Field-proven test equipment
Our product range consists of three devices: a test and cleaning device for solenoid valves, a test platform for DSG mechatronic units, and an RPM simulator that feeds sensor signals to an engine control unit on the bench. We design, manufacture and program all three in-house. Our partners bring the devices to market under their own brands; the engineering, production, software updates and technical support are provided by DST.
Solenoid Test & Cleaning Device
Solenoid valves are parts that are frequently removed from automatic transmissions and often replaced without being measured. This device lets you connect four valves at once; it drives each channel individually, measures its current and derives its resistance. The device is not tied to a specific transmission type; with the 5 V / 12 V supply selection it can be used with different valve types.
Five operating modes: MANUAL (drive while held), PROPORTIONAL PWM (0–100 % live slider), PULSE (single valve, 1–10 pulses per second), CLEANING (connected valves are pulsed in turn while immersed in solution; 1–60 min timed, also started with the button on the device) and AUTOMATIC MEASUREMENT (resistance and current table for all valves, PDF report).
Protection: per-channel short-circuit lock (adjustable threshold), total current ceiling and automatic cut-off of an idle supply. The lock reason is shown clearly in the app and cleared with one tap.
DSG Mechatronic Test Device
The DSG mechatronic unit is the hydraulic and electronic control centre of the transmission; its behaviour can only be observed under working pressure. The DSG Mechatronic Test Device pressurises the unit on the bench with its own pump, drives the eight solenoid valves individually and continuously monitors each channel's current and the line pressure.
The automatic test program runs the stages you select in sequence: solenoid check, pump and pressure test, leak test and up to 1,000 gear changes. In the leak test, the pressure drop is measured over a set period for the body and for each solenoid step; threshold and duration are adjustable from the app (factory setting 18 bar / 50 s). In manual mode, valves are driven while held and gears are selected one at a time.
The whole flow is managed from the Android app over Bluetooth; if the connection drops, the device completes the running test on its own. The live pressure chart, event log and measurement table go into a PDF report; reports are stored in the cloud. Device firmware is updated through the app.
RPM Simulator
The RPM simulator feeds crankshaft and camshaft sensor signals to an engine control unit (ECU) on the bench without the vehicle's engine. The crank and cam channels are driven with Hall (open-collector) or VR (inductive) sensor characteristics; polarity, phase and amplitude are set per channel.
Speed is changed live in the 30–8,000 rpm range together with the ramp rate. The factory pattern is 60-2; missing-tooth crank, N+1 cam and table-type patterns are loaded from the app's library or defined as your own (up to 255 teeth per channel). The cranking scenario plays the transition from cranking speed to idle with one tap. The button on the device stops the signal; the LED shows the state.
The device only generates signals; it does not test or validate the ECU's behaviour. Library patterns are general references and have not been verified with any specific ECU.
