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WO2010087901A1 - Ensemble soupape de régulation et appareil doté d'un ensemble soupape de régulation - Google Patents

Ensemble soupape de régulation et appareil doté d'un ensemble soupape de régulation Download PDF

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Publication number
WO2010087901A1
WO2010087901A1 PCT/US2009/067344 US2009067344W WO2010087901A1 WO 2010087901 A1 WO2010087901 A1 WO 2010087901A1 US 2009067344 W US2009067344 W US 2009067344W WO 2010087901 A1 WO2010087901 A1 WO 2010087901A1
Authority
WO
WIPO (PCT)
Prior art keywords
valve
inlet
valve assembly
volume
outlet
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
Application number
PCT/US2009/067344
Other languages
English (en)
Inventor
Chris Johnson
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.)
Solberg Manufacturing Co
Original Assignee
Solberg Manufacturing Co
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 Solberg Manufacturing Co filed Critical Solberg Manufacturing Co
Publication of WO2010087901A1 publication Critical patent/WO2010087901A1/fr
Anticipated expiration legal-status Critical
Ceased 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
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/0011—Breather valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/02—Crankcase ventilating or breathing by means of additional source of positive or negative pressure
    • F01M13/021—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure
    • F01M2013/026—Crankcase ventilating or breathing by means of additional source of positive or negative pressure of negative pressure with pumps sucking air or blow-by gases from the crankcase

