US2868187A - Masked valve - Google Patents

Masked valve Download PDF

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Publication number
US2868187A
US2868187A US544798A US54479855A US2868187A US 2868187 A US2868187 A US 2868187A US 544798 A US544798 A US 544798A US 54479855 A US54479855 A US 54479855A US 2868187 A US2868187 A US 2868187A
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Prior art keywords
valve
cap
mask
head
masked
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Expired - Lifetime
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US544798A
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Meurer Siegfried
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MAN AG
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MAN Maschinenfabrik Augsburg Nuernberg AG
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    • 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
    • F01L3/06—Valve members or valve-seats with means for guiding or deflecting the medium controlled thereby, e.g. producing a rotary motion of the drawn-in cylinder charge
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Definitions

  • This invention relates to air intake valves for internal combustion engines.
  • the invention is directed to an intake valve provided with a mask which is movable with the valve during the opening and closing thereof, and which serves to direct the intake air into the cylinder with a predetermined swirling movement.
  • the object of the invention is to mount a mask on a valve head so that it rides with the head during the opening and closing of the valve, but remains stationary with respect to rotational movements of the valve head With respect to the valve seat.
  • inlet valves are used upon which are mounted masks so that the stream of the intake gas is throttled across a portion of the valve seat, and the intake gas thus given a desired swirling direction into the cylinder.
  • a valve having a fixed mask must be prevented from rotating in order to keep the mask in its proper aerodynamical position with respect to the valve port. This results in the disadvantage in that the valve head is kept from rotating, and can not self-grind itself upon the valve seat.
  • the objects of this invention are obtained by forming the mask of a separate piece and mounting it upon the valve head so that it will move in a longitudinal direction with the valve head during the opening and closing of the valve,
  • a spring 8 coiled about valve stem 4 has its lower end fastened by means of a flange 9 to cap 6.
  • the upper end 10 of spring 8 projects into a slot Ill-a, in valve guide 2. Consequently, cap 6 is fixed against rotation and merely slides on valve head when the latter rotates.
  • Figure 1 is a cross-sectional view through an intake valve provided with a mask
  • Figure 2 is a similar view of a modified form of the invention.
  • Figure 3 is a plan view of a modified form of a mask for a valve
  • Figure 3a is a cross-sectional view through an intake valve having the mask of Figure 3;
  • Figure 4 is a plan view of a further modified form of a mask for a valve.
  • the cylinder head 1 has a valve guide 2 fitted therein, and a valve 3 having a stem 4 slidably mounted in guide 2.
  • the valve head 5 fits as usual upon its corresponding valve seat.
  • valve stem 4 moves longitudinally in guide 2 to open and close valve head 5, and at the same time rotates about its longitudinal axis.
  • a separate cap 6 rests upon the inner surface of valve head 5, and is provided with a mask 7 in order to deflect the incoming gases from the intake duct through the inlet port and produce a predetermined swirl in the cylinder.
  • valve head 5 so that the cap and mask move longitudinally with the valve when the same opens and closes.
  • all the parts are connected operatively in each phase of the valve stroke, and the friction between valve head 5 and cap 6 is not so strong as to prevent valve head 8 from rotating.
  • the free end 10 of spring 8 could also be secured in a notch in cylinder head 1, or in any other manner in order to keep it from rotating.
  • cap 6 is provided with an upwardly-extending tongue 11 which projects into a slot 12 in the lower end of valve guide 2, and this tongue moves in slot 12 only during the longitudinal stroke of the valve, or, in other words, slot 12 prevents cap 6 from rotating with respect to the valve, and again the position of mask 7 is fixed.
  • Cap 6 is kept seated upon valve head 5 by means of an expansion ring 13 which engages in opposing undercut portions 14 and 15 in the valve stem 4 and the base of tongue 11, respectively.
  • slot 12 could be replaced by a notch in the cylinder head, or any other means can be used to secure tongue 11 from rotational movement about the longitudinal axis of the valve.
  • the valve cap 16 of Figures 3 and 3a includes the mask 7 as in Figures 1 and 2. However, this sheetmetal cap has radially extending slits 17 so that the material be tween the slits is bent upwardly into the form of spring leaf tongues 18, which grasp the valve stem with their upper ends seated in a groove 19 as indicated in Figure 3a. This engagement holds cap 16 upon the valve head, but in such a manner that the valve head can still rotate, while the cap is kept from rotating by means of tongues 20 on either or both of the mask 7 or a spring leaf tongue 18, and which, similar to tongue 11 of Figure 2, are guided within a slot within the cylinder head or in the valve guide 2.
  • Figure 4 shows a further form of the invention in which a sector-shaped cap 21, including mask 7, is secured to a snap ring 22 so that the ring 22 can grasp the valve stem as described for the tongues 18 in Figure 3a. Stiffening beads 23 are formed in the cap sector. The cap is restrained from rotating on the valve head by means of tongues 20, either attached to mask 7 or ring 22, or both, and functioning like the tongues 11 in Figure 2.
  • a masked intake valve for an internal combustion engine comprising a valve head, a separate mask mounted upon said head, means fixing said mask to said valve head for longitudinal movement therewith, and means for restraining said mask from rotational movement with said valve head.
  • a masked intake valve as in claim 1 said fixing means comprising a cap slidably mounted on said valve, and a spring yieldably holding said cap upon said valve head.
  • a masked valve as in claim 2 further comprising means securing one end of said spring to said cap, and said restraining means comprising means for holding the other end of said spring against rotational movement with said valve.
  • said fixing means further comprising a cap slidably mounted on said valve, a tongue projecting from said cap, and groove means for receiving said tongue for longitudinal movement only of said cap with said valve head.
  • a masked valve as in claim 4 further comprising a valve guide, and an expansion ring between said cap and said valve guide.
  • a masked valve as in claim 1 said fixing means further comprising a cap slidably mounted on said valve head, spring-leaf tongues struck out from said cap and engaging said valve, and said restraining means further comprising tongues projecting from said cap.
  • said fixing means further comprising a sector-like cap slidably mounted on said valve head, a valve stem, a groove in said stem, and a snap ring secured to said cap and engaging said groove.
  • a masked intake valve having a valve head with an air deflecting mask thereon, said valve performing a rotational movement about its axis during its working stroke, comprising means References Cited in the file of this patent FOREIGN PATENTS 515,718 Germany Jan. 12, 1931 310,678 Italy Aug. 31, 1933 310,679 Italy Aug. 31, 1933 311,539 Italy Oct. 4, 1933 465,261 Great Britain May 4, 1937 682,448 Great Britain Nov. 12, 1952

