Common use of Conditioning by pulsation Clause in Contracts

Conditioning by pulsation. 2.1. The exhaust system or components thereof shall be fitted to the motorcycle or to the engine. In the former case, the motorcycle shall be mounted on a roller dynamometer. In the second case, the engine shall be mounted on a test bench. The test apparatus, a detailed diagram of which is shown in Figure 1, is fitted at the outlet of the exhaust system. Any other apparatus providing equivalent results is acceptable. 2.2. The test equipment shall be adjusted so that the flow of exhaust gases is alternatively interrupted and restored 2,500 times by a rapid-action valve. 2.3. The valve 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 and 0.40 bar. Should such a figure be unattainable because of the engine characteristics, the valve shall open when the gas back-pressure reaches a level equivalent to 90 per cent of the maximum that can be measured before the engine stops. It shall close when this pressure does not differ by more than 10 per cent from its stabilized value with the valve open. 2.4. The time-delay switch shall be set for the duration of exhaust gases calculated on the basis of the requirements of paragraph 4.2.3 above. 2.5. Engine speed shall be 75 per cent of the speed (S) at which the engine develops maximum power. 2.6. The power indicated by the dynamometer shall be 50 per cent of the full- throttle power measured at 75 per cent of engine speed (S). 2.7. Any drainage holes shall be closed off during the test. 2.8. The entire test shall be completed within 48 hours. If necessary, a cooling period shall be allowed after each hour.

Conditioning by pulsation. 2.1. The exhaust system or components thereof shall be fitted to the motorcycle or to the engine. In the former case, the motorcycle shall be mounted on a roller dynamometer. In the second case, the engine shall be mounted on a test bench. The test apparatus, a detailed diagram of which is shown in Figure 1, is fitted at the outlet of the exhaust system. Any other apparatus providing equivalent results is acceptable. 2.2. The test equipment shall be adjusted so that the flow of exhaust gases is alternatively interrupted and restored 2,500 times by a rapid-action valve. 2.3. The valve 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 and 0.40 bar. Should such a figure be unattainable because of the engine characteristics, the valve shall open when the gas back-pressure reaches a level equivalent to 90 per cent of the maximum that can be measured before the engine stops. It shall close when this pressure does not differ by more than 10 per cent from its stabilized value with the valve open. 2.4. The time-delay switch shall be set for the duration of exhaust gases calculated on the basis of the requirements of paragraph 4.2.3 above. 2.5. Engine speed shall be 75 per cent of the speed (S) at which the engine develops maximum power. 2.6. The power indicated by the dynamometer shall be 50 per cent of the full- full-throttle power measured at 75 per cent of engine speed (S). 2.7. Any drainage holes shall be closed off during the test. 2.8. The entire test shall be completed within 48 hours. If necessary, a cooling period shall be allowed after each hour.