GB872386A - Improvements relating to the stopping of internal combustion engines - Google Patents

Improvements relating to the stopping of internal combustion engines

Info

Publication number
GB872386A
GB872386A GB575457A GB575457A GB872386A GB 872386 A GB872386 A GB 872386A GB 575457 A GB575457 A GB 575457A GB 575457 A GB575457 A GB 575457A GB 872386 A GB872386 A GB 872386A
Authority
GB
United Kingdom
Prior art keywords
engine
vent
relief valves
open
distributer
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
GB575457A
Inventor
George Yellowley
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.)
NORTH EASTERN MARINE ENGINEERI
Original Assignee
NORTH EASTERN MARINE ENGINEERI
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 NORTH EASTERN MARINE ENGINEERI filed Critical NORTH EASTERN MARINE ENGINEERI
Priority to GB575457A priority Critical patent/GB872386A/en
Publication of GB872386A publication Critical patent/GB872386A/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
    • 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
    • F01L2760/00—Control of valve gear to facilitate reversing, starting, braking of four stroke engines
    • F01L2760/003—Control of valve gear to facilitate reversing, starting, braking of four stroke engines for switching to compressor action in order to brake

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

872,386. Stopping; valve gears. NORTH EASTERN MARINE ENGINEERING CO. Ltd. Feb. 20, 1958 [Feb. 20, 1957], No. 5754/57. Classes 7(5) and 7(6). In an internal-combustion engine comprising one or more cylinders, each provided with a vent and means for controlling the opening and closing of the vent, the control means includes a movable valve member which has two positions of operation in which the control means are arranged to hold the vent or vents open to atmosphere when the movable member is in one position and to open and close the vent or vents in timed sequence when the movable valve member is in the other position of operation, the arrangement being such that when the movable member is in the last mentioned position of operation the vent of each cylinder is closed during at least part of the compression stroke of its associated piston and is opened at or near the end of the compression stroke so as to increase the resistance to the turning of the engine shaft. The invention is applicable to stopping large marine engines and compression ignition engines. When it is desired to stop the engine the fuel control operating lever 48 is moved to a central position. As a result, air or hydraulic fluid is admitted through the pipe 40 to the top of the distributer shuttle 56 and flows therefrom through the pipes 36 to all the cylinder relief valves 14. The relief valves are thereby held open so as to brake the engine. The engine speed falls to about 20 r.p.m. whereupon the operating lever 48 is moved to the left as viewed in Fig. 3. Air or hydraulic fluid is then supplied to the bottom end of the distributer shuttle 56 so as to cause it to move upwards to the position shown in Fig. 3. Then air or hydraulic fluid is supplied to the relief valves 14 in timed sequence. Each cylinder relief valve 14 is closed during the compression stroke and is open during the first 90 degrees of the expansion stroke. The engine cylinders each comprise opposed pistons 10, 12. The distributer 38 is conveniently driven off the engine cam shaft 50. Relief valves in accordance with Specification 745,714 (referred to) are suitable for the purpose of the invention. Specification 789,544 also is referred to in the Provisional Specification.
GB575457A 1957-02-20 1957-02-20 Improvements relating to the stopping of internal combustion engines Expired GB872386A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB575457A GB872386A (en) 1957-02-20 1957-02-20 Improvements relating to the stopping of internal combustion engines

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB575457A GB872386A (en) 1957-02-20 1957-02-20 Improvements relating to the stopping of internal combustion engines

Publications (1)

Publication Number Publication Date
GB872386A true GB872386A (en) 1961-07-12

Family

ID=9802038

Family Applications (1)

Application Number Title Priority Date Filing Date
GB575457A Expired GB872386A (en) 1957-02-20 1957-02-20 Improvements relating to the stopping of internal combustion engines

Country Status (1)

Country Link
GB (1) GB872386A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2286290A1 (en) * 1974-09-26 1976-04-23 Semt PNEUMATIC METHOD AND DEVICE FOR BRAKING AND RE-START, IN REVERSE DIRECTION, OF A DIESEL ENGINE
GB2160930A (en) * 1984-05-04 1986-01-02 Honda Motor Co Ltd Decompression control in an internal combustion engine

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2286290A1 (en) * 1974-09-26 1976-04-23 Semt PNEUMATIC METHOD AND DEVICE FOR BRAKING AND RE-START, IN REVERSE DIRECTION, OF A DIESEL ENGINE
GB2160930A (en) * 1984-05-04 1986-01-02 Honda Motor Co Ltd Decompression control in an internal combustion engine

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