| 摘要 |
PURPOSE: A performance tester for an oil cooler is provided to improve drawbacks of a performance tester for an oil cooler using a conventional manual hydraulic pressure-resistant testing device and a servo valve. CONSTITUTION: A performance tester for an oil cooler comprises a hydraulic source(100), a hydraulic tank(110), a hydraulic pump(120), a pressure cylinder(210), a pressure unit(200), a serve motor(220), a chamber(400) and a return line(500). The hydraulic source consists of a hydraulic tank and a hydraulic pump. Inlet port of the pressure cylinder is connected to the outlet port of the hydraulic source through a check valve. The servo motor makes the piston of the pressure cylinder move back and forth. The pressure unit consists of the pressure cylinder and the servo motto.
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