Coolant pulsation testing machine，Coolant pressure pulse test system

The Coolant Pulsation Testing Machine is a precision testing system designed to evaluate automotive cooling components under dynamic pressure conditions. You can use it to test radiators, rubber hoses, expansion tanks, and other cooling system parts for durability, leakage, and functional performance. The front-and-rear dual-door design allows easy installation and removal of samples, while the system automatically detects leaks and shuts down failed samples to ensure safe, reliable operation.

Application

The Coolant Pulsation Testing Machine is suitable for a wide range of automotive testing applications:

Radiator Testing: Evaluate structural integrity and leak resistance under pulsating pressure and thermal load.

Rubber Hose Testing: Test durability, pressure pulsation resistance, and functional lifespan of coolant hoses, including aramid-reinforced hoses.

Expansion Tank Testing: Verify thermal stability and mechanical durability under dynamic coolant flow.

Component Validation: Conduct system-level verification for cooling components before vehicle integration.

Automotive R&D: Support material selection, design optimization, and durability assessment of cooling systems.

Typical test products include radiators, coolant hoses, expansion tanks, thermoplastic and composite cooling system components.

Standards

The system supports compliance with major automotive industry standards:

TL 889 / TL 874 (4.4) – Volkswagen Group technical specification for cooling system materials and radiator functionality testing.

TL 52361 (6.1.1 / 6.1.2) – Volkswagen Group specification for coolant hoses (including aramid-reinforced) and functional performance (pressure pulsation and long-term static testing).

TL 52682 (6.11 / 6.12) – Volkswagen Group specification for glass-fiber reinforced PA66 used in cooling system components, including dynamic and static durability tests.

GMW15310 – General Motors global engineering standard for materials and component performance, including integrated vehicle/system testing.

GMW14322‑2016 (4.13) – GM global standard for environmental and durability testing with specific requirements.

GMW16288 – GM system-level durability and verification standard for cooling system components.

Parameters

Parameter Category	Details
Equipment Dimensions	4350 mm × 2520 mm × 2150 mm (W × H × D)
Environmental Chamber Dimensions	1800 × 1000 × 1000 mm (W × H × D)
Rated Power	60 kW
Test Medium	Glycol/Water
Pressure Range	0…5 bar
Medium Flow Control	Up to approx. 100 l/min
Linear Motion Parameters	±25 mm at 1 Hz ±12 mm at 5 Hz ±6 mm at 10 Hz ±2 mm at 20 Hz
Test Medium Temperature Range	-40°C … +150°C
Environmental Temperature Control	-40°C … +150°C
Test Channels	8

Features

Pressure pulsation testing machine with linear and eccentric motion device.

Pressure range from 0.1 up to max. 5 bar.

Heating of the environmental chamber through monitoring and limiting maximum surface temperature.

Automatic leak detection and leak testing with automatic shutdown of failed samples.

Automatic return pump to prevent coolant leakage.

Windows/LabVIEW-based control unit with integrated data acquisition and recording.

Accessories

Linear and eccentric motion drive unit

Environmental chamber with dual doors

Automatic leak detection sensors and safety shut-off

Coolant circulation and return pump

Windows/LabVIEW control system with data logging

Heating and temperature control modules

Test Procedures

Ensure installation space allows safe operation and access to all test channels.

Connect the system to the 60 kW power supply and ensure environmental temperature control is set.

Fill the system with glycol/water test medium.

Install the radiator, hose, or expansion tank in the test chamber.

Close front and rear doors to seal the chamber.

Set the desired pressure range, linear motion parameters, and temperature profiles in the control unit.

Start the test program via Windows/LabVIEW interface.

Monitor pressure, motion, temperature, and leak sensors throughout the test.

Automatically shut down any failed or leaking samples.

After testing, safely drain the test medium and allow the chamber to cool before removing samples.

Maintenance Information

Regularly inspect the motion drive, pressure sensors, and leak detection units for wear or damage.

Check glycol/water circulation system for blockages or leaks before each test.

Calibrate sensors and temperature controllers periodically to maintain measurement accuracy.

Clean environmental chamber surfaces and doors to prevent corrosion.

Replace worn seals, gaskets, or insulation as necessary to ensure safe operation.

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