Device for the automatic comparison of the octane number of a pruefkraftstoffes with that of a reference force substance

摘要

1,020,530. Mixing proportionately flowing fluids. SHELL INTERNATIONALS RESEARCH MAATSCHAPPIJ N.V. June 30, 1964, No. 27040/64. Heading B1C. [Also in Divisions Fl and G3] In a fuel blending installation the various fuel components such as naphtha, hydrocarbon fuel, platformate, butane and tetraethyl lead are fed through lines 50-54 and blended at 67, the resultant blend flowing through outlet control 68. The flow through the pipes 51-54 is' controlled by proportioning devices 59-62 controlled by signals from a main flowmeter 69 compared with signals from the individual line flowmeters 55-58. The flow in the butane line 53 is also controlled by a vapour pressure measuring device 72 so as to produce a desired vapour pressure for the final blend and the flow of the tetraethyl lead through pipe 54 is additionally controlled by the output signal of an octane measuring device 75 (see Division F1). A sample of the final blend is fed to the device 75 as a test fuel for comparison with a reference fuel and the output signal from the device 75, which is a measure of the octane value of the final blend, controls the tetraethyl lead supply valve 66 to produce a desired octane value for the final blend.