Definitions

  • the present invention concerns a regulator valve in fluid communication with a crankcase and a vacuum source such as a blower.
  • U.S. Patent 5,347,973, Walker discloses a vacuum relief valve for use with internal combustion engines.
  • the valve is connected to the breathing tubes of an engine on one side and to the air induction system of the engine on the opposite side. Under certain conditions during engine operation, the induction system has a tendency to reduce the pressure within the crankcase creating a partial vacuum.
  • the vacuum relief valve is interposed between the induction system and the crankcase and controls or limits the amount of partial vacuum thus created to a maximum of 7 inches of vacuum or less. This is accomplished by providing means for limiting the size of a passageway through the valve and thereby limit the amount of suction that can be communicated by the induction system to the crankcase.
  • a spring biased piston is used to control the size of the passageway.
  • An auxiliary pathway to atmosphere is also incorporated in the valve so that the breather tubes can be vented when the passage way through the valve is partially or fully closed.
  • U.S. Patent 5,542,401, Newarski concerns an apparatus and method for maintaining a substantially constant partial vacuum in the crankcase of an internal combustion engine. Maintaining the partial vacuum, in addition to essentially eliminating crankcase emissions, substantially reduces tail pipe emissions of carbon monoxide and unburned hydrocarbons as evidenced by a test conducted according to California Air Research Board Test Method 505 (Hot). The crankcase partial vacuum also has the added benefit of reducing the rate at which the engine lubricating oil is contaminated. BRIEF DESCRIPTION OF THE DRAWINGS
  • FIG. 1 is a schematic of an apparatus embodying principles of the present invention wherein an inlet of the valve assembly is coupled to an outlet of a vacuum pump and wherein an outlet of the valve assembly is fluidly coupled to an intake of an air oil separator.
  • FIG. 2 is a side view of a housing of the regulator valve assembly of FIG. 1 ; the side view exemplifies the stepped internal diameters of the assembly housing with dashed lines.
  • FIG. 3 A is a cross-sectional view of the valve assembly taken along the diameter of the valve assembly's housing, wherein the valve assembly is in a closed position, and wherein 0 cfm is passing through the valve assembly.
  • FIG. 3B is a cross-sectional view of the valve assembly taken along the diameter of the valve assembly's housing, wherein the valve assembly is in a partially open position, and wherein 15 cfm is passing through the valve assembly.
  • FIG. 3C is a cross-sectional view of the valve assembly taken along the diameter of the valve assembly's housing, wherein the valve assembly is in a fully open position, and wherein 25 cfm is passing through the valve assembly.
  • FIG. 3D is a cross-sectional view of the valve assembly taken along the diameter of the valve assembly's housing, wherein the valve assembly is in a by-pass position, and wherein air is exiting the valve assembly at the inlet of the valve assembly.
  • FIG. 4A is a top plan view of a base of the valve assembly.
  • FIG. 4B is a cross-sectional view of the base taken along view lines 5 A.
  • FIG. 5 A is a top plan view of the valve of the valve assembly.
  • FIG. 5B is a cross-sectional view of the valve taken along view lines 6 A.
  • an air oil separator 20 has an intake 22 which is fluidly coupled to an outlet 32 of a crankcase 30.
  • the separator intake 22 includes an inlet 22a through the housing 23 of the separator 20.
  • the outlet 24 of the air oil separator 20 is fluidly coupled to an inlet 51 of vacuum pump 50.
  • a conduit 40 couples the air oil separator outlet 24 to the vacuum pump inlet 51.
  • the vacuum pump inlet 51 includes an opening into the vacuum pump.
  • the separator outlet 24 includes an opening through the housing of the air oil separator 20.
  • the vacuum pump 50 when in operation draws air contaminated with oil out from the crankcase 30 and through the air oil separator 20. Cleaner air is then drawn into the vacuum pump 50. The air oil mixture and air travels in the direction of the arrows. Arrow 61 is for the air oil mixture. Arrow 62 is for the cleaner air.
  • the inlet 71 of valve assembly 70 receives air from the vacuum pump outlet 52.
  • the inlet 71 of valve assembly 70 includes an opening into valve housing 72.
  • the outlet 52 of the vacuum pump 50 includes an opening from the vacuum pump 50.
  • a conduit 42 couples the vacuum pump outlet to the valve assembly inlet.
  • valve housing 72 Air received by valve housing 72 exits valve assembly at its outlet 73.
  • the air exiting the valve assembly housing is directed into the intake 22 of air oil separator 20.
  • the valve assembly outlet is coupled to air oil intake 22 by conduit 43.
  • all of the air entering the valve assembly at its intake 71 is ported to the air oil separator via conduit 43.
  • the entire fluid passage from the valve outlet to the separator intake can be referred to as fluid circulation conduit.
  • the volume of air passing through the fluid circulation conduit measured in cubic feet per minute, cfrn is equal to A-B where A is the capacity in cfrn of the blower and B is the volume of air being pulled from the crankcase.
  • A the capacity in cfrn of the blower
  • B the volume of air being pulled from the crankcase.
  • the volume traveling through the fluid circulation conduit and valve assembly 70, when the compressor is clean, is 25 cfrn. It is understood in the present example that when the air oil separator is saturated, the blower has a capacity of 45 cfin. There is still 30 cfin being removed from the crankcase. The volume passing through the fluid circulation conduit and valve assembly, however, declines to 15 cfin.
  • FIG. 4B shows the valve assembly at 15 cfin
  • FIG. 5C shows the valve assembly at 25 cfin.
  • the axial position of the valve 79, relative to the valve inlet 71 and outlet 73 changes as the cfin passing through the valve drops from 25 cfin to 15 cfin.
  • the change in the position of the valve 74 and the stepped interior of the valve housing 72 ensures that the drop in cfin does not cause a change in the negative pressure maintained in the fluid circulation conduit. Maintaining a constant pressure in the conduit helps ensure a constant pressure in the crankcase.
  • the pressure in the circulation conduit is negative.
  • the term pressure can refer to both a positive and a negative pressure. A negative pressure means there is a pressure drop.
  • the valve assembly structure includes the valve assembly housing 72.
  • the housing forms a chamber 74 through which air entering and exiting the valve assembly must pass.
  • the chamber is formed by a stepped internal surface of the housing.
  • the stepped internal surface forms chamber regions within the chamber.
  • Each of the chamber regions have internal diameters which differ from each other.
  • the shown housing has four chamber regions 74a-74d.
  • the first region 74a defines the housing inlet 71.
  • the first region has the largest diameter of the four regions.
  • a second region 74b, immediately adjacent the first, has a reduced diameter.
  • the diameter of the second region is the smallest of all the four regions.
  • a third chamber region 74c is adjacent the second region and axially spaced from the first region by the axial width of the second region.
  • the third region 74c has an internal diameter smaller than the first region and larger than the second.
  • a fourth region 74d, adjacent to the third region, is at the outlet 73 of valve assembly 70.
  • the fourth region has a larger diameter than the third region. Accordingly, the length of the diameters of each region are compared as follows: 74a > 74d > 74c > 74b.
  • the regions rather than being formed by steps could be formed by a gradual change, such as a slope.
  • the valve assembly has a valve support disposed in the chamber of the valve housing.
  • the support includes an open base 75 threadably secured into valve outlet 73.
  • a shaft 76 is press fit into center bore 75a of open base 75. The shaft extends axially upward from base 75 through the third and second regions and into the first region.
  • a compression spring 77 is disposed around shaft 76.
  • a valve is slidably coupled to the shaft through a central hole in the valve. The spring biases the valve upward away from the base of the shaft.
  • the valve assembly When the spring is in a non-compressed, resting state, the valve assembly is in the closed position as shown in FIG. 3A. The valve is generally in this position when there is 0 cfin passing through the valve assembly. In the closed position, the valve is at a point in the second chamber region which immediately adjoins the first chamber region. The valve is thus at the top of the second region.
  • the valve assembly also operates as a pressure relief valve to allow positive pressure which may build up in the crankcase, if the separator becomes fouled, to escape from the crankcase and exit through conduit 43, assembly 70, conduit 42 and onto exit at outlet 80. As shown in FIG. 3D when the air exits it pushes valve 79 up into the first chamber region 74a.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

