Akebono Brake Industry Co., Ltd.

Shigeki Tsuchiya

Katsuya Miyake

Hirotaka Nakamura

Yoshiaki Hirobe

Yoshihisa Iwasa

Astushi Nishijoh

A wheel lock prevention system prevents locking of wheels in a vehicle including a front axle having right and left front wheels, a first rear axle having right and left driving wheels, and a second rear axle having right and left follower wheels. A control part determines that locking or skidding of particular wheels may occur based on signals from sensors. In response, the control part transmits a signal to apply the appropriate brake force to the appropriate wheels.

ABS control for individual axles of a three axle vehicle

Disclosed is a solenoid valve device having a bobbin assembly 3 including an outer yoke 105 as a magnetic circuit, a solenoid coil 20 positioned within the outer yoke 105, and a connector pin 107 for supplying the electric current to the solenoid coil 20. The bobbin assembly 3, which is molded of at least two layers of resins, has an inner resin section 120 for integrally setting at least the outer yoke 105 and the solenoid coil 20 together, and an outer resin section 125 to enclose the inner resin section 120, forming the outer surface of the bobbin assembly 3. This inner resin section 120 is formed of a resin having a higher coefficient of thermal expansion than the outer resin section 125, while the outer resin section 125 is formed of a resin having a higher dimensional stability than the inner resin section 120.

Solenoid valve device

A traction controlling apparatus employable in a multi-axle vehicle wherein anti-lock braking and traction controlling can be achieved with a small number of channels. The traction controlling apparatus is constructed such that air pressure control type cut valves are disposed at intermediate positions in hydraulic lines such that wheel cylinders for driving wheels and wheel cylinders for follower wheels are hydraulically communicated with each other. The hydraulic lines can be opened or closed by actuating the air pressure control type cut valves, and air pressure delivered from the traction control valve is applied tot he air pressure control type cut valves so as to allow the hydraulic paths to be closed by the air pressure control type cut valves only when the vehicle is held in the traction controlling state.

Growing community of inventors

Saitama, Japan

Shigeki Tsuchiya