WO1995012749A1 - Dispositif de soupape a fonctionnement mecanique intermittent force - Google Patents

Dispositif de soupape a fonctionnement mecanique intermittent force Download PDF

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Publication number
WO1995012749A1
WO1995012749A1 PCT/JP1994/001779 JP9401779W WO9512749A1 WO 1995012749 A1 WO1995012749 A1 WO 1995012749A1 JP 9401779 W JP9401779 W JP 9401779W WO 9512749 A1 WO9512749 A1 WO 9512749A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
upper arm
lower arm
shaft
arm
Prior art date
Application number
PCT/JP1994/001779
Other languages
English (en)
Japanese (ja)
Inventor
Hiroyuki Kakizawa
Original Assignee
Hiroyuki Kakizawa
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 Hiroyuki Kakizawa filed Critical Hiroyuki Kakizawa
Publication of WO1995012749A1 publication Critical patent/WO1995012749A1/fr

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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
    • F01L1/30—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of positively opened and closed valves, i.e. desmodromic valves

Definitions

  • the present invention relates to a drive for opening and closing a port valve for performing intake and exhaust of an internal combustion engine, and for improving the efficiency and moving the valve more accurately at high revolutions in the internal combustion engine.
  • a valve for performing intake and exhaust in an internal combustion engine is provided with a port valve, a valve 'spring and valve' sheet, a valve stem guide, and a port-valve. It consists of a drive shaft (cam 'shaft) for opening and closing.
  • a car engine (internal combustion engine) has a gasoline engine
  • valve's spring in this component presses against the valve's seat while the pot valve is closed to maintain the airtightness in the cylinder, and other movements during valve movement. It has the role of pressing the moving parts of the valve mechanism against the cam surface.
  • the drive shaft (cam 'shaft) opens and closes the valve while suppressing the strong reaction force. Because of this resistance, the drive shaft (cam shaft) causes rotation fluctuation. Due to this, a shift in the operation timing for accurate movement of the port valve cannot be avoided at present.
  • Valve 'surging' means that when the number of times the valve is opened and closed by the drive shaft (cam 'shaft) is equal to or an integer multiple of the natural frequency of the valve' spring, the valve spring is driven The forced vibration caused by the cam 'shaft) and the natural vibration of the valve spring itself resonate, causing a undulating vibration irrespective of the operation by the drive shaft (cam shaft).
  • the drive shaft (cam 'shaft) in the components must be rotated the same number of times as the number of opening and closing of the port' valve.
  • an object of the present invention is to provide a mechanical valve opening / closing that does not have the drawbacks of the conventional port valve opening / closing, operates well, and is efficient. Disclosure of the invention
  • an upper arm and a lower arm for opening and closing a port are combined, and a driving shaft (cam 'shaft) is arranged therebetween.
  • the drive shaft (camshaft) is always in contact with the upper arm and the lower arm because of its rhombic (elliptical) shape.
  • the opening and closing of the port 'valve' does not depend on the valve 'spring, and the valve can be forcibly opened and closed by a completely mechanical system.
  • the drive shaft (cam 'shaft) has a diamond shape (ellipse),
  • FIG. 1 is a front view of the present invention.
  • FIG. 2 is a diagram showing a plane of the present invention.
  • FIG. 3 is a diagram showing a bottom surface of the present invention.
  • FIG. 4 is a diagram showing the left and right sides of the present invention.
  • FIG. 5 is a view showing the development of the upper arm of the present invention.
  • FIG. 6 is a diagram showing the development of the lower arm of the present invention.
  • FIG. 7 is a view showing the front of the auxiliary component of the present invention.
  • FIG. 8 is a diagram showing a plan view of the auxiliary component of the present invention.
  • FIG. 9 is a view showing a side surface of the auxiliary component of the present invention.
  • FIG. 10 is a diagram showing a front view of a driving mechanism according to the present invention.
  • FIG. 11 is a diagram showing a plane of a drive shaft of the present invention.
  • FIG. 12 is a diagram showing a side surface of the drive shaft of the present invention.
  • Fig. 1 shows a combination of an upper arm 1 and a lower arm 2 for opening and closing a port and a valve.
  • a drive shaft 3 (cam shaft) is arranged between the upper arm 1 and the lower arm 2.
  • the driving screw 3 (cam 'shaft) is shown with a circular force ⁇ .
  • the actual drive shaft 3 (cam shaft) becomes a diamond (ellipse) and rotates.
  • the upper arm 1 and the lower arm 2 alternately move up and down with the circular portion at the center as a fulcrum, while the upper arm 1
