Automatic transmission with lockup converter clutch controls

Details Automatic transmission with lockup converter clutch controls Automatic transmission with lockup converter clutch controls

1986-11-06

1988-05-17

Staab, Lawrence

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74864, 192 33, B60K 4122

Patent

active

047442697

ABSTRACT:
A hybrid hydraulic and electronic control valve system for an automatic, multiple-speed motor vehicle transmission having a torque converter with a lockup clutch and change-speed gearing adapted for four forward ratios and one reverse ratio, a converter lockup clutch control valve in conjunction with a lockup clutch shift valve adapted to control the lockup clutch and an electronic control module for superseding the action of the lockup clutch shift valve.

REFERENCES:
patent: 4432255 (1984-02-01), Borman et al.
patent: 4457410 (1984-07-01), Suga et al.
patent: 4478322 (1984-10-01), Carlson et al.
patent: 4495576 (1985-01-01), Ito
patent: 4559850 (1985-12-01), Sakakibara
patent: 4589537 (1986-05-01), Nishikawa et al.
patent: 4595088 (1986-06-01), Sugano
patent: 4638690 (1987-01-01), Hattori et al.

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