Vehicular route planning system that factors in range variations and driver preference

A vehicular navigation system, the vehicular navigation system comprising:

• an electronic control unit (ECU) comprising electronic circuitry and associated software;
• wherein the ECU is operable to determine routes for a vehicle equipped with the vehicular navigation system based at least in part on map data;
• wherein the ECU, to route the vehicle from a starting location to an ending location, determines one or more candidate routes from the starting location to the ending location;
• wherein the ECU, based on historical temperature data of the vehicle, determines vehicle temperature data representing a selected interior selected interior cabin temperature of the vehicle;
• wherein the ECU, for each determined candidate route, and based at least in part on environmental temperature data for at least one location along the respective determined candidate route and a temperature difference between the environmental temperature data and the vehicle temperature data, determines a respective energy efficiency for travel of the vehicle along the respective determined candidate route;
• and
• wherein the ECU, based on the determined respective energy efficiency for travel of the vehicle along each determined candidate route, selects one of the determined candidate routes for the vehicle to travel along from the starting location to the ending location.

A vehicular navigation system, the vehicular navigation system comprising:

• an electronic control unit (ECU) comprising electronic circuitry and associated software;
• wherein the ECU is operable to determine routes for a vehicle equipped with the vehicular navigation system based at least in part on map data;
• wherein the ECU, to route the vehicle from a starting location to an ending location, determines one or more candidate routes from the starting location to the ending location;
• wherein the ECU, for each determined candidate route, determines a respective powertrain loss of the vehicle based on predicted velocities along the respective determined route;
• wherein the ECU, for each determined candidate route, and based at least in part on environmental temperature data for at least one location along the respective determined candidate route and the respective powertrain loss of the respective determined candidate route, determines a respective energy efficiency for travel of the vehicle along the respective determined candidate route;
• and
• wherein the ECU, based on the determined respective energy efficiency for travel of the vehicle along each determined candidate route, selects one of the determined candidate routes for the vehicle to travel along from the starting location to the ending location.