WO2018164878A1 - Ensemble à jets de refroidissement de piston - Google Patents

Ensemble à jets de refroidissement de piston Download PDF

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Publication number
WO2018164878A1
WO2018164878A1 PCT/US2018/019865 US2018019865W WO2018164878A1 WO 2018164878 A1 WO2018164878 A1 WO 2018164878A1 US 2018019865 W US2018019865 W US 2018019865W WO 2018164878 A1 WO2018164878 A1 WO 2018164878A1
Authority
WO
WIPO (PCT)
Prior art keywords
piston cooling
cooling jet
jet assembly
base
wing
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/US2018/019865
Other languages
English (en)
Inventor
Mark T. SOLHEIM
Tyler L. TERRELL
Joseph KUHN
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.)
Illinois Tool Works Inc
Original Assignee
Illinois Tool Works Inc
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 Illinois Tool Works Inc filed Critical Illinois Tool Works Inc
Publication of WO2018164878A1 publication Critical patent/WO2018164878A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
    • F01P3/00—Liquid cooling
    • F01P3/06—Arrangements for cooling pistons
    • F01P3/08—Cooling of piston exterior only, e.g. by jets
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means

Definitions

  • Embodiments of the present disclosure generally relate to piston cooling jets for engines.
  • Piston cooling jets may be mounted to an engine crankcase proximate to a crankshaft. Each piston cooling jet may be fastened to the crankcase with a banjo bolt. The banjo bolt extends into an oil chamber in the crankcase, thereby allowing pressurized oil to flow into the piston cooling jet and spray upwards onto a bottom side of a piston during engine operation. Such cooling is often used with high compression and/or turbocharged engines.
  • Figure 1 illustrates a known piston cooling jet 10. As shown, the piston cooling jet 10 is a unitary piece of metal. It has been found that forming the piston cooling jet is expensive, due to the cost of the material for the metal component. Further, machining operations used to drill small channels in nozzles of the piston cooling jet are complex.
  • a piston cooling jet assembly that includes a base manifold and nozzle caps.
  • the base manifold includes wings and a base, with each wing having a base end and a free end that extends a distance away from the base.
  • the nozzle caps are formed as individual cap bodies. Each nozzle cap is operably coupled with the free end of each wing.
  • the base manifold and the nozzle caps form one or more passages inside the piston cooling jet assembly to direct fluid through the piston cooling jet assembly and out of the piston cooling jet assembly in a direction towards a spray target.
  • the piston cooling jet assembly also includes a compression limiter that is retained within the base of the base manifold.
  • the compression limiter may be removably secured to the base manifold.
  • the base manifold, the nozzle caps, and the compression limiter form the one or more passages inside the piston cooling jet assembly.
  • One or more of the base manifold, the nozzle caps, or the compression limiter may be formed of plastic.
  • One or more of the nozzle caps may be retrofitted to the base manifold.
  • Each of the nozzle caps also include an inlet passage and an outlet passage.
  • the inlet passage is elongated along and encompasses an inlet axis that extends in a first direction.
  • the outlet passage is elongated and encompasses an outlet axis that extends in different, second direction.
  • the inlet passage is also fluidly coupled with the outlet passage.
  • the nozzle caps are also configured to direct the fluid out of the piston cooling jet assembly through the outlet passage of each nozzle cap in a direction away from the piston cooling jet assembly.
  • Each of the wings also includes a wing passage that is elongated along and encompasses a wing axis that extends in a third direction.
  • the inlet axis and the wing axis are parallel, and the outlet axis and the wing axis are not parallel.
  • Each wing is also configured to direct the fluid through the wing passage to each nozzle cap.
  • One or more of the nozzle caps may be ultrasonically welded to the base manifold.
  • Each of the nozzle caps may be removably coupled to the base manifold.
  • Figure 1 illustrates a known piston cooling jet.
