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ECE 59

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COUNTRY :E.C.E.

ORIGINAL :UNITED NATIONS of January 18,1983

E/ECE/324 )

Rev.1/Add.58/Amend.3

E/ECE/TRANS/505 ) November 10, 2006

STATUS OF UNITED NATIONS REGULATION

ECE 59

UNIFORM PROVISIONS CONCERNING THE APPROVAL OF:

REPLACEMENT SILENCING SYSTEMS

Incorporating:

Supplement 1 to the 00 series of amendments Supplement 2 to the 00 series of amendments Supplement 3 to the 00 series of amendments

Date of Entry into Force: 28.01.90 Date of Entry into Force: 25.12.94 Date of Entry into Force: 10.10.06

COUNTRY :E.C.E.

ORIGINAL :UNITED NATIONS of January 18,1983

E/ECE/324 )

Rev.1/Add.58/Amend.3

E/ECE/TRANS/505 ) November 10, 2006

UNITED NATIONS

AGREEMENT

CONCERNING THE ADOPTION OF UNIFORM TECHNICAL PRESCRIPTIONS FOR WHEELED VEHICLES, EQUIPMENT AND PARTS WHICH CAN BE FITTED AND/OR BE USED ON WHEELED VEHICLES AND THE CONDITIONS FOR RECIPROCAL

RECOGNITION OF APPROVALS GRANTED ON THE BASIS OF THESE PRESCRIPTIONS (*)

(Revision 2, including the amendments entered into force on October 16, 1995)

Addendum 58: Regulation No. 59

Amendment 3

Supplement 2 to the original version of the Regulation − Date of entry into force: December 25, 1994

Supplement 3 to the original version of the Regulation − Date of entry into force: October 10, 2006

UNIFORM PROVISIONS CONCERNING THE APPROVAL OF

REPLACEMENT SILENCING SYSTEMS

(*)

Former title of the Agreement:

Agreement Concerning the Adoption of Uniform Conditions of Approval and Reciprocal Recognition of Approval for Motor

Vehicle Equipment and Parts, done at Geneva on March 20, 1958.

TITLE: Replacement Silencing

Regulation No. 59

Dec/2006 PAGE: 1

COUNTRY :E.C.E. © InterRegs Ltd 2006

ORIGINAL :UNITED NATIONS of January 18.1983

REGULATION NO. 59

UNIFORM PROVISIONS CONCERNING THE APPROVAL OF

REPLACEMENT SILENCING SYSTEMS

CONTENTS

REGULATION

1. Scope

2. Definitions 3. Application for Approval

4. Markings

5. Approval

6. Specifications 7. Extension of Approval 8. Modification of the Type of Silencing System 9. Conformity of Production 10. Penalties for Non-conformity of Production

11. Production Definitely Discontinues 12. Names and Addresses of Technical Services Responsible for Conducting Approval Tests,

and of Administrative Departments

ANNEXES

Annex 1 − Communication Concerning the Approval (or Refusal or Withdrawal of Approval or

Production Definitely Discontinued) of a Type of Replacement Silencing System or Components of the Said System Pursuant to Regulation No. 59.

Annex 2 − Arrangement of the Approval Mark

Annex 3 − Test Apparatus

Annex 4 − Measuring Points - Back Pressure.

Annex 5 − Checks on Conformity of Production

TITLE: Replacement Silencing

Regulation No. 59

Dec/2006 PAGE: 2

COUNTRY :E.C.E. © InterRegs Ltd 2006

ORIGINAL :UNITED NATIONS of January 18.1983

REGULATION NO. 59

UNIFORM PROVISIONS CONCERNING THE APPROVAL OF

REPLACEMENT SILENCING SYSTEMS

1. SCOPE

(1)

This Regulation covers replacement silencing systems for vehicles of Category M1and N1 .

