Description of test. The hydrogen emission test (Figure 7.1 of the present annex) is conducted in order to determine hydrogen emissions during the charge procedures of the REESS with the charger. The test consists in the following steps:
(a) Vehicle/REESS preparation,
(b) Discharge of the REESS,
(c) Determination of hydrogen emissions during a normal charge,
(d) Determination of hydrogen emissions during a charge carried out with the charger failure.
Description of test. The protective housing is placed horizontally in a device in such a way that it is possible to lock the attachment support adjusters firmly. In the direction of the largest dimension of the housing, the end closest to the point of attachment on the adjuster for the support shall be immobilized by a 15 mm-wide rigid stop covering the entire width of the housing. At the other end, a stop identical to the one described above is placed on the housing so that the specified test load can be applied to it (Figure 2). The end of the housing opposite to that where the force is exerted may be locked rather than held in position as shown in Figure 2.
Description of test. 7.4.1.1.1. Principle The rotation-inducing forces caused by projections on the helmet and friction against the outer surface of the helmet which occur when a helmeted headform is dropped vertically on to an inclined anvil are measured in the longitudinal axis of the anvil. The peak force and its integral with respect to time over the duration of the positive impulse are used as performance criteria.
7.4.1.1.2. Selection and positioning of the helmet
7.4.1.1.2.1. An appropriate size helmet shall be selected to fit the headform referred to in paragraph 7.4.
Description of test. 7.4.2.1.1. Principle The rotation-inducing forces caused by projections on the helmets and friction against the outer surface of the helmets are assessed firstly by a shear impact on the projections using a shear edge against which the projections shall shear away, be detached, or permit the shear edge to slide past the projections. The friction is assessed by the displacement of a carriage abrading the outer surface of the helmet. The shear impact and abrading carriage displacement are generated by a drop weight device.
7.4.2.1.2. Positioning of the helmets
7.4.2.1.2.1. The helmet is placed on a headform of appropriate size in accordance with the requirements of annex 5. The helmet is tipped towards the rear so that the front edge of the helmet in the median plane is displaced by 25 mm; if the helmet includes an adjustable chin strap, the strap shall be tightened as much as possible. The headform shall be so positioned that the chosen location on the helmet can be positioned in contact with the upper surface of the horizontal carriage.
7.4.2.1.2.2. The helmet shall be tested in any condition in which it may be placed on the market, that is both with and without accessories if they are supplied as original equipment. Helmets placed on the market with a visor shall be tested with the visor in the closed position.
7.4.2.1.3. Test
7.4.2.1.3.1. Test of projection The headform is adjusted in order to have the chosen projection on the carriage so that the shear edge is positioned 50 mm from the projection and makes lateral contact with the projection after the drop weight is released from its upper position.
7.4.2.1.3.2. Test of outer surface
Description of test. 7.4.2.1.1. Principle The rotation-inducing forces caused by projections on the helmets and friction against the outer surface of the helmets are assessed firstly by a shear impact on the projections using a shear edge against which the projections shall shear away, be detached, or permit the shear edge to slide past the projections. The friction is assessed by the displacement of a carriage abrading the outer surface of the helmet. The shear impact and abrading carriage displacement are generated by a drop weight device. For Public Comment
7.4.2.1.2. Positioning of the helmets
7.4.2.1.2.1. The helmet is placed on a headform of appropriate size in accordance with the requirements of annex 5. The helmet is tipped towards the rear so that the front edge of the helmet in the median plane is displaced by 25 mm; if the helmet includes an adjustable chin strap, the strap shall be tightened as much as possible. The headform shall be so positioned that the chosen location on the helmet can be positioned in contact with the upper surface of the horizontal carriage.
7.4.2.1.2.2. The helmet shall be tested in any condition in which it may be placed on the market, that is both with and without accessories if they are supplied as original equipment. Helmets placed on the market with a visor shall be tested with the visor in the closed position.
