Nippon Soken, Inc.

Toyota Jidosha Kogyo Kabushiki Kaisha

Keiji Tsuchiya

Akio Nara

Hideaki Sasaya

Toshiharu Tatsunaka

Tsuyoshi Adachi

Around an engine-body of a vehicle, several auxiliary machinery such as an air-conditioner and a power steering-pump are disposed. Pulleys of said auxiliary machinery are driven by means of an endless belt or endless belts by a driving pulley of the engine. In order to obtain the most effective operation of the engine, consideration should be given to the degree of the power loss for driving the auxiliary machinery. For this purpose, according to the present invention, the order by which said several driven pulleys are driven by said driving pulley is determined by the magnitude of the driven torques of the corresponding auxiliary machinery along the running direction of the endless belt toward the driving pulley.

Driving method for auxiliary machinery of a vehicle

A vane pump comprising a cylindrical rotor provided with a diametrically extending vane groove, a vane slidably arranged in the vane groove in radial directions, a cylinder in which the rotor is rotatably arranged, the cylinder having an inner peripheral cam surface with which said vane always comes into sliding contact at its opposed ends, the cam surface of the cylinder having a profile defined by cycloid curves and/or arc portions which have a radius substantially equal to that of the rotor.

Growing community of inventors

Okazaki, Japan

Keiji Tsuchiya