ACS Experience in Drive-In Rolling Bench Chambers
In the pursuit of quality and reliability ACS has been working with the automotive industry for over 30 years.
Their extensive client list below bears witness to that:
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- FERRARI (ITALY)
- FIAT (ITALY-ARGENTINA-POLAND)
- VOLKSWAGEN (GERMANY-CHINA-MEXICO)
- TRW (UK)
- VOLVO (SWEDEN)
- MAGNETI MARELLI (ITALY-BRASIL-CHINA)
- IDIADA (SPAIN)
- MARUTI (INDIA)
- RENAULT (FRANCE)
- ALFA ROMEO (ITALY)
- DENSO (ITALY)
- MAGNA (AUSTRIA)
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- PORSCHE (GERMANY)
- NISSAN (UK)
- AUDI (GERMANY)
- BMW (GERMANY)
- DELPHI (GERMANY)
- KIA (SOUTH KOREA)
- IRAN KHODRO (IRAN)
- TOFAS (TURKEY)
- PSA (FRANCE)
- SEAT (SPAIN)
- MERCEDES (GERMANY)
- DALIAN DIESEL (CHINA)
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Main design problems in the automotive field:
- Time to market is a must for success of new car models
- Quality reliability safety and environment friendly components are key points for modern vehicles, the check of those items is necessary to ensure warm welcome into the market.
- In order to improve the efficiency of the project phase, improvements of testing devices are requested to perform tests combining several types of stress simulating the real vehicle working.
- The standardization of test methods is necessary to compare different test results, so strict cooperation between users and producers of test equipment helps to reach that goal through the experience of each side.
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Purpose of the test:
- Fluid dynamic efficiency of the vehicle
- Emission test
- HVAC efficiency performance test
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Test features:
- Temperature Range
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-40°C to +60°C |
- Standards to meet
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EURO 3 / 4 STD |
- Humidity range
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15 to 80% RH |
- Max dissipation at -10°C
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160 kW (car running) |
- Max wind simulation speed
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180 km/h |
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Cooling Systems
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Freon Direct Expansion
Key points:
- Quick achievement of the set point
- Low energy consumption
- Higher MTBF
Weak points:
- Defrosting after the test is required
- Slightly higher noise
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Indirect System
Key points:
- Defrosting is not required
- Good accuracy
Weak points:
- Continuous maintenance is required
- High consumption
- Low performance
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Compressors
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Piston Type
Key points:
- Chamber can work even if one of the compressors is out
- Reasonable noise
- Possibility to work in cascade configuration to increase the temperature rates of the chamber
Weak points:
- Continuous maintenance is required
- High consumption
- Remarkable footprint of the cooling plant
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Screw Type
Key points:
- Frequent maintenance is not required
- High energy efficiency
- High MTBF it means good reliability
Weak points:
- High noise
- No chance to work in case of failures
- Not useful for low powers
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Wind Simulator
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The wind simulator located in the front of the car allows simulating several running conditions of different car models just moving back and forward.
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Air Removal System by Mechanical Cooling
Key points:
- Frequent maintenance is not required
- High energy efficiency
- Not contaminated air into the chamber
Weak points:
- Continuous defrosting is required
- Remarkable footprint of the cooling plant
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Air Removal System by Chemical Dryer
Key points:
- Compact footprint
- Defrosting is not required
Weak points:
- Frequent maintenance is required
- High energy consumption
- Air contaminated by the chemical parts
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Charts, Layouts and Certifications
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