JPS5634913A - Hydraulic valve lift device - Google Patents

Hydraulic valve lift device

Info

Publication number
JPS5634913A
JPS5634913A JP10951079A JP10951079A JPS5634913A JP S5634913 A JPS5634913 A JP S5634913A JP 10951079 A JP10951079 A JP 10951079A JP 10951079 A JP10951079 A JP 10951079A JP S5634913 A JPS5634913 A JP S5634913A
Authority
JP
Japan
Prior art keywords
oil
lift
valve
plunger
intake
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.)
Granted
Application number
JP10951079A
Other languages
Japanese (ja)
Other versions
JPS6244088B2 (en
Inventor
Toru Kosuda
Yasuhiro Takeuchi
Noboru Matsubara
Masaaki Takizawa
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.)
Toyota Motor Corp
Soken Inc
Original Assignee
Nippon Soken Inc
Toyota Motor Corp
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 Nippon Soken Inc, Toyota Motor Corp filed Critical Nippon Soken Inc
Priority to JP10951079A priority Critical patent/JPS5634913A/en
Priority to US06/178,285 priority patent/US4408580A/en
Publication of JPS5634913A publication Critical patent/JPS5634913A/en
Priority to US06/474,055 priority patent/US4452187A/en
Publication of JPS6244088B2 publication Critical patent/JPS6244088B2/ja
Granted legal-status Critical Current

Links

Landscapes

  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

PURPOSE: To reduce an impulsive force at the time of seating of the intake/exhaust valves of an engine having a lift device wherein the lift of the valve can be changed, by providing a relief valve which is controlled by the slit of a plunger and the temperature of oil.
CONSTITUTION: A lift device comprises a lift body 5 having an oil pressure chamber 26 and a plunger 6 for opening/closing an intake/exhaust valve 25. Oil escapes from the oil pressure chamber 26 through an orifice 27 depending on the rotational frequency of a cam 1a to change the lift of the plunger 6 to alter the lift of the intake/exhaust valve 25. As a result, a braking force is applied at the time of seating of the valve to reduce an impulsive force. Since the set pressure of a relief valve 43 is controlled depending on the temperature of the oil, smooth braking is effected in a range from the low temperature of the oil to its high temperature.
COPYRIGHT: (C)1981,JPO&Japio
JP10951079A 1979-08-24 1979-08-28 Hydraulic valve lift device Granted JPS5634913A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP10951079A JPS5634913A (en) 1979-08-28 1979-08-28 Hydraulic valve lift device
US06/178,285 US4408580A (en) 1979-08-24 1980-08-15 Hydraulic valve lift device
US06/474,055 US4452187A (en) 1979-08-24 1983-03-10 Hydraulic valve lift device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10951079A JPS5634913A (en) 1979-08-28 1979-08-28 Hydraulic valve lift device

Publications (2)

Publication Number Publication Date
JPS5634913A true JPS5634913A (en) 1981-04-07
JPS6244088B2 JPS6244088B2 (en) 1987-09-18

Family

ID=14512085

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10951079A Granted JPS5634913A (en) 1979-08-24 1979-08-28 Hydraulic valve lift device

Country Status (1)

Country Link
JP (1) JPS5634913A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62708U (en) * 1985-06-19 1987-01-06

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62708U (en) * 1985-06-19 1987-01-06
JPH0455205Y2 (en) * 1985-06-19 1992-12-25

Also Published As

Publication number Publication date
JPS6244088B2 (en) 1987-09-18

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