Bsi bs au 217 2 1989 (2000)

BRITISH STANDARD AUTOMOBILE SERIES BS AU 217 2 1989 Maximum road speed limiters for motor vehicles — Part 2 Specification for system and component requirements UDC 629 11 585 7 Reproduced by IHS under[.]

Maximum road speed

U C 6 9.1 -5 5.7

This Bri shStan ard, ha ing

b en pre ared u der the

directonof the Automo ile

Stan ards Policy Commi e ,

waspublished u der the

authoriyof the Bo rd of BSI

an comes into efect on

2 Fe ruary1 9

© BSI 0 -2 0

The folowing BSI references

relate to the work on this

stan ard:

Commi e reference AUE/13

Draft for comment8 / 75 9 DC

ISBN 0 5 0 1 2 9 X

The prep ration of this BritishStand rd was entrusted b the Automobi e

Stand rds Pol cy Commit e ( AUE/-) to Tech ical Commit e AUE/13, upon

which the fol owing bod ies were represented :

British Raiway s Board

Bus and Coach Cou ci

Dep rtment of Transport ( Hig hway s)

Dep rtment of Transport ( TRRL)

Freig ht Transport Association

Health an Safety Executiv e

Institute of Roa Transport Eng ine r ( Incorporated)

Lond on Reg ional Transport

Ministry of Defence

Roa Haulag e Association Ltd

Society of Motor Man facturer and Tra er Limited

Am endm ents is ued sinc publ cation

Amd No Date of is ue Comments

Pag e

Appendix C Transient v oltag e test sev erity lev els 4

Fig ure 2 — Driv ing rain test: test ca inet no zle

Ta le 2 — Transient v oltag e test sev erity lev els 4

This Part of BSAU2 7 has be n prep red u der the d irection of the Automobie

Stand rd s Pol cy Commit e

Part1 of this stand rd deals with the requirements relating to the perormance

of the as embled sy stem making up the spe d lmiter dev ice when instal ed in a

v ehicle

A British Stand ard d oes not purport to includ e al the neces ary prov isions of a

contract User of British Stand rd s are responsible for their cor ect a plcation

Com pl anc with a British Standard does not ofitself confer im m unity

f om leg al o l g ations

Sum mary of pag es

This document comprises a f ont cov er, an insid e font cov er, p g esi andi ,

p g es1 to8, an inside b ck cov er and a b ck cov er

This stand rd has be n up ated ( se copy rig ht d ate) an ma hav e ha

amendments incorporated This wi l be indicated in the amendment ta le on the

inside f ont cov er

1 Scope

This Part of BSAU2 7 specifies req uirements for

the perormance of sy stems and components

desig ned to form p rt of a spe d lmiter intended to

lmit the ma imum roa spe d of motor v ehicles b

control of eng ine power

Appendix A g iv es a sy stem dura i ty test,

Appendix B, a time and temperature sta i ity test,

Appendix C shows transient v oltag e test sev erity

lev els, Append ix D a sin soid l v ibration test and

Appendix E g iv es a d itional tests which sy stems

man facturer ma wish to includ e in their own

specifications

NOT 1 Not al the re uirements g iv n wil neces arily a ply

to ev ery sp ed limier system.For e ample, some are of a

mechanical nature an therefore electrical characteristc wil

not b a plica le

NOT 2 The t les of the publicatons refer ed to in this

stan ard are listed on the inside b ck co er

NOT 3 All v ltag es are quoted for nominal2 V systems an ,

in brackets, for1 V systems i.e.2 ( 12)

