Vehicle drive line controller

Details Vehicle drive line controller Vehicle drive line controller

2005-04-05

2005-04-05

Lewis, Tisha (Department: 3681)

Interrelated power delivery controls, including engine control

Transmission control

Continuously variable friction transmission

C477S041000, C475S210000, C701S054000

Reexamination Certificate

active

06875152

ABSTRACT:
In a controller of a vehicle transmission, the transmission includes a continuously variable transmission3and a planetary gear mechanism4and is coupled to an output of an engine1. The transmission includes a first shift mode using only the continuously variable transmission3and a second shift mode using in combination the continuously variable transmission3and the planetary gear mechanism4.The controller determines the shift mode based on load of the engine1according to a required output and an input/output revolution speed ratio γ of the continuously variable transmission3, and switches between the above two shift modes at the predetermined input/output revolution speed ratio.

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