Description

S. MEURER MASKED VALVE Jan. 13, 1959 Filed Nov. 3, 1955 INVENTOR United States Patent MASKED VALVE Siegfried Meurer, Numberg, Germany, assignor to Maschmenfabrik Augsburg-Niirnberg A. G., Nurnberg, Germany Application November 3, 1955, Serial No. 544,798 Claims priority, application Germany November 4, 1954 8 Claims. (Cl. 123188) This invention relates to air intake valves for internal combustion engines. In particular, the invention is directed to an intake valve provided with a mask which is movable with the valve during the opening and closing thereof, and which serves to direct the intake air into the cylinder with a predetermined swirling movement. The object of the invention is to mount a mask on a valve head so that it rides with the head during the opening and closing of the valve, but remains stationary with respect to rotational movements of the valve head With respect to the valve seat.
In order to produce a swirling motion in the combustion gases, including the air introduced into the cylinder of an internal combustion engine, inlet valves are used upon which are mounted masks so that the stream of the intake gas is throttled across a portion of the valve seat, and the intake gas thus given a desired swirling direction into the cylinder. However, such a valve having a fixed mask must be prevented from rotating in order to keep the mask in its proper aerodynamical position with respect to the valve port. This results in the disadvantage in that the valve head is kept from rotating, and can not self-grind itself upon the valve seat. In general, the objects of this invention are obtained by forming the mask of a separate piece and mounting it upon the valve head so that it will move in a longitudinal direction with the valve head during the opening and closing of the valve,
, 2,868,187 Patented Jan. 13, 1959 A spring 8 coiled about valve stem 4 has its lower end fastened by means of a flange 9 to cap 6. The upper end 10 of spring 8 projects into a slot Ill-a, in valve guide 2. Consequently, cap 6 is fixed against rotation and merely slides on valve head when the latter rotates.
At the same time spring 8 keeps cap 6 seated on valve but will not move with the rotation of the valve head.
Consequently, no means are provided for preventing the rotation of the valve, but it is only necessary to provide means for keeping the mask stationary with respect to any rotation of the valve head.
The means by which the objects of the invention are obtained are described more fully with reference to the accompanying drawings, in which Figure 1 is a cross-sectional view through an intake valve provided with a mask;
Figure 2 is a similar view of a modified form of the invention;
Figure 3 is a plan view of a modified form of a mask for a valve;
Figure 3a is a cross-sectional view through an intake valve having the mask of Figure 3; and
Figure 4 is a plan view of a further modified form of a mask for a valve.
In the drawings, similar elements are designated by the same reference characters.
As seen in Figure 1, the cylinder head 1 has a valve guide 2 fitted therein, and a valve 3 having a stem 4 slidably mounted in guide 2. The valve head 5 fits as usual upon its corresponding valve seat. As in ordinary poppet valves, valve stem 4 moves longitudinally in guide 2 to open and close valve head 5, and at the same time rotates about its longitudinal axis.
A separate cap 6 rests upon the inner surface of valve head 5, and is provided with a mask 7 in order to deflect the incoming gases from the intake duct through the inlet port and produce a predetermined swirl in the cylinder.
head 5 so that the cap and mask move longitudinally with the valve when the same opens and closes. By this means, all the parts are connected operatively in each phase of the valve stroke, and the friction between valve head 5 and cap 6 is not so strong as to prevent valve head 8 from rotating. The free end 10 of spring 8 could also be secured in a notch in cylinder head 1, or in any other manner in order to keep it from rotating.
