ECE R79 PDF

July 22, 2020   |   by admin

This Regulation applies to the behaviour of the steering mechanism of motor vehicles of category M1, and vehicles of category N1, with the maximum. ECE UNIFORM PROVISIONS CONCERNING THE APPROVAL OF: VEHICLES WITH REGARD TO STEERING EQUIPMENT Incorporating: Supplement 1. Regulation No 79 of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of vehicles with.

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Uniform Provisions Concerning the Approval of: Vehicles with Regard to Steering Equipment. NET Our online subscription service, offering immediate access to our extensive library of global vehicle regulations, standards and legislation. Supplement 1 to the 00 series of amendments Date of Entry into Force: Application for Approval 4.

Penalties for Non-conformity of Production 9. Modification and Extension of Approval of the Vehicle Type Production Definitely Discontinued This Regulation does not apply to: Steering equipment with a purely pneumatic transmission; 1.

Autonomous Steering Systems as defined in Paragraph 2. Type of steering equipment, steering control, steering transmission, steered wheels, and energy source.

The steering equipment consists of: The steering control, The steering transmission, The steered wheels, The energy supply, if any. For steering equipment in which the steering forces are provided solely or partly by the muscular effort of the driver the steering control includes all parts up to the point where the steering effort is transformed by mechanical, hydraulic or electrical r97.

It also includes any storage reservoirs for the operating medium and the return lines, but not the vehicle’s engine except for the purpose of Paragraph 5. E79 the case of any other form of control it means the distance between its centre of rotation and the point at which the steering effort is applied. If more than one such point is eece, the one requiring the greatest effort shall be used.

Depending on the arrangement of the steered wheels, the following types of steering equipment are distinguished: This includes all wheels which are steered in the same direction; 2. Types of Steering Transmission Depending on the way the steering forces are transmitted, the following types of steering transmission are distinguished: However, in the case where any mechanical part of the transmission is designed only to give position feedback and is too weak to transmit the total sum of the steering forces, this r9 shall be considered to be purely hydraulic or purely electric steering transmission.

It comprises the electrical wiring and connector and includes the parts for data communication and the electrical energy supply for the trailer control transmission.

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If the vehicle conforms to a vehicle type approved, under one or more other Regulations annexed to the Agreement, in the wce which has granted approval rce this Regulation, the symbol prescribed in Paragraph 4. The approval mark shall be clearly legible and shall be indelible. F79 approval mark shall be placed close to or on ecf vehicle data plate affixed by the manufacturer.

Annex 2 to this Regulation gives examples of arrangements of approval marks. The steering equipment shall ensure easy and safe handling of the cee up to its maximum design speed or in case of a trailer up to its technically permitted maximum speed. There must be a tendency to self-centre when tested in accordance with Paragraph 6. The vehicle shall meet the requirements of Paragraph 6.

If a vehicle is fitted with an auxiliary steering system, it shall also meet the requirements of Annex 4.

Trailers equipped with hydraulic steering transmissions sce comply also with Annex 5. It must be possible to travel along a straight section of road without unusual steering correction by the driver and without unusual vibration in f79 steering system at the maximum design speed of the vehicle.

Adjustment devices for steering geometry must be such that after adjustment a positive connection can be established between the adjustable components by appropriate locking devices. Steering transmission which can be disconnected to cover different configurations of a vehicle e. Steered Wheels The steered wheels shall not be solely the rear wheels. This requirement does efe apply to semi-trailers. Energy Supply The same energy supply may be used for the steering equipment and other systems.

However in the case of a failure in any system which shares the same energy supply steering shall be ensured in accordance with the relevant failure conditions of Paragraph 5. Control Systems The requirements of Annex 6 shall be applied to the safety aspects of electronic vehicle control systems that provide or form part of the control transmission of the steering function including advanced driver assistance steering systems.

However, systems or functions, that use f79 steering system as the means of achieving a higher level objective, are subject to Annex 6 only insofar as they have a direct effect on the steering system.

