Drive train components (transmission, differential gears, etc.) can be made smaller and lighter if the excessive torque exerted on them can be reduced during the quick start of a vehicle. An orifice put in the hydraulic clutch piping path is an effective method. However, increased oil viscosity at low temperatures (0°C or below) makes the “pedal feel” worse. In order to increase the orifice diameter for better “pedal feel”, a shape memory alloy spring, for operation at low temperatures, was developed by adding cobalt to the nickel-titanium alloy. Consequently, a Variable-Orifice valve, using the shape memory alloy spring, is practical.
Development of Shape Memory Alloy Spring for Oil Flow Control Valve in Clutch System
Sae Technical Papers
International Congress & Exposition ; 1996
01.02.1996
Aufsatz (Konferenz)
Englisch
Development of shape memory alloy spring for oil flow control valve in clutch system
Kraftfahrwesen | 1996
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