Accumulator fluid temperature estimation algorithm
AssigneeGM Global Technology Operations LLC
InventorsPaul G. Otanez, Zhen J. Zhang
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Abstract
A system includes an accumulator control module that selectively releases automatic transmission fluid from an accumulator. The accumulator control module also receives a plurality of measured characteristics of the accumulator. A temperature estimation module estimates a temperature of the automatic transmission fluid within the accumulator based on at least one of the measured characteristics of the accumulator. An engine start-stop module selectively disables automatic start-stop events of an internal combustion engine based on the estimated temperature of the automatic transmission fluid within the accumulator.
Claims19
A system comprising:
- an accumulator control module that selectively releases automatic transmission fluid from an accumulator and that receives a plurality of measured characteristics of the accumulator;
- a temperature estimation module that estimates a temperature of the automatic transmission fluid within the accumulator based on at least one of the measured characteristics of the accumulator;
- and
- an engine start-stop module that selectively disables automatic start-stop events of an internal combustion engine based on the estimated temperature of the automatic transmission fluid within the accumulator.
A method comprising:
- selectively releasing automatic transmission fluid from an accumulator;
- receiving a plurality of measured characteristics of the accumulator;
- estimating a temperature of the automatic transmission fluid within the accumulator based on at least one of the measured characteristics of the accumulator;
- and
- selectively disabling automatic start-stop events of an internal combustion engine based on the estimated temperature of the automatic transmission fluid within the accumulator.
Dependencies are inferred from the claim text.