Method of predicting transmission oil temperature

Details Method of predicting transmission oil temperature Method of predicting transmission oil temperature

1993-05-19

1994-06-14

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

374141, G01M 1900

Patent

active

053199634

ABSTRACT:
A method for predicting the temperature of automatic transmission fluid, in real time, in an automatic transmission. The method involves determining a constant for thermal inertia of the transmission, determining a torque converter heat flow, determining a transmission heat flow, determining a transmission cooler heat flow and determining an exterior-of-transmission heat flow. From each of the four above-mentioned heat flows and the above-mentioned constant, the transmission fluid temperature is predicted. The predicted temperature is used to modify operational parameters of the transmission such as its shift tables.

REFERENCES:
patent: 3882740 (1975-05-01), Forster et al.
patent: 4445599 (1984-05-01), Bopp
patent: 4462492 (1984-07-01), Mueller
patent: 5107246 (1992-04-01), Mogaki

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