Common use of Conditioning by pulsation Clause in Contracts

Conditioning by pulsation. 5.1.4.2.1. The exhaust system or components thereof must be fitted to the moped or to the engine. In the former case, the moped must be mounted on a roller dynamometer. In the second case, the engine must be mounted on a test bench. The test apparatus, a detailed diagram of which is shown in figure 3, shall be fitted at the outlet of the exhaust system. Any other apparatus providing equivalent results shall be acceptable. 5.1.4.2.2. The test equipment must be adjusted so that the flow of exhaust gases is alternately interrupted and restored 2,500 times by a rapid-action valve. 5.1.4.2.3. The valve must open when the exhaust gas back-pressure, measured at least 100 mm downstream of the intake flange, reaches a value of between 0.35 and 0.40 bar. Should such a figure be unattainable because of the engine characteristics, the valve must open when the gas back-pressure reaches a level equivalent to 90% of the maximum that can be measured before the engine stops. It must close when this pressure does not differ by more than 10% from its stabilized value with the valve open. 5.1.4.2.4. The time-delay switch must be set for the duration of exhaust gases calculated on the basis of the requirements of paragraph 5.1.4.2.3. above. 5.1.4.2.5. Engine speed must be 75% of the speed (S) at which the engine develops maximum power. 5.1.4.2.6. The power indicated by the dynamometer must be 50% of the full-throttle power measured at 75% of engine speed (S). 5.1.4.2.7. Any drainage holes must be closed off during the test. E/ECE/324 Rev.1/Add.62/Amend.1 Regulation No. 63 page 15

Conditioning by pulsation. 5.1.4.2.1. The exhaust system or components thereof must shall be fitted to the moped or to the engine. In the former case, the moped must shall be mounted on a roller dynamometer. In the second case, the engine must shall be mounted on a test bench. The test apparatus, a detailed diagram of which is shown in figure Figure 3, shall be fitted at the outlet of the exhaust system. Any other apparatus providing equivalent results shall be acceptable. 5.1.4.2.2. The test equipment must shall be adjusted so that the flow of exhaust gases is alternately interrupted and restored 2,500 times by a rapid-action valve. 5.1.4.2.3. The valve must shall open when the exhaust gas back-pressure, measured at least 100 mm downstream of the intake flange, reaches a value of between 0.35 35 and 0.40 bar40 kPa. Should such a figure be unattainable because of the engine characteristics, the valve must shall open when the gas back-pressure reaches a level equivalent to 90% 90 per cent of the maximum that can be measured before the engine stops. It must shall close when this pressure does not differ by more than 10% 10 per cent from its stabilized value with the valve open. 5.1.4.2.4. The time-delay switch must shall be set for the duration of exhaust gases calculated on the basis of the requirements of paragraph 5.1.4.2.3. above. 5.1.4.2.5. Engine speed must shall be 75% 75 per cent of the speed (S) at which the engine develops maximum power. 5.1.4.2.6. The power indicated by the dynamometer must shall be 50% 50 per cent of the full-throttle power measured at 75% 75 per cent of engine speed (S). 5.1.4.2.7. Any drainage holes must shall be closed off during the test. 5.1.4.2.8. E/ECE/324 Rev.1/Add.62/Amend.1 Regulation NoThe entire test shall be completed within 48 hours. 63 page 15If necessary, a cooling period shall be allowed after each hour.