Patents

Soupape de gaz a deux voies, et methode de mesure de la pression dans la chambre de combustion d'un moteur a combustion interne Download PDF

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Publication number
WO1998036159A1
WO1998036159A1 PCT/EP1998/000830 EP9800830W WO9836159A1 WO 1998036159 A1 WO1998036159 A1 WO 1998036159A1 EP 9800830 W EP9800830 W EP 9800830W WO 9836159 A1 WO9836159 A1 WO 9836159A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
gas exchange
exchange valve
valve
valve according
Prior art date
Application number
PCT/EP1998/000830
Other languages
German (de)
English (en)
Inventor
Heinz Leiber
Original Assignee
Lsp Innovative Automotive Systems Gmbh
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 Lsp Innovative Automotive Systems Gmbh filed Critical Lsp Innovative Automotive Systems Gmbh
Priority to EP98910663A priority Critical patent/EP0963509B1/fr
Priority to JP53536198A priority patent/JP2002511120A/ja
Priority to DE59800762T priority patent/DE59800762D1/de
Publication of WO1998036159A1 publication Critical patent/WO1998036159A1/fr

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D35/00—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for
    • F02D35/02—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions
    • F02D35/023—Controlling engines, dependent on conditions exterior or interior to engines, not otherwise provided for on interior conditions by determining the cylinder pressure
    • 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
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • 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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/02—Selecting particular materials for valve-members or valve-seats; Valve-members or valve-seats composed of two or more materials
    • 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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group