  • Figure 2 illustrates a top perspective view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Figure 3 illustrates a bottom perspective bottom view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Figure 4 illustrates a perspective bottom exploded view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Figure 5 illustrates a perspective side view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Figure 6 illustrates a perspective side view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Figure 7 illustrates a perspective side view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Figure 8 illustrates a cross-sectional view of a nozzle cap, according to an embodiment of the present disclosure.
  • Figure 9 illustrates a cross-sectional view of a base manifold, according to an embodiment of the present disclosure.
  • Figure 10 illustrates ultrasonic weld joints that secure nozzle caps to a base manifold, according to an embodiment of the present disclosure.
  • Figure 11 illustrates a perspective view of a nozzle cap, according to an embodiment of the present disclosure.
  • Figure 12 illustrates a bottom perspective view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Figure 13 illustrates a partial perspective translucent view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Figure 14 illustrates a partial perspective exploded view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Figure 15 illustrates a partial cross-sectional exploded view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Figure 16 illustrates a cross-sectional view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Figure 17 illustrates a partial cross-sectional view of a piston cooling jet assembly, according to an embodiment of the present disclosure.
  • Embodiments of the present disclosure provide a piston cooling jet assembly that includes a base manifold, one or more nozzle caps, and optionally, a compression limiter secured to the base manifold.
  • the piston cooling jet assembly may be fastened to a crankcase and configured to allow pressurized oil to flow through the piston cooling jet assembly and out of the piston cooling jet assembly in a direction towards a spray target.
  • the piston cooling jet assembly provides a modular assembly that allows internal passages to be efficiently formed in the nozzle caps and the base manifold. Additionally, the modular assembly of the piston cooling jet assembly may provide for various different configurations and orientations of outlet nozzles of the one or more nozzle caps.
  • the base manifold, nozzle caps, and compression limiter may all be coupled together (such as through press-fit connections, welded joints, or the like) to form the piston cooling jet assembly that allows for various spray patterns and/or spray target locations.
  • Figure 2 illustrates a top perspective view of a piston cooling jet assembly 100, according to an embodiment of the present disclosure.
  • Figure 3 illustrates a bottom perspective bottom view of the piston cooling jet assembly 100, according to an embodiment of the present disclosure.
  • Figure 4 illustrates a perspective bottom exploded view of the piston cooling jet assembly 100, according to an embodiment of the present disclosure.
  • the base 106 may include a mating surface 132 that extends into the central passage 123.
  • the base 106 also includes a notch 136 that extends into the central passage 123.
  • the compression limiter 120 includes a body 124 and a lip 125 that extends a distance away from the body 124.
  • the lip 125 includes a mating surface 128 that is configured to mate with the mating surface 132 of the base 106 when the compression limiter 120 is secured inside the central passage 123 of the base manifold 102. Additionally, the lip 125 of the compression limiter 120 includes a notch 134 that protrudes into the lip 125.
  • the notch 134 of the compression limiter 120 is sized and shaped to receive the notch 136 of the base manifold 102, such that the notches 134, 136 align and orient the compression limiter 120 inside the central passage 123 of the base manifold 102.
  • the compression limiter 120 removably secures to the central passage 123 of the base manifold 102, such as by a press-fit connection, a snapable connection, or the like.
  • the compression limiter 120 may secure to the base manifold 102 by a non-removable means, such as by welding.
  • the nozzle caps 104 are formed as individual cap bodies. Each of the nozzle caps 104 include a mating end 142 and a free end 144. The mating ends 142 of the nozzle caps 104 are operably coupled with the free ends 112 of the wings 108. Each of the nozzle caps 104 also includes an outlet end 154.
  • fluid e.g., pressurized oil
  • the fluid may be directed towards one or more spray targets.
  • the piston cooling jet assembly 100 provides a modular assembly that allows for various different configurations and orientations of outlet nozzles.