La présente invention porte sur un ensemble soupape de régulation qui est en communication fluidique avec un carter de moteur et une source de vide. L'ensemble comprend un boîtier définissant une chambre de soupape. Une soupape de l'ensemble a une première position d'ouverture de soupape et une seconde position d'ouverture de soupape. La soupape dans la première position d'ouverture définit des premier et deuxième volumes. La soupape dans la seconde position d'ouverture définit des troisième et quatrième volumes. Le quatrième volume est inférieur au premier volume et le troisième volume est inférieur au deuxième volume.
PCT/US2009/067344 2009-01-30 2009-12-09 Ensemble soupape de régulation et appareil doté d'un ensemble soupape de régulation Ceased WO2010087901A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US14890909P 2009-01-30 2009-01-30
US61/148,909 2009-01-30

Publications (1)

Publication Number Publication Date
WO2010087901A1 true WO2010087901A1 (fr) 2010-08-05

Family

ID=42395927

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2009/067344 Ceased WO2010087901A1 (fr) 2009-01-30 2009-12-09 Ensemble soupape de régulation et appareil doté d'un ensemble soupape de régulation

Country Status (1)

Country Link
WO (1) WO2010087901A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550749A (en) * 1984-03-12 1985-11-05 C. R. Bard, Inc. Adjustable check valve
US5319949A (en) * 1992-06-22 1994-06-14 General Motors Corporation Regulator valve assembly for a torque converter
US5564401A (en) * 1995-07-21 1996-10-15 Diesel Research Inc. Crankcase emission control system
US6422224B1 (en) * 2000-11-02 2002-07-23 Walker Design, Inc. Remote air-oil separator
US6557536B2 (en) * 2000-05-24 2003-05-06 Parker-Hannifin Corporation Safety shut-off valve for crankcase emission control system

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4550749A (en) * 1984-03-12 1985-11-05 C. R. Bard, Inc. Adjustable check valve
US5319949A (en) * 1992-06-22 1994-06-14 General Motors Corporation Regulator valve assembly for a torque converter
US5564401A (en) * 1995-07-21 1996-10-15 Diesel Research Inc. Crankcase emission control system
US6557536B2 (en) * 2000-05-24 2003-05-06 Parker-Hannifin Corporation Safety shut-off valve for crankcase emission control system
US6422224B1 (en) * 2000-11-02 2002-07-23 Walker Design, Inc. Remote air-oil separator

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