Valve body test machine VBTM-K

The VALVE BODY TEST MACHINE VBTM-K is designed for testing and diagnostics of valve
bodies of automatic transmissions.

This machine imitates the operation of an electronic control unit of an automatic
transmission by means of an electronic controller and supplies voltage to the solenoids
of the valve body, according to pre-written gearshiſt algorithms. Then the output
pressure readings are taken from each channel, graphs are formed showing the deviation
of the pressure of the tested valve bodies from the reference (valve bodies). The testing
process is carried out with ATF working fluid heated to operating temperatures and
located at various inlet pressures. This eliminates the error that occurs when the
viscosity of ATF changes at different temperatures.
Graphs with reference tests of the new valve bodies are preloaded into the soſtware.

The sequence of work:
1. The valve body is installed on the adapter plate, sensors are connected to the
output channels and the operator starts the first test.
2. The set of tests is repeated for different values of the inlet pressure.
3. Aſter the test completion, a graph with the test result is displayed on the screen.

Please note: the VBTM-K valve body test machine gives out a certain algorithm that the
valve body should perform. At the same time, the VBTM-K valve body test machine can
set various operating modes of the valve body for a full check of its reliability and fault
tolerance. Pressure sensors are installed on the output oil lines coming from the valve
body, which take readings at each unit of time.