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US 5,495,906 AGranted
Controller of hybrid electric vehicle
AssigneeToyota Jidosha Kabushiki Kaisha
InventorMasayuki Furutani
Life of this patent
Estimating the term…
Abstract
A motor continuously drives rear wheels during medium and low-speed running, while an engine drives front wheels in a high-speed running area. In this case, transfer of an engine-generated driving force to wheels is controlled by a transmission. In a medium- or low-speed running area, the engine is used only for power generation and engine-driven running is not carried out.
Claims7
A controller of a hybrid electric vehicle having an engine and a motor for controlling driving of the engine and the motor, comprising:
- a battery for supplying electric power to the motor;
- motor-generated driving-force transfer means for transferring the driving force generated by the motor to wheels;
- a power generator driven by the engine to supply generated electric power to the battery;
- engine-generated driving-force transfer means for transferring the driving force generated by the engine to wheels;
- running state detection means for detecting a vehicle running state;
- and
- control means for controlling whether to transfer a driving force generated by an engine to a generator or wheels in accordance with a detected vehicle running state, wherein the control means transfers the driving force generated by the engine when said running state is a predetermined value or more, transfers the driving force generated by the motor to wheels when said running state is less than the predetermined value, and transfers the driving force generated by the engine to the power generator, and wherein the control means sets a period for transferring the driving forces generated by both the engine and motor to wheels when said running state changes from a value equal to or less than a predetermined value to a value larger than the predetermined value.
4 more elements
Dependencies are inferred from the claim text.