METHOD OF DETERMINATION OF TRANSPORT FACILITY FUEL ENDURANCE BY HOURLY CONSUMPTION OF FUEL OF INTERNAL COMBUSTION ENGINE Russian patent published in 2006 - IPC F02M65/00 G01M15/00 

FIELD: manufacture of engines; testing internal combustion engines.

SUBSTANCE: proposed method includes measurement of radius "r_w" of drive wheel or drive sprocket of transport facility prime mover and total weight G of transport facility. Engine torque M_en is changed by means of loading brake. Magnitude of engine torque M_en and number of revolutions "n" of engine set by means of regulator for each magnitude of torque M_en are measured; fuel consumption is measured for each magnitude of engine torque M_en and control characteristic of dependence of fuel consumption G_tr versus engine torque M_en is plotted. Tangential thrust force P_tan of transport facility prime mover at radius "r_w" is determined from the following expression: P_tan=M_en·η_tr·i/r_w, where η_tr is transmission coefficient and i is transmission ratio. Speed of transport facility is determined by the following expression V=0.377·r_w·n/i; maximum tangential force P_tan.max created by transport facility prime movers is determined from the following expression P_tan.max=φ·λ·G, where φ_max is coefficient of maximum adhesion of prime movers with ground, λ is ratio of preset adhesion weight G_ad and total weight G of transport facility. Data thus obtained are converted into electrical signals which are shaped and directed to computer and on their base dependence of tangential force P_tan versus magnitude of engine torque M_en and dependence of speed V of transport facility for various transmissions versus magnitude of tangential thrust force P_tan are plotted. After determination of maximum tangential thrust force P_tan.max. for each transmission of transport facility, signals are shaped by dependence of speed V versus tangential thrust force P_tan and are directed to computer for determination of respective speed V_max1 for maximum tangential thrust force P_tan.max and for determination of dependence of tangential force P_tan versus torque M_en corresponding to torque M_en1 for maximum tangential force P_tan.max, after which signals are shaped by magnitude of torque M_en1 and are directed to computer for determination of dependence of fuel consumption G_f versus engine torque M_en, magnitude of hourly fuel consumption G_fmax corresponding to maximum tangential thrust force P_{tan max}. Fuel endurance q_{100 max} of transport facility by maximum consumption of fuel per 100 km of run for maximum tangential thrust force P_tanmax and preset transmission of transport facility are determined by hourly fuel consumption G_{f max} from the following expression: q_{100 max}=100G_{f max}/V_max1, where γ is specific weight of fuel.

EFFECT: enhanced efficiency of use of internal combustion engine due to enhanced accuracy of measurements.

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