F - Mech Eng,Light,Heat,Weapons – 16 – H
Patent
F - Mech Eng,Light,Heat,Weapons
16
H
F16H 61/14 (2006.01) F16H 61/06 (2006.01) F16H 59/36 (2006.01) F16H 59/46 (2006.01) F16H 61/00 (2006.01) F16H 61/02 (2006.01)
Patent
CA 2214065
Even if a rotational speed of an engine has already increased due to slipping of a fluid torque converter at the time of start of downshifting, a smooth downshifting is performed. For that purpose, there is obtained a speed change developing degree function K(etrm) of the rotational speed of the engine at the time of start of downshifting, the developing degree being dependent on an increase in the rotational speed of the engine due to slipping in the fluid torque converter. The function K(etrm) is obtained with a speed ratio "etrm" of the fluid torque converter at the time of starting of downshifting as a parameter. A boosting correction value QDNOFFZ is computed by multiplying a reference correction value QDNOFFZO by K(etrm) (step S108-5). The hydraulic pressure of the hydraulic engaging element on the disengaging side during downshifting is boosted by the amount of QDNOFFZ (step S108-6).
Ishibashi Hiromitsu
Miyamoto Osahide
Ohashi Tatsuyuki
Saito Yoshiharu
Tokita Kaname
Honda Giken Kogyo Kabushiki Kaisha
Marks & Clerk
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