  • This forced open / close valve mechanism does not use a valve 'spring, unlike the conventional port' valve drive.
  • Fig. 2 shows the upper arm 1 of the forced opening / closing valve mechanism shown in Fig. 1.
  • Fig. 3 shows the upper arm 1 of the mechanical forced open / close valve mechanism shown in Fig. 1.
  • the bottom view shows the combination of the lower arm 2 and the auxiliary parts 4 attached thereto.
  • Fig. 4 shows the upper arm 1 of the mechanical forced open / close valve mechanism shown in Fig. 1.
  • FIG. 5 shows the development of the mechanical opening / closing valve mechanism shown in FIG. 1 in which the upper arm 1 and the auxiliary part 4 are combined.
  • the upper arm 1 raises and lowers on both sides with the circular portion at the center as a fulcrum, and is mainly used for opening a pot valve.
  • the feature of the upper arm 1 is that the drive shaft 3 (cam shaft) shown in FIG.
  • the part to receive is that it is one place.
  • FIG. 6 shows the development of the mechanical forced opening / closing valve mechanism shown in FIG. 1 in which the lower arm 2 and the auxiliary part 4 are combined.
  • the lower arm 2 is the same as the upper arm 1, with the center part serving as a fulcrum, and both sides move up and down, mainly used to close the port valve.
  • the feature of the lower arm 2 is that the drive shaft 3 (cam, shaft) shown in FIG.
  • the receiving part is divided into two places.
  • the portion of the upper arm 1 receiving the drive shaft 3 (cam shaft) shown in FIG. 5 is different from the portion of the lower arm 2 receiving the drive shaft 3 (cam, shaft).
  • ⁇ 3 (cam shaft) can be provided with the shape required to drive the upper arm 1 and the shape required to drive the lower arm 2 respectively.
  • drive ⁇ 3 (cam shaft) drives upper arm 1,
  • the upper arm 1 Since the upper arm 1 has the central part as a fulcrum, the part combining the auxiliary parts 4 moves, and the auxiliary part 4 is connected to the port valve so that the valve can be opened. I can do it.
  • the valve can be closed by driving the lower arm 2 in reverse.
  • the upper arm 1 and the lower arm 2 do not buffer each other, and are mechanically operated without using valves and springs.
  • FIG. 7 shows the front of the auxiliary part 4 of the mechanical forced opening / closing valve mechanism shown in FIG. In the dotted line, the stem of the pot 'Valve of valve' is inserted.
  • One auxiliary part 4 is used to connect the port valve to the upper arm 1 and one to connect the port 'valve to the lower arm 2.
  • FIG. 8 shows a plan view of the auxiliary part 4 of the mechanical forced opening / closing valve mechanism shown in FIG. The stem of the pot / valve enters the center circle.
  • the upper arm 1 or the lower arm 2 receives both sides of the auxiliary part 4.
  • FIG. 9 is a side view of the auxiliary part 4 of the mechanical forcible opening / closing valve mechanism shown in FIG.
  • the present invention increases the portions for receiving the auxiliary parts 4 of the upper arm 1 and the lower arm 2 so that a plurality of port valves can be connected to the same upper arm 1 or
  • the lower arm 2 makes it impossible to receive.
  • FIG. 10 shows a front view of a drive shaft 3 (cam shaft) of the mechanical forced opening / closing valve mechanism shown in FIG.
  • the shape is indicated by a circle for easy understanding, but in FIG. 10, the shape is a diamond (ellipse), and the circular portion corresponds to the shaft of the drive shaft 3 (cam shaft).
  • diamond (ellipse) force ⁇ overlapping.
  • the diamond-shaped (elliptical) arc is the part that drives the upper arm 1 or the lower arm 2.
  • FIG. 11 shows a plane of a drive shaft 3 (cam shaft) of the mechanical forced opening / closing valve mechanism shown in FIG.
  • the upper and lower parts are dedicated to the lower arm 2 respectively.
  • the central part is a dedicated driving part for the upper arm 1.
  • FIG. 12 shows the side surface of the drive shaft 3 (cam shaft) of the mechanical forced opening / closing valve mechanism shown in FIG.
  • both the left and right sides are dedicated driving parts for the lower arm 2, and the central part is dedicated driving part for the upper arm 1.
  • the drive shaft 3 (cam shaft) of the present invention has a rhombus (ellipse) shape, so that the drive shaft 3 (camshaft) is only half the number of times the port valve is opened and closed. If you rotate the shaft). Therefore, the efficiency of the driving shaft is improved.
  • the upper arm 1 and the lower arm 2 can be in constant contact with the arm 1 in a well-balanced manner.
  • the mechanical forcible opening / closing valve mechanism of the present invention is useful for opening / closing a port / valve for intake / exhaust of a gasoline engine (a 4-cycle engine) or a diesel / engine for an internal combustion engine. is there.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Mechanically-Actuated Valves (AREA)

