Fuji Jukogyo Kabushiki Kaisha

Shinroku Momose

Yasuhiko Miyamoto

Tokuichi Mizunuma

A steering system and method of a mowing vehicle comprise Left and right rear wheels rotating about a king pin for steering the vehicle, an Ackermann steering mechanism for steering these left and right rear wheels and a rear axle housing swingably connected with the vehicle about a yawing axis in a horizontal plane by use of a hydraulic cylinder. When the vehicle makes a U-turn for example to the right during the mowing work, the rear axle housing is fully swung to the left in the horizontal plane by a specified angle and fixed therein while the left and right rear wheels are held at the neutral position. After the rear axle housing is fixed at that angle, the left and right rear wheels are rotated about the king pin to the left and then the vehicle makes a U-turn to the right. When the vehicle finishes to turn, the left and right rear wheels are rotated about the king pin to the right until the neutral position and then the rear axle housing is swung in the horizontal plane back to the right until the neutral position. When the vehicle makes a U-turn to the left, the same operations are carried out. Since the rear wheels are steered after the rear axle housing is swung in the horizontal plane and fixed, the vehicle can make a U-turn with a minimal turning radius, retaining the Ackermann steering condition and the lawn can be prevented from being damaged by the wheels.

Steering system for working vehicle and the method thereof

An exhaust system of an internal combustion engine comprising an ejector provided in the exhaust pipe of the engine and a compressor driven by the engine. Pipes are provided for selectively supplying compressed air to a nozzle of the ejector and to the intake pipe of the engine by operating valves. The exhaust pipe of the engine is communicated with an exhaust pressure reducing chamber of the ejector. The valves are adapted to be operated by the throttle valve of the engine and are so arranged that the compressor is communicated with the ejector in part-open throttle operation and with the intake pipe in wide-open throttle operation.

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Ota, Japan

Shinroku Momose