2. DEFINITIONS

For the purpose of this Regulation,

2.1. Silencing System means a complete set of components necessary for limiting the noise

produced by the engine of a motor vehicle and its exhaust;

2.2. Silencing System Component means one of the separate components which together

form the exhaust system (e.g silencer proper, expansion chamber, resonator);

2.3. Silencing System of Different Types means silencing systems which differ significantly in

such respects as:

2.3.1. that their components bear different trade names or marks,

2.3.2. that the characteristics of the materials constituting a component are different or that the

components differ in shape or size, a modification regarding the coating (zinc coating, aluminium coating, etc.) is not considered changing the type,

2.3.3. that the operating principles of at least one component are different,

2.3.4. that their components are combined differently; 2.4. Replacement Silencing System or Components of Said System means any part of the

exhaust system defined in Paragraph 2.1 above intended for use on a vehicle, other than a part of the type fitted to this vehicle when submitted for type approval pursuant to this Regulation;

2.5. Approval of a Replacement Silencing System or Components of Said System means

the approval of the whole or part of a silencing system adaptable to one or several specified types of motor vehicles, as regards the limitation of their noise level;

2.6. Vehicle Type means a category of motor vehicles which do not differ significantly in such

respects as:

2.6.1. the lines and constituent materials of the body (more particularly the engine compartment

and its soundproofing),

2.6.2. the length and width of the vehicle,

(1)

As defined in the Consolidated Resolution on the Construction of Vehicles (R.E.3), Annex 7 (documents TRANS/WP.29/78/Rev.1/Amend.2 and Amend.4).

TITLE: Replacement Silencing Regulation No. 59 Dec/2006 PAGE: 3

COUNTRY :E.C.E. © InterRegs Ltd 2006

ORIGINAL :UNITED NATIONS of January 18.1983

2.6.3. the type of engine (positive ignition, compression ignition, two stroke or four stroke,

reciprocating or rotary), number and capacity of cylinders, number of carburettors, arrangement of valves, maximum horse-power and corresponding engine speed (rpm), etc.

2.6.4. number and ratios of gears, total ratio of the transmission,

2.6.5. the number, type and arrangement of the exhaust system, and

2.6.6. the number, type and arrangement of the intake systems. 3. APPLICATION FOR APPROVAL 3.1. The application for approval of a replacement silencing system or components of said

system shall be submitted by its manufacturer or by his duly accredited representative.

3.2. It shall be accompanied by the undermentioned documents in triplicate and the following

particulars:

3.2.1. a description of the vehicle type(s) on which the system or components is intended to be

mounted, with regard to the items mentioned in Paragraph 2.6 above. The numbers and/or symbols identifying the engine type and the vehicle type shall be specified and the vehicle type approval number, if necessary;

3.2.2. a description of the assembled silencing system showing the relative position of each of its

components, as well as mounting instructions;

3.2.3. detailed drawings of each component to enable it to be easily located and identified, and a

specification of the material used.

3.3. On request of the technical service conducting the tests for approval, the manufacturer of

the silencing system shall submit;

3.3.1. two samples of the system or components submitted for approval;

3.3.2. a sample of the original silencing system with which the vehicle was equipped when

submitted for type approval;

3.3.3. a vehicle representative of the type of which the system is to be fitted; this vehicle, when

measured for noise emission according to the methods described in Paragraph 3.1. and 3.2. of Annex 3 to Regulation No. 51 must satisfy the following conditions:

3.3.3.1. the noise level when the vehicle is in motion must not exceed the limit applicable to the

category of vehicle concerned at the time when the type to which the vehicle belongs was approved; furthermore, it must not exceed by more than 3 dB(A) the noise level indicated in the approval of the type of which the vehicle belongs;

3.3.3.2. the noise level when the vehicle is stationary must not exceed by more than 3 dB(A) the

reference value indicated in the approval of the type to which the vehicle belongs;

3.3.4. A separate engine, of at least the same cylinder capacity and power as that of the

above-mentioned vehicle.

TITLE: Replacement Silencing

Regulation No. 59

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COUNTRY :E.C.E. © InterRegs Ltd 2006

ORIGINAL :UNITED NATIONS of January 18.1983

4. MARKINGS

4.1. Each component of the replacement silencing system, excluding tubes and mounting

accessories, shall bear:

4.1.1. the trade name or mark of the manufacturer of the system or its components.

4.1.2. the commercial description given by the manufacturer. 4.2. Such markings shall be clearly legible and indelible. 5. APPROVAL

5.1. If the type of replacement silencing system submitted for approval pursuant to this

Regulation meets the requirements of Paragraph 6 below, approval for that type shall be granted.

