Transcription of UNIT 7 IC ENGINE TESTING IC Engine Testing
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79 IC ENGINE TESTING UNIT 7 IC ENGINE TESTING Structure Introduction Objectives Performance Measurements Basic Parameters measurement of Speed Fuel Consumption measurement measurement of Air Consumption measurement of Exhaust Smoke measurement of Exhaust Emission measurement of Brake Power measurement of Friction Horse Power Blowby Loss Performance of SI Engines Performance of CI Engines Summary Key Words Answers to SAQs INTRODUCTION At a design and development stage an engineer would design an ENGINE with certain aims in his mind. The aims may include the variables like indicated power, brake power, brake specific fuel consumption, exhaust emissions, cooling of ENGINE , maintenance free operation etc.
7.3.3 Measurement of Air Consumption 7.3.4 Measurement of Exhaust Smoke 7.4 Measurement of Exhaust Emission ... tests starting from simple fuel and air-flow measurements to taking of complicated ... temperature and the completeness of combustion. Relative fuel-air ratio is defined as the ratio of the actual fuel-air ratio to that of
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