FR3014479B1 - THERMAL MOTOR AND VEHICLE EQUIPPED WITH SUCH A MOTOR - Google Patents

THERMAL MOTOR AND VEHICLE EQUIPPED WITH SUCH A MOTOR Download PDF

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Publication number
FR3014479B1
FR3014479B1 FR1302855A FR1302855A FR3014479B1 FR 3014479 B1 FR3014479 B1 FR 3014479B1 FR 1302855 A FR1302855 A FR 1302855A FR 1302855 A FR1302855 A FR 1302855A FR 3014479 B1 FR3014479 B1 FR 3014479B1
Authority
FR
France
Prior art keywords
valve
cylinder head
motor
head
pusher
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.)
Active
Application number
FR1302855A
Other languages
French (fr)
Other versions
FR3014479A1 (en
Inventor
Olivier Pierre Yves Gravet
Benoit Thuault
Sebastien Froger
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.)
Naval Group SA
Original Assignee
DCNS SA
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 DCNS SA filed Critical DCNS SA
Priority to FR1302855A priority Critical patent/FR3014479B1/en
Priority to EP14196437.9A priority patent/EP2881316B1/en
Publication of FR3014479A1 publication Critical patent/FR3014479A1/en
Application granted granted Critical
Publication of FR3014479B1 publication Critical patent/FR3014479B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F01L13/08—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for decompression, e.g. during starting; for changing compression ratio
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B63—SHIPS OR OTHER WATERBORNE VESSELS; RELATED EQUIPMENT
    • B63G—OFFENSIVE OR DEFENSIVE ARRANGEMENTS ON VESSELS; MINE-LAYING; MINE-SWEEPING; SUBMARINES; AIRCRAFT CARRIERS
    • B63G8/00—Underwater vessels, e.g. submarines; Equipment specially adapted therefor
    • B63G8/08—Propulsion
    • B63G8/12—Propulsion using internal-combustion engines
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/146—Push-rods
    • 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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/181—Centre pivot rocking arms

Abstract

L'invention se rapporte à un moteur thermique, du type comprenant un arbre à cames (12), un cylindre muni d'une culasse (1), au moins une soupape (4, 5) mobile à travers une ouverture de la culasse et commandée par la rotation de l'arbre à cames via une tringlerie (14, 16, 22), et des moyens de rappel élastique (9) de la soupape vers une position de fermeture dans laquelle la tête (5) de la soupape est appliquée sur un siège (7) de la culasse, caractérisé en ce qu'il comprend : - un support (24) solidaire de la culasse (1) ; - un poussoir (26) mobile par rapport à ce support entre une position de repos, dans laquelle le poussoir est éloigné de la tringlerie (14, 16, 22) lorsque la soupape (4, 5) se trouve dans sa position de fermeture, et une position active dans laquelle le poussoir repousse la soupape sur une distance prédéterminée à l'encontre desdits moyens de rappel (9) en provoquant le soulèvement de la tête (5) de la soupape par rapport au siège (7) ; et - des moyens de virage lent (28 à 30, 13) pour entrainer à au moins une vitesse très lente le moteur thermique (102) sur au moins un tour complet. Application aux moteurs Diesel de propulsion des sous-marins.The invention relates to a heat engine, of the type comprising a camshaft (12), a cylinder provided with a cylinder head (1), at least one valve (4, 5) movable through an opening of the cylinder head and controlled by the rotation of the camshaft via a linkage (14, 16, 22), and elastic return means (9) of the valve to a closed position in which the head (5) of the valve is applied on a seat (7) of the cylinder head, characterized in that it comprises: - a support (24) integral with the cylinder head (1); - a pusher (26) movable relative to this support between a rest position, in which the pusher is remote from the linkage (14, 16, 22) when the valve (4, 5) is in its closed position, and an active position in which the pusher pushes the valve back a predetermined distance against said return means (9) causing the head (5) of the valve to rise relative to the seat (7); and - slow turning means (28 to 30, 13) for driving the heat engine (102) at at least one very slow speed over at least one complete revolution. Application to diesel engines for propelling submarines.

FR1302855A 2013-12-06 2013-12-06 THERMAL MOTOR AND VEHICLE EQUIPPED WITH SUCH A MOTOR Active FR3014479B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FR1302855A FR3014479B1 (en) 2013-12-06 2013-12-06 THERMAL MOTOR AND VEHICLE EQUIPPED WITH SUCH A MOTOR
EP14196437.9A EP2881316B1 (en) 2013-12-06 2014-12-05 Heat engine and vehicle provided with such an engine

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1302855A FR3014479B1 (en) 2013-12-06 2013-12-06 THERMAL MOTOR AND VEHICLE EQUIPPED WITH SUCH A MOTOR
FR1302855 2013-12-06

Publications (2)

Publication Number Publication Date
FR3014479A1 FR3014479A1 (en) 2015-06-12
FR3014479B1 true FR3014479B1 (en) 2018-01-05

Family

ID=50424320

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1302855A Active FR3014479B1 (en) 2013-12-06 2013-12-06 THERMAL MOTOR AND VEHICLE EQUIPPED WITH SUCH A MOTOR

Country Status (2)

Country Link
EP (1) EP2881316B1 (en)
FR (1) FR3014479B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB201702444D0 (en) * 2017-02-15 2017-03-29 Jaguar Land Rover Ltd Protecting an internal combustion engine of a vehicle from damage by induction of liquid

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US656020A (en) * 1899-11-09 1900-08-14 Camille Hautier Gas-engine.
GB290867A (en) * 1927-08-11 1928-05-24 Henry Montgomery Dunkerley Improvements in and relating to the starting of internal-combustion engines
US2019025A (en) * 1932-10-22 1935-10-29 Electric Boat Co Electric drive
US2137482A (en) * 1937-03-09 1938-11-22 Joseph V Gil Means for facilitating starting of internal combustion engines
US2343329A (en) * 1942-12-16 1944-03-07 Robert J Ruths Diesel engine
US2433447A (en) * 1945-10-05 1947-12-30 Caterpillar Tractor Co Automatic cylinder drainage system for internal-combustion engines
US3223076A (en) * 1963-03-19 1965-12-14 Tadao Yamaoka Automatic noncompression starting device
US3342170A (en) * 1965-11-01 1967-09-19 Gen Motors Corp Condensate scavenging arrangement
FR1488365A (en) * 1966-06-01 1967-07-13 Chantiers De Latlantique Remote control system for heat engine and its various applications
JPS562417A (en) * 1979-06-19 1981-01-12 Honda Motor Co Ltd Pressure reduction device for starting four-cycle engine
WO2001020146A1 (en) * 1999-04-29 2001-03-22 Ep Barrus Limited A fast post-immersion restart system for a marine propulsion unit

Also Published As

Publication number Publication date
EP2881316B1 (en) 2016-10-26
EP2881316A1 (en) 2015-06-10
FR3014479A1 (en) 2015-06-12

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