7.4.2.1.3. Test
7.4.2.1.3.1. Test of projection The headform is adjusted in order to have the chosen projection on the carriage so that the shear edge is positioned 50 mm from the projection and makes lateral contact with the projection after the drop weight is released from its upper position. E/ECE/324 Rev.1/Add.21/Rev.4 E/ECE/TRANS/505 Regulation No. 22 page 33
Description of test. This test is highly operator-dependent; therefore, the Model 72 must be operated in accordance to OPEX’s supplied Model 72 Operator’s Manual. The Acceptance Test will run exactly one (1) hour using the Purchasing Entity’s own mail, at which time the Acceptance Test will terminate. During the Acceptance Test, the following functions can be observed and/or performed on the Model 72 System:
Description of test. 7.4.2.1.1. Principle The rotation-inducing forces caused by projections on the helmets and friction against the outer surface of the helmets are assessed firstly by a shear impact on the projections using a shear edge against which the projections shall shear away, be detached, or permit the shear edge to slide past the projections. The friction is assessed by the displacement of a carriage abrading the outer surface of the helmet. The shear impact and abrading carriage displacement are generated by a drop weight device.
7.4.2.1.2. Positioning of the helmets
7.4.2.1.2.1. The helmet is placed on a headform of appropriate size in accordance with the requirements of annex 5. The helmet is tipped towards the rear so that the front edge of the helmet in the median plane is displaced by 25 mm; if the helmet includes an adjustable chin strap, the strap shall be tightened as much as possible. The headform shall be so positioned that the chosen location on the helmet can be positioned in contact with the upper surface of the horizontal carriage.
7.4.2.1.2.2. The helmet shall be tested in any condition in which it may be placed on the market, that is both with and without accessories if they are supplied as original equipment. Helmets placed on the market with a visor shall be tested with the visor in the closed position. E/ECE/324 Rev.1/Add.21/Rev.3/Amend.3 Regulation No. 22 page 16 7.4.2.1.3. Test
7.4.2.1.3.1. Test of projection The headform is adjusted in order to have the chosen projection on the carriage so that the shear edge is positioned 50 mm from the projection and makes lateral contact with the projection after the drop weight is released from its upper position.
7.4.2.1.3.2. Test of outer surface
Description of test. 2.1. The testing of OBD systems consists of the following phases:
Description of test. For Public Comment
7.3.1.1. Principle Impact absorption capacity is determined by recording against time the acceleration imparted to a headform fitted with the helmet, when dropped in guided free fall at a specific impact velocity upon a fixed steel anvil.
7.3.1.2. Marking of points and areas of impact Before conditioning, the points and areas of impact are marked as indicated in paragraph 7.3.4.2. and annex 4 (fig. 3) and the helmet is positioned in accordance to annex 5.
7.3.1.3. Positioning of the helmet After conditioning:
7.3.1.3.1. The helmet shall be positioned in accordance with the requirements of annex 5 on a headform of appropriate size selected from among those listed in paragraph 7.3.3.2. 5/ When testing impact points B, X, P and R the helmet is tipped towards the rear so that the front edge of the helmet in the median plane is displaced by 25 mm; the retention system is then adjusted E/ECE/324 Rev.1/Add.21/Rev.4 E/ECE/TRANS/505 Regulation No. 22 page 24 under the chin of the headform; if the system includes an adjustable chin strap, the strap is tightened as for normal use.
7.3.1.3.1.1. When testing impact point S on a helmet with a protective lower face cover, the helmeted headform is tipped forwards so that the central vertical axis of the headform is inclined at an angle of 65 •• 3° to the vertical with the vertical longitudinal plane of symmetry of the helmeted headform in the vertical position. If the impact point would be within 15 mm of the rim, the helmeted headform shall be re-positioned so that the impact point is not less than 15 mm from the rim.
7.3.1.3.2. The test headform shall be so positioned that the designated point on the helmet is vertically above the centre of the anvil. The plane tangential to the point of impact shall be horizontal. This prescription does not apply for the S impact point.
7.3.1.3.3. Helmets placed on the market with a visor shall be tested with the visor in the closed position.
7.3.1.4. Test For Public Comment The test shall be completed not more than five minutes after the helmet is taken from the conditioning chamber. Tests at point S shall be carried out after tests at points B, X, P and R. The drop height shall be equal to:
Description of test. The evaporative emissions test (see Figure A7/1) is designed to determine hydrocarbon evaporative emissions as a consequence of diurnal temperatures fluctuation, hot soaks during parking, and urban driving. The test consists of these phases:
2.1. Test preparation including an urban (Part One) and extra-urban (Part Two) driving cycle,
2.2. Hot soak loss determination,
