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- ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel18. Precision and Bias18.1 Bracketing - Equilibrium Fuel Level Procedure A and C.R. Procedure C:18.1.1 90.0 to 100.0 Research O.N. Range - The precision of this test method for Research O.N. values between 90.0 and 100.0 based ...
- ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel16. Calculation of O.N. - Bracketing Procedures16.1 Calculate the average knockmeter readings for the sample fuel and each of the PRF blends.16.2 Calculate the O.N. by interpolation of these average knockmeter readings proportioned ...
- ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine FuelPROCEDURE C15. Compression Ratio15.1 Cylinder Height Measurement - This procedure shall only be used if the CFR engine is equipped with a digital counter for measurement of cylinder height in order to maximize the resolution ...
- ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine FuelPROCEDURE B14. Bracketing - Dynamic Fuel Level14.1 Applicable O.N. Rating Range - This procedure shall apply for ratings within the range from 80 to 100 O.N.14.2 Check that all engine operating conditions are in compliance ...
- ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine FuelPROCEDURE A13. Bracketing - Equilibrium Fuel Level13.1 Check that all engine operating conditions are in compliance and equilibrated with the engine running on a typical fuel at approximately standard K.I.13.2 Perform engine ...
- ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel12. Test Variable Characteristics12.1 Cylinder Height Relationship to O.N. - Cylinder height, a measure of C.R., has a significant effect on fuels and their knocking characteristic. Every fuel has a critical compression ratio ...
- ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel11. Engine Standardization11.1 Unit Preparation - Operate the properly commissioned knock test unit at temperature equilibrium and in compliance with the basic engine and instrument settings and standard operating conditions ...
- ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel10. Basic Engine and Instrument Settings and Standard Operating Conditions10.1 Installation of Engine Equipment andInstrumentation - Installation of the engine and instrumentation requires placement of the engine on a suitable ...
- ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel7. Apparatus7.1 Engine Equipment - This test method uses a single cylinder, CFR engine that consists of standard components as follows: crankcase, a cylinder/clamping sleeve assembly to provide continuously variable compression ...
- ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel ASTM D2699 test method for Research Octane Number of Spark-Ignition Engine Fuel4. Summary of Test Method4.1 The Research O.N. of a spark-ignition engine fuel is determined using a standard test engine and operating conditions to compare its knock characteristic with those of PRF blends of known O.N. ...