5.2. An approval number shall be assigned to each type approved. Its first two digits

(at present 00 for the Regulation in its original form) shall indicate the series of amendments incorporating the most recent major technical amendments made to the Regulation at the time of issue of the approval. The same Contracting Party may not assign the same number to another type of replacement silencing system or component designed for the same type(s) of vehicle.

5.3. Notice of approval or of refusal of approval of a replacement silencing system or

components of said system pursuant to this Regulation shall be communicated to the Parties to the Agreement which apply this Regulation, by means of a form conforming to the model in Annex 1 to the Regulation, and of drawings of the silencing system or components supplied by the applicant for approval, in a format not exceeding A4 (210 x 297 mm) or folded to that format and on an appropriate scale.

5.4. There shall be affixed to every component of silencing system conforming to a type

approved under this Regulation an international approval mark consisting of:

5.4.1. a circle surrounding the letter \"E\" followed by the distinguishing number of the country which

(1)

has granted approval;

5.4.2. the number of this Regulation, followed by the letter \"R\

the right of the circle prescribed in Paragraph 5.4.1;

5.4.3. the approval number shall be mentioned in the approval form, as well as the method used

for approval tests.

5.5. The approval mark shall be easily legible and indelible, when the silencing system is

mounted on the vehicle.

1 for the Federal Republic of Germany, 2 for France, 3 for Italy, 4 for the Netherlands, 5 for Sweden, 6 for Belgium, 7 for

Hungary, 8 for Czechoslovakia, 9 for Spain, 10 for Yugoslavia, 11 for the United Kingdom, 12 for Austria, 13 for Luxembourg, 14 for Switzerland, 15 for the German Democratic Republic, 16 for Norway, 17 for Finland, 18 for Denmark, 19 for Romania, 20 for Poland and 21 for Portugal. Subsequent numbers shall be assigned to other countries in the chronological order in which they ratify or accede to the Agreement concerning the Adoption of Uniform Conditions of Approval and reciprocal Recognition of Approval for Motor Vehicle Equipment and Parts, and the numbers thus assigned shall be communicated by the Secretary-General of the United Nations to the Contracting Parties to the Agreement

(1)

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COUNTRY :E.C.E. © InterRegs Ltd 2006

ORIGINAL :UNITED NATIONS of January 18.1983 5.6. A component may be marked with more than one approval number if it has been approved

as a part of more than one replacement silencing system; in this case the circle need not be repeated. Annex 2 to this Regulation gives an example of the arrangement of the approval mark.

6. SPECIFICATIONS 6.1. General Specifications

6.1.1. The replacement exhaust system or components thereof must be designed, constructed and

capable of being mounted so as to ensure that the vehicle complies with the provisions of this Regulation under normal conditions of use, notwithstanding any vibrations to which it may be subject.

6.1.2. The silencing system or components thereof must be designed, constructed and capable of

being mounted so that reasonable resistance to the corrosion phenomenon to which it is exposed is obtained having regard to the conditions of use of the vehicle.

6.2. Specifications Regarding Noise Levels

6.2.1. The acoustic efficiency of the replacement silencing system or components of said system

shall be certified by means of the methods described in Paragraph 3.1. and 3.2. of Annex 3 to Regulation No. 51.

When the replacement silencing system or components thereof is mounted on the vehicle described in Paragraph 3.3.3. above, the noise levels obtained using the two methods (stationary and running vehicle) shall satisfy one of the following conditions:

6.2.1.1. they shall not exceed the values obtained with the type of vehicle concerned when submitted

for approval,

6.2.1.2. they shall not exceed the noise values measured on the vehicle referred to in

Paragraph 6.2.1. above, when this is fitted with an exhaust silencing system corresponding to the type fitted to the vehicle when submitted for type approval.

6.3. Measurement of the Vehicle Performances

6.3.1. The replacement exhaust system or components thereof must be such as to ensure that

vehicle performance is comparable with that achieved with the original equipment system or component thereof.

6.3.2. The replacement silencing system or, depending on the manufacturer's choice, the

components of said system shall be compared with an original silencing system or components, which are also in new condition, successively mounted on the vehicle mentioned in Paragraph 3.3.3. above.

