BRITISH STANDARD AUTOMOBILE SERIES BS AU 206 3 1986 ISO 7342 1982 Diagnostic systems for road vehicles — Part 3 Specification for general requirements for testing ignition systems [ISO title Road vehi[.]
Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BRITISH STANDARD AUTOMOBILE SERIES BS AU 206-3:1 986 ISO 7342:1 982 Diagnostic systems for road vehicles — Part 3: Specification for general requirements for testing ignition systems [ISO title: Road vehicles — Diagnostic systems — Equipment for ignition systems testing] UD C 62 1 : 62 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 206-3:1 986 Committees responsible for this British Standard The preparation of this British Standard was entrusted by the Automobile Standards Committee (AUE/- ) to Technical Committee AUE/1 6, upon which the following bodies were represented: Association of Trailer Manufacturers Department of Transport (Highways) Electric Cable Makers’ Confederation Institution of Electronic and Radio Engineers National Caravan Council Limited Society of Motor Manufacturers and Traders Limited This British Standard, having been prepared under the direction of the Automobile Standards Committee, was published under the authority of the Board of BSI and comes into effect on Amendments issued since publication 28 February 986 © BSI 02- 2000 The following BSI references relate to the work on this standard: Committee reference AUE/1 Draft for comment 81 /71 095 DC ISBN 80 40 Amd No Date of issue Comments Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 206-3:1 986 Contents Page Committees responsib le Inside front cover National foreword ii Scope Field of application References E ngine functions to be tested D iagnostic sensors and electrical connectors for connecting the diagnostic tester Measuring instrument specifications Figure — Useful signal of the reference cylinder sensor Figure — Useful signal of the crankshaft position sensor Figure — Schematic equivalent wiring diagram for a crankshaft position sensor Figure — Crankshaft position sensor with shoulder Figure — Gauge Figure — Schematic equivalent wiring diagram for a high voltage sensor of built- in type Figure — Accuracy diagram Pub lications referred to © BSI 02 - 000 Inside back cover i Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 206-3:1 986 National foreword This Part of BS AU 206 has been prepared under the direction of the Automobile Road vehicles — Diagnostic systems — Equipment for ignition systems testing” published by the Standards Committee and is identical with ISO 7342: 982 “ International Organization for Standardization (ISO) Terminology and conventions The text of the International Standard has been approved as suitable for publication as a British Standard without deviation Some terminology and certain conventions are not identical with those used in British Standards; attention is drawn especially to the following The comma has been used as a decimal marker In British Standards it is current practice to use a full point on the baseline as the decimal marker Wherever the words “International Standard” appear, referring to this standard, they should be read as “British Standard” Cross-reference International Standard Corresponding British Standard ISO 4092: 984 BS AU 206 Part : 986 Diagnostic systems for road vehicles Glossary (Identical) The Technical Committee has reviewed the provisions of ISO 2542, ISO 3553 and ISO 651 8- , to which reference is made in the text, and has decided that they are acceptable for use in conj unction with this standard A British Standard does not purport to include all the necessary provisions of a contract Users of British Standards are responsible for their correct application Compliance with a British Standard does not of itself confer immunity from legal obligations Summary of pages This document comprises a front cover, an inside front cover, pages i and ii, pages to 6, an inside back cover and a back cover This standard has been updated (see copyright date) and may have had amendments incorporated This will be indicated in the amendment table on the inside front cover ii © BSI 02- 2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 206-3:1 986 4.3 Voltage between the supply terminal of the Scope This International Standard defines devices for ignition coil and the common return measuring parameters of ignition systems of This parameter shall be measured between the internal combustion engines in road vehicles, and supply point of the ignition equipment (including their possible methods of use the additional resistance if any connected to the coil primary terminal) and the common return side of Field of application This International Standard applies to plug- in and built- in sensors for exclusively diagnostic purposes the switching element as described in 4.2 4.4 Secondary voltage To measure this parameter, an appropriate sensor is required, the characteristics of