Mazda Motor Corporation

Toshihiko Osumi

Kazuhiko Ueda

Sadashichi Yoshioka

Yukio Masuda

Kenichi Morizane

Hidenao Takedomi

Hidetoshi Shintani

Haruo Sakamoto

Shouhei Kumano

A control system for a toroidal type continuously variable transmission which incorporates a toroidal continuously variable gear mechanism comprising an input and an output toroidal disk and a roller disposed between the input and output toroidal disks and continuously varies a gear ratio according to inclinations of the roller actuates a stepping motor, when a specific driving condition which causes the continuously variable transmission to switch between a first and a second control mode and directional reversal of torque transmission through the toroidal continuously variable gear mechanism occurs with a result of causing a shift of the roller from one side to another side of the neutral position, to operate a double-slider shift valve to cause the shift of the roller in advance.

Control system for a continuously variable transmission

A toroidal type continuously variable transmission whose gear ratio is varied by changing the position of a trunnion is provided with double-slider valves driven by stepping motors and linear solenoid valves. The gear ratio control is performed by controlling position of the double-slider valves when the vehicle travels at speeds higher than a specified speed or by controlling directly line and relief pressures applied to the trunnion through the solenoid valves.

Control system for toroidal type continuously variable transmission

An auxiliary mechanism mounting structure for mounting an auxiliary mechanism on an engine has an auxiliary mechanism mounting portion whose bearing rigidity is high in the longitudinal direction of the engine and is low in the vertical direction of the engine so that the auxiliary mechanism is easy to vibrate in the vertical direction of the engine.

Auxiliary mechanism mounting structure for an engine

Growing community of inventors

Hiroshima, Japan

Toshihiko Osumi