2 Definitions

For the purposes ofthis Part of BSAU2 7 the

d efinitions g iv en in BSAU2 7-1 a ply , tog ether

with the folowing

2.1

permanent damag e

d mag e sustained b a component or sy stem which

render it inoperativ e For the purpose of this

definition the rupture of a fuse or the operation of

other user serv icea le cir uit protection d ev ices is

not taken to be permanent d mag e

2.2

norm al function

fu ctioning in ac ord ance with the requirements of

Part1 of this stand rd

2.3

fai ure to function

fu ctioning outside the req uirements of Part 1 of

this stand rd but not sufering any permanent

d mag e

2.4

nom inal voltag e

a v oltag e of28( 14)±1 V d.c

3 Durabi ity a nd environm enta l

3.1 System dura i ity

The sy stem, in a condition equiv alent to new, shal

be tested in ac ord nce with Appendix A and, after

completion of the test, shal comply with the

man facturer’s specification

3.2 Tim e and tem perature stabi ity

The sy stem, in a cond ition eq uiv alent to new, shal

be tested in ac ord ance with Appendix B During

the procedures inB.1 toB.7 andB.9 the sensed

spe d shal not difer f om the set spe d b more

than2 mie/h

3.3 Ele trical power supply

3.3.1 Steady st at e v ltage

3.3.1.1 The sy stem shal fu ction normal y when

connected to a power sup ly in the rang e20V

to3 V( 10V to16V) d.c

3.3.1.2 The sy stem shal be tested at 10V

and4 V( 5V and20V) d c for a period of10min

at each, with a swe p betwe n these ma imum an

minimum v alues The chang e f om nominal v oltag e

to each extreme an f om each extreme to nominal

v oltag e shal take place ov er a time interv al

of10ms

The sy stem ma fai to fu ction but it shal not be

permanently d mag ed and shal return to normal

fu ction when the power sup ly is returned to

normal

3.3.2 R ip le Normal operation of the sy stem shal

not be afected b reg ular or ir eg ular v ariations in

v oltag e a out the prev ai ng sup ly lev el ( exclud ing

transients) not exce d ing3V( 2V) peak to peak in

the rang e10Hz to10kHz

3.3.3 R ever se pola r ity The sy stem ma fai to

fu ction but it shal not be permanently d mag ed

when subjected to a rev er al of polarity of the sup ly

refer ed to in3.3.1.1 for1 min and shal return to

normal fu ction when the power sup ly is returned

to normal

3.3.4 Tr a nsients Tests for immu ity to transients

shal be conducted in ac ord nce with ISO7 3 -1

for1 V sy stems and ISO7 3 -2 for24V sy stems

Transient v oltag e test sev erity lev els are g iv en in

Append ix C

3.3.5 Input/out put pr t ect ion

3.3.5.1 Each output in turn shal withstand

con ection to earth for1min duration, without

permanent d mag e,with the sy stem operating and

shal return to normal fu ction when the con ection

is remov ed

3.3.5.2 Each input in turn shal withstand a

con ection to earth and to sup ly for1 min, without

permanent d mag e,with the sy stem operating and

shal return to normal fu ction when the con ection

is remov ed

3.3.6 Ele tr magnet ic compat ibi it y

3.3.6.1 Sup ly lne inter fer enc W hen tested in

ac ord nce with BS3G10 -4.2:19 0 ( civ il

a plcations), the sy stem shal operate cor ectly

with3V r.m.s intererence, at any f eq uency in the

rang e1 Mhz to15 Mhz, superimposed on either

b t ery sup ly l ne with respect to a reference

g rou d plane

3.3.6.2 Ele tr oma gnetc emis ions Using the test

procedure des ribed in p rag ra h4 of

DIN5 8 9-3:19 1 an with the v alues of

electromag netic emis ions measured on the output

port of a5 7 l ne imped nce sta i zing network

using a CISPR q uasi peak measuring receiv er

( bothof which shal me t the req uirements of

BS727), the sy stem u d er test shal not cause

intererence in the sup ly lne exce d ing the v alues

shown in Ta le 1, or their eq uiv alent if other

equipment is used

Ta le 1 — Ma im um supply l ne

inter erenc levels

3.3.6.3 R F field sus eptbiiy W hen tested in

ac ord ance with the procedure des ribed in DEF

STAN5 -41, Part 3, I sue2:19 6 ( DRSO2 rad iated

sus eptibi ity ) the sy stem shal fu ction normal y

when subjected to an RF field of14 dB

a ov e1 4V/m( 10V/m) ov er a fequency rang e

of1 Mhz to2 0Mhz

3.4 Environm ental prote tion

3.4.1Components of the sy stem shal be subjected to

the folowing tests, after each of which they shal

continue to fu ction normal y

3.4.2 Low temperature storag e test in ac ord ance

with BS201 -2.1A at a temperature of:

