JPS5713207A - Spring arrangement for inlet or exhaust valve of internal combustion engine - Google Patents

Spring arrangement for inlet or exhaust valve of internal combustion engine

Info

Publication number
JPS5713207A
JPS5713207A JP8805580A JP8805580A JPS5713207A JP S5713207 A JPS5713207 A JP S5713207A JP 8805580 A JP8805580 A JP 8805580A JP 8805580 A JP8805580 A JP 8805580A JP S5713207 A JPS5713207 A JP S5713207A
Authority
JP
Japan
Prior art keywords
engine
valve
spring
pressure
piston
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.)
Pending
Application number
JP8805580A
Other languages
Japanese (ja)
Inventor
Sakae Inoue
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.)
Daihatsu Motor Co Ltd
Original Assignee
Daihatsu Motor Co Ltd
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 Daihatsu Motor Co Ltd filed Critical Daihatsu Motor Co Ltd
Priority to JP8805580A priority Critical patent/JPS5713207A/en
Publication of JPS5713207A publication Critical patent/JPS5713207A/en
Pending 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
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462—Valve return spring arrangements

Landscapes

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

Abstract

PURPOSE: To reduce mechanical losses of an output power of an engine by utilizing the oil pressure of a lubricating oil pump which is driven to rotate by the engine so that the load of a spring of an inlet or exhaust valve may be automatically varied to increase or decrease in response to the rotational frequency of the engine.
CONSTITUTION: A cylinder 5 is concentrically provided on the top of a cylinder head 1 and has a piston 6 fitted therein. A spring 8 for urging a valve 2 to its normally closed position is disposed between the piston 6 and a spring receiving metal 7. Meanwhile, a pressure oil chamber 9 is provided in the rear of the cylinder head 1 and pressure oil from a lubricating oil pump 10 is introduced into the pressure oil chamber 9. With this construction, if the rotation of the engine is raised higher than the idle rotation, the pressure in the pressure oil chamber 9 is also raised and the piston 6 is caused to move upwardly in proportion to the rotational frequency of the engine so that the spring load to the valve 2 is also increased thereby. The amount of this increase of the spring load is set to a value equal to or greater than a value by which a force of inertia of a valve motion system increases in proportion to the rotational frequency of the engine, whereby jumps or bounds of the valve 2 can be assuredly prevented in the whole rotational area of the engine.
COPYRIGHT: (C)1982,JPO&Japio
JP8805580A 1980-06-27 1980-06-27 Spring arrangement for inlet or exhaust valve of internal combustion engine Pending JPS5713207A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8805580A JPS5713207A (en) 1980-06-27 1980-06-27 Spring arrangement for inlet or exhaust valve of internal combustion engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8805580A JPS5713207A (en) 1980-06-27 1980-06-27 Spring arrangement for inlet or exhaust valve of internal combustion engine

Publications (1)

Publication Number Publication Date
JPS5713207A true JPS5713207A (en) 1982-01-23

Family

ID=13932145

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8805580A Pending JPS5713207A (en) 1980-06-27 1980-06-27 Spring arrangement for inlet or exhaust valve of internal combustion engine

Country Status (1)

Country Link
JP (1) JPS5713207A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4615507A (en) * 1984-03-13 1986-10-07 Andre Rousset Spring return system for a component able to move reciprocally
JPH01321261A (en) * 1988-06-20 1989-12-27 Koyo Seiko Co Ltd Separator roller for spinning machine
JPH04217558A (en) * 1990-12-16 1992-08-07 Teijin Seiki Co Ltd Turning roller
DE4129637A1 (en) * 1991-09-06 1993-03-11 Schaeffler Waelzlager Kg DEVICE FOR CHANGING THE SPRING FORCE OF A VALVE SPRING
US5558054A (en) * 1995-06-07 1996-09-24 Southwest Research Institute Variable preload system for valve springs
DE102013203821A1 (en) * 2013-03-06 2014-09-11 Ford Global Technologies, Llc Friction Power Optimized Engine and Method of Operating Such Engine

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5253116A (en) * 1975-10-28 1977-04-28 Isuzu Motors Ltd Exhaust valve control device, internal combustion engine
JPS53125520A (en) * 1977-04-08 1978-11-01 Toyota Motor Corp Valve movement equipment for internal combustion engine

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5253116A (en) * 1975-10-28 1977-04-28 Isuzu Motors Ltd Exhaust valve control device, internal combustion engine
JPS53125520A (en) * 1977-04-08 1978-11-01 Toyota Motor Corp Valve movement equipment for internal combustion engine

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4615507A (en) * 1984-03-13 1986-10-07 Andre Rousset Spring return system for a component able to move reciprocally
JPH01321261A (en) * 1988-06-20 1989-12-27 Koyo Seiko Co Ltd Separator roller for spinning machine
JPH04217558A (en) * 1990-12-16 1992-08-07 Teijin Seiki Co Ltd Turning roller
DE4129637A1 (en) * 1991-09-06 1993-03-11 Schaeffler Waelzlager Kg DEVICE FOR CHANGING THE SPRING FORCE OF A VALVE SPRING
DE4129637C2 (en) * 1991-09-06 1998-04-09 Schaeffler Waelzlager Ohg Device for changing the spring force of a valve spring
US5558054A (en) * 1995-06-07 1996-09-24 Southwest Research Institute Variable preload system for valve springs
DE102013203821A1 (en) * 2013-03-06 2014-09-11 Ford Global Technologies, Llc Friction Power Optimized Engine and Method of Operating Such Engine

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