GB769590A - Method of and apparatus for measuring the clearance of valves - Google Patents

Method of and apparatus for measuring the clearance of valves

Info

Publication number
GB769590A
GB769590A GB30507/54A GB3050754A GB769590A GB 769590 A GB769590 A GB 769590A GB 30507/54 A GB30507/54 A GB 30507/54A GB 3050754 A GB3050754 A GB 3050754A GB 769590 A GB769590 A GB 769590A
Authority
GB
United Kingdom
Prior art keywords
coils
tappet
rod
valve
valve stem
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
GB30507/54A
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.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
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 Daimler Benz AG filed Critical Daimler Benz AG
Priority to GB30507/54A priority Critical patent/GB769590A/en
Publication of GB769590A publication Critical patent/GB769590A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

769,590. Electric indicating systems. DAIMLER-BENZ AKT.-GES. Oct. 22, 1954 [Oct. 26, 1953], No. 30507/54. Class 40 (1). Valve clearance in, e.g. an internal combustion engine, is measured electrically. As shown, Fig. 2, the valve stem 5 carries an extension rod 10 extending axially through the tappet adjusting screw 8 into a pair of coils 11 housed in the tappet 2. In the lowest position of the tappet a non-ferrous section 12 of the rod 10 is located centrally within the coils so that a bridge in which the coils are connected is balanced. As the control cam 1 raises the tappet, the coils 11 are moved relative to the rod until the tappet screw 8 engages the valve stem. The bridge output at this point is a measure of the valve clearance, and after amplification and rectification may actuate an oscillograph or recorder. With an overhead valve, Fig. 3, the coils 11 are carried by the rocker 13, and a spring 14 carried by the rocker forces the rod 10 into engagement with a disc 15 secured to the valve stem 5. A single coil may be used but two coils are preferred, for temperature compensation, and have a positive or negative temperature coefficient. Variable condensers may be used in lieu of the coils.
GB30507/54A 1954-10-22 1954-10-22 Method of and apparatus for measuring the clearance of valves Expired GB769590A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB30507/54A GB769590A (en) 1954-10-22 1954-10-22 Method of and apparatus for measuring the clearance of valves

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30507/54A GB769590A (en) 1954-10-22 1954-10-22 Method of and apparatus for measuring the clearance of valves

Publications (1)

Publication Number Publication Date
GB769590A true GB769590A (en) 1957-03-13

Family

ID=6674020

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30507/54A Expired GB769590A (en) 1954-10-22 1954-10-22 Method of and apparatus for measuring the clearance of valves

Country Status (1)

Country Link
GB (1) GB769590A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509850A1 (en) * 1981-07-17 1983-01-21 Finike Italiana Marposs GAUGE FOR CONTROLLING PLAY BETWEEN CAMS OF A CAMSHAFT AND CORRESPONDING VALVES
CN107036508A (en) * 2017-05-25 2017-08-11 东风康明斯发动机有限公司 Engine dynamic valve gap signal detection means and method
CN107727040A (en) * 2017-09-04 2018-02-23 潍柴动力股份有限公司 The measuring method and device of a kind of valve clearance

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2509850A1 (en) * 1981-07-17 1983-01-21 Finike Italiana Marposs GAUGE FOR CONTROLLING PLAY BETWEEN CAMS OF A CAMSHAFT AND CORRESPONDING VALVES
DE3217863A1 (en) * 1981-07-17 1983-02-03 Finike Italiana Marposs S.p.A., 40010 Bentivoglio, Bologna MEASURING DEVICE
US4521863A (en) * 1981-07-17 1985-06-04 Finike Italiana Marposs S.P.A. Gauge for checking the clearance existing between the cams of a camshaft and the relevant valves
CN107036508A (en) * 2017-05-25 2017-08-11 东风康明斯发动机有限公司 Engine dynamic valve gap signal detection means and method
CN107727040A (en) * 2017-09-04 2018-02-23 潍柴动力股份有限公司 The measuring method and device of a kind of valve clearance
CN107727040B (en) * 2017-09-04 2019-08-27 潍柴动力股份有限公司 A kind of measurement method and device of valve clearance

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