In the modified form in Figure 2, cap 6 is provided with an upwardly-extending tongue 11 which projects into a slot 12 in the lower end of valve guide 2, and this tongue moves in slot 12 only during the longitudinal stroke of the valve, or, in other words, slot 12 prevents cap 6 from rotating with respect to the valve, and again the position of mask 7 is fixed. Cap 6 is kept seated upon valve head 5 by means of an expansion ring 13 which engages in opposing undercut portions 14 and 15 in the valve stem 4 and the base of tongue 11, respectively. As in Figure 1, slot 12 could be replaced by a notch in the cylinder head, or any other means can be used to secure tongue 11 from rotational movement about the longitudinal axis of the valve.
The valve cap 16 of Figures 3 and 3a includes the mask 7 as in Figures 1 and 2. However, this sheetmetal cap has radially extending slits 17 so that the material be tween the slits is bent upwardly into the form of spring leaf tongues 18, which grasp the valve stem with their upper ends seated in a groove 19 as indicated in Figure 3a. This engagement holds cap 16 upon the valve head, but in such a manner that the valve head can still rotate, while the cap is kept from rotating by means of tongues 20 on either or both of the mask 7 or a spring leaf tongue 18, and which, similar to tongue 11 of Figure 2, are guided within a slot within the cylinder head or in the valve guide 2.
Figure 4 shows a further form of the invention in which a sector-shaped cap 21, including mask 7, is secured to a snap ring 22 so that the ring 22 can grasp the valve stem as described for the tongues 18 in Figure 3a. Stiffening beads 23 are formed in the cap sector. The cap is restrained from rotating on the valve head by means of tongues 20, either attached to mask 7 or ring 22, or both, and functioning like the tongues 11 in Figure 2.
Having now described the means by which the objects of the invention are obtained, I claim:
1. A masked intake valve for an internal combustion engine, comprising a valve head, a separate mask mounted upon said head, means fixing said mask to said valve head for longitudinal movement therewith, and means for restraining said mask from rotational movement with said valve head.
2. A masked intake valve as in claim 1, said fixing means comprising a cap slidably mounted on said valve, and a spring yieldably holding said cap upon said valve head.
3. A masked valve as in claim 2, further comprising means securing one end of said spring to said cap, and said restraining means comprising means for holding the other end of said spring against rotational movement with said valve.
4. A masked valve as in claim 1, said fixing means further comprising a cap slidably mounted on said valve, a tongue projecting from said cap, and groove means for receiving said tongue for longitudinal movement only of said cap with said valve head.
5. A masked valve as in claim 4, further comprising a valve guide, and an expansion ring between said cap and said valve guide.
6. A masked valve as in claim 1, said fixing means further comprising a cap slidably mounted on said valve head, spring-leaf tongues struck out from said cap and engaging said valve, and said restraining means further comprising tongues projecting from said cap.
7. A masked valve as in claim 1, said fixing means further comprising a sector-like cap slidably mounted on said valve head, a valve stem, a groove in said stem, and a snap ring secured to said cap and engaging said groove.
8. In an internal combustion engine, a masked intake valve having a valve head with an air deflecting mask thereon, said valve performing a rotational movement about its axis during its working stroke, comprising means References Cited in the file of this patent FOREIGN PATENTS 515,718 Germany Jan. 12, 1931 310,678 Italy Aug. 31, 1933 310,679 Italy Aug. 31, 1933 311,539 Italy Oct. 4, 1933 465,261 Great Britain May 4, 1937 682,448 Great Britain Nov. 12, 1952
US544798A 1954-11-04 1955-11-03 Masked valve Expired - Lifetime US2868187A (en)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757757A (en) * 1971-01-28 1973-09-11 Semt Internal-combustion engine intake-valve provided with a deflector plate
US4309969A (en) * 1980-03-17 1982-01-12 General Motors Corporation Induction system with high-swirl intake valve
US4362134A (en) * 1978-05-22 1982-12-07 Eaton Corporation Shielded valve
US6675757B2 (en) * 2001-01-31 2004-01-13 Trw Deutschland Gmbh Intake valve for an internal combustion machine
US7325521B1 (en) * 2006-08-02 2008-02-05 Ford Global Technologies, Llc System and method for improved cam retard