  • the components of the piston cooling jet assembly 100 may be formed of plastic, thereby reducing overall mass and cost.
  • the base manifold 102 may be formed of metal, while the other components are formed of plastic. Alternatively, at least two or more of the components may be formed of metal.
  • FIG. 5 illustrates a perspective side view of the piston cooling jet assembly 100, according to an embodiment of the present disclosure. As shown in Figure 5, a longer nozzle cap 504, relative to the nozzle cap 104 of Figure 2, may be used.
  • Figure 6 illustrates a perspective side view of the piston cooling jet assembly 100, according to an embodiment of the present disclosure.
  • a nozzle cap 604 has an outlet angle 610 that is different than an outlet angle of the nozzle cap 104 of Figure 2.
  • the outlet angle 610 between an inlet axis 612 and an outlet axis 614 of the nozzle cap 604 is substantially 90 degrees.
  • the outlet angle of the nozzle cap 104 illustrated in Figure 2 is greater than 90 degrees.
  • the outlet angle may have any angular value.
  • the different outlet angle 610 may be used in order to change a target spray location of the fluid that is directed out of the nozzle cap 604 in a direction away from the piston cooling jet assembly 100.
  • the two nozzle caps 504 of Figure 5 are illustrated as both having substantially the same distances 502 between the mating ends 542 and the free ends 544 that are greater than the distance between the mating ends 142 and the free ends 144 of the nozzle caps 104 of Figure 4.
  • the two nozzle caps 604 of Figure 6 both have substantially the same outlet angle
  • the two nozzle caps 704 of Figure 7 are illustrated as both having the same rotated configuration.
  • one or more of the nozzle caps of the piston cooling jet assembly 100 may have any uniform and/or unique configuration.
  • a first nozzle cap may extend a first distance 502, and a different, second nozzle cap may extend a second distance that is different than the first distance 502 (not shown).
  • one or more of the nozzle caps may have any orientations, lengths, and/or outlet angle that is unique to or substantially the same as the orientation, length, and/or outlet angle of any other nozzle cap.
  • Figure 8 illustrates a cross-sectional view of a Section 8-8 of the nozzle cap 104 of Figure 4, according to an embodiment of the present disclosure.
  • the nozzle cap 104 includes an inlet passage 140 and an outlet passage 150.
  • the inlet passage 140 is elongated along and encompasses an inlet axis 240 that extends in a first direction 242.
  • the inlet passage 140 is an open passage that is open at the mating end 142 of the cap 104 and extends in a direction towards the free end 144.
  • the outlet passage 150 is elongated along and encompasses an outlet axis 250 that extends in a second direction 252.
  • the outlet passage 150 is an open passage that is open at the outlet end 154 of the cap 104.
  • the inlet passage 140 is fluidly coupled with the outlet passage 150.
  • the fluid is directed into the inlet passage 140 from the base manifold 102, and directed out of the nozzle cap 104 through the outlet passage 150.
  • the nozzle caps 104 may include two or more inlet passages 140 and/or two or more outlet passages 150 that may direct fluid in any direction out of and away from the piston cooling jet assembly 100.
  • the nozzle cap 104 includes an outlet angle 810 between the inlet axis 240 and the outlet axis 250. As illustrated and described with Figure 6, the outlet angle 810 may have any angular value in order to direct the fluid in a direction towards a target spray location.
  • FIG. 9 illustrates a cross-sectional view of a Section 9-9 of the base manifold 102 of Figure 4, according to an embodiment of the present disclosure.
  • Each of the wings 108 include a wing passage 148 that is elongated along and encompasses a wing axis 248 of each wing and extend in a third direction 254.
  • the wing passage 148 is an open passage that is open at and extends between the base end 110 and the free end 112 of each of the wings 108.
  • the wing passage 148 is fluidly coupled with the inlet passage 140 of the nozzle cap 104 when the nozzle cap 104 is coupled with the base manifold 102.
  • the fluid is directed into each of the wing passages 148 from the passages 122 of the compression limiter 120, directed into the inlet passage 140 of the nozzle cap 104, and directed out of the nozzle cap 104 through the outlet passage 150.
  • the multi-piece design of the piston cooling jet assembly 100 allows for plural internal passages to be efficiently formed in each of the nozzle caps 104 and the base manifold 102.
