CONTROL OVER VEHICLE FUEL EFFICIENCY ON GROUND ROADS Russian patent published in 2015 - IPC G01M17/00 

FIELD: transport.

SUBSTANCE: factor of total resistance to motion Ψ_j is defined by magnitudes of engine fuel consumption $${\overline{Q}}_j$$ and realized mean speed $${\overline{V}}_j.$$ Corrected are lengths of measured section S_l via comparison of standard values of loading level W_jl with actual realized value $${\overline{W}}_j$$ by formula $$S_{jk}=\frac{W_{jl}}{{\overline{\Psi }}_j}.$$ Corrected is the mean fuel consumption at preset speed reduced to standard value Ψ_jl by formula $${\overline{Q}}_{jl}={\overline{Q}}_j\cdot S_{jk}/S_{jl}.$$ Obtained values $${\overline{Q}}_{jl}$$ corresponding to $${\overline{V}}_j$$ of every run and control points with application of linear interpolation are used to plot fuel characteristic "ГУн", "РГн" and "Мн" for arbitrarily established motion for every standard earth road. Control fuel consumption is defined by ordinates at speeds: 35 km/h on earth road of satisfactory state, 25 km/h on bumpy earth road and 17.5 km/h at slush.

EFFECT: higher accuracy of fuel characteristics determination.

2 cl, 1 dwg, 1 tbl