Definitions

  • the invention relates to a gas exchange valve with a valve disk, the end face of which, in the installed state of the gas exchange valve, faces a combustion chamber of an internal combustion engine
  • the invention also relates to a method for measuring the pressure in a combustion chamber of an internal combustion engine
  • a cylinder of a four-stroke engine has at least one intake valve and at least one exhaust valve
  • Gas exchange valves essentially consist of a front, conical valve disc, as well as an elongated valve stem attached to the rear of the valve valve springs are usually arranged at the free end of the valve stem, as well as an actuating device that axially displaces the valve stem in time with the gas exchange, while the return movement of the valve by means of Valve spring is effected
  • valve disc is in the closed position of the valve with its outer edge, the so-called valve seat, on a counter surface of the cylinder head, which forms the outlet or inlet for the respective cylinder typically at about 45 ° cone angle and ground for the purpose of a good sealing effect
  • valve disk In the case of the outlet valves, the valve disk must therefore be made from a high-temperature-resistant steel which is both corrosion and scale resistant, for example a chrome-manganese steel.
  • a chrome-manganese steel has poor sliding properties, so that special bushes or special sections of the valve stem are in the area of the valve stem Valve stem must be provided, which consist for example of a chromium-silicon steel and have such good sliding properties as well as sufficient thermal conductivity
  • valve stem hollow and to fill it partially, for example to about 60%, with sodium.
  • the sodium is at the operating temperature of the gas switch valves in liquid state of aggregation and is thrown around during the working cycle of the gas exchange valves in the cavity of the valve stem, so that an improved heat dissipation can be ensured
  • Studies on the heat balance of gas exchange valves have shown that, for exhaust valves, around 70% of the heat coming from the combustion chamber is absorbed by the end of the valve plate facing the combustion chamber, while around 30% of the heat is transferred from the outflowing fuel gases to the back of the valve plate and the valve stem From the exhaust valves, this heat is in turn emitted 76% via the valve seats on the cylinder head and 24% via the valve stem on its guide bushings, and thus also the cylinder head
  • a gas exchange valve in which the conical rear side of the valve plate is provided with a discharge funnel which is to serve as a heat shield.
  • the known gas exchange valve is also provided with an additional heat shield in one exemplary embodiment, which is located on the front of the combustion chamber facing end face of the valve plate is arranged between this heat shield on the opposite side and the front face of the valve plate there should be a cavity
  • Both the discharge funnel and the end-side heat shield are made of sheet metal about 0.5 mm thick, and the core of the valve plate and the valve stem are made of metal
  • a similar gas exchange valve with an end-side heat shield is known from DE-A-32 47 487.
  • a cavity is provided between the plate-shaped heat shield located in front of the end of the valve plate and the valve plate, which if necessary is filled with a high-temperature-resistant material, for example asbestos
  • the heat shield is made of metal
  • a similar ceramic-metal composite valve is also known from DE-A-39 26 431, where a steel tie rod is guided as an inner element through the valve stem and up to the front in the valve plate and on its face, while the outer area of the valve plate and the Valve stem is formed by a ceramic material.
  • DE-A-32 36 354 describes a further composite valve which, although consisting largely of metal, is provided on the end face of the valve plate with an oxide ceramic plate as a heat shield.
  • this known composite valve it is known to install the ceramic heat shield in this way that thermally caused expansion of the heat shield can be compensated for by an appropriate type of installation and no damage to the heat shield can occur
  • the invention should make it possible to provide a high-temperature-resistant and light gas exchange valve which is durable and which, due to its lower weight compared to conventional gas exchange valves, also enables savings in gasoline consumption. Furthermore, an improvement in the method for measuring the pressure is also intended In the combustion chamber of an internal combustion engine, an even better control of the combustion process will be possible. As is known, a better diagnosis of the combustion process is also possible
  • the object is achieved according to the invention in that the gas exchange valve has means for detecting the pressure in the closed state of the gas exchange valve.
  • the means can be the valve plate or part of the valve plate Underlying the sensor, additional openings in the combustion chamber and additional components are not required
  • the object is further achieved according to the invention in that an elastic deformation of a gas exchange valve connected to the combustion chamber is measured in its closed state
  • the gas exchange valve can be used to detect the pressure in the combustion chamber of the internal combustion engine so that the combustion process can be controlled with it.
  • no modification to the engine block or to the cylinder head is therefore necessary to become because the slightly modified gas exchange valves themselves provide the possibility to carry out a pressure measurement.
  • the actual function of the gas exchange valves themselves does not change, unlike for example with spark plugs, in which attempts have also already been made to integrate pressure sensors into them measure during the compression phase and the combustion phase if you take the crankshaft angle into account during the measurement
  • gas exchange valves according to the invention with an elastically deformable plate or plate part on the end face are preferably further developed in that the plate part is at least partially designed as a membrane
  • This measure has the advantage that the measuring path via the valve stem, that is to say an already existing component, is transferred to a location at a distance from the combustion chamber at which measuring arrangements which are not so thermally sensitive can be provided
  • an end of the valve stem facing away from the plate part can be connected to the displacement sensor.
  • the plate part on its side facing the combustion chamber in the installed state, is provided with a heat shield, as is known per se.
  • the heat shield preferably consists of a high-temperature-resistant, in particular ceramic material. It is preferably designed as a plate
  • the plate is positively attached at the edge of the plate part, preferably by bordering, preferably the bordering is carried out at high temperatures (approx. 500 ° C.)
  • This measure has the advantage that the arrangement can be produced in large series in a simple manner. Bordering at, for example, 500 ° C. has the advantage that a slack due to the different expansion coefficients and thus expansion at the operating temperature is avoided.
  • the plate can also be fastened to the center of the plate part
  • This measure has the advantage that the plate can deform more easily, especially under the influence of changing temperatures
  • the plate can preferably be fastened to the plate part by means of a bolt.
  • the boizen is in particular welded to the plate part
  • the bolt is in turn covered on the end face by means of a further heat shield, which in turn is preferably designed as a ceramic plate and by means of a flange part welded to the bolt can be held in front of the bolt
  • the heat shield is held at a distance from the plate part. It can be held firmly or with axial play. In the latter case, it is expedient if the first heat shield is resiliently supported relative to the plate part
  • the heat shield in particular in its embodiment as a ceramic plate, can expand or contract when the temperature changes without causing high mechanical stresses
  • This discharge funnel which is arranged on the back of the valve plate, can also be designed as a ceramic component and in this way achieves a significantly higher thermal load capacity. This applies in particular in the case of an exhaust valve in which the hot burned combustion gases flow along the rear of the valve and represent a considerable thermal load there Compared to the metallic discharge funnels known in the prior art, there is the considerable advantage that, with a smaller thickness and therefore with a lower mass, at least as good if not better thermal insulation can be achieved, so that the mass of the valve is reduced
  • the ceramic discharge funnel can be designed in such a way that a cavity remains between the discharge funnel, the valve stem and the plate part. This measure has the advantage that considerable weight savings (moving mass) are possible at this point