  • the plural internal passages may have orientations or configurations other than shown.
  • the wing axis 248 of each wing 108 and the inlet axis 240 of each nozzle cap 104 may be substantially parallel. Additionally, the wing axis 248 of each wing 108 and the outlet axis 250 of each nozzle cap 104 may not be parallel.
  • the wing axis 248 and the inlet axis 240 may not be parallel, the wing axis 248 and the outlet axis 250 may be substantially perpendicular, or the wing axis 248 and the outlet axis 250 may not be perpendicular.
  • FIG 11 illustrates a perspective view of a nozzle cap 1104, according to an embodiment of the present disclosure.
  • the nozzle cap 1104 may include an ultrasonic weld feature 1112 at a mating end 1142 of the cap 1104.
  • the ultrasonic weld feature 1112 includes a recessed 1114 "tongue and groove" weld feature that is configured to contain ultrasonic weld melt flow.
  • the recess 1114 prevents undesired material from flowing into an inlet passage 1140 during a welding process.
  • the tongue and groove feature on the nozzle cap 1104 may be flat at the bottom.
  • An arm of the base manifold may include an annular energy director having a triangular profile (not shown).
  • the triangular energy director may be consumed during the ultrasonic welding process.
  • the material of the energy director may form filler material during the welding process.
  • Figure 12 illustrates a bottom perspective view of a piston cooling jet assembly 1200, according to an embodiment of the present disclosure.
  • Figure 13 illustrates a partial perspective translucent view of the piston cooling jet assembly 1200, according to an embodiment of the present disclosure.
  • Figure 14 illustrates a partial perspective exploded view of the piston cooling jet assembly 1200, according to an embodiment of the present disclosure.
  • Figure 15 illustrates a partial cross-sectional exploded view of the piston cooling jet assembly 1200, according to an embodiment of the present disclosure.
  • the piston cooling jet assembly 1200 includes a base manifold 1202, nozzle caps 1204, and, optionally, a compression limiter 1220 secured within a central passage 1223 of the base manifold 1202.
  • Each of the nozzle caps 1204 includes a cap alignment feature 1260 at a mating end 1242 of each cap 1204.
  • the cap alignment feature 1260 extends a distance away from the mating end 1242 of each cap 1204.
  • each wing 1208 of the base manifold 1202 includes a wing alignment feature 1258 that is shaped and sized in order to receive the cap alignment feature 1260 inside the wing alignment feature 1258.
  • the cap and the wing alignment features 1260, 1258 are hexagonal, however the alignment features 1260, 1258 may be any alternative shape.
  • the wing alignment feature 1258 may extend a distance away from the free end 1212 of the wing, and the cap alignment feature 1260 may receive the wing alignment feature 1258 inside the mating end 1242 of the cap 1204.
  • the nozzle caps 1204 removably secure to the free ends 1212 of the wings 1208 of the base manifold 1202, such as by a press-fit connection, a snapable connection, or the like.
  • new or different nozzle caps 1204 may be retrofitted to the base manifold 1202 after the base manifold 1202 has been used in order to replace different nozzle caps 104.
  • one or more nozzle caps having varying orientations, lengths, and/or outlet angles may be removably coupled with the base manifold 1202 in order to direct the fluid out of the base manifold 1202 and in a direction towards a spray target.
  • the nozzle caps 1204 may secure to the base manifold 1202 by a non-removable means, such as by ultrasonic welding, or the like.
  • An inlet passage 1240 extends through the alignment feature 1260 through the nozzle cap 1204 such that the fluid may be directed out of the base manifold 1202 through a wing passage 1248 and into the inlet passage 1240 of the nozzle cap 1204.
  • Figure 16 illustrates a cross-sectional view of the piston cooling jet assembly 100, according to an embodiment of the present disclosure.
  • Figure 17 illustrates a partial cross-sectional view of the piston cooling jet assembly 100, according to an embodiment of the present disclosure. It has been found that as a nozzle outlet length 1702 of the outlet passage 150 increases, a spray pattern narrows. Conversely, a shorter nozzle outlet length 1702 produces a wider spray pattern. By varying the length of the outlet passage 150, various spray patterns may be achieved.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Nozzles (AREA)