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE515718C (en) * 1931-01-12 Heinrich Ziegler Inlet valve for internal combustion engines
GB465261A (en) * 1936-01-16 1937-05-04 Jean Blanchet Improvements in and relating to inlet valves for internal combustion engines
GB682448A (en) * 1948-05-27 1952-11-12 Semt Means for protecting the exhaust valves of internal-combustion engines

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE515718C (en) * 1931-01-12 Heinrich Ziegler Inlet valve for internal combustion engines
GB465261A (en) * 1936-01-16 1937-05-04 Jean Blanchet Improvements in and relating to inlet valves for internal combustion engines
GB682448A (en) * 1948-05-27 1952-11-12 Semt Means for protecting the exhaust valves of internal-combustion engines

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3757757A (en) * 1971-01-28 1973-09-11 Semt Internal-combustion engine intake-valve provided with a deflector plate
US4362134A (en) * 1978-05-22 1982-12-07 Eaton Corporation Shielded valve
US4309969A (en) * 1980-03-17 1982-01-12 General Motors Corporation Induction system with high-swirl intake valve
US6675757B2 (en) * 2001-01-31 2004-01-13 Trw Deutschland Gmbh Intake valve for an internal combustion machine
US7325521B1 (en) * 2006-08-02 2008-02-05 Ford Global Technologies, Llc System and method for improved cam retard
US20080035084A1 (en) * 2006-08-02 2008-02-14 James Leiby System and method for improved cam retard

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