This report is aimed at defining analytically and demonstrating experimentally the potential of the 'lean-burn concept'. Fuel consumption and emissions data are obtained on the engine dynamometer for the baseline engine, and two lean-burn configurations of the same engine and data comparisons are made. Individual cylinder equivalence ratios are measured to evaluate the cylinder-to-cylinder distribution. Pressure-time traces from individual cylinders are used to get information about ignition delay, combustion duration and cycle-to-cycle pressure variations. Fuel consumption and emissions data for one lean-burn configuration are obtained over the Federal Driving Cycle using a chassis dynamometer and the results are compared with the stock baseline results. Using experimental results and information from the existing literature, the potential of the 'lean-burn concept' is assessed using the Blumberg-Kummer cycle analysis program. The report consists of three volumes. Volume I, the Executive Summary, presents a summary of the experimental equipment and procedure, together with the experimental results and conclusions.
Lean Mixture Engines Testing and Evaluation Program. Volume I: Executive Summary
1975
30 pages
Report
No indication
English
Combustion & Ignition , Reciprocation & Rotating Combustion Engines , Air Pollution & Control , Exhaust emissions , Fuel consumption , Automobile engines , Performance evaluation , Air pollution , Laboratory equipment , Nitrogen oxides , Hydrocarbons , Gas analysis , Design criteria , Thermal efficiency , Dynamometers , Combustion chamber gases , Combustion , Lean fuel mixtures , Automobile exhaust , Air to fuel ratios
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