a) –25°C for ca mou ted components;

b) –4 °C for eng ine and chas is mou ted

components

The period for this test shal be9 h after the

component has reached the req uired temperature

Return the component to18±2°C at a rate not

exce d ing1 °C/min an test

3.4.3 Using the component tested under3.4.2, car y

out a hig h temperature storag e test in ac ord ance

with BS201 -2.1B at temperature of:

a) +8 °C for ca mou ted components;

b) +14 °C for eng ine mounted components;

c) +10 °C for chas is mou ted components

The period for this test shal be9 h after the

component has reached the req uired temperature

Return the component to18±2°C at a rate not

exce d ing1 °C/min an test

3.4.4 Using the component tested u der3.4.3 car y

out a h midity storag e test in ac ord nce with

BS201 -2.1Z/AD and test after the dry ing period

3.4.5 Using the component tested u der3.4.4 car y

out a sinusoid al v ibration test as g iv en in

Append ix D, an after, test for normal fu ction

3.4.6 S bmit eng ine an chas is mou ted

components tested u d er3.4.5 to a salt mist test in

ac ord nce with BS201 -2.1Ka, for a period of9 h

and after test for normal operation

N T Addi onal tests which ma also b considered b

man facturer are des rib d in App n ix E

4 Ma rking

Each control u it and actuator shal be marked with

the folowing :

a) the n mber of this BritishStand rd,

i.e.BSAU2 7-2

1)

b) the name, tra e mark or other means of

identification of the man facturer;

c) a p rt n mber

Fr quency b nd Measur d level r lative to1

m ic o oltin5 7(+dB)

MHz

0.15 to0.29 7 lev el

0.3 to4.9 6 lev el

5.0 to29 5 lev el

1)

Marking BSAU2 7-2 on or in relaton to a prod ct re resents a man facturer’s declaraton of conformiy, i.e.a claim b or on

b half of the man facturer that the prod ct me ts the re uirements of the stan ard.The acuracy of the claim is therefore solely

the resp nsibiliy of the p r on making the claim.S ch a declaraton is not to b confused wih third p rty certficaton of

conformiy, which ma also b desira le

Appendix A System dura bi ity test

A.1 Con ect the components of a sy stem in ac ord ance with the man facturer’s instructions and where

neces ary a just to simulate max imum loa /trav el cond itions ( wor t case) Con ect a24V( 12V) b t ery

with the charg e maintained at28( 14) ±1 V d.c

A.2 Activ ate the sy stem throug h the folowing test cy cle:

a) d riv e to a ful rang e trav el ( t1);

b) rev er e to z ro output ( t2);

c) d riv e to a mean position (3);

d ) control at mean output for5×( t1+t2+t3);

e) rev er e to z ro output;

where t is the time req uired to complete each ind iv idual operation

A.3 Repeat this test cy cle for25 0 0 cy cles

Appendix B Time and temperatur sta bi ity test

B.1 Con ect up the sy stem in a test chamber at18±2 °C ( se Fig ure 1) to a sup ly of28( 14)±1V d.c

complete with simulation of components of the lo p betwe n the throt le actuator an spe d ( i.e.eng ine and

transmis ion) outside of the test chamber

B.2 Set simulated throt le d emand to ma imum

B.3 Adjust the set spe d of the sy stem where a propriate

B.4 Activ ate the sy stem and the recorder Throug hout the test,B.5 toB.7,record the ma imum dev iation

f om the set spe d

B.5 Allow the sy stem to operate for10h

B.6 Reduce the test chamber temperature to–20±2°C After the temperature of the test chamber has