6.3.3. The verification shall be carried out by measuring the back pressure pursuant to

Paragraph 6.3.4. below.

The value measured with the replacement silencing system shall not exceed the value measured with the original standard silencing system by more than 25% under the conditions mentioned below.

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COUNTRY :E.C.E. © InterRegs Ltd 2006

ORIGINAL :UNITED NATIONS of January 18.1983

6.3.4. Test Method

6.3.4.1 Test Method With Engine

The measurements shall be conducted on the engine referred to in Paragraph 3.3.4. above coupled to a dynamometer. With the throttle completely open, the bench shall be adjusted so as to obtain the engine speed(s) corresponding to the rated maximum power of the engine. For the measurement of back pressure, the distance at which the pressure tap shall be placed from the exhaust manifold is indicated in Annex 4 of this Regulation.

6.3.4.2 Test Method With Vehicle

The measurements shall be carried out on the vehicle referred to in Paragraph 3.3.3. above.

The test shall be conducted:

either on the road,

or on a roller dynamometer.

With the throttle completely open, the engine must be loaded so as to obtain the engine speed corresponding to the rated maximum power of the engine (engine speed S).

For the measurement of back pressure, the distance at which the pressure tap shall be placed from the exhaust manifold is indicated in Annex 4 to this Regulation.

6.4. Additional Specifications Regarding Silencing Systems or Components Filled With

Fibrous Materials

Absorbing fibrous materials may be used in silencing systems or components only when it is established by appropriate means of design and manufacturing, that the efficiency of the system in traffic conditions is sufficient to comply with the existing regulations. Such a silencing system is deemed to be effective in traffic conditions if the exhaust gas is not in contact with the fibrous materials or if, the silencing system being emptied of its absorbing materials and tested on vehicle in conformity with the procedures described in Regulation No. 51, Annex 3, Paragraph 3.1. and 3.2., the acoustic pressure levels comply with the provisions laid down in Paragraph 6.2. above.

If that condition is not fulfilled, the complete silencing system shall be submitted to conventional conditioning using one of the three installations and procedures described below. When the procedure described in Paragraph 6.2.1.2. above is employed, the applicant for approval may ask for the emptying or the conditioning of the original silencing system.

6.4.1. Continuous Road Operation for 10 000 km

6.4.1.1. About half this operation shall consist of town driving and the other half of long-distance runs

at high speed: continuous road operation can be replaced by a corresponding test-track programme.

6.4.1.2. The two engine speeds must be alternated several times.

6.4.1.3. The complete test programme must include a minimum of 10 breaks of at least three-hour

duration in order to reproduce the effects of cooling and any condensation which may occur.

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COUNTRY :E.C.E. © InterRegs Ltd 2006

ORIGINAL :UNITED NATIONS of January 18.1983

6.4.2. Conditioning on a Test Bench

6.4.2.1. Using standard parts and observing the vehicle manufacturer's instructions, the silencer

must be fitted to the engine, which is coupled to a dynamometer.

6.4.2.2. The test must be conducted in six six-hour periods with a break of at least 12 hours between

each period in order to reproduce the effects of cooling and any condensation which may occur.

6.4.2.3. During each six-hour period, the engine shall be run under the following conditions in turn:

(1) five minutes at idling speed;

(2) one-hour Sequence under 1/4 load at 3/4 of rated maximum speed (S);

(3) one-hour Sequence under 1/2 load at 3/4 of rated maximum speed (S);

(4) 10-minute sequence under full load at 3/4 of rated maximum speed (S);

(5) 15-minute sequence under 1/2 load at rated maximum speed (S);

(6) 30-minute sequence under 1/4 load at rated maximum speed (S);

Total duration of the six sequences: three hours.

Each period must comprise two sets of the six above-mentioned sequences.

6.4.2.4. During the test, the silencer must not be cooled by a forced draught simulating normal

airflow around the vehicle. Nevertheless, at the request of the manufacturer, the silencer may be cooled in order not to exceed the temperature recorded at its inlet when the vehicle is running at maximum speed.