  • the ceramic discharge funnel encloses a further inner discharge funnel, which is preferably enclosed at a distance by the ceramic discharge funnel.
  • the inner discharge funnel preferably consists of metal, in particular aluminum
  • This measure has the advantage that the heat shield function is further improved by good heat dissipation in the valve stem, in that the back of the valve plate and the valve stem are protected by a double arrangement of discharge funnels. If the inner discharge funnel is made of aluminum, this does not make any noticeable Weight increase because the aluminum is primarily thermally protected by the outer ceramic discharge funnel, it also has a long-term effect.
  • the interior of the discharge funnel and the valve stem can be filled with a heat-conducting powder, e.g. magnesium oxide
  • the pressure will be measured in new valves and the displacement sensor will be calibrated.
  • the pressures other new valves are preferably included, for example a new average is formed
  • FIG. 1 shows a side view, partly in section, of a first exemplary embodiment of a gas exchange valve according to the invention, in the installed state
  • Fig. 2 is an illustration on an enlarged scale, similar to Fig. 1, but one
  • FIG. 3 shows a detail from FIG. 2 on an even larger scale
  • FIG. 4 shows a variant of FIG. 3
  • FIG. 5 in partial representation, similar to Fig. 1 and 2, another
  • 10 designates a gas exchange valve as it is used, for example, in a four-cylinder gasoline engine.
  • the gas exchange valve 10 is essentially located in a cylinder head 11, in which a gas duct 12 bent at the side is arranged of an exhaust valve as indicated by an arrow 13. In the case of an intake valve, the direction of flow of the fresh gases is reversed.
  • the gas exchange valve 10 is aligned in the direction of its longitudinal axis 14 with a combustion chamber 15 of the internal combustion engine.
  • the gas exchange valve comprises at its front end 10 a valve plate 16 and at its rear end a valve stem 17.
  • the valve stem 17 is guided via a guide bushing 18 in the cylinder head 11.
  • a spring plate 21 is attached to an upper end 20 of the valve stem 17.
  • the spring divider 21 supports a helical spring 22, which is supported at its other end on a surface 23 of the cylinder head 11. In this way, the gas exchange valve 10 is biased upwards in the illustration of FIG.
  • the gas exchange valve 10 is displaced downward along the axis 14 against the force of the spring 22 by means of the actuating device 24, as shown in dashed lines in FIG. 1 below.
  • the valve lift (not to scale) is denoted by h. From this open position of the gas exchange valve 10, this returns under the restoring force of the spring 22 to its upper, closed position shown in FIG. In this closed position, a conical seat surface 28 rests on the rear circumference of the valve plate 16 on a correspondingly shaped counter surface 29 of the cylinder head 11.
  • the gas channel 12 is in turn closed off from the combustion chamber 15.
  • the valve stem 17 essentially consists of a tube 35, the interior 36 of which can for example be partially filled with metallic sodium, which is liquid at the operating temperature of the gas exchange valve 10.
  • a discharge funnel 40 is provided.
  • the discharge funnel 40 consists of an aluminum sheet. Its upper end 42 encloses the tube 35 of the valve stem 17th
  • the front, widened end 43 of the discharge funnel 40 is connected to an edge 46 of a plate part 47 of the valve plate 16. This is indicated as flanging at 44.
  • the plate part 47 is formed at least in the inner area as a membrane 48.
  • the tube 35 is butt-fitted and welded onto a corresponding receptacle of the membrane 48 at 49.
  • a heat shield 50 which is designed as a thin ceramic plate.
  • the heat shield 50 thus covers the membrane 48 with respect to the combustion chamber 15.
  • the heat shield 50 is flanged on its circumference 51 with the edge 46 of the plate part 47, as indicated at 52.
  • the valve disk and also the discharge funnel can be provided with beads.
  • the maximum pressure in the combustion chamber causes a deflection of heat shield 50 and membrane 48 in the order of magnitude of 0.01 mm, this deflection is transmitted directly to displacement sensor 55 and can be taken off as an electrical signal at connection 56.
  • the actual function of the gas exchange valve 10 is not affected by these measures.
  • the cool fresh gases flow through the gas duct 12 against the direction of arrow 13, and flow around the discharge funnel 40. Since the discharge funnel consists of a relatively good heat-conducting material (aluminum), the pipe 35 and the valve plate 46 protected. In addition, the gases are guided aerodynamically by the shape of the discharge funnel 40, so that as little losses as possible are caused by eddy formation and the like.
  • the discharge funnel 40 is designed as a thin sheet metal part, a considerable cavity remains between it and the tube 35 of the valve stem 17 41.
  • the gas exchange valve 10 shown in FIG. 1 is a lightweight component, the lower mass of which only requires a correspondingly low drive power with each gas exchange.
  • the inside of the funnel 40 and / or the tube 35 can be filled with magnesium powder.
  • the heat shield 50a is arranged on an underside 58 of the telephoto part 47a. As indicated at 51a ′, the heat shield 50a can also protrude laterally beyond the plate part 47a.
  • the heat shield 50a is attached to the plate part 47a by means of a central fastening bolt 60, the details of which are shown in FIGS. 3 and 4 using two variants.
  • the fastening bolt 60 has three sections 61, 62, 63, each with a smaller diameter, from the inside to the outside. With the first section 61, the fastening bolt 60 is arranged in the center of the membrane 48.
  • the second section 62 of the fastening bolt 60 guides the heat shield 50a, for example a ceramic plate, without axially fixing it.
  • a spring 71 expediently ensuring elastic tension of the heat shield 50a with respect to the divider part 48.
  • the third section 63 of the fastening bolt 60 holds the heat shield 50a in the axial direction from the outside.
  • a fastening disk 69 is welded to the circumference of the third section 63, as indicated by 68.
  • the ceramic disk or the valve disk is slightly conical, so that the two parts only touch on the outside without pretensioning. Since here the fastening parts 62 and 63 allow a pretension to be exerted, the two the parts are printed against each other so that they lie against each other overall. Then the welding 68 is carried out. A flattening according to FIG. 1 can be omitted. The cylinder pressure is transmitted to the valve disk via the ceramic disk
  • a cylinder head 77 is again shown, in whose gas channel 78, which acts as an outlet channel, fuel gases flow out, as indicated by an arrow 79
  • the gas exchange valve designated as a whole by 80, has a valve plate 81 and a valve stem 82.
  • the valve plate 81 is directed against a combustion chamber 83. It has a plate part 84, on the edge of which is designated 85.
  • a heat shield 86 again preferably a ceramic plate, is located on the edge 85 The heat shield 86 is fastened to the plate part 84 by means of a central fastening bolt 87, preferably using one of the techniques described in FIGS. 3 and 4. However, the flanging according to FIG. 1 can also be used
  • a plate spring can be arranged between the heat shield 86 and the plate part 84
  • the valve stem 82 consists of a tube 92, the tube 92 being able to enclose an inner tube 93 and this in turn can enclose an interior 94.
  • the tube 93 can be an aluminum tube, for example.
  • the interior 94 can be filled with metallic sodium or magnesium in the manner already described
  • the tube 92 is preferably tapered at its lower end and welded at 91 into a counter-conical receptacle of the membrane 90
  • a first discharge funnel 95 which is preferably made of aluminum sheet, encloses the tube 92 with its upper, tapered end. The end of the first discharge funnel 95 is attached to the plate part 84. It serves for better cooling and heat dissipation of the valve plate 81.
  • a second, outer discharge funnel 96 which consists of a ceramic material.
  • the upper, tapered end of the second discharge funnel 96 encloses the valve stem 82, that is to say the tube 92 in the exemplary embodiment shown.
  • the lower, expanded end of the second discharge funnel 96 is connected to the edge 85 of the plate part 84, for example by bordering, as at 97 indicated.
  • the second discharge funnel 96 Since the second discharge funnel 96 has only a certain wall thickness, an interior 98 remains between it and the tube 92 or the plate part 84 and specifically its inner membrane 90.
  • gas exchange valve shown in FIG. 5 is a lightweight component which, moreover, has excellent thermal resistance in the rear region of the valve plate 81.
  • the outer discharge funnel 96 is shaped in such a way that the flow of the outflowing fuel gases is influenced as little as possible.
  • each of the two discharge funnels 95 and 96 can be omitted.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

