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Transactions of the Japan Society of Mechanical Engineers. B | 1992

Noise Reduction of Automobile Cooling FanAnalysis on Generation Mechanism of Discrete Frequency Noise.

Kiyoshi Kawaguchi; Masahiko Suzuki; Kazuma Matsui; Koji Kikuyama

Among noises emitted from an automobile radiator cooling system, discrete-frequency noise is found to be largely related to the uneven velocity distribution of the flow to the fan. When the inflow is asymmetric with respect to the axis, each blade undergoes a change of velocity in every rotation, which generates cyclic pressure change in the suction side of the blade. By using an aerofoil with 6 percent camber, the decrease in the pressure fluctuation and discrete-frequency noise is obtained without any deterioration in the fan performance.


Archive | 1985

Position analyzer for vehicle drivers

Hiroshi Ishikawa; Kazuma Matsui; Takashi Kurahashi; Hidehiko Akatsuka; Motokazu Yamada


Archive | 1984

Windshield wiper control apparatus

Yoshiaki Fukatsu; Takashi Kurahashi; Kazuma Matsui


Archive | 1984

Fog detecting apparatus for use in vehicle

Kanehito Nakamura; Kazuma Matsui; Takashi Kurahashi; Hiroshi Ishikawa


Archive | 1983

Windshield wiper control device

Yoshiaki Fukatsu; Takashi Kurahashi; Kazuma Matsui; Hiroki Ito


Archive | 1992

Automotive solar-operated deodorizer with solar cell cooling and automated operational control

Kiyoshi Kawaguchi; Norihisa Itoh; Kouji Yamashita; Kazuma Matsui


Archive | 1985

Variable capacity radial piston pump

Masatoshi Kuroyanagi; Masahiko Suzuki; Kohichi Moriguchi; Kazuma Matsui; Hiroshi Iwata


Archive | 1984

Car actuator controller

Hidehiko Akatsuka; Hiroshi Ishikawa; Takashi Kurahashi; Kazuma Matsui; Genichi Yamada


SAE transactions | 1991

High Speed Control of Damping Force Using Piezoelectric Elements

Makoto Shiozaki; Shigeru Kamiya; Masatoshi Kuroyanagi; Kazuma Matsui; Ryohei Kizu


Archive | 1984

Automatic adjusting device of back mirror

Hidehiko Akatsuka; Hiroshi Ishikawa; Takashi Kurahashi; Kazuma Matsui; Genichi Yamada

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