GEAR MEASURING FLOW RATE OF FLUID MEDIUM Russian patent published in 2001 - IPC

FIELD: measurement of mass flow rate of air sucked by internal combustion engine. SUBSTANCE: gear 1 has measurement conduit 30 running along from inlet hole 35 to outlet hole 36. Temperature-sensitive element 20, 28 is placed in measurement conduit. First section 32 of duct 31 changing direction of flow borders on outlet hole. Boundary surface 45 of first section deviates flow of medium from measurement conduit into second section 33 of duct 31. Angle α of inclination of boundary surface 45 to direction of flow amounts to 30 to 60 degrees. EFFECT: diminished effect of pulsation of flow on result of measurements with keeping of compactness of gear. 9 cl, 3 dwg