La tête (81) d'une soupape de gaz à deux voies présente sur sa face frontale avant un partie siège (84) conçue de préférence, du moins en partie, comme une membrane (90) et qui, du fait de la pression régnant à l'intérieur de la chambre de combustion (83), subit une déformation. Cette déformation peut être transférée par l'intermédiaire d'une tige de soupape (82) à un capteur de position, d'où la possibilité de mesurer la pression à l'intérieur de la chambre de combustion (13).
PCT/EP1998/000830 1997-02-14 1998-02-13 Soupape de gaz a deux voies, et methode de mesure de la pression dans la chambre de combustion d'un moteur a combustion interne WO1998036159A1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP98910663A EP0963509B1 (fr) 1997-02-14 1998-02-13 Soupape de gaz a deux voies, et methode de mesure de la pression dans la chambre de combustion d'un moteur a combustion interne
JP53536198A JP2002511120A (ja) 1997-02-14 1998-02-13 ガス交換バルブおよび内燃エンジンの燃焼室内の圧力を測定するための方法
DE59800762T DE59800762D1 (de) 1997-02-14 1998-02-13 Gaswechselventil und verfahren zum messen des druckes in einem brennraum einer brennkraftmaschine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19705621A DE19705621A1 (de) 1997-02-14 1997-02-14 Gaswechselventil und Verfahren zum Messen des Druckes in einem Brennraum einer Brennkraftmaschine
DE19705621.0 1997-02-14

