Abstract: A charging system for a hybrid vehicle comprises an internal combustion engine, an electric motor generator coupled to the internal combustion engine and operable to be driven as a generator to produce a charging voltage and a battery coupled to the electric motor generator and configured to receive a charge voltage. The charging system further comprises an engine control computer coupled to the internal combustion engine, the electric motor generator and the battery. The engine control computer is configured to determine a threshold CSFC, calculate an instantaneous CSFC, and initiate active charging of the battery if the instantaneous CSFC is less than or equal to the threshold CSFC.

Abstract: A fuel savings informational system is provided for implementation on an alternative fuel vehicle the operation of which may be characterized by a first plurality of fixed parameters and a second plurality of variable parameters. The system compares the fuel consumption of the alternative fuel vehicle to that of a virtual comparison vehicle characterized by a third plurality of fixed parameters, and comprises a plurality of sensors for monitoring the second plurality and a processor coupled thereto. The processor is configured to recall the first and third pluralities, capture data corresponding to the second plurality, and determine the fuel consumption of the alternative fuel vehicle from the second plurality. The processor is further configured to estimate the fuel consumption of the comparison vehicle from the first, second, and third pluralities, and compare the fuel consumption of the alternative fuel vehicle to the estimated fuel consumption of the comparison vehicle.

Abstract: A braking distribution system is provided for system with a front regenerative braking system and a rear regenerative braking system. The system comprises a brake controller coupled to the front regenerative braking system and the rear regenerative braking system, and the brake controller is configured to receive a braking request, a first amount of braking that is available from the front regenerative braking system, and a second amount of braking that is available from the rear regenerative braking system. The controller is also configured to calculate a front base braking based at least in part on the braking request and a front base braking distribution, calculate a rear base braking based at least in part on the braking request and a rear base braking distribution, and determine a front regenerative braking request and a rear regenerative braking request based on the first amount and the second amount.