1、raising standards worldwideNO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAWBSI Standards PublicationBS ISO 7967-3:2010Reciprocating internalcombustion engines Vocabulary of components andsystemsPart 3: Valves, camshaft drives andactuating mechanismsBS ISO 7967-3:2010 BRITISH ST
2、ANDARDNational forewordThis British Standard is the UK implementation of ISO 7967-3:2010. Itsupersedes BS 7016-3:1988 which is withdrawn.The UK participation in its preparation was entrusted to TechnicalCommittee MCE/14, RIC engines.A list of organizations represented on this committee can beobtaine
3、d on request to its secretary.This publication does not purport to include all the necessaryprovisions of a contract. Users are responsible for its correctapplication. BSI 2010ISBN 978 0 580 58698 9ICS 01.040.27; 27.020Compliance with a British Standard cannot confer immunity fromlegal obligations.T
4、his British Standard was published under the authority of theStandards Policy and Strategy Committee on 30 November 2010.Amendments issued since publicationDate Text affectedBS ISO 7967-3:2010Reference numberISO 7967-3:2010(E)ISO 2010INTERNATIONAL STANDARD ISO7967-3Second edition2010-08-15Reciprocat
5、ing internal combustion engines Vocabulary of components and systems Part 3: Valves, camshaft drives and actuating mechanisms Moteurs alternatifs combustion interne Vocabulaire des composants et des systmes Partie 3: Soupapes, arbres cames et mcanismes de commande BS ISO 7967-3:2010ISO 7967-3:2010(E
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9、RIGHT PROTECTED DOCUMENT ISO 2010 All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below
10、 or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 749 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2010 All rights reservedBS ISO 7967-3:2010ISO 7967-3:2010(E) ISO 2010 All
11、rights reserved iiiForeword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a su
12、bject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (
13、IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical commi
14、ttees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not b
15、e held responsible for identifying any or all such patent rights. ISO 7967-3 was prepared by Technical Committee ISO/TC 70, Internal combustion engines. This second edition cancels and replaces the first edition (ISO 7967-3:1987), which has been technically revised. ISO 7967 consists of the followin
16、g parts, under the general title Reciprocating internal combustion engines Vocabulary of components and systems: Part 1: Structure and external covers Part 2: Main running gear Part 3: Valves, camshaft drive and actuating mechanisms Part 4: Pressure charging and air/exhaust gas ducting systems Part
17、5: Cooling systems Part 6: Lubricating systems Part 7: Governing systems Part 8: Starting systems Part 9: Control and monitoring systems BS ISO 7967-3:2010BS ISO 7967-3:2010INTERNATIONAL STANDARD ISO 7967-3:2010(E) ISO 2010 All rights reserved 1Reciprocating internal combustion engines Vocabulary of
18、 components and systems Part 3: Valves, camshaft drives and actuating mechanisms 1 Scope This part of ISO 7967 defines terms relating to the valves, camshaft drive and actuating mechanisms of reciprocating internal combustion engines. ISO 2710-1 gives a classification of reciprocating internal combu
19、stion engines and defines basic terms of such engines, their working and characteristics. 2 Definitions 2.1 Camshaft N Term Definition Illustration 2.1.1 camshaft shaft incorporating cams which control the events of the working cycle (e.g. valve opening and closing timings, injection or ignition) 2.
