Bergstrom Engineering Services
Test & Development
Bergstrom has designed and manufactured HVAC systems for the commercial vehicle industry for over 70 years. Helping our customers succeed in the face of mounting competition is one of our top priorities. We have a staff of engineering professionals equipped with the finest facilities and available advanced technologies to provide state-of-the-art testing and development services.
Vehicle Environmental Chamber
With the automotive industry constantly changing and adding new innovative technology, the need for testing either for research or manufacturing is more important than ever. All components and systems can be tested in environments that reflect weather conditions all over the world. Our team can help customize your specific environmental testing applications.
Available Services:
Full vehicle instrumentation
Vehicle component simulation, cabin only testing
High speed data acquisition
Data analysis
Comprehensive test report
Test Ranges Include:
Temperature: -20°C ~ +52°C
Relative Humidity: 10% ~ 98%
Air Flow: 1.5m/s ~ 8.5m/s
Coolant Temp: -18°C ~ +91°C
Max Coolant Flow: 17L/min
Chamber Size: 4.9m X 14.6m X 5.8m
Door Size: 3.6m X 5.5m
Max Solar Power: 1000W/m2
Available Testing and Evaluations:
Air Conditioning System Performance
Heater System Performance
Defrost System Performance
Cab Insulation Testing
Air flow
Cabin pressurization
Infra-Red Evaluation
ATC Development
Charge determination
HALT Testing
Bergstrom offers HALT (highly accelerated life test), a stress testing methodology for improving product reliability. We work with customers to define and direct the testing process, using the temperature and/or vibration stresses available in accelerated life testing independently or in combination.
Typical Approach to Component Durability Analysis:
Temperature step study
Vibration step study
Combined temperature and vibration study
Test Ranges Include:
Temperature: -100°C ~ +200°C
Max. Temp. Change Rate: 60°C/min
Vibration Level: 80Grms
Vibration Table Size: 1m X 1m
Frequency Range: 20Hz ~ 5000Hz
Vibration and Reliability
The demands made on HVAC equipment performance and reliability are constantly changing as the world around us gets increasingly more automated and as the machinery gets more powerful. One of the key components to testing the performance of products and systems is by using shock and vibration testing to measure and understand a product’s response to a dynamic environment. Our skilled team can help properly gather and analyze the shock and vibration data for performance evaluation.
Environmental (AGREE) Table:
Cooling rate of 2.5C/min
Temperature: -70°C ~ +150°C
Relative Humidity: 25% ~ 98%
Chamber Size: 1.4m X 1.3m X 1.5m
Data Acquisition and Analysis:
16 channel measurement in application
Ability to analyze and combine profiles
Develop accelerated vibration profile from recorded data
Vibration profile control with Kurtosion method
Vibration Table:
Large 48″x48″ & Small 32″x32″ Slip Tables & Head Expanders
Force, Sine and Random: 68.5kN
Force, Shock: 137kN
Usable Frequency DC: 2500Hz
Max Velocity (sine): 1.8m/s
Max Acceleration (sine): 100G
Max Static Payload: 1000kg
Armature Load: 62kg
Armature Diameter: 480mm
Max Acceleration, Shock: 100G
An important competitive advantage is our flexible, responsive resource base. Bergstrom has positioned engineering, sourcing, test and manufacturing capabilities around the globe offering tremendous economics and service to our customers.
For more information about our engineering services please email testing@bergstrominc.com.