which and method References ISO 2542, Internal co m b ustio n engines — Sp ark p lug ignition — Term ino lo gy ISO 3553, Road v ehicles — High tension co nnectio n for ignition coils and distrib utors ISO 4092, Ro ad vehicles — Motor v ehicles — Diagnostic sys tem s — Term s and definitions ISO 651 8- , Part Ignition system s — —Vocab ulary of measurement being defined in Diagnostic sensors and electrical connectors for connecting the diagnostic tester Built-in 1) reference cylinder sensors In the case where the vehicle manufacturer provides a built- in reference cylinder sensor and a built- in connecting device, three contacts shall be reserved for such sensor at the connecting device, two Engine functions to be tested Where these are specified by the vehicle manufacturer, the tests shall be carried out in the manner prescribed in accordance with the following general principles It is recommended that the vehicle manufacturer’s specifications shall include a check of battery condition since this component plays a vital part in the performance of the ignition system 4.1 Ignition timing 4.1 Dwell ratio contacts bearing the signal and one being provided for the screen In order to minimize disturbing effects on the output signal, the sensor shall be of a type responsive to ignition current rather than voltage The design of the sensor and its location shall be such as to achieve a minimum useful signal according to 1 when the sensor is used under normal operating conditions of the ignition system Under those conditions, the noise level shall comply with the requirements of The useful signal and the noise level shall be This parameter shall be measured by connecting an measured with a load of 220 appropriate measuring device to the primary parallel terminal of the coil connected to the switching 1 element, or to a point carrying the same signal 4.1 Initial timing and advance These parameters shall be checked by measuring the crankshaft position at the ignition point relative to TDC (top dead centre) The crankshaft position may be established by a crankshaft position sensor or a stroboscope, the ignition point by the corresponding signal from primary or secondary of the ignition system 4.2 Voltage across the switching element This parameter shall be measured between the insulated terminal of the switching element or the with nF capacity in Useful signal (see Figure 1) Noise level The noise level shall not exceed either V or a time voltage product of 0, 5 × –6 V· s Other requirements The sensor shall be clearly marked, for example with an arrow which shall point towards the spark plug when the sensor is fitted to the high tension cable The output conductor bearing the positive first half- wave signal shall be marked red The second conductor shall be marked with another colour coil primary terminal connected to it, and a point on the common return side as close as possible to the switching element 1) Electrical characteristics for clip- on and plug- in reference cylinder sensors are not specified as diagnostic equipment manufacturers have the responsibility for ensuring compatibility of such sensors with the measuring equipment © BSI 02- 2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 206-3:1 986 The output characteristics specified shall be met over a sensor temperature range of – 20 to + 100 °C After a recovery time of at least h at an ambient temperature of 23 ± °C, the sensor shall furthermore comply with the requirements after exposure for h at each of the following temperatures: – 40 °C and + 140 °C Crankshaft position sensor In the case where the vehicle manufacturer provides a built-in crankshaft position sensor and a built-in connecting device, three contacts shall be reserved for such sensor at the connecting device, two contacts bearing the signal and one being provided for the screen The excitation of the sensor shall occur at 20° after the TDC of the reference cylinder(s) specified whilst another excitation may occur at 12 ° before TDC 2) Such sensor, whether plug-in or built-in, should be of the inductive current-fed type without permanent magnet working in conjunction with 3)a functionally compatible component in the engine 2.1 Electrical characteristics of the crankshaft position sensor (see Figure and Figure 3) The signal from the crankshaft position sensor shall correspond to the curve in Figure and specifications: The first halfwave of the signal u(t) may cause either an increase or a decrease of the voltage across the terminals of the sensor, according to whether a pin or a slot is used Intersection point C is defined as the zero cross-over point of the useful signal superposed to the excitation voltage Ue When fed with a supply current of 70 mA, the output signal voltages U1 – shall be between 30 mV and 40 V over the engine speed range specified by the vehicle manufacturer in his diagnostic procedure A plug-in sensor shall be tested in a test