Direct-coupling control system for torque converter in automatic transmission for vehicles
This patent describes an automatic transmission for a vehicle, comprising a fluid torque converter having an input member and an output member; and an auxiliary transmission having stages of gear trains selectively connected to the output member of the torque converter and having frictionally engaging elements engageable upon receipt of hydraulic pressure fed through hydraulic fluid passages. A direct-coupling clutch and control system is described for the torque converter, which comprises: a direct-coupling clutch interposed between the input and output members for mechanically coupling the members together; and a hydraulic pressure source and the direct coupling clutch for controlling engagement of the clutch. The control means comprises an oil line, a valve in the oil line having first and second switching positions on opposite ends of the valve for opening the oil line and for temporarily releasing the pressure fed to the direct-coupling clutch at the time of shifting of the valve between the first and second switching positions.
- Assignee:
- Honda Giken Kogyo Kabushiki Kaisha, Tokyo
- Patent Number(s):
- US 4655330
- OSTI ID:
- 6635103
- Resource Relation:
- Patent File Date: Filed date 10 May 1983
- Country of Publication:
- United States
- Language:
- English
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