20、1.2 one-piece camshaft camshaft where cams and shaft are of one piece2.1.3 assembled camshaft camshaft where cams and flanges are fitted onto the shaft 2.1.4 cam component by which valves or fuel injection pumps etc. are operated BS ISO 7967-3:2010ISO 7967-3:2010(E) 2 ISO 2010 All rights reserved2.2
21、 Camshaft drive N Term Definition Illustration 2.2.1 camshaft drive mechanism by which the camshaft is rotated 2.2.2 gear drive crankshaft-to-camshaft drive by means of a series of gears 2.2.3 chain drive crankshaft-to-camshaft drive by means of sprocket wheels and timing chain 2.2.4 sprocket wheel
22、wheel that drives or is driven by the timing chain 2.2.5 timing chain component to transmit movement from the crankshaft to the camshaft 2.2.6 chain tension adjuster assembly mechanism to compensate for the increase in length resulting from chain wear, using a tensioning wheel or a slide rail NOTE A
23、ctuation is by spring or hydraulic mechanism. 2.2.7 tensioning wheel wheel pressed against the chain to adjust its tension 2.2.8 slide rail rail pressed against the chain to adjust its tension 2.2.9 slide bars pair of components to absorb vibrations and to guide the chain 2.2.10 guide wheel wheel to
24、 guide the chain2.2.52.2.42.2.92.2.42.2.72.2.92.2.102.262.2.11 synchronous belt drive crankshaft-to-camshaft drive by means of synchronous belt pulleys and belt BS ISO 7967-3:2010ISO 7967-3:2010(E) ISO 2010 All rights reserved 3N Term Definition Illustration 2.2.12 synchronous belt pulley pulley tha
25、t has teeth to mesh with the teeth of a synchronous belt 2.2.13 synchronous belt elastic endless toothed belt 2.2.14 belt tensioner mechanism to adjust tension in the belt 2.2.15 tensioning pulley pulley pressed against the belt to adjust its tension 2.2.122.2.132.2.152.2.122.2.142.3 Valves N Term D
26、efinition Illustration 2.3.1 valve poppet valve component consisting of stem, head and face (seat) which allows combustion gases to enter or leave the cylinder BS ISO 7967-3:2010ISO 7967-3:2010(E) 4 ISO 2010 All rights reservedN Term Definition Illustration 2.3.2 inlet valve valve by which a fresh c
27、harge is admitted into the engine combustion chamber 2.3.3 exhaust valve valve by which the exhaust gases are discharged from the engine combustion chamber 2.3.4 valve spring retainer component used to hold the valve spring and to transmit spring force to the valve stem 2.3.5 valve collet valve key
28、valve lock pair of components that hold the valve spring retainer on the valve stem 2.3.6 valve spring washer washer that prevents damage to the cylinder head 2.3.7 valve spring spring that closes the valve 2.3.8 valve guide component that guides the valve 2.3.9 valve seat insert replaceable valve s
29、eat in the cylinder head 2.3.10 valve stem seal seal between valve stem and valve guide located at the upper and/or lower end of the valve guide to prevent oil entering into cylinder head 2.3.52.3.42.3.72.3.102.3.62.3.82.3.92.3.2/2.3.32.3.11 valve cage component separate from the cylinder head into
30、which the valve is fitted NOTE Cooled valve cages have the additional notation “cooled”. BS ISO 7967-3:2010ISO 7967-3:2010(E) ISO 2010 All rights reserved 52.4 Actuating mechanism N Term Definition Illustration 2.4.1 actuating mechanism components used to convert the rotary motion of the cam to the
31、reciprocating motion of valves and fuel pumps 2.4.2 tappet device that bears on the cam and slides in a guide to transmit reciprocating motion 2.4.3 sliding tappet flat-faced tappet in sliding contact with the cam 2.4.4 roller tappet tappet that carries a roller that runs in contact with the cam BS
32、ISO 7967-3:2010ISO 7967-3:2010(E) 6 ISO 2010 All rights reservedN Term Definition Illustration 2.4.5 tappet roller part of the roller tappet that is used to transfer cam stroke to the tappet2.4.6 tappet guide component to guide the tappet 2.4.62.4.52.4.7 cam follower lever that bears on the cam and
