Toyota Jidosha Kabushiki Kaisha

Toyoda Koki Kabushiki Kaisha

Kenji Arai

Kunihiko Suzuki

Hiroshi Takuno

Hiroyuki Ogawa

Tsuyoshi Murakami

Naoyuki Sakai

Naoyuki Kokubo

Mitsuru Ohba

Satoshi Ashida

Mikiharu Oyabu

Hisashi Fukuchi

Yoshiaki Senga

Akio Mukainaka

A vehicle driving force control device including an input shaft rotation number sensor which detects a transmission input shaft rotation number to be input from an engine to an automatic transmission, an accelerator opening sensor which detects accelerator opening, a TCU for calculating a required output of the automatic transmission based on the transmission input shaft rotation number and the accelerator opening, and an electronic control unit which controls the engine and the automatic transmission based on the required output. The TCU sets the required output to a constant value regardless of the transmission input shaft rotation number when the accelerator opening is not larger than a predetermined value, and sets to increase or decrease the required output according to increase and decrease of the transmission input shaft rotation number when the accelerator opening is larger than the predetermined value.

Vehicle driving force control device

A driving force control apparatus of a motor vehicle including a first set of drive wheels and a second set of drive wheels, e.g., front wheels and rear wheels, which are driven with respective driving forces that are controlled independently of each other. The control apparatus calculates an actual slip rate difference between a slip rate of the first set of drive wheels and that of the second set of drive wheels, and controls distribution of driving force between the first set of wheels and the second set of wheels, based on the slip rate difference.

Driving force distribution control apparatus and method of motor vehicle

A drive force transmission apparatus includes a housing connected to one of two shafts that are rotatable relative to each other, a rotary shaft rotatably supported by the housing and connected to the other shaft, and a multiple disc clutch composed of a plurality of outer plates engaged with the housing in the rotational direction and a plurality of inner plates engaged with the rotary shaft in the rotational direction. The multiple disc clutch transmits rotational torque between the housing and the rotary shaft through frictional engagement between the outer plates and the inner plates. The apparatus also includes a pressure generation mechanism for generating a pressure corresponding to a rotational-speed difference between the housing and the rotary shaft and for applying the generated force to the multiple disc clutch via a piston. The pressure generating means is composed of a plurality of rotary blades accommodated within a cylindrical space formed between the piston and the housing and rotating together with the rotary shaft, a viscous fluid charged into a plurality of pressure chambers defined by the housing, the piston, and the rotary blades, and a free blade accommodated within at least one pressure chamber. The free blade is freely movable in the circumferential direction between the rotary blades.

Drive force transmission apparatus

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Toyota, Japan

Kenji Arai