and share experiences on ECE Regulation implementation with a continuing support from many Meeting on UN/ECE R13H, Braking for Passenger Vehicles . Regulation No H of the Economic Commission for Europe of the United Nations (UN/ECE) — Uniform provisions concerning the approval of passenger cars. ECE Regulation 90 (abbreviated “ECE R90”) is an ECE Regulation specifying design, construction, and performance requirements and test protocols for.
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Data processing for the BAS.
Zero lateral velocity sce the BOS point. Adjustment specifications of the load sensing valve: Vehicles fitted with an electric regenerative braking system of category A.
Type-approval to R90 is required for all replacement brake linings throughout the European Union and in non-European countries that have adopted ECE Regulations. The application for approval of a vehicle type with regard to braking shall be submitted by the vehicle manufacturer or by his duly accredited representative.
The test vehicle is driven around a circle 30 meters in diameter at a speed that produces a lateral acceleration of approximately 0,5 to 0,6 g for three clockwise laps followed by three anticlockwise laps. The brake pedal force FABS is the minimum pedal force that has to be applied for a given vehicle in order to achieve maximum deceleration which indicates that ABS is fully cycling.
Priorities of signals on multiplexed data paths shall be stated, wherever priority may be an issue affecting performance or safety as far as this Regulation is concerned. General conditions for heavy vehicles and buses depending on the vehicle category:.
The braking force can be easily regulated with sufficient precision. TESTS Braking tests which the vehicles submitted for approval are required to undergo, and the braking performance required, are described in Annex 3 to this Regulation. Test conditions Test vehicle loading condition: Vehicles equipped with a hydraulic braking system with stored energy which cannot meet the requirements of paragraph 5. All ballast shall be secured in a way that prevents it from becoming dislodged during testing.
Brake linings shall be visually inspected on completion of the above tests to check that they are in satisfactory condition for continued use in normal service.
ECE Regulation 90 – Wikipedia
Auxiliary equipment may be supplied with energy from the electric transmission of the parking braking system provided that the supply of energy is sufficient to allow the actuation of the parking braking system in addition to the vehicle electrical load under non-fault conditions.
A number of tests at increments of line pressure shall be carried out r13n determine the maximum braking rate of the vehicle z max. A sampling rate for data acquisition of at least Hz is required. The warning signal shall be constant not flashing. D13h vehicle shall be laden, the distribution of its mass among the axles being that stated by the manufacturer; where provision is made for several arrangements of the load on the axles the distribution of the maximum mass among the axles shall be such that the mass on each axle is proportional to the maximum permissible mass for each axle.
This calculation shall be made for each axle having at least one directly controlled wheel. The transmission is divided into two independent functions: The methods used to establish the zeroing range are defined in paragraphs 5.
For each brake application prescribed in paragraph 3 e above, determine the slope brake factor and pressure axis intercept brake hold-off pressure of the linear least squares equation best describing the measured torque output at each braked wheel as a function of measured dce pressure applied at the same wheel. This condition shall be met by means of devices which can easily be actuated when the vehicle is stationary, or by automatic means. The vehicle is subjected to two series of test runs using a steering pattern of a sine wave at 0,7 Hz frequency with a ms delay beginning at the second peak amplitude as shown in Ecee 2 the Sine with Dwell tests.
Aliasing errors In order to avoid uncorrectable aliasing errors, the analogue signals shall be appropriately filtered before sampling and digitising. Alternative measuring methods to those referred to in paragraph 2.
The stopping distance shall be the distance covered by the vehicle from the moment when the driver begins to actuate the control of the sce system until the moment when the vehicle stops; the initial speed shall be the speed at the moment when the driver begins to actuate the control of the braking system; the initial speed shall not be less than 98 per cent of the prescribed speed for the test in question.
Alternatively, a sensing device per wheel twin wheels are considered as a single wheelwhich will warn the driver at his driving position when lining replacement is necessary, is acceptable. In case of compressed air brake systems, e. Vehicles fitted for invalid drivers.
ECE Regulation 90
Shall remain continuously exe for as long as the ESC is in a mode that renders it unable to satisfy the requirements of paragraphs 3, 3. A different type of braking equipment, with more particular reference to the presence or otherwise of equipment for braking a trailer or any presence of electric braking system. To replicate a level of state of charge in the batteries for comparative tests, such as those of paragraph 1.
Provisions for the periodic technical inspection of braking systems. A diagram of assembled braking equipment and an indication of the position of its components on efe vehicle. An approval number shall be assigned to each type approved, its first two digits shall indicate the series of amendments incorporating the most recent major technical amendments made to the Regulation at the time of issue of the efe.
The time delay for all filter orders is: Additional requirements for vehicles equipped with electric regenerative braking systems. In order to verify r13 requirements of paragraph 3. Special additional requirements for eec braking systems with electric control transmission:. In the event of a failure in the energy source, whilst the vehicle is stationary and the parking ecf system applied, the energy in the reservoir shall be sufficient to actuate the lights even when the brakes are applied.
The vehicle stability function shall be demonstrated by the vehicle manufacturer to the Type Approval Authority or Technical Service by simulating the dynamic manoeuvres of paragraph 5. Where ecr vehicle is equipped with a service braking system which is totally or partially dependent on a source of energy other than the muscular effort of the driver, the following requirements shall be satisfied:.
For each of these valid tests the vehicle deceleration shall be plotted as a function of the recorded brake pedal force. Identification code of brake discs covered by the braking system approval … 2. The Parties to the Agreement applying this Regulation shall communicate to the United Nations secretariat the names and addresses of the Technical Services responsible for conducting approval d13h and of the Type Approval Authorities which grant approval and to which forms, certifying approval or extension or refusal or withdrawal of approval, issued in other countries, are to be sent.