Common use of Tests and requirements Clause in Contracts

Tests and requirements. An engine representative of the desired extension of the application range shall be tested in accordance with the provisions set out in paragraph 5.2.2. or 10.1.1. at the choice of the dual-fuel engine retrofit system manufacturer. Engine tests in accordance with paragraph 5.2.2. are always required for the extension of an application range with an engine family equipped with EGR. The tests in accordance with paragraph 10.1.1. shall be carried out on a representative engine equipped with a member of the dual-fuel engine retrofit system family. The same tests shall be performed in diesel mode and in dual-fuel mode in such a way that the operating points and conditions are as similar as possible. The NOX, Non-Methane Hydrocarbons (NMHC), CO and PM emission test results in dual-fuel mode shall be lower than or equal to the results in diesel mode. Alternatively, at the request of the engine retrofit system manufacturer, the following provisions apply: (a) As for Non-Methane Hydrocarbons (NMHC) and CO emissions only, the CO2 specific emission results of the test in accordance with paragraph 10. 1.1.1. in dual-fuel mode shall not exceed the applicable UN Regulation No. 49 original emission limits transposed into CO2 specific emission limits with the following equation: CO2 specific emission limit = 1.6 × 1.5 × brake specific emission limit Where: CO2 specific emission limit is the equivalent limit expressed in [g/kgCO2]