CRUISE CONTROL SYSTEM WITH IMPROVED FUEL ECONOMY

摘要

A cruise control system for a vehicle includes a speed setpoint module that stores a speed setpoint. A speed variance module stores a predetermined speed variance. The predetermined speed variance can be user defined or preset. A shift inhibiting module receives a transmission downshift request, prevents the requested transmission downshift when a vehicle speed is less than a set speed and greater than the set speed minus the predetermined speed variance and allows the requested transmission downshift when the vehicle speed is less than the set speed minus the predetermined speed variance.