Patent ID: 8196687
Filing Date: 2012-06-12
Classification: B60K,B60L,B60W,Y02T

Abstract:
1. An extended-range electric vehicle comprising: drive wheels; an engine having an output shaft; a planetary gear set having first, second, and third nodes, wherein the first node is connected to and driven by the output shaft of the engine when the engine is on; a first electric machine connected to the second node, and configured to operate as a generator when the engine is on; a one-way clutch having an input side connected to the third node; a second electric machine connected to an output side of the one-way clutch; a power transmission shaft connecting the drive wheels to the second electric machine; an auxiliary starter motor adapted for cranking the engine; and a controller having an algorithm adapted for controlling the engine, the first and second electric machines, the one-way clutch, and the starter motor to thereby provide each of a forward electric-only (EV) mode, a reverse EV mode, at least one power-split mode, and at least one series mode, wherein the at least one series mode provides a direct mechanical path between the engine and the drive wheels.