Publications (1)

Publication Number Publication Date
WO1998036159A1 true WO1998036159A1 (fr) 1998-08-20

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PCT/EP1998/000830 WO1998036159A1 (fr) 1997-02-14 1998-02-13 Soupape de gaz a deux voies, et methode de mesure de la pression dans la chambre de combustion d'un moteur a combustion interne

Country Status (4)

Country Link
EP (1) EP0963509B1 (fr)
JP (1) JP2002511120A (fr)
DE (2) DE19705621A1 (fr)
WO (1) WO1998036159A1 (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10354077A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
DE10354076A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
DE10354086A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
DE102004010309A1 (de) * 2004-03-03 2005-09-22 Mahle Ventiltrieb Gmbh Gaswechselventil eines Verbrennungsmotors
US7240895B2 (en) 2004-03-03 2007-07-10 Mahle Ventiltrieb Gmbh Gas exchange valve for an internal combustion engine
WO2008090312A1 (fr) * 2007-01-22 2008-07-31 Lotus Cars Limited Système de mesure de pression dans un cylindre
US7941922B2 (en) 2003-11-19 2011-05-17 Daimler Ag Method of manufacturing a lightweight valve

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Publication number Priority date Publication date Assignee Title
JP4771868B2 (ja) * 2006-06-06 2011-09-14 サンコール株式会社 内燃機関用バルブ構造
JP4690369B2 (ja) * 2007-08-08 2011-06-01 トヨタ自動車株式会社 内燃機関用バルブ
DE112008003309T5 (de) * 2007-12-03 2010-10-07 Cts Corp., Elkhart Linearer Positionssensor
BR102013021206A2 (pt) * 2012-12-11 2014-09-09 Wärtsilä Schweiz AG Válvula de troca de gás bem como método para fabricação de válvula de troca de gás
WO2014155667A1 (fr) * 2013-03-29 2014-10-02 日鍛バルブ株式会社 Soupape champignon creuse
DE102013210900A1 (de) * 2013-06-11 2014-12-11 Mahle International Gmbh Gaswechselventil einer Brennkraftmaschine
DE212014000130U1 (de) 2013-08-16 2016-01-26 Eaton Corporation Detektionsvorrichtung für die Temperatur und/oder den Druck in einem Zylinder eines Verbrennungsmotors
JP6667087B2 (ja) * 2017-10-19 2020-03-18 株式会社三井Ｅ＆Ｓマシナリー 圧力計測装置付きバルブ

