| 摘要 |
<p>PURPOSE:To prevent abnormal exothermicity by adjusting the control rate of supply pressure to a fluid transmitting means in correspondence with the temperature change of an operating fluid. CONSTITUTION:A heat sensitive drive unit 60 adjusts the control rate of oil pressure fed to a torque converter 7 in correspondence with oil temperature. With the rise of oil temperature, supply oil pressure in an oil passage 42 to the torque converter 7 rises because of being proportional to line pressure, which results in increasing flow. Accordingly, the flow of the oil passage to the torque converter 7 is increased to comparatively high vehicle speed with the rise of oil temperature. Pressure oil to a cooling oil pressure circuit can be thereby cooled efficiently, so that the generation of abnormal exothermicity can be prevented.</p> |
