GB303031A - Improvements in hydraulic transmission gear, particularly applicable to valve gear for internal-combustion engines - Google Patents

Improvements in hydraulic transmission gear, particularly applicable to valve gear for internal-combustion engines

Info

Publication number
GB303031A
GB303031A GB38106/28A GB3810628A GB303031A GB 303031 A GB303031 A GB 303031A GB 38106/28 A GB38106/28 A GB 38106/28A GB 3810628 A GB3810628 A GB 3810628A GB 303031 A GB303031 A GB 303031A
Authority
GB
United Kingdom
Prior art keywords
reservoir
plunger
plungers
hydraulic transmission
valve
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
GB38106/28A
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.)
General Motors Research Corp
Original Assignee
General Motors Research 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 General Motors Research Corp filed Critical General Motors Research Corp
Publication of GB303031A publication Critical patent/GB303031A/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
    • 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
    • F01L9/11—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic in which the action of a cam is being transmitted to a valve by a liquid column
    • 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
    • F01L1/34—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift
    • F01L1/344—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear
    • F01L1/3442—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of means for changing the timing of the valves without changing the duration of opening and without affecting the magnitude of the valve lift changing the angular relationship between crankshaft and camshaft, e.g. using helicoidal gear using hydraulic chambers with variable volume to transmit the rotating force
    • F01L2001/34423—Details relating to the hydraulic feeding circuit
    • F01L2001/34446—Fluid accumulators for the feeding circuit

Abstract

303,031. General Motors Research Corporation, (Assignees of Almen, J. 0.). Dec. 24, 1927, [Convention date]. Hydraulic transmission of power.-In hydraulic transmission gear, particularly for the valve gear of internal-combustion engines. the hydraulic chamber extending between the working face of the operating member and the working face of the operated member is made sufficientlv small to ensure that the maximum volume of air admitted thereto due to contraction of the liquid on cooling shall be smaller than the displacement volume of the operating-member, so that such air does not materially affect the operation of the mechanism. Fig. 1 shows a cam-actuated plunger 14 connected to a valveactuating plunger 18, the hydraulic chamber 28 between the plungers having a volume about 3¢ times that of the displacement volume of the plunger 14. Oil is supplied to a reservoir 36 between the plungers, the chamber 28 being connected to the reservoir through a hollow plug 37 containing a non-return valve 42. A spring 54 fulcrumed at 56 keeps the plungers 14 and 18 pressed downwards. Surplus oil and air escape from the top of the reservoir by a pipe. In a modification, the tappet 20 bears against the upper end of the plunger 14, the plug 37 is omitted, and the valve 42 is arranged in the top of the reservoir.
GB38106/28A 1927-12-24 1928-12-24 Improvements in hydraulic transmission gear, particularly applicable to valve gear for internal-combustion engines Expired GB303031A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US303031XA 1927-12-24 1927-12-24

Publications (1)

Publication Number Publication Date
GB303031A true GB303031A (en) 1930-03-24

Family

ID=21853560

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38106/28A Expired GB303031A (en) 1927-12-24 1928-12-24 Improvements in hydraulic transmission gear, particularly applicable to valve gear for internal-combustion engines

Country Status (1)

Country Link
GB (1) GB303031A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556062A (en) * 1968-11-14 1971-01-19 Tecumseh Products Co Valve spring mechanism for internal combustion engines
US4887562A (en) * 1988-09-28 1989-12-19 Siemens-Bendix Automotive Electronics L.P. Modular, self-contained hydraulic valve timing systems for internal combustion engines
WO2012094142A1 (en) * 2011-01-05 2012-07-12 Chrysler Group Llc Cylinder head cover module with integrated valve train
GB2559401A (en) * 2017-02-06 2018-08-08 Jaguar Land Rover Ltd Apparatus and method for a hydraulic valvetrain system

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3556062A (en) * 1968-11-14 1971-01-19 Tecumseh Products Co Valve spring mechanism for internal combustion engines
US4887562A (en) * 1988-09-28 1989-12-19 Siemens-Bendix Automotive Electronics L.P. Modular, self-contained hydraulic valve timing systems for internal combustion engines
WO2012094142A1 (en) * 2011-01-05 2012-07-12 Chrysler Group Llc Cylinder head cover module with integrated valve train
CN103328798A (en) * 2011-01-05 2013-09-25 克莱斯勒集团有限责任公司 Cylinder head cover module with integrated valve train
US8833321B2 (en) 2011-01-05 2014-09-16 Chrysler Group Llc Cylinder head cover module with integrated valve train
CN103328798B (en) * 2011-01-05 2015-12-16 克莱斯勒集团有限责任公司 There is the cylinder head cover module of integrated valve train
GB2559401A (en) * 2017-02-06 2018-08-08 Jaguar Land Rover Ltd Apparatus and method for a hydraulic valvetrain system
GB2559401B (en) * 2017-02-06 2020-02-19 Jaguar Land Rover Ltd Apparatus and method for a hydraulic valvetrain system
US10961877B2 (en) 2017-02-06 2021-03-30 Jaguar Land Rover Limited Apparatus and method for a hydraulic valvetrain system

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