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DE3302650A1 (de) 1983-01-27 1984-08-02 Oliver Dipl.-Phys. 7148 Remseck Laing Ventil fuer verbrennungsmotor
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DE3926431A1 (de) 1989-08-10 1991-02-14 Audi Ag Hubventil
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Publication number Priority date Publication date Assignee Title
CH275913A (de) * 1949-09-07 1951-06-15 Sulzer Ag Ventil mit Bruchsicherung.
EP0048333A1 (fr) 1980-09-22 1982-03-31 Eaton Corporation Soupape à écran
DE3236354A1 (de) 1982-02-03 1983-08-11 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8900 Augsburg Von verbrennungswaerme unmittelbar beaufschlagtes, axial hin- und hergehend bewegtes bauteil einer hubkolbenbrennkraftmaschine mit hitzeschild
DE3247487A1 (de) 1982-12-22 1984-06-28 Klöckner-Humboldt-Deutz AG, 5000 Köln Tellerventil fuer brennkraftmaschinen
DE3302650A1 (de) 1983-01-27 1984-08-02 Oliver Dipl.-Phys. 7148 Remseck Laing Ventil fuer verbrennungsmotor
JPS60164611A (ja) * 1984-02-07 1985-08-27 Mitsubishi Heavy Ind Ltd 内燃機関の排気弁監視装置
US4601196A (en) * 1984-08-15 1986-07-22 General Motors Corporation Engine combustion chamber pressure sensor
US4881500A (en) * 1987-12-04 1989-11-21 Ngk Spark Plug Co., Ltd. Poppet valve made of ceramics
DE3926431A1 (de) 1989-08-10 1991-02-14 Audi Ag Hubventil
US4969352A (en) * 1989-08-21 1990-11-13 General Motors Corporation Combustion pressure sensor
DE4438059A1 (de) * 1993-11-05 1995-05-11 Volkswagen Ag Einrichtung zur meßtechnischen Erfassung von Ventil-Hubbewegungen

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Title
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Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10354077A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
DE10354076A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
DE10354086A1 (de) * 2003-11-19 2005-06-02 Daimlerchrysler Ag Leichtbauventil
DE10354077B4 (de) * 2003-11-19 2005-10-20 Daimler Chrysler Ag Leichtbauventil
DE10354086B4 (de) * 2003-11-19 2005-11-24 Daimlerchrysler Ag Leichtbauventil
DE10354076B4 (de) * 2003-11-19 2006-03-09 Daimlerchrysler Ag Leichtbauventil
US7862007B2 (en) 2003-11-19 2011-01-04 Daimler Ag Lightweight valve
US7905468B2 (en) 2003-11-19 2011-03-15 Daimler Ag Lightweight valve
US7941922B2 (en) 2003-11-19 2011-05-17 Daimler Ag Method of manufacturing a lightweight valve
DE102004010309A1 (de) * 2004-03-03 2005-09-22 Mahle Ventiltrieb Gmbh Gaswechselventil eines Verbrennungsmotors
US7240895B2 (en) 2004-03-03 2007-07-10 Mahle Ventiltrieb Gmbh Gas exchange valve for an internal combustion engine
WO2008090312A1 (fr) * 2007-01-22 2008-07-31 Lotus Cars Limited Système de mesure de pression dans un cylindre

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DE19705621A1 (de) 1998-08-20
EP0963509B1 (fr) 2001-05-23
EP0963509A1 (fr) 1999-12-15
JP2002511120A (ja) 2002-04-09
DE59800762D1 (de) 2001-06-28

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