BS ISO 21755-1:2019
$167.15
Motorcycles. Measurement method for evaporative emissions – SHED test procedure
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 34 |
This document specifies a basic measurement method by using the SHED (Sealed Housing for Evaporative Determination) test procedure for evaporative emissions from motorcycles. It is applicable to motorcycles equipped with a spark ignition engine (four-stroke engine, two-stroke engine or rotary piston engine).
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | National foreword |
| 6 | Foreword |
| 7 | Introduction |
| 9 | 1 Scope 2 Normative references 3 Terms and definitions |
| 10 | 4 Evaporative emissions, SHED test 4.1 Description of SHED test |
| 11 | 4.2 Test motorcycles and test fuel 4.2.1 Test motorcycles 4.2.2 Test fuel 4.3 Test equipment 4.3.1 Chassis dynamometer |
| 12 | 4.3.2 Evaporative emission measurement enclosure (SHED) 4.3.3 Analytical systems 4.3.4 Fuel tank heating |
| 13 | 4.3.5 Temperature recording 4.3.6 Fans 4.3.7 Gases |
| 14 | 4.3.8 Additional equipment 4.4 Test procedure 4.4.1 Test preparation 4.4.2 Conditioning phase 4.4.3 Test phases |
| 16 | 4.5 Calculation of results |
| 18 | 5 Calibration of equipment for evaporative emission testing 5.1 Calibration frequency and methods 5.2 Calibration of the enclosure 5.2.1 Initial determination of enclosure internal volume 5.2.2 Determination of enclosure background emissions 5.2.3 Calibration and hydrocarbon retention test of the enclosure |
| 19 | 5.2.4 Calculations 5.3 Checking of hydrocarbon analyser 5.3.1 Detector response optimization 5.3.2 Calibration of the hydrocarbon analyser 5.3.3 Oxygen interference check and recommended limits |
| 20 | 5.4 Calibration of the hydrocarbon analyser 6 Presentation of results 6.1 The evaporative emission 6.2 Test report |
| 21 | Annex A (informative) Running loss test procedure |
| 26 | Annex B (normative) Running-in test procedure for evaporative emission control devices |
| 28 | Annex C (normative) Presentation of results for evaporative emissions |
| 32 | Bibliography |
