| 摘要 |
FIELD: manufacture of engines; tests of internal combustion engines. ^ SUBSTANCE: proposed method includes measurement of radius "rw" of prime mover and total weight G. Magnitude of torque Men is changed by loading brake. Then, magnitude of torque Men and number of revolutions "n" set by means of regulator for each magnitude of torque Men are measured. Fuel consumption for each magnitude of torque is measured and control characteristic is plotted. Thrust force is determined. Theoretical speed of tractive transport facility Vtr is determined by the following expression Vtr=0,377.r.n/1, slippage coefficient delta of tractive transport facility is determined, actual speed V of tractive transport facility is determined by the following expression V=Vtr-(1-delta),magnitudes thus obtained are converted into electrical signals which are shaped and directed to computer and dependence of hook force Ph versus engine torque Mg is plotted, dependences of theoretical speeds Vtr of tractive transport facility for various transmissions are plotted, dependence of slippage coefficient delta versus force thrust Ph on transport facility hook and dependence of actual speed V of transport facility versus hook thrust force Ph are plotted and signal for determination of maximum thrust force Ph.max. on transport facility hook and respective speed Vmax1 is formed; said force is created by prime movers of transport facility at total preset weight with slippage coefficient taken into account. After determination of maximum thrust force Ph.max. on tractive facility hook for each transmission of transport facility signals are shaped and directed to computer for determination of respective magnitude of torque Men for maximum thrust force Ph.max. on transport facility hook from dependence of hook thrust force Ph versus torque Men, after which signal is shaped and directed to computer for determination of hourly fuel consumption Gf.max. versus maximum thrust force on transport facility hook by magnitude of torque Men1 from control characteristic of fuel consumption Gf. Fuel endurance q100.max. of transport facility by maximum fuel consumption per 100 km of run for maximum thrust force Ph.max. on hook and preset transmission is determined by hourly fuel consumption Gf.max. from the expression q100.max=100.Gf.max/gamma.Vmax 1 , where gamma is fuel specific weight. ^ EFFECT: enhanced efficiency of use of internal combustion engine due to enhanced accuracy of measurement of fuel consumption. ^ 2 cl, 1 dwg
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