6.4.3. Conditioning by Pulsation

The exhaust system or components of said system is/are fitted to the vehicle referred to in Paragraph 3.3.3. above or the engine referred to in Paragraph 3.3.4. In the former case, the vehicle must be mounted on a roller dynamometer, and, in the second case, the engine must be mounted on a dynamometer.

The test apparatus described below is fitted at the outlet of the silencing system.

6.4.3.1. Test Apparatus

The test apparatus, a detailed diagram of which is shown in Annex 3 to this Regulation must be fitted at the outlet of the exhaust system. Any other apparatus providing equivalent results is acceptable.

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COUNTRY :E.C.E. © InterRegs Ltd 2006

ORIGINAL :UNITED NATIONS of January 18.1983

6.4.3.2 Test Procedure

6.4.3.2.1 The test apparatus shall be adjusted in such a way that the exhaust gas flow is alternately

interrupted and re-established by the quick action valve for 2 500 cycles.

6.4.3.2.2 The valve is opened when the exhaust gas pressure, measured at 100 mm at least

downstream from the intake flange, reaches a value between 0,35 and 0,40 bar. It is closed when this pressure does not differ by more than 10% from its stabilised value, measured with the valve open.

6.4.3.2.3 The time delay switch shall be set for the duration of gas exhaust resulting from the

provisions laid down in Paragraph 6.4.3.2.2. above.

6.4.3.2.4 Engine speed shall be 75% of the speed S at which, according to the manufacture, the

engine develops maximum power.

6.4.3.2.5 The power indicated by the dynamometer shall be 50% of the full throttle power measured at

75% of engine speed (S).

6.4.3.2.6 Any drain holes shall be closed off during the test.

6.4.3.2.7 The entire test must be completed within 48 hours. If necessary, one cooling period will be

observed after each hour.

6.4.3.2.8 After conditioning, the noise level is checked pursuant to Paragraph 6.2 above.

7. EXTENSION OF APPROVAL

The silencing system manufacturer or his duly accredited representative may ask the administrative department which has granted the approval of the silencing system for one or several types of vehicles, for an extension of the approval to other types of vehicles.

The procedure is that described in Paragraph 3 above.

Notice of the extension of approval (or refusal of extension) shall be communicated to the Parties to the Agreement which apply this Regulation in accordance with the procedure specified in Paragraph 5.3. above.

8. MODIFICATION OF THE TYPE OF SILENCING SYSTEM 8.1. Every modification of the type of replacement silencing system shall be notified to the

administrative department which approved the type of silencing system. The said department may then either:

8.1.1. consider that the modifications made are unlikely to have an appreciable adverse effect, or

8.1.2. require a further test report from the technical service responsible for conducting the tests. 8.2. Confirmation or refusal of approval, specifying the alterations shall be communicated by the

procedure specified in Paragraph 5.3. above to the Parties to the Agreement applying this Regulation.

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Regulation No. 59

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COUNTRY :E.C.E. © InterRegs Ltd 2006

ORIGINAL :UNITED NATIONS of January 18.1983 9. CONFORMITY OF PRODUCTION 9.1. Every replacement silencing system or component thereof bearing an approval mark as

prescribed under this Regulation shall conform to the type of silencing system approved and satisfy the requirements of Paragraph 6 above.

9.2. In order to verify conformity as prescribed in Paragraph 9.1 above, adequate monitoring of

the production shall be carried out.

9.3. The holder of the approval shall in particular:

9.3.1. ensure existence of procedures for the effective control of the quality of products;

9.3.2. have access to the control equipment necessary for checking the conformity of each

approved type;

9.3.3. ensure that data of test results are recorded and that annexed documents shall remain

available for a period to be determined in accordance with the administrative service;

9.3.4. analyse the results of each type product in order to verify and ensure the stability of the

product characteristics, making allowance for the variation of an industrial production;

9.3.5. ensure that for each type product at least the tests prescribed in Annex 5, point 2, are

carried out;

9.3.6. ensure that sampling or test pieces giving evidence of non-conformity with the type of test

considered shall give rise to another sampling and another test. All the necessary steps shall be taken to re-establish the conformity of the corresponding production.

9.4. The competent authority which has granted type-approval may at any time verify the

conformity control method applicable to each production unit.

