WO2010050701A3 - Damping apparatus for exhaust valve for preventing cavitation in hydraulic exhaust valve-driving apparatus of large diesel engine - Google Patents

Damping apparatus for exhaust valve for preventing cavitation in hydraulic exhaust valve-driving apparatus of large diesel engine Download PDF

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Publication number
WO2010050701A3
WO2010050701A3 PCT/KR2009/006140 KR2009006140W WO2010050701A3 WO 2010050701 A3 WO2010050701 A3 WO 2010050701A3 KR 2009006140 W KR2009006140 W KR 2009006140W WO 2010050701 A3 WO2010050701 A3 WO 2010050701A3
Authority
WO
WIPO (PCT)
Prior art keywords
exhaust valve
damper
flow channel
preventing cavitation
damping apparatus
Prior art date
Application number
PCT/KR2009/006140
Other languages
French (fr)
Korean (ko)
Other versions
WO2010050701A2 (en
Inventor
김동훈
류승협
배종국
김훈석
김주태
Original Assignee
현대중공업 주식회사
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 현대중공업 주식회사 filed Critical 현대중공업 주식회사
Publication of WO2010050701A2 publication Critical patent/WO2010050701A2/en
Publication of WO2010050701A3 publication Critical patent/WO2010050701A3/en

Links

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
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • 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
    • F01L1/02—Valve drive
    • F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
    • F01L1/08—Shape of cams
    • 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
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/03—Reducing vibration
    • 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
    • F01L2810/00—Arrangements solving specific problems in relation with valve gears
    • F01L2810/04—Reducing noise

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Details Of Valves (AREA)
  • Safety Valves (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The present invention relates to a damping apparatus for an exhaust valve for preventing cavitation in a hydraulic exhaust valve-driving apparatus of a large diesel engine. The objective of the present invention is to provide a damping apparatus for an exhaust valve for preventing cavitation in a damper cylinder during the opening of an exhaust valve, and thus preventing noise, vibration, and erosion caused by cavitation, by having a check valve arranged in a damper piston of the large engine to enable hydraulic oil to easily flow into the damper cylinder. The present invention has a technical ideal in that the damping apparatus having the damper piston and the damper cylinder comprises: a horizontal flow channel (1) opened through both sides of the interior of the damper piston to enable the inflow of hydraulic oil; a vertical flow channel (2) penetrating from the horizontal flow channel (1) to the bottom surface of the damper piston; and a check valve (3) mounted on a certain point of the vertical flow channel such that the check valve (3) opens downwardly by a pressure difference, thereby enabling hydraulic oil to flow into the damper cylinder and thus preventing cavitation.
PCT/KR2009/006140 2008-10-27 2009-10-22 Damping apparatus for exhaust valve for preventing cavitation in hydraulic exhaust valve-driving apparatus of large diesel engine WO2010050701A2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2008-0105084 2008-10-27
KR1020080105084A KR20100046307A (en) 2008-10-27 2008-10-27 Damping apparatus for the exhaust valve to prevent cavitation phenomena at the hydraulic exhaust valve actuating equipment of large diesel engine

Publications (2)

Publication Number Publication Date
WO2010050701A2 WO2010050701A2 (en) 2010-05-06
WO2010050701A3 true WO2010050701A3 (en) 2010-08-05

Family

ID=42129428

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2009/006140 WO2010050701A2 (en) 2008-10-27 2009-10-22 Damping apparatus for exhaust valve for preventing cavitation in hydraulic exhaust valve-driving apparatus of large diesel engine

Country Status (2)

Country Link
KR (1) KR20100046307A (en)
WO (1) WO2010050701A2 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6085208A (en) * 1983-10-14 1985-05-14 Mitsubishi Heavy Ind Ltd Hydraulic valve driving device
JPS63183405U (en) * 1987-05-19 1988-11-25
KR19980064309U (en) * 1997-04-28 1998-11-25 김영귀 Cracking Pressure Adjustment Nut on Check Valve
JPH1122432A (en) * 1997-07-03 1999-01-26 Nippon Soken Inc Solenoid valve driving device

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6085208A (en) * 1983-10-14 1985-05-14 Mitsubishi Heavy Ind Ltd Hydraulic valve driving device
JPS63183405U (en) * 1987-05-19 1988-11-25
KR19980064309U (en) * 1997-04-28 1998-11-25 김영귀 Cracking Pressure Adjustment Nut on Check Valve
JPH1122432A (en) * 1997-07-03 1999-01-26 Nippon Soken Inc Solenoid valve driving device

Also Published As

Publication number Publication date
WO2010050701A2 (en) 2010-05-06
KR20100046307A (en) 2010-05-07

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