sta i iz d, operate the sy stem for a further3 min

B.7 Inc ease the test chamber temperature to6 ±2°C After the temperature of the test chamber has

sta i iz d, operate the sy stem for a further3 min

B.8 Inc ease the test chamber temperature to8 ±2°C After the temperature of the test chamber has

sta i iz d, operate the sy stem for a further3 min.The sy stem shal contin e to fu ction but the ac uracy

ma be d eg rad ed

B.9 Reduce the test chamber temperature to6 ±2 °C After the temperature of the test chamber has

sta i iz d, operate the sy stem for a further3 min Record the ma imum d ev iation fom the set spe d

Fig ure 1 — Test la out

Appendix C Transient volta g e test severity levels

Normal fu ction A

Fai but recov er C

Ta le 2 — Transient voltag e test severity levels

Appendix D Sinusoidal vibration test

D.1 Chas is and cab mounted com ponents

D.1.1 G eneral

Subject the component to be tested, mou ted on its normal mou t, complete with its anci lary components,

to a resonance sear h in al thre planes using a sinusoid l wav e form u d er the conditions g iv en inD.1.2

folowed b an endurance test u der the conditions g iv en inD.1.3

D.1.2 Re onanc s arch

D.1.3 Enduranc t est at re onanc fequency

I there is no resonance, car y out a broad swe p end urance test u d er the fol owing cond itions:

D.2 Eng ine m ounted com ponents

D.2.1 G eneral

Subject the component to be tested, mou ted on its normal mount, complete with its anci lary components

to a resonance sear h in al thre planes using a sinusoid l wav e form u d er the conditions g iv en inD.2.2

folowed b an endurance test u der the conditions g iv en inD.2.3

Num be of pulses

or tes tim e

Rem arks

1

V

NOT These v lues are for use in conju cton wih ISO7 3 -1 or ISO7 3 -2 as a pro riate

Freq uency rang e 10Hz to25 Hz

n

Duration Long enoug h to esta l sh resonant f equency

Freq uency rang e 3d B below peak for each resonance

n

Freq uency rang e 10Hz to25 Hz

n

D.2.2 Re onanc s arch

D.2.3 Enduranc te t at re onanc range

I there is no resonance, car y out a broa swe p end urance test u d er the folowing conditions:

Appendix E Additional tests

E.1 General

The tests g iv en inE.2 toE.6 ma be consid ered b sy stem component man facturer

E.2 Chang e of tem perature (therm al shock)

Mou t the component in its normal operating at itud e and test in ac ord ance with test Na of BS201 -2.1N

using the fol owing minimum and ma imum temperatures:

a) –20°C to+6 °C for ca mou ted components;

b) –4 °C to+1 0°C for eng ine mou ted components;

c) –4 °C to+8 °C for chas is mou ted components

S bject the component to20 cy cles and use an ex osure time at each temperature of2h

Return the component to18±2 °C at a rate not exce ding1 °C/min and test for normal operation

E.3 Resistanc to dust

E.3.1 Locate the component in a box9 0mm cube internaly , in its normal operating at itude, on a

pedestal raising it15 mm a ov e the b se of the box, and positioned at least15 mm f om any wal of the

box

Introd uce on the flo r of the box a mixture of4.5kg of fine powdered cement comply ing with BS1 an

ag itate b projecting blasts of air for2s pointed in a downward direction in such a wa that the mixture is

u iformly difused within the box Repeat the cy cle ev ery15min ov er a period of5h

E.3.2 Cond uct the test in ac ord nce with Appendix A for250 0 cy cles and test for normal operation

E.4 Contam ination

Mou t the component in its normal operating at itude and test in ac ord ance with test Rb of BS201 -2.1R

b a ply ing a spray , using the folowing materials at the temperatures stated:

a) At 20±5°C:

1) 1,1,1-trichloro thane ( BS5 0);

2) white spirit ( BS24 );

3) lea ed petrol ( BS4 4 );

4) unlea ed petrol ( BS7 7 );