9.4.1. At every inspection, the test books and production survey records shall be presented to the

visiting inspector.

9.4.2. The inspector may take samples at random which will be tested in the manufacturer's

laboratory. The minimum number of samples may be determined according to the results of the manufacturer's own verification.

9.4.3. When the quality level appears unsatisfactory or when it seems necessary to verify the

validity of the tests carried out in application of Paragraph 9.4.2. above, the inspector shall select samples to be sent to the technical service which has conducted the type approval tests.

9.4.4. The competent authority may carry out any test prescribed in this Regulation.

9.4.5. The normal frequency of inspections by the competent authority shall be one every two

years. If unsatisfactory results are recorded during one of these visits, the competent authority shall ensure that all necessary steps are taken to re-establish the conformity of production as rapidly as possible.

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Regulation No. 59

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ORIGINAL :UNITED NATIONS of January 18.1983 10. PENALTIES FOR NON-CONFORMITY OF PRODUCTION

10.1. The approval granted in respect of a type of silencing system pursuant to this Regulation

may be withdrawn if the requirements laid down in Paragraph 9 above are not complied with, or if the silencing system or components fail to pass the tests provided for in Paragraph 9.2. above.

10.2. If a Party to the Agreement which applies this Regulation withdraws an approval it has

previously granted, it shall forthwith so notify the other Contracting Parties applying this Regulation, by means of a copy of the approval form bearing at the end, in large letters, the signed and dated annotation \"APPROVAL WITHDRAWN\".

11. PRODUCTION DEFINITELY DISCONTINUED

If the holder of the approval completely ceases to manufacture a type of replacement silencing system or components of the said system in accordance with this Regulation, he shall so inform the authority which granted the approval. Upon receiving the relevant communication, that authority shall inform thereof the other Parties to the Agreement applying this Regulation by means of a copy of the approval form bearing at the end, in large letters, the signed and dated annotation: \"PRODUCTION DISCONTINUED\".

12. NAMES AND ADDRESSES OF TECHNICAL SERVICES RESPONSIBLE FOR

CONDUCTING APPROVAL TESTS, AND OF ADMINISTRATIVE DEPARTMENTS

The Parties to the Agreement which apply this Regulation shall communicate to the United Nations Secretariat the names and addresses of the technical services responsible for conducting approval tests and of the administrative departments which grant approval and to which forms certifying approval or refusal or withdrawal of approval, issued in other countries, are to be sent.

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COUNTRY :E.C.E.

ORIGINAL :UNITED NATIONS of January 18.1983

ANNEX 1

(Maximum format: A4 (210 x 297 mm))

Name of administration

Communication Concerning the Approval (or Refusal or Withdrawal of Approval or Production Definitely Discontinued) of a Type of Replacement Silencing System or Components of the Said System Pursuant

to Regulation No. 59

Approval No ................................................................................................................................................... 1. Trade name or mark of the silencing system ............................................................................ 2. Type of the silencing system......................................................................................................

3. Manufacturer's name and address............................................................................................

...................................................................................................................................................

4. If applicable, name and address of manufacturer's representative...........................................

...................................................................................................................................................

(1)

5. Brief description of the silencing (with/without fibrous material, etc).....................................

...................................................................................................................................................

6. Trade name or mark of the vehicle type for which the silencing system is intended.................

...................................................................................................................................................

7. Vehicle type, starting from serial number:.................................................................................

(1) Strike out whatever does not apply.

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Regulation No. 59

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ORIGINAL :UNITED NATIONS of January 18.1983 8. Kind of engine: positive-ignition, compression ignition..............................................................

...................................................................................................................................................

9. Cycles: two-stroke or four-stroke...............................................................................................

10. Cylinder capacity........................................................................................................................

11. Engine Power (kW ECE)............................................................................................................

12. Number of gears........................................................................................................................

13. Gears used.................................................................................................................................

14. Final drive ratio(s)......................................................................................................................

15. Maximum power.........................................................................................................................

16. Load conditions of vehicle during test........................................................................................

