Method and apparatus for controlling power transmission system in an automotive vehicle
Patent
·
OSTI ID:6377632
This patent describes a method of controlling a power transmitting system for an automotive vehicle which includes an engine. The power transmitting system has a continuously variable transmission with a continuously variable speed ratio, and an auxiliary transmission which is connected in series with the continuously variable transmission. This has at least two shift positions for forward driving of the vehicle. The auxiliary transmission is automatically shifted from one of at least two shift positions to the other. The method comprises the step of: automatically shift the auxiliary transmission from one of at least two shift positions to the other based on an actual running speed of the vehicle; an actually required power output of the engine with an actual speed ratio of continuously variable transmission.
- Assignee:
- Toyota Jidosha Kabunshiki Kaisha, Aichi
- Patent Number(s):
- US 4672863
- OSTI ID:
- 6377632
- Country of Publication:
- United States
- Language:
- English
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