192 clutches and power-stop control – Clutches – Fluent material
Patent
1991-02-19
1992-06-09
Lorence, Richard
192 clutches and power-stop control
Clutches
Fluent material
192 82T, F16D 3502
Patent
active
051199203
ABSTRACT:
A temperature-controlled fan fluid coupling for controlling a fan that provides cooling air to an automotive engine in response to the engine temperature. The coupling comprises a drive disk provided with communication holes, a rotor on which the drive disk is mounted, an enclosed housing held to the rotor, a cooling fan mounted on the housing, a partition plate that divides the inside of the housing into an oil reservoir chamber and a torque transmission chamber in which the drive disk is mounted, an oil outflow-adjusting hole formed in the partition plate, a circulation passage extending from the torque transmission chamber into the oil reservoir chamber, a main valve member, a bimetallic strip mounted on the front face of the cover of the housing and deforming with temperature, a torque transmission gap, a circulation hole formed in the partition plate and disposed substantially opposite to the communication hole in the drive disk, a short auxiliary valve member which can engage the communication hole to close off it, and adjusting holes formed in the auxiliary valve member. When the ambient temperature exceeds a preset temperature, the main valve member opens the outflow-adjusting hole. The fan fluid coupling can be partially engaged by actuating either the resilient valve member or the auxiliary valve member.
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Casella Anthony J.
Hespos Gerald E.
Lorence Richard
Usui Kokusai Sangyo Kaisha Ltd.
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