Warm-up promotion device for automatic transmission

Details Warm-up promotion device for automatic transmission Warm-up promotion device for automatic transmission

1983-06-27

1987-07-21

Look, Edward K.

Power plants

Pressure fluid source and motor

Condition responsive control means responsive to, or...

60337, 192 328, F16D 3100

Patent

active

046809287

ABSTRACT:
An automatic transmission has a torque convertor, an inlet passage connecting between an oil inlet of the torque convertor and an outlet of a hydraulic pump driven by an engine, and an outlet passage connecting between an oil outlet of the torque convertor and an oil tank, the outlet passage being provided at its intermediate portion with an oil cooler. The warming up of the transmission after start up in a cold state is promoted by a warm-up promotion device which comprises a by-pass passage branched from the outlet passage at a portion upstream of the oil cooler and leading to the oil tank, and a by-pass valve associated with the by-pass passage and adapted to open the by-pass passage during warming up of the automatic transmission.

REFERENCES:
patent: 3063245 (1962-11-01), Rippy
patent: 3774734 (1973-11-01), Forster et al.
patent: 3951242 (1976-04-01), Fischer et al.
patent: 4096693 (1978-06-01), Kawamoto
patent: 4209985 (1980-07-01), Master
patent: 4458720 (1984-07-01), Gierer
patent: 4597482 (1986-07-01), Sakurai et al.

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