rig4) having an iron pin, in accordance with following composition: [C (carbon) u 0,03 %, Si (silicon) = traces, Mn (manganese) u 0,03 %, P (phosphorus) u 0,010 %,5) S (sulphur) u 0,035 %, Al (aluminium) = traces] , mounted in a mild steel disc according to the following conditions, and the output signal shall meet the specifications 5.2.1 and 5.2.1 The pin shall be a flat-topped solid cylinder of diameter ± 0,1 mm projecting ± 0,1 mm radially from the circumferential surface of the disc and mounted symmetrically across it The method of retention of the pin shall have negligible effect on the reluctance of the system The disc shall have a nominal diameter of 160 mm and a nominal thickness of 10 mm Figure — Useful signal of the reference cylinder sensor 2) An angle of 9,5° after TDC currently being used by many vehicle manufacturers is permitted, but these manufacturers are encouraged to adopt the 20° after TDC angle corresponding interface characteristics in cooperation with engine makers but such sensors should conform to the accuracy and dimensional requirements of 2.1 , 2.2 , 2.3 and 2.4 , where applicable 4) In view of the high rotational speed of the test rig, disc protection, such as a cover, should be provided 5) Corresponds to the specifications of 1.1003 DIN 43720 (1963) 3) For sensors of other types, particularly plug-in, the diagnostic equipment manufacturers shall be responsible for the © BSI 02-2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 206-3:1 986 Figure — Useful signal of the crankshaft position sensor Figure — Schematic equivalent wiring diagram for a crankshaft position sensor The signal- to- noise ratio, whether one or more 2.3 The characteristics specified shall be met over signals are obtained, shall not be less than dB; the a sensor temperature range of – 20 to + 00 ° C off- vehicle equipment shall not introduce significant After an exposure time of h to temperatures deterioration of this value 2.1 v U1 – = 0, m/s, a pin gap of current of 2.1 v W 30 mV for a relative velocity of Ie U1 – Ie mm and a supply = 70 mA u 40 V for a relative velocity of = 60 m/s, a pin gap of current of d= d= 0, mm and a supply = 70 mA 2.2 Over the engine speed range specified by the of – 40 °C and + 40 ° C and a recovery time of h in each case, the sensor shall continue to comply with the specified characterisitics 2.4 Dimensions (plug in type only) 2.4.1 Sensor with shoulder See Figure 2.4.2 Sensor without shoulder vehicle manufacturer in his diagnostic procedure, The sensor shall be designed such that it will fit in a the cross- over (point C) of the signal curve of a gauge shown in Figure 5, which represents a built- in or a standard plug- in crankshaft position suitable mounting hole with respect to the diameter sensor shall occur between the geometrical crankshaft position as specified and ° after this position © BSI 02- 2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 206-3:1 986 Figure — Crankshaft position sensor with shoulder Accuracy of the sensor (see Figure and Figure 7) D The basic dividing ratio error shall be kept within A 14 25 limits of ± % up to 15 kV applied voltage and ± 10 % beyond, with the frequency range B 9,6 45 defined below 5.3 High voltage sensor The frequency range shall be 10 Hz to 130 kHz and the maximum attenuation at these frequencies shall To measure high tension voltage for diagnostic purposes, an appropriate sensor is required In the be % with an applied sinusoidal waveform This response shall be met by the sensor over a case where the vehicle manufacturer provides a built-in sensor and a built-in connecting device, two temperature range of + 20 to + 80 °C when it is contacts shall be reserved for such a sensor at the terminated by diagnostic tester connecting device, one carrying the signal, and one acting as both signal return and screen if required Type h1 L –0,2 5.3.1 6) 3.1 Electrical characteristics of built-in sensors 7) The measuring voltage shall extend to at least 40 kV 6) Capacitive discharge ignition systems are excluded from the scope of this International Standard, but transistorized inductive systems are included specified, as diagnostic equipment manufacturers have the responsibility for ensuring compatibility of such sensors with the measuring equipment 7) Electrical characteristics for clip-on high voltage sensors, including those inserted in coil or distributor towers, are not © BSI 02-2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 206-3:1 986 Figure — Gauge 3.2 Dimensions — Clip-on type 3.3 Measuring procedure (Example) Measuring instrument specifications When this is intended for insertion in coil or 6.1 Low tension measurement distributor tower it is the responsibility of the shall have a minimum resistance equipment manufacturer to ensure compliance with Voltmeters of k per volt of full range, and maximum ISO 3553 capacitance of 20 nF 8) Coil connected to distributor by a cable (king lead) 3.3.1 A sensor shall be attached to the king lead for the purpose of carrying the signal for measurement to a suitable signal displaying or analyzing device whilst the engine is running 3.3.1 The sensor shall be attached to one or more spark plug lead(s), one after the other, as necessary Measurements may then be taken as in 5.3.3.1 3.3.1 The king lead shall be detached from the high tension outlet of the ignition coil to which an artificial load conforming to 6.3 is then attached, the sensor now being fitted to the high voltage connecting cable of the artificial load Measurements may then be taken as in 5.3.3.1 , but by cranking the engine by the starter motor 3.3.1 6.2 Dwell angle measurement The equipment shall have a minimum resistance of 10 k7 and a minimum impedance of k7 at 10 kHz 6.3 High tension measurement The artificial load shall have a resistance of M7 ± 10 % in parallel with a capacitance of 50 pF ± 20 % including the connecting cable which shall be fitted to the outlet of the ignition coil when taking measurements, both in parallel with a safety spark gap open to ambient air and set to break down between 25 and 33 kV at sea-level NOTE The sequence in which the tests are carried out may be varied according to practical convenience Coil integral with distributor The procedure shall be as in 5.3.3.1 3.3.2 8) This procedure is given as an example since many other procedures may be specified by vehicle manufacturers © BSI 02-2000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 206-3:1 986 Figure — Schematic equivalent wiring diagram for a high voltage sensor of built-in type Figure — Accuracy diagram © BSI 02 - 000 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI Publications referred to See national foreword © BSI 02 - 000 BS AU 206-3:1 986 Li cen sed Copy: Lon d on Sou th Ban k U n i versi ty, Lon d on Sou th Ban k U n i versi ty, Sat Dec 09 01 : 57: 54 G M T+00: 00 2006, U n trol l ed Copy, (c) BSI BS AU 206-3:1 986 ISO 7342:1 982 BSI — British Standards Institution BS I is the indep endent national b ody res p ons ib le for p rep aring Britis h S tandards It p res ents the UK view on s tandards in E urop e and at the international level It is incorp orated b y Royal C harter Revisions Britis h S tandards are up dated b y amendment or revis ion Us ers of Britis h S tandards should make s ure that they p oss es s the latest amendments or editions It is the constant aim of BS I to imp rove the quality of our p roducts and services We would b e grateful if anyone finding an inaccuracy or amb iguity while us ing this Britis h S tandard would inform the S ecretary of the technical committee res p ons ib le, the identity of which can b e found on the inside front cover Tel: 02 89 96 90 00 Fax: 02 89 96 40 BS I offers memb ers an individual up dating s ervice called PLUS which ens ures that s ub s crib ers automatically receive the lates t editions of s tandards Buying standards O rders for all BS I, international and foreign s tandards p ub lications s hould b e addres s ed to C us tomer S ervices Tel: 899 00 Fax: 899 7001 In res p ons e to orders for international standards , it is BS I p olicy to sup p ly the BS I imp lementation of thos e that have b een p ub lis hed as Britis h S tandards, unless otherwis e requested Information on standards BS I p rovides a wide range of information on national, E urop ean and international standards through its Lib rary and its Technical H elp to E xp orters S ervice Various BS I electronic information s ervices are also availab le which give details on all its p roducts and s ervices C ontact the Information C entre Tel: 02 89 96 71 1 Fax: 02 89 96 048 S ub s crib ing memb ers of BS I are kep t up to date with s tandards develop ments and receive sub s tantial discounts on the p urchase p rice of s tandards For details of thes e and other b enefits contact Memb ership Adminis tration Tel: 02 89 96 70 02 Fax: 02 89 96 00 Copyright C op yright s ub s is ts in all BS I p ub lications BS I als o holds the cop yright, in the UK, of the p ub lications of the international s tandardization b odies E xcep t as p ermitted under the C op yright, D es igns and Patents Act 988 no extract may b e rep roduced, s tored in a retrieval s ystem or transmitted in any form or b y any means – electronic, p hotocop ying, recording or otherwis e – without p rior written p ermis s ion from BS I This does not p reclude the free us e, in the cours e of imp lementing the standard, of necess ary details such as s ymb ols, and size, typ e or grade designations If thes e details are to b e used for any other p urp os e than imp lementation then the p rior written p ermiss ion of BS I must b e ob tained If p ermis sion is granted, the terms may include royalty p ayments or a licensing agreement D etails and advice can b e ob tained from the C op yright Manager BS I 89 C his wick H igh Road London W4 4AL Tel: 02 89 96 70