ISO 8178-6:2018 pdf free.Reciprocating internal combustion engines – Exhaust emission
measurement一 Part 6: Report of measuring results and test.
5 Emissions test report
5.1 Introduction
The recommended test report consists of 13 data sheets (see Annex A) that contain all the information pertinent to a test run in a very compact way. The test report is a single document that can be filed easily for later review of the test results by authorities, customers and engine manufacturers. It incorporates the final test results and the information needed to trace the final results to the values originally measured, as well as the information on the test engine, the test cell equipment and the test fuel. The report format may be applied to all test cycles and fuels. It should be noted that the information that is being suggested for filling in the tables in the document are based upon computations that exist in the appropriate Iso 8178 procedures. The description provided in SA to and 9 is only there to assist in identifying the computations that can be required. It is not necessary to complete all parts of this test report. The parts to be completed shall be agreed between the parties concerned.
5.2 General information
Table A.1 includes the information essential for engine approval, such as engine identification, engine application, test cycle and test identification. The emission test results may be listed for different test cycles, if applicable. The gaseous and particulate emissions shall be expressed in grams per kilowatt hour whenever possible. Other units shall be indicated if used according to the provisions laid down in the Scope of this document. The smoke test results shall be listed for the smoke cycle applicable to the indicated application. The smoke values shall be expressed per metre whenever possible.
5.3 Engine information
Table A.2 contains the basic features of the engine under test. If more information is requested by other parties, this can be provided. Table A.3 contains other information on the engine under test pertinent to the identification of the engine family or group. These features are derived from ISO 8178-7 for engine family and ISO 8178-8 for engine group. If the engine family or group concept does not apply for the engine under test, Table A.3 does not need to be submitted.
5.4 Ambient and engine test data
For steady-state discrete mode test, Table A.4 includes in the upper part the relevant ambient data, in the lower part the relevant engine data required to be recorded in ISO 8178-4. In most cases, mechanical shaft power is used for the calculation of the final results. If other kinds of power are used, e.g. electrical, thermal or total power, this shall be indicated. Fuel flow, air flow and exhaust flow may be expressed as volume or mass flow rates, and the unit used shall be filled in. The measurement values shall be recorded for each mode individually, and the cycle value shall be calculated for the power and recorded. For further details, refer to ISO 8 178-4.
For steady-state RMC test and transient test, the actual cycle work in Table A.5 shall be calculated by integrating over the cycle in order to calculate the brake specific emissions. For further details, refer to ISO 8 178-4.
5.5 Gaseous emissions data
5.5.1 Steady-state discrete mode test
Table A.6 contains in the upper part the originally measured (or calculated for SO2) concentrations of the gaseous emissions either in the raw or dilute exhaust gas for each individual mode.
For engines with infrequent exhaust regeneration, the recorded value shall be the one which has been corrected with the appropriate upward or downward regeneration adjustment factor, kr. For further details, refer to ISO 8 178-4.
5.5.2 Steady-state RMC test and transient test
Table A.7 includes in the upper part the measured cycle concentrations of the gaseous emissions uncorrected and corrected for background either in the raw or dilute exhaust gas. For dilute system with constant mass flow, the average background corrected concentration over the cycle shall be reported. For dilute systems with flow compensation, the background correction shall be applied directly to the instantaneous concentration values. For transient composite cycle, the total mass emission shall be a weighted average from cold start test and hot start test. In case of an infrequent exhaust regeneration, the specific emissions shall be corrected with the appropriate regeneration adjustment factor, kr, either multiplicative or additive. For further details, refer to ISO 8178-4.
ISO 8178-6 pdf download.