Abstract

La présente invention concerne un ensemble à jets de refroidissement de piston, comprenant des capuchons de buses et un collecteur à embase. Le collecteur à embase comprend des branches et une embase, chaque branche possédant une extrémité d'embase et une extrémité libre qui s'étend sur une certaine distance à l'écart de l'embase. Les capuchons de buses sont formés comme des corps de capuchons individuels. Chaque capuchon de buse est couplé fonctionnellement à l'extrémité libre de chaque branche. Le collecteur à embase et les capuchons de buses forment un ou plusieurs passages à l'intérieur de l'ensemble à jets de refroidissement de piston pour diriger du fluide à travers l'ensemble à jets de refroidissement de piston et hors de l'ensemble à jets de refroidissement de piston en direction d'une cible de pulvérisation.
PCT/US2018/019865 2017-03-07 2018-02-27 Ensemble à jets de refroidissement de piston Ceased WO2018164878A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201762468042P 2017-03-07 2017-03-07
US62/468,042 2017-03-07

Publications (1)

Publication Number Publication Date
WO2018164878A1 true WO2018164878A1 (fr) 2018-09-13

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD921044S1 (en) * 2019-08-02 2021-06-01 Transportation Ip Holdings, Llc Piston cooling apparatus
USD928201S1 (en) * 2019-08-02 2021-08-17 Transportation Ip Holdings, Llc Piston cooling apparatus
WO2021214411A1 (fr) * 2020-04-22 2021-10-28 Bontaz Centre R & D Gicleur de refroidissement de piston double jet en materiau plastique

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788773A (en) * 1954-08-27 1957-04-16 Maschf Augsburg Nuernberg Ag Regulation of the piston temperature in internal combustion engines
GB1309983A (en) * 1970-06-02 1973-03-14 Tatra Np Devices for spraying oil on pistons of piston engines
US20040040520A1 (en) * 2002-09-02 2004-03-04 Christophe Bontaz Multiple spray engine cooling nozzle and engines equipped with such nozzles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2788773A (en) * 1954-08-27 1957-04-16 Maschf Augsburg Nuernberg Ag Regulation of the piston temperature in internal combustion engines
GB1309983A (en) * 1970-06-02 1973-03-14 Tatra Np Devices for spraying oil on pistons of piston engines
US20040040520A1 (en) * 2002-09-02 2004-03-04 Christophe Bontaz Multiple spray engine cooling nozzle and engines equipped with such nozzles

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USD921044S1 (en) * 2019-08-02 2021-06-01 Transportation Ip Holdings, Llc Piston cooling apparatus
USD928201S1 (en) * 2019-08-02 2021-08-17 Transportation Ip Holdings, Llc Piston cooling apparatus
WO2021214411A1 (fr) * 2020-04-22 2021-10-28 Bontaz Centre R & D Gicleur de refroidissement de piston double jet en materiau plastique
FR3109608A1 (fr) * 2020-04-22 2021-10-29 Bontaz Centre R & D Gicleur de refroidissement de piston double jet en materiau plastique
FR3114126A1 (fr) * 2020-04-22 2022-03-18 Bontaz Centre R & D Gicleur de refroidissement de piston double jet en materiau plastique
CN115667685A (zh) * 2020-04-22 2023-01-31 邦达研发中心 塑料材料制成的双喷射流活塞冷却喷嘴
US11920502B2 (en) 2020-04-22 2024-03-05 Bontaz Centre Twin-jet piston cooling nozzle made of plastic material
CN115667685B (zh) * 2020-04-22 2026-01-13 邦达中心 塑料材料制成的双喷射流活塞冷却喷嘴

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