FR2313555A1 - Exhaust valve for four stroke engine - has piston so that pressure load on valve is balanced and reduces load on operating cam - Google Patents

Exhaust valve for four stroke engine - has piston so that pressure load on valve is balanced and reduces load on operating cam

Info

Publication number
FR2313555A1
FR2313555A1 FR7518152A FR7518152A FR2313555A1 FR 2313555 A1 FR2313555 A1 FR 2313555A1 FR 7518152 A FR7518152 A FR 7518152A FR 7518152 A FR7518152 A FR 7518152A FR 2313555 A1 FR2313555 A1 FR 2313555A1
Authority
FR
France
Prior art keywords
piston
valve
exhaust valve
load
balanced
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.)
Withdrawn
Application number
FR7518152A
Other languages
French (fr)
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.)
LAURENT NARCISSE
Original Assignee
LAURENT NARCISSE
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 LAURENT NARCISSE filed Critical LAURENT NARCISSE
Priority to FR7518152A priority Critical patent/FR2313555A1/en
Publication of FR2313555A1 publication Critical patent/FR2313555A1/en
Withdrawn legal-status Critical Current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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L3/20—Shapes or constructions of valve members, not provided for in preceding subgroups of this group
    • 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
    • F01L3/00—Lift-valve, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces; Parts or accessories thereof
    • F01L2003/25—Valve configurations in relation to engine
    • F01L2003/258—Valve configurations in relation to engine opening away from cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/02—Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/027—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle four

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

The exhaust valve (1) has a piston (2) mounted on the push rod (3). The piston (2) is provided with sealing rings (4) and slides in a cylinder (5). The valve is normally held closed by a compression spring (6). The space above the surface of the piston (2) communicates with the combustion chamber (7). The pressure on the upper surface of the piston always balances the pressure on the lower face of the exhaust valve head (1). The camshaft then has only to supply a force sufficient to overcome the downward force exerted by the compression spring (6). This feature reduces the wear on the cam and on the gears driving the camshaft.
FR7518152A 1975-06-04 1975-06-04 Exhaust valve for four stroke engine - has piston so that pressure load on valve is balanced and reduces load on operating cam Withdrawn FR2313555A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7518152A FR2313555A1 (en) 1975-06-04 1975-06-04 Exhaust valve for four stroke engine - has piston so that pressure load on valve is balanced and reduces load on operating cam

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7518152A FR2313555A1 (en) 1975-06-04 1975-06-04 Exhaust valve for four stroke engine - has piston so that pressure load on valve is balanced and reduces load on operating cam

Publications (1)

Publication Number Publication Date
FR2313555A1 true FR2313555A1 (en) 1976-12-31

Family

ID=9156303

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7518152A Withdrawn FR2313555A1 (en) 1975-06-04 1975-06-04 Exhaust valve for four stroke engine - has piston so that pressure load on valve is balanced and reduces load on operating cam

Country Status (1)

Country Link
FR (1) FR2313555A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114184A2 (en) * 1983-01-14 1984-08-01 IRM ANTRIEBSTECHNIK GmbH Valve control for internal-combustion engines with outwardly opening piston valves to achieve an optimum combustion space
EP0435875A1 (en) * 1988-07-14 1991-07-10 Alto Automotive, Inc. Low profile internal combustion engine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0114184A2 (en) * 1983-01-14 1984-08-01 IRM ANTRIEBSTECHNIK GmbH Valve control for internal-combustion engines with outwardly opening piston valves to achieve an optimum combustion space
EP0114184A3 (en) * 1983-01-14 1984-11-07 IRM ANTRIEBSTECHNIK GmbH Valve control for internal-combustion engines with outwardly opening piston valves to achieve an optimum combustion space
EP0435875A1 (en) * 1988-07-14 1991-07-10 Alto Automotive, Inc. Low profile internal combustion engine
EP0435875A4 (en) * 1988-07-14 1991-12-04 Alto Automotive, Inc. Low profile internal combustion engine

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Legal Events

Date Code Title Description
ST Notification of lapse