33、transmits reciprocating motion 2.4.8 cam follower shaft shaft about which the cam follower pivots 2.4.9 cam follower bracket bracket that carries the cam follower 2.4.10 thrust cup part of the cam follower or the rocker arm subjected to push-rod pressure 2.4.72.4.102.4.92.4.82.4.11 push-rod rod that
34、 transmits motion from the tappet or cam follower to the rocker arm 2.4.12 rocker arm rocker components used to reverse push-rod movement 2.4.13 valve adjuster screw to adjust valve clearance 2.4.122.4.132.4.11BS ISO 7967-3:2010ISO 7967-3:2010(E) ISO 2010 All rights reserved 7N Term Definition Illus
35、tration 2.4.14 rocker arm bracket rocker arm pedestal component that supports the rocker arm2.4.15 rocker arm shaft component on which the rocker arm pivots 2.4.152.4.142.4.142.4.16 valve bridge bridge piece component operating two or more valves from a single force 2.4.162.4.17 valve rotator mechan
36、ism that rotates the valve Alphabetic index Term Clause actuating mechanism 2.4.1 adjuster, valve 2.4.13 arm, rocker 2.4.12 assembled camshaft 2.1.3 assembly, chain tension adjuster 2.2.6 bar, slide 2.2.9 belt tensioner 2.2.14 belt, synchronous 2.2.13 BS ISO 7967-3:2010ISO 7967-3:2010(E) 8 ISO 2010
37、All rights reservedTerm Clause bracket, cam follower 2.4.9 bracket, rocker arm 2.4.14 bridge piece 2.4.16 bridge, valve 2.4.16 cage, valve 2.3.11 cam 2.1.4 cam follower 2.4.7 cam follower bracket 2.4.9 cam follower shaft 2.4.8 camshaft 2.1.1 camshaft drive 2.2.1 camshaft, assembled 2.1.3 camshaft, o
38、ne-piece 2.1.2 chain drive 2.2.3 chain tension adjuster assembly 2.2.6 chain, timing 2.2.5 collet, valve 2.3.5 cup, thrust 2.4.10 drive, camshaft 2.2.1 drive, chain 2.2.3 drive, gear 2.2.2 drive, synchronous belt 2.2.11 exhaust valve 2.3.3 follower, cam 2.4.7 gear drive 2.2.2 guide wheel 2.2.10 guid
39、e, tappet 2.4.6 guide, valve 2.3.8 inlet valve 2.3.2 key, valve 2.3.5 lock, valve 2.3.5 mechanism, actuating 2.4.1 one-piece camshaft 2.1.2 pedestal, rocker arm 2.4.14 poppet valve 2.3.1 pulley, synchronous belt 2.2.12 pulley, tensioning 2.2.15 push-rod 2.4.11BS ISO 7967-3:2010ISO 7967-3:2010(E) ISO
40、 2010 All rights reserved 9Term Clause rail, slide 2.2.8 retainer, valve spring 2.3.4 rocker 2.4.12 rocker arm 2.4.12 rocker arm bracket 2.4.14 rocker arm pedestal 2.4.14 rocker arm shaft 2.4.15 roller tappet 2.4.4 rotator, valve 2.4.17 seal, valve stem 2.3.10 seat, valve 2.3.9 shaft, cam follower 2
41、.4.8 shaft, rocker arm 2.4.15 slide bar 2.2.9 slide rail 2.2.8 sliding tappet 2.4.3 spring, valve 2.3.7 sprocket wheel 2.2.4 synchronous belt 2.2.13 synchronous belt drive 2.2.11 synchronous belt pulley 2.2.12 tappet 2.4.2 tappet guide 2.4.6 tappet roller 2.4.5 tappet, roller 2.4.4 tappet, sliding 2
42、.4.3 tensioner, belt 2.2.14 tensioning pulley 2.2.15 tensioning wheel 2.2.7 thrust cup 2.4.10 timing chain 2.2.5 valve adjuster 2.4.13 valve bridge 2.4.16 valve cage 2.3.11 valve collet 2.3.5 valve guide 2.3.8 valve key 2.3.5 valve lock 2.3.5 BS ISO 7967-3:2010ISO 7967-3:2010(E) 10 ISO 2010 All righ
43、ts reservedTerm Clause valve rotator 2.4.17 valve seat 2.3.9 valve spring 2.3.7 valve spring retainer 2.3.4 valve spring washer 2.3.6 valve stem seal 2.3.10 valve, exhaust 2.3.3 valve, inlet 2.3.2 valve, poppet 2.3.1 washer, valve spring 2.3.6 wheel, guide 2.2.10 wheel, sprocket 2.2.4 wheel, tension
44、ing 2.2.7 BS ISO 7967-3:2010ISO 7967-3:2010(E) ISO 2010 All rights reserved 11Bibliography 1 ISO 2710-1, Reciprocating internal combustion engines Vocabulary Part 1: Terms for engine design and operation BS ISO 7967-3:2010ISO 7967-3:2010(E) ICS 01.040.27; 27.020 Price based on 10 pages ISO 2010 All
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