Interrelated power delivery controls – including engine control – Transmission control – Including fluid drive
Patent
1996-10-04
1998-09-01
Marmor, Charles A.
Interrelated power delivery controls, including engine control
Transmission control
Including fluid drive
477 64, 477175, F16H 6100
Patent
active
058003061
ABSTRACT:
An automatic power transmission assembled with a torque converter includes a lock-up mechanism for controlling the automatic power transmission with detecting a state of progress of a shifting operation in the automatic power transmission. A driving torque of an engine is temporarily lowered at a timing in the vicinity of completion of the shifting operation. The timing is determined by calculating data indicative of the state of progress of the shifting operation of the automatic power transmission on the basis of the result of a ratio value, which is determined by multiplying a transmission gear ratio (Gn) at a transmission speed range of the automatic power transmission after shifting with a rotation speed (Np) of an output shaft of the automatic power transmission and dividing the result by a revolution speed (Ne) of an engine connected to the torque converter detecting a state of the lock-up mechanism between a lock-up state and a non-lock-up state, modifying shifting timing indicative reference data depending upon the state of the lock-up mechanism and detecting the timing when the calculated data reaches the reference data.
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Patent Abstract of Japan, abstract of ABE, "Engine Control Device In Vehicle With Automatic Transmission", Japanese 63-105247, May 10, 1988.
Jatco Corporation
Kwon Peter T.
Marmor Charles A.
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