There is no clutch between the engine and the gearbox of an automatic transmission car. The connection between them is realized by a torque converter. The hydraulic oil inside the torque converter will seriously affect the transmission effect if it leaks. Leak test must be performed before leaving the factory. 　　 The testing equipment has the following advantages: 　　 High degree of automation: fully automatic assembly line, manipulator loading and unloading, leak detection 　　No manual intervention required 　　 Fast detection cycle: less than 60 seconds/piece 　　 High detection accuracy, minimum leak detection 1×10-7 Pa·m 3/s 　　Helium recovery rate: ≥98% 　　With barcode scanning, data logging, fault logging, label printing, etc.