DEVICE FOR REGULATING AN ENGINE-AND-TRANSMISSION UNIT IN A MOTOR VEHICLE

摘要

PCT No. PCT/EP78/00026 Sec. 371 Date Nov. 17, 1979 Sec. 102(e) Date Nov. 5, 1979 PCT Filed Dec. 7, 1978 PCT Pub. No. WO79/00781 PCT Pub. Date Oct. 18, 1979.The engine is controlled by sensing fuel pedal position, indicative of desire engine power. A characteristic transmission data field is used to select the appropriate gear or gear ratio. The engine is controlled on the basis of characteristic engine data or on the basis of an engine operating curve associated with minimum fuel consumption in dependence of the changes in engine speed due to the changing transmission ratio. In normal driving, the apparatus selects operation along the minimum fuel curve whereas during periods of increased power demand, the apparatus operates in dependence of characteristic engine data. Also proposed is apparatus which takes account of the operational vehicle status and effects the switchover from optimum fuel consumption to optimum power delivery with priority assigned to optimum fuel economy.