FR2252023A5 - Shock absorber for IC engine valve tappet - face plates control oil flow around and through damping piston around tappet - Google Patents

Shock absorber for IC engine valve tappet - face plates control oil flow around and through damping piston around tappet

Info

Publication number
FR2252023A5
FR2252023A5 FR7341319A FR7341319A FR2252023A5 FR 2252023 A5 FR2252023 A5 FR 2252023A5 FR 7341319 A FR7341319 A FR 7341319A FR 7341319 A FR7341319 A FR 7341319A FR 2252023 A5 FR2252023 A5 FR 2252023A5
Authority
FR
France
Prior art keywords
tappet
piston
around
shock absorber
oil flow
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
FR7341319A
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.)
Chrysler France SAS
Original Assignee
Chrysler France SAS
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 Chrysler France SAS filed Critical Chrysler France SAS
Priority to FR7341319A priority Critical patent/FR2252023A5/en
Application granted granted Critical
Publication of FR2252023A5 publication Critical patent/FR2252023A5/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
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F01L1/16—Silencing impact; Reducing wear

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

The lower end of the tapper (4) slides in a bore in the cylinder head (3). The upper part of the tappet (4) is guided by a hole in the cover plate (8). A piston (6) is rigidly attached to the tappet (4) and has a diameter slightly less than the upper part of the bore. The piston (6) is provided with a number of holes covered by thin plates. The lower plate has holes to match the holes in the piston. When the tappet moves downwards, the inertia of the plates uncovers the piston holes allowing a free flow of oil. Downward motion is damped because the oil can flow only through the clearance around the piston.
FR7341319A 1973-11-20 1973-11-20 Shock absorber for IC engine valve tappet - face plates control oil flow around and through damping piston around tappet Expired FR2252023A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7341319A FR2252023A5 (en) 1973-11-20 1973-11-20 Shock absorber for IC engine valve tappet - face plates control oil flow around and through damping piston around tappet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7341319A FR2252023A5 (en) 1973-11-20 1973-11-20 Shock absorber for IC engine valve tappet - face plates control oil flow around and through damping piston around tappet

Publications (1)

Publication Number Publication Date
FR2252023A5 true FR2252023A5 (en) 1975-06-13

Family

ID=9127994

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7341319A Expired FR2252023A5 (en) 1973-11-20 1973-11-20 Shock absorber for IC engine valve tappet - face plates control oil flow around and through damping piston around tappet

Country Status (1)

Country Link
FR (1) FR2252023A5 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007677A1 (en) * 1986-06-12 1987-12-17 South Western Industrial Research Limited Variable actuator for a valve
US5421359A (en) * 1992-01-13 1995-06-06 Caterpillar Inc. Engine valve seating velocity hydraulic snubber
US5577468A (en) * 1991-11-29 1996-11-26 Caterpillar Inc. Engine valve seating velocity hydraulic snubber

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1987007677A1 (en) * 1986-06-12 1987-12-17 South Western Industrial Research Limited Variable actuator for a valve
US5577468A (en) * 1991-11-29 1996-11-26 Caterpillar Inc. Engine valve seating velocity hydraulic snubber
US5421359A (en) * 1992-01-13 1995-06-06 Caterpillar Inc. Engine valve seating velocity hydraulic snubber

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Legal Events

Date Code Title Description
CD Change of name or company name
TP Transmission of property
ST Notification of lapse