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Turbocharger flow benches Combined high-speed core balancing machine and dynamic turbocharger flow bench

TURBO TEST DUO BIG

Combined high-speed core balancing and dynamic flow bench for large turbochargers across passenger car to heavy-duty truck applications.

High-speed core balancing Dynamic turbocharger flow bench Automatic speed/cycle control Automatic correction point calculation Reverse rotation core balancing Static turbine mass flow measurement Dynamic measurement with rotational speed 12V/24V electric actuator current measurement REA operating angle programming Siemens VDO adaptation HELLA electric actuator clearance measurement Position sensor voltage measurement Vacuum/pressure actuator rod adjustment VNT lever operating angle check Holset actuator programming High-speed core balancing Dynamic turbocharger flow bench Automatic speed/cycle control Automatic correction point calculation Reverse rotation core balancing Static turbine mass flow measurement Dynamic measurement with rotational speed 12V/24V electric actuator current measurement REA operating angle programming Siemens VDO adaptation HELLA electric actuator clearance measurement Position sensor voltage measurement Vacuum/pressure actuator rod adjustment VNT lever operating angle check Holset actuator programming
Selected Capabilities
High-speed core balancing
Dynamic turbocharger flow bench
Automatic speed/cycle control
TURBO TEST DUO BIG

The Turbo Test Duo Big combines a high-speed core balancing machine and a turbocharger calibration machine, also known as a flow bench. The machine supports turbochargers for passenger cars, light-duty trucks, and heavy-duty trucks.

In addition to high-speed balancing, the machine enables turbocharger calibration by adjusting the air mass flow of the turbine section. Measurement can be conducted in static or dynamic mode. Dynamic mode enables measurement of the turbocharger’s rotational speed, making it possible to determine the turbocharger’s technical condition and achieve more precise adjustment than static mode alone.

This model enables you to restore 100% of a turbocharger’s performance through calibration based on the pressure ratio measured under load at high speeds. The pressure ratio is the turbocharger’s outlet parameter that defines its performance, enabling the most precise determination of technical condition and the most accurate calibration.

Wesentliche Merkmale

High-speed core balancing
Dynamic turbocharger flow bench
Automatic speed/cycle control
Automatic correction point calculation
Reverse rotation core balancing
Static turbine mass flow measurement
Dynamic measurement with rotational speed
12V/24V electric actuator current measurement
REA operating angle programming
Siemens VDO adaptation
HELLA electric actuator clearance measurement
Position sensor voltage measurement
Vacuum/pressure actuator rod adjustment
VNT lever operating angle check
Holset actuator programming

Technical Specifications

HIGH SPEED CORE BALANCING MACHINE

Maximum Turbine Wheel Diameter114 mm (Exducer) / 134 mm (Inducer)
Maximum Compressor Wheel Diameter179 mm
Maximum Rotational Speed Value300.000 t/min
Unit Of MeasurementG, m/s²
Speed / Cycle ControlAutomatic
Correction PointAutomatically calculated
Reverse Rotation Core BalancingJa

FLOW BENCH PARAMETERS

Maximum Turbine Inlet Air Pressure250 kPa
Air Mass Flow Measurement Accuracy+/- 1 kg/h
Maximum Mass Air Flow That Can Be Measured450 kg/h at 1 bar turbine inlet pressure at 25°C air injection temperature
Maximum Volume Air Flow That Can Be Measured380 m³/h at a turbine inlet pressure of 1 bar and an inlet air temperature of 25°C
Turbocharger PositionLike in a car with an oil drain directed downward to achieve the highest measurement accuracy

PRO VS EXPERT COMPARISON

Function Turbo Test Duo Pro Turbo Test Duo Expert
High-speed core balancing Ja Ja
Static measurement of turbine section mass flow Ja Ja
Dynamic measurement of turbine section mass air flow while the simultaneous measurement of turbocharger rotational speed. Ja Ja
P2/P1 turbocharger pressure ratio measurement under load at high-rotational speed while the simultaneous measurement of turbocharger rotational speed. - Ja
Compressor section volume air flow measurement. Optional Optional
12V and 24V electric actuator current draw measurement. Ja Ja
REA operating angle programming. Ja Ja
Siemens VDO adaptation Ja Ja
Clearance measurement of HELLA electric actuators Ja Ja
Voltage measurement of position sensors Ja Ja
Rod length adjustment of vacuum and pressure actuators according to mass air flow Ja Ja
VNT lever operating angle check Ja Ja
Holset electric actuator programming – the expected release date is the 2nd quarter of 2022 Ja Ja

Model Comparison

Feature Turbo Test Duo Pro Turbo Test Duo Expert
High Speed Core Balancing Ja Ja
Static Turbine Section Mass Flow Ja Ja
Dynamic Turbine Section Measurement Ja Ja
P2 P1 Pressure Ratio Measurement Nein Ja
Compressor Section Volume Flow Optional Optional
12v 24v Actuator Current Draw Ja Ja
Rea Operating Angle Programming Ja Ja
Siemens Vdo Adaptation Ja Ja
Hella Actuator Clearance Measurement Ja Ja
Position Sensor Voltage Ja Ja
Vacuum Pressure Actuator Rod Adjustment Ja Ja
Vnt Lever Operating Angle Check Ja Ja
Holset Programmer Ja Ja

Frequently Asked Questions

The TURBO TEST DUO BIG is a combined high-speed core balancing machine and dynamic flow bench designed for large turbochargers. It supports turbochargers across passenger car to heavy-duty truck applications, combining balancing and calibration in one machine.

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