Abstract: A vehicular control system includes a first electronic control unit (ECU) and a second ECU disposed at a vehicle. The first and second ECUs are in digital communication with one another via a communication link. The first ECU transmits a first frame to the second ECU, which, responsive to receiving the first frame from the first ECU, transmits a second frame to the first ECU. The first ECU, responsive to receiving the second frame from the second ECU, determines a propagation delay based on an amount of time between when the first ECU transmitted the first frame to the second ECU and when the first ECU received the second frame from the second ECU. The first ECU, responsive to determining the propagation delay, transmits a time synchronization frame to the second ECU that is based at least in part on the determined propagation delay.

Abstract: A vehicular power system includes a battery disposed at a vehicle, an electrical motor disposed at the vehicle that controls propulsion of the equipped vehicle when powered, a power system controller, and a transformer electrically connected to the battery. The transformer includes a plurality of taps, each tap of the plurality of taps providing a different output voltage. The power system controller, responsive to a vehicle speed request, determines one of the plurality of taps. The power system controller electrically connects the determined one of the plurality of taps to the electrical motor, and electrical power flows from the battery through the determined one of the plurality of taps to the electrical motor. The electrical motor, based on the electrical power from the determined one of the plurality of taps, adjusts speed of propulsion of the equipped vehicle toward the requested vehicle speed.

Abstract: A vehicular control system includes a first electronic control unit (ECU) and a second ECU disposed at a vehicle. The first and second ECUs are in digital communication with one another via a communication link. The first ECU transmits a first frame to the second ECU, which, responsive to receiving the first frame from the first ECU, transmits a second frame to the first ECU. The first ECU, responsive to receiving the second frame from the second ECU, determines a propagation delay based on an amount of time between when the first ECU transmitted the first frame to the second ECU and when the first ECU received the second frame from the second ECU. The first ECU, responsive to determining the propagation delay, transmits a time synchronization frame to the second ECU that is based at least in part on the determined propagation delay.