If such systems are provided, they shall not be deactivated during type approval testing of the steering system. Special Provisions for Trailers 5. Trailers with the exception of semi-trailers and centre-axle trailers which have more than one axle with steered wheels and semi-trailers and centre-axle trailers which have at least one axle with steered wheels must fulfil the conditions given in Paragraph 6.

However, for d79 with self-tracking steering equipment a test under Paragraph 6. However for trailers with self-tracking steering equipment, the axle load ratio between unsteered or articulated steered axles and friction-steered axles shall be at least 1 under all loading conditions.

If the towing vehicle of a vehicle combination is driving straight ahead, the trailer and towing vehicle must remain aligned. If alignment is not retained automatically, the trailer must be equipped with a suitable adjustment facility for maintenance. Power Assisted Steering Systems 5.

Should the engine stop or a part of the transmission fail, with the exception of those parts listed in Paragraph 5. Full Power Steering Systems 5. In case of a failure within the control transmission, with the exception of those parts listed in Paragraph 5.

The test eece shall begin at an energy storage level given in Paragraph 5. In the event of a failure within the energy transmission, with the exception of those parts listed in Paragraph 5.

The energy level to be used for the tests referred to in Paragraphs 5. In the case of electrically powered systems subject to Annex 6, this level shall be the worst case situation outlined by the manufacturer in the documentation submitted in connection with Annex 6 and shall take into account the effects of e. As far as practicable and subject to agreement between the vehicle manufacturer and the type approval authority, the steering equipment and its installation shall be so designed that, without disassembly, its operation can be checked with, if necessary, commonly used measuring instruments, methods or test equipment.

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It must be possible to verify in a simple way the correct operational status of those Electronic Systems, which have control over steering. If special information is needed, this shall be made freely available.

At the time of Type Approval the means implemented to protect against simple unauthorized modification to the operation of the verification means chosen by the ecf e. Ecce this protection requirement is fulfilled when a secondary means of checking the correct operational status is available.

The test shall be conducted on a level surface affording good adhesion.

ECE regulations: ECE R Supplement 4

During the test s the vehicle shall be loaded to its technically permissible maximum mass and its technically permissible maximum load on the steered axle s. In the case of axles fitted with ASE, this test shall be repeated with the vehicle loaded to its technically permissible maximum mass and the axle equipped with ASE loaded to its maximum permissible load.

Before the test begins, the tyre pressures shall be as prescribed by the manufacturer for the mass specified in Paragraph 6. In the case of any systems that use electrical energy for part or all of the energy supply, all performance tests shall be carried out under conditions of actual or simulated electrical load of all essential systems or systems components which share the same energy supply.

Essential systems shall comprise at least lighting systems, windscreen wipers, engine management and braking systems. Provisions for Motor Vehicles 6. It must be possible to leave a curve with a radius of 50m at a tangent without unusual vibration in the steering equipment at the following speed: Provisions for Trailers 6. With the towing vehicle and trailer having adopted a steady state turn corresponding to a turning circle radius of 25m see Paragraph 2. No part of the trailer must move more than 0.

This requirement must be met from the point the tangent meets the circle to a point 40m along the tangent. After that point the trailer must fulfill the condition specified in Paragraph 6. There shall not be any increase in the outer radius of the swept annular width. The tests described in Paragraphs 6. The holder of the approval must ensure that results of the conformity of production tests are recorded and that the annexed documents remain available for a period determined in agreement with the approval authority or technical service.

This period must not exceed 10 years counted from the time when production is definitely discontinued. The type approval authority or technical service which has granted type approval may at any time verify the conformity control methods applied in each production facility.

The normal frequency of these verifications shall be once every two years. A4 x mm issued by: Trade name or mark of vehicle Manufacturer’s name and address If applicable, name and address of manufacturer’s representative Brief description of the steering equipment: Type of steering equipment Results of tests, vehicle characteristics