GB686362A - Improvements relating to arrangements for automatically taking up clearance in valve-control gear, particularly in internal combustion engines - Google Patents

Improvements relating to arrangements for automatically taking up clearance in valve-control gear, particularly in internal combustion engines

Info

Publication number
GB686362A
GB686362A GB1297351A GB1297351A GB686362A GB 686362 A GB686362 A GB 686362A GB 1297351 A GB1297351 A GB 1297351A GB 1297351 A GB1297351 A GB 1297351A GB 686362 A GB686362 A GB 686362A
Authority
GB
United Kingdom
Prior art keywords
piston
valve
clearance
port
lubricant
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.)
Expired
Application number
GB1297351A
Inventor
Friedrich Nallinger
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to GB1297351A priority Critical patent/GB686362A/en
Publication of GB686362A publication Critical patent/GB686362A/en
Expired 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
    • F01L13/0021—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of rocker arm ratio
    • F01L13/0026—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque by modification of rocker arm ratio by means of an eccentric
    • 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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • F01L1/2405—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically by means of a hydraulic adjusting device located between the cylinder head and rocker arm

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

686,362. Valve gear. DAIMLER-BENZ AKT.- GES. May 31, 1951, No. 12973/51. Class 7 (vi). Valve rockers 8 are mounted on,eccentric shafts or bearing bushes 10, Fig. 1, which are rotable to eliminate clearance by means of a piston. 16 acted upon on one side by lubricant under pressure supplied through a pipe 18 past a non-return valve 17 and on the other side by a restoring spring 19. A small amount of lubricant escapes past the piston 16 to permit return of the piston under the force of the spring 19 when the ,engine cools, and the piston 16 is preferably made of a material, e.g. a light metal or bronze alloy, of higher coefficient of thermal expansion than the cylinder, which is preferably of cast iron. in order to reduce the clearance between the piston and cylinder as the temperature increases. In Fig. 3 the rockers 8 are mounted on a shaft 30 having eccentric journals 31 and rotatably-adjusted by a piston 16 acted upon bv pressurised lubricant sumpplied through a port 18. and escaping through a port 32 controlled by a conical plug 34 having, a screwed end 35 and actuated by a bimetallic coil 38. As the temperature rises the coil 38 rotates the plug 34 to close the port 32 to compensate for the reduction in viscosity of the oil.
GB1297351A 1951-05-31 1951-05-31 Improvements relating to arrangements for automatically taking up clearance in valve-control gear, particularly in internal combustion engines Expired GB686362A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1297351A GB686362A (en) 1951-05-31 1951-05-31 Improvements relating to arrangements for automatically taking up clearance in valve-control gear, particularly in internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1297351A GB686362A (en) 1951-05-31 1951-05-31 Improvements relating to arrangements for automatically taking up clearance in valve-control gear, particularly in internal combustion engines

Publications (1)

Publication Number Publication Date
GB686362A true GB686362A (en) 1953-01-21

Family

ID=10014493

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1297351A Expired GB686362A (en) 1951-05-31 1951-05-31 Improvements relating to arrangements for automatically taking up clearance in valve-control gear, particularly in internal combustion engines

Country Status (1)

Country Link
GB (1) GB686362A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3061929A4 (en) * 2013-10-25 2017-06-14 Yanmar Co., Ltd. Variable valve timing mechanism and engine with variable valve timing mechanism

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3061929A4 (en) * 2013-10-25 2017-06-14 Yanmar Co., Ltd. Variable valve timing mechanism and engine with variable valve timing mechanism
US10072540B2 (en) 2013-10-25 2018-09-11 Yanmar Co., Ltd. Variable valve timing mechanism and engine with variable valve timing mechanism

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