Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1990-12-17
1992-06-30
Lorence, Richard
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
74844, 74867, B60K 4118
Patent
active
051252937
ABSTRACT:
The present invention relates to an adaptive correction of servo activating hydraulic fluid pressure during shift. In one embodiment according to the present invention, a ratio of a mass airflow rate of intake air admitted to an engine (Qa) to a revolution speed of a transmission output shaft (No) is calculated, and a first parameter (TqSEN) is determined in response to the ratio (Qa/No). Besides, a second parameter (No) is the transmission output shaft speed (No). The servo activating hydraulic fluid pressure is determined in response to this first and second parameters. In another embodiment, a turbine shaft speed (Nt) is calculated from the output shaft speed (No) and a gear ratio (g) of a gear position established before shifting. The turbine shaft revolution speed (Nt) is used instead of the output shaft speed (No) in determining the first parameter (TqSEN).
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"Nissan Full-Range Automatic Transmission RE4R03A Type, Service Manual, (A261C10)", 1988.
Lorence Richard
Nissan Motor Co,. Ltd.
Stavish Matthew
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