METHOD AND MODULE FOR CONTROL OVER VEHICLE SPEED Russian patent published in 2014 - IPC B60K31/00 

FIELD: transport.

SUBSTANCE: in compliance with proposed process, vehicle desirable speed vset is accepted. Cartographic and location data are used to define the horizon for planned route composed of segments with adequate characteristics. At every simulation step (s), each including N steps executed at preset rate f, the steps that follow are executed. First forecast of vehicle speed vpred_cc over horizon is made with the help of traditional speed maintenance system when reference speed is vset. Note here that forecast depends on characteristics of said segment. Forecast vehicle speed vpred is compared with vmin and vmax that define the vehicle planned speed range. Second forecast of vehicle speed vpred_Tnew over the horizon when engine torque T depends on the results of said comparison at the last previous simulation step (s-1). Reference magnitude is defined to derive, proceeding from one of said comparisons in said cycle (s) simulation and forecast speed vpred_Tnew, define how vehicle speed can be affected. Said reference value is sent to vehicle control system to adjust said vehicle in compliance with said reference value. Invention covers also the vehicle speed control module.

EFFECT: fuel savings, automatic speed maintenance.

2 cl, 7 dwg