GB518581A - Improvements in and relating to internal combustion engines - Google Patents

Improvements in and relating to internal combustion engines

Info

Publication number
GB518581A
GB518581A GB25805/38A GB2580538A GB518581A GB 518581 A GB518581 A GB 518581A GB 25805/38 A GB25805/38 A GB 25805/38A GB 2580538 A GB2580538 A GB 2580538A GB 518581 A GB518581 A GB 518581A
Authority
GB
United Kingdom
Prior art keywords
valve
pump
governor
engine
acting
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
GB25805/38A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB518581A publication Critical patent/GB518581A/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
    • 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
    • F01L1/34403—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 helically teethed sleeve or gear moving axially between crankshaft and camshaft

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Control Of Transmission Device (AREA)

Abstract

518,581. Fluid-pressure servomotor-control systems. PORSCHE, F. Aug. 26, 1938, No. 25085. Convention date, Sept. 18, 1937. [Class 135] [Also in group XXIV] The valve timing of an internal combustion engine is varied by altering the relative positions of two parts of the valve control shaft by means of a hydraulic or pneumatic motor controlled directly or indirectly in accordance with the speed of the engine and the position of the engine throttle valve. In the arrangement shown in Fig. 2 a double-acting annular piston 45 is connected by a ball-bearing 44 with a coupling member 13 having a steep pitched screw-threaded engagement with a shaft connected by bevel wheels 8, 9 with the crank shaft 7 and connected by vertical splines with a bevel wheel 11 meshing with a bevel wheel 12 on the valve timing shaft 6. A control valve 59 is influenced by the vacuum in the intake manifold 74, the latter raising a spring-loaded piston 71 connected to the control valve by levers 64, 61 of which the former 64 has an adjustable fulcrum 67 whilst the pivotal connection 63 between the levers moves between adjustable stops 65, 66. The control valve has follow-up mechanism comprising the lever 61 and a rod 62 connected to the coupling at 70. The feed pump has a bye-pass relief valve 22. In a modification the coupling is actuated by a single-acting spring loaded piston acting through a lever and under the control of a governor pump, the suction and delivery sides of the pump being connected through a bye-pass passage controlled by a throttle valve linked to the accelerator pedal. The Specification as open to inspection under Sect. 91 comprises also a modification in which the engine lubricating pump is connected with a power cylinder, the piston of which actuates the coupling. A bye-pass conduit connecting the suction and delivery sides of the pump is fitted with a slide valve controlled by an enginedriven centrifugal governor acting through a lever. The arrangement is such that the timing is advanced as the engine speed increases and the characteristic of the governor may be such as to produce first a rapid advance followed by a more gradual advance as the speed increases. The centrifugal governor may be replaced by a governor pump or by an electric generator. This subject-matter does not appear in the Specification as accepted.
GB25805/38A 1937-09-18 1938-08-26 Improvements in and relating to internal combustion engines Expired GB518581A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE841419X 1937-09-18

Publications (1)

Publication Number Publication Date
GB518581A true GB518581A (en) 1940-03-01

Family

ID=6766683

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25805/38A Expired GB518581A (en) 1937-09-18 1938-08-26 Improvements in and relating to internal combustion engines

Country Status (2)

Country Link
FR (1) FR841419A (en)
GB (1) GB518581A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2005047658A1 (en) * 2003-11-08 2005-05-26 Ina-Schaeffler Kg Adjustment device for adjusting the relative rotational angle position of a camshaft in relation to a crankshaft of an internal combustion engine
EP1538307A1 (en) * 1999-11-25 2005-06-08 Toyota Jidosha Kabushiki Kaisha Internal combustion engine having a variable valve train

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE750784C (en) * 1941-11-25 1945-01-26 Lube oil pressure regulation for compressor aircraft engines
JPH04171205A (en) * 1990-10-31 1992-06-18 Atsugi Unisia Corp Valve timing control device for internal combustion engine
DE4311264C2 (en) * 1993-04-06 2002-08-29 Bosch Gmbh Robert Device for changing the rotational position of a gas exchange valve of a control shaft controlling an internal combustion engine

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1538307A1 (en) * 1999-11-25 2005-06-08 Toyota Jidosha Kabushiki Kaisha Internal combustion engine having a variable valve train
USRE39851E1 (en) 1999-11-25 2007-09-25 Toyota Jidosha Kabushiki Kaisha Internal combustion engine having a variable valve train
USRE41758E1 (en) 1999-11-25 2010-09-28 Toyota Jidosha Kabushiki Kaisha Internal combustion engine having a variable valve train
WO2005047658A1 (en) * 2003-11-08 2005-05-26 Ina-Schaeffler Kg Adjustment device for adjusting the relative rotational angle position of a camshaft in relation to a crankshaft of an internal combustion engine
US7717072B2 (en) 2003-11-08 2010-05-18 Schaeffler Kg Adjustment device for adjusting the relative rotational angle position of a camshaft in relation to a crankshaft of an internal combustion engine
US7882813B2 (en) 2003-11-08 2011-02-08 Schaeffler Technologies Gmbh & Co. Kg Adjustment device for adjusting the relative rotational angle position of a camshaft in relation to a crankshaft of an internal combustion engine

Also Published As

Publication number Publication date
FR841419A (en) 1939-05-19

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