5) methanol ( BS5 6-1)

Freq uency rang e 4 Hz to2 0 0Hz

n

Duration Long enoug h to esta lsh resonant feq uencies

Freq uency rang e 3d B below peak for each resonance in the rang es4 Hz to20 Hz and20 Hz

to20 0Hz

n

6g

n

Duration

10 7

rev er als at resonant f equency

Freq uency rang e 4 Hz to20 Hz 20 Hz to20 0Hz

n

6g

n

b) At7 ±3°C:

1) d iesel fuel ( clas A1) ( BS28 9-1);

2) eng ine oi ( BS9 3-A16, Annex A No 1 oi ;

3) auto-g earbox/ power ste ring oi ( BS9 3-A16, Annex A, No.2 oi );

4) man al g earbox/ hy poid oi ( BS9 3-A16, Annex A, No.3 oi ;

5) g rease: l thium soa b sed ;

6) brake/ clutch fluid ;

7) hy d raulc power brake fluid;

8) ethy lene g ly col antif e z ( 50% solution)

Visual y inspect the component for sur ace deterioration and test for normal operation

E.5 Driving rain: chas is mounted com ponents

The test chamber shal hav e the dimensions and6 no zle ar ang ement as shown in Fig ure 2 Each no zle

includ es a jet which shal emit a sold cone spra ( a sold cone spra is d efined as one where the water

within the spra is ev enly distributed) Each no zle shal p s 6UKg al/h to10UKg al/ h of

water( 45 mL/min to7 8mL/min)

Mou t the component in the test chamber in its normal operating at itude, positioned so that the centre of

the u it is a proximately6in( 152mm) a ov e the centre of the test chamber flo r an so that the spra

fom al the ang led jets imping es upon the component Leav e any drain holes open and fit al a propriate

electrical lead s and g rommets W here a plca le, protect mou ting and mechanical con ections to simulate

nor mal serv ice cond itions S bject the component to contin ous water spray ing ( ma imum water

temperature4 °C) for a period of25h Allow the test u it to drain for1 h

At the conclusion of the preceding test, test the component for normal operation.The component shal hav e

p s ed the test u les smal g lobules of water are present in the enclosure in such ag g reg ate q uantity as

to be detrimental to the l fe or operation of the component Materials used for the enclosure, includ ing

g askets, if any shal be u afected b water

NOT 1 The comp nent ma subse uently b subjected to a prolong ed storag e an /or en urance test.Any such test re uirements

should b stated in the prod ct sp cificaton

NOT 2 A practcal e aluaton tech ique is to remov e the comp nent after completng the a o e proced re an whilst maintaining

the same mou tng at iu e,transering to a low temp rature environment to cause water fezing , an then test for normal

o eraton

E.6 Mycolog ical

Test in ac ord nce with BS201 -2.1J as folows:

W ash the exterior of the component an the spray ing eq uipment with a2% solution of l q uid deterg ent,

rinse in clean water an thoroug hly d ry

Position the component tog ether with any relev ant anci iary eq uipment in its v ehicle at itud e with al its

con ections mad e, in an env ironmental chamber for24h Maintain the test chamber at a temperature

of32 °C with relativ e h mid ity of not les than9 % without precipitation

Spra the component with a suita ly la el ed aq ue us solution of fu g us spores f om the folowing l st It

is suficient that each p rt be wet ed with solution

Maintain the component in the env ironmental conditions d etaied a ov e in d ark es for a period

of28d y s

Test the component for normal operation

The folowing fung us spores are required in a ue us solutions, as specified

2)

a) A sper gilus niger ;

b) A sper gilus a mstelod a mi;

c) Pa eciomyc s va r ioti;

d ) Sta chybotr ys a tr a ;

e) Cha etomium globsum;

2)

N T For informaton on the a aila iliy of the fu g us sp res,a ply to the Enquiry Secton, Bri shStan ards Inst uton,

Linford W ood, enclosing a stamp d ad res ed env lo e for re ly