17. Sound levels: Vehicle in motion.......................................................dBA at steady speed before acceleration of........................................................................................................................................km/h Vehicle stationary.....................................................................dBA with engine running at rpm 18. Value of the back pressure:....................................................................................................... 19. Silencing system submitted: For approval on...........................................................................

For extension of approval on..................................................................................................... 20. Technical service responsible for conducting approval tests....................................................

...................................................................................................................................................

21. Date of report issued by that service......................................................................................... 22. Number of report issued by that service....................................................................................

(1) 23. Approval granted/refused

24. Position of approval mark on the vehicle...................................................................................

25. Place..........................................................................................................................................

26. Date............................................................................................................................................

Strike out whatever does not apply

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ORIGINAL :UNITED NATIONS of January 18.1983

27. Signature.................................................................................................................................... 28. The following documents, bearing the approval number shown above, are annexed to this

communications:

.............................................................drawings, diagrams and plans of the silencing system

.........................................................................................Photographs of the silencing system

.........................................list of components, duly identified constituting the silencing system

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ORIGINAL :UNITED NATIONS of January 18.1983

ANNEX 2

ARRANGEMENT OF THE APPROVAL MARK

(See Paragraph 5.4 of this Regulation)

The above approval mark affixed to a component of silencing system shows that the replacement silencing system type concerned has been approved in the Netherlands (E 4) pursuant to Regulation No 59 under approval number 002439. The first two digits of the approval number indicate that the approval was granted in accordance with the requirements of Regulation No. 59 in its original form.

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ORIGINAL :UNITED NATIONS of January 18.1983

ANNEX 3

TEST APPARATUS

1. Inlet flange or sleeve - connection to the rear of complete silencing system to be

tested

2. Regulation valve (hand operated) 3. Compensating reservoir from 35 to 40 litres 4. Pressure switch 0.05 to 2.5 bar - to close item 7. 5. Time delay switch - to close item 7 6. Counter of impulses 7. Quick response valve, such as the valve of an exhaust brake system of 60 mm in

diameter, operated by a pneumatic cylinder with an output of 120 N at 4 bar. The response time, both when opening and closing, must not exceed 0.5 second

8. Exhaust gas evacuation 9. Flexible pipe 10. Pressure gauge

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ORIGINAL :UNITED NATIONS of January 18.1983

ANNEX 4

MEASURING POINTS - BACK PRESSURE

Examples of possible measuring points for loss-of-pressure tests. The exact measuring point shall be specified in the test report. It shall be in an area where gas flow is regular.

Figure 1

(1)

Figure 2

Figure 3

If not possible, refer to Figure 3

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ORIGINAL :UNITED NATIONS of January 18.1983

ANNEX 5

CHECKS ON CONFORMITY OF PRODUCTION

1. GENERAL

These requirements are consistent with tests to be held to check conformity of production, according to Paragraphs 9.3.5. and 9.4.3. of this Regulation.

2. TESTING PROCEDURES

The methods of testing, measuring instruments and interpretation of results shall be those described in Paragraph 6 above. The exhaust system or component under test shall be subjected to the test as described in Paragraphs 6.2., 6.3. and 6.4. above.

3. SAMPLING

An exhaust system or component has to be chosen. If after the test of Paragraph 4.1. the sample is not considered to conform to the requirements of this Regulation two more samples have to be tested.

4. EVALUATION OF THE RESULTS 4.1. If the sound levels of the exhaust system or component tested pursuant to Paragraphs 1 and 2,

measured in accordance with Paragraph 6.2. above, do no exceed by more than 1 dB(A) the level measured during the type-approval tests of this type of exhaust system or component, the exhaust system or component type shall be considered to conform to the requirements of this Regulation.

4.2. If the exhaust system or component tested according to Paragraph 4.1. does not satisfy the

requirements laid down in that Paragraph, two more exhaust systems or components of the same type must be tested pursuant to Paragraphs 1 and 2 above.

4.3. If the sound level of the second and/or third sample of Paragraph 4.2. exceeds by more than

1 dB(A) the level measured during the type-approval tests of this type of exhaust system or component, the exhaust system or component type shall be considered not to conform to the requirements of this Regulation and the manufacturer shall take the necessary measures to re-establish the conformity.

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Regulation No. 59

Dec/2006 PAGE: 18

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