Abstract

L'invention concerne l'entraînement intermittent d'une soupape à champignon chargée de l'admission et de l'échappement dans un moteur à combustion interne, cette soupape étant entraînée d'une façon différente des soupapes classiques et se déplaçant mécaniquement sans l'aide d'un ressort. On décrit un dispositif de soupape intermittent qui est constitué essentiellement d'acier et de différents autres types de matériaux métalliques. Un bras supérieur (1) et un bras inférieur (2) sont combinés et séparés par un arbre (3) d'entraînement prenant la forme d'un losange (ovale) de façon à entrer en contact avec les deux bras, qui accomplissent alternativement des mouvements verticaux. Cette soupape à champignon peut s'ouvrir et se fermer grâce au montage d'une pièce (4) auxiliaire à laquelle elle est reliée.
PCT/JP1994/001779 1993-11-05 1994-10-24 Dispositif de soupape a fonctionnement mecanique intermittent force WO1995012749A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP5/309616 1993-11-05
JP30961693A JPH07127406A (ja) 1993-11-05 1993-11-05 機械式強制開閉バルブ機構

Publications (1)

Publication Number Publication Date
WO1995012749A1 true WO1995012749A1 (fr) 1995-05-11

Family

ID=17995179

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/JP1994/001779 WO1995012749A1 (fr) 1993-11-05 1994-10-24 Dispositif de soupape a fonctionnement mecanique intermittent force

Country Status (2)

Country Link
JP (1) JPH07127406A (fr)
WO (1) WO1995012749A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6036502U (ja) * 1983-08-22 1985-03-13 本田技研工業株式会社 内燃機関のバルブ強制開閉装置
JPS6439405U (fr) * 1987-09-01 1989-03-09
JPH01144414U (fr) * 1988-03-29 1989-10-04
JPH01144411U (fr) * 1988-03-28 1989-10-04
JPH045407A (ja) * 1990-04-24 1992-01-09 Nissan Motor Co Ltd エンジンの弁強制開閉装置

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6036502B2 (ja) * 1983-01-17 1985-08-21 株式会社 増田製作所 不織布ロ−ル

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6036502U (ja) * 1983-08-22 1985-03-13 本田技研工業株式会社 内燃機関のバルブ強制開閉装置
JPS6439405U (fr) * 1987-09-01 1989-03-09
JPH01144411U (fr) * 1988-03-28 1989-10-04
JPH01144414U (fr) * 1988-03-29 1989-10-04
JPH045407A (ja) * 1990-04-24 1992-01-09 Nissan Motor Co Ltd エンジンの弁強制開閉装置

Also Published As

Publication number Publication date
JPH07127406A (ja) 1995-05-16

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