Sampling valve

Abstract: New results were obtained on pollutants evolution during the combustion of four oxygenated fuels, whichwere compared with n-tetradecane and n-octane combustion. Three different techniques were adopted on a single cylinder direct injection diesel engine, equipped with optical accesses: two-colour pyrometry for the measurement of in-cylinder soot loading, high speed cinematography for the visualization and analysis of spray and combustion, fast sampling valve for the measurements of in-cylinder combustion products. In particular, the sampling line downstream of the fast sampling valve was adapted for the in-cylinder aldheydes measurements. Heat release analysis and fast sampling valve have shown that CO2 formation rate and heat release rate during the diffusion phase of combustion increase with the fuel oxygen content. Acetylene concentrations are influenced by fuel cetane number and oxygen content but, at the same fuel cetane number, they decrease when oxygen content increases. In-cylinder aldheyd...

Abstract: A liquid diluting and transfer valve (10) with disc like valve elements (12, 14, 16) with faces (12', 14', 14'', 16') which are frictionally engaged. Each disc like valve element (12, 14, 16) further includes passageways (30, 64, 66, 70, 73, 32) which can be used to pass both sample liquid and rinse liquid. A continuous groove (100) is formed in one of the respective faces (12', 16') for effectively isolating the passageway openings (30, 64, 66, 70, 73, 32) to the face (12', 16'). The continuous groove (100) is capable of blocking passage of material leaking along the face (12', 16') to the periphery of that engaged face (12', 16').

Abstract: A valve for connecting a fluid sampling device to a fluid source is provided that includes a body adapted to be secured to the fluid source and a valve member moveably disposed within the body. The body includes a coupling interface configured to sealingly mate with the sampling device. The valve member is actuated by the sampling device during attachment of the sampling device to the valve body. The sampling device actuated valve member is moveable between a first position in which a flow path between the fluid source and the sampling device is closed and a second position in which the flow path between the fluid source and the sampling device is open. When the fluid flow path is open, the sampling device can withdraw a fluid sample for inspection and return the fluid sample to the fluid source without exposing the fluid to the surrounding environment.

Abstract: 1. APPARATUS FOR THE SIMULTANEOUS ANALYSIS OF FLUID FROM A MULTIPLICITY OF FLUID SUPPLY CELLS COMPRISING: (A) MEAND TO REMOVE A CONSTANT FLOW OF FLUID FROM SAID SUPPLYING CELLS AND DELIVER A CONSTANT SUPPLY OF FLUID TO A SAMPLING VALVE MAENS; (B) SAMPLING VALVE MEANS ADAPTED FOR AUTOMATIC SELECTIVE SAMPLING OF THE DELIVERED FLUID SAMPLES, SAID VALVE MEANS COMPRISING A HOLLOW TRUNCATED CONICAL BARREL AS AN OUTER MEMBER AND A TRUNCATED CONICAL PLUG AS AN INNER MEMBER CONTIGUOUSLY RECEIVED IN SAID OUTER MEMBER, MEANS TO ROTATE ONE OF SAID MEMBERS RELATIVE TO THE OTHER ABOUT A COMMON AXIS, AT LEAST TWO CONDUITS FOR THE TRANSMISSION OF FLUID TO SAID VALVE CONNECTED TO SAID BARREL, ALL SAID CONDUITS CONNECTED AT POINTS IN A SINGLE PLANE PERPENDICULAR TO SAID COMMON AXIS, THE PLUG INCLUDING A PERIPHERAL CHANNEL, THE CONTACT BETWEEN SAID INNER AND OUTER MEMBERS FORMING A CLOSURE FOR SAID CHANNEL, A DISCHARGE PASSAGE IN FLUID COMMUNICATION WITH ONE OF SAID MEMBERS AND SAID CHANNEL, SAID CHANNEL COMPRISES A FIRET SECTION GENERALLY LYING IN THE SAME PLANE AS SAID CONDUITS AND BEING OF A LENGTH LESS THAN THE DISTANCE BETWEEN TWO CONSECUTIVE CONDUITS, A SECOND SECTION IN FLUID COMMUNICATION WITH, AND AT AN ANGLE TO, SAID FIRST SECTION, A THIRD SECTION IN FLUID COMMUNICATION WITH SAID CHANNEL ADAPTED TO REGISTER WITH, AND PASSAGE, SAID CHANNEL ADAPTED TO REGISTER WITH, AND PASS FLUID FROM, SAID CONDUITS TO SAID DISCHARGE PASSAGE; (C) ASSAY MEANS TO MEASURE THE SELECTED FLUID SAMPLES IN FLUID COMMUNICATION WITH SAID SAMPLING VALVE MEANS; AND (D) TIMING MEANS INTERCONNECTING SAID SAMPLING VALVE MEANS AND SAID ASSAY MEANS TO ACTIVATE AND CONTROL SAID ASSAY MEANS