Arent Fox Kintner Plotkin & Kahn, PLLC
Control system for automatic vehicle transmissions
A system for controlling an automatic transmission of a vehicle, wherein if the change of the destined gear GB (i.e., the target gear SH) is required when the jumping shift, i.e., two-gear downshifting is in progress, the input/output rotational speed ratio GRATIO (indicative of degree of shift progress) is compared with the predetermined input/output rotational speed ratio #GRCN312 or #GRCN423, and based on the result of comparison, how the shift to establish or effect the required destined gear GB, i.e., the shift mode QATNUM is determined, thereby enabling to improve or enhance the response to the change of the destined gear GB during two-gear downshifting. It can also prevent the clutch from being degraded in such a shifting.
Honda Giken Kogyo Kabushiki Kaisha
F F F Y Y F
F16H F16H F16H Y10T Y10T F16H
inventional additional additional additional additional inventional
Yoshiharu Masamitsu Masahide Yoshikazu Satoshi Yasushi
Saito Fukuchi Saito Nemoto Kato Inagawa