The AVL VT/VV-SHED (Sealed Housing for Evaporative Determination) systems constitute a state-of-the-art test system for testing evaporative emissions.


Increasingly stringent requirements demand adequate and flexible test systems for evaporative emissions that are suitable for certification as well as for tests in research and development.
Our AVL VT/VV-SHED Systems constitute a state-of-the-art test system with specifically coordinated optimization with regard to the individual analysis tasks. The focus was placed in particular on the selection of materials, test automation and gas analysis.

AVL SHED systems cover a wide range of applications and uses for R&D testing or for certification purposes. In addition to onboard refueling vapor recovery (ORVR) vehicle testing and running loss testing, tests for the vehicle interior such as volatile organic compound (VOC) or vehicle interior air quality (VIAQ) measurement can also be performed.
The available variants allow the system to be optimally matched to the desired unit under test - from individual components to complete vehicle testing.
Component manufacturers as well as OEMs, and international regulatory bodies use AVL SHED for the various evaporative emissions tests.

SHED System

Variants for Each Application

AVL SHED systems are available in various configurations and sizes to ensure optimal adaption to the respective UUT. From the testing of individual components, tank systems, motorcycles, or passender cars up until the testinf of transporters and small trucks, the suitable SHED system is available in our portfolio. Thus, they cover a wide range of applications and test scenarios.


Property Unit

SHED Micro

< 5 m³ – for individual component testing
SHED Mini < 10 m³ – for individual components or complete tank systems
SHED Midi < 20 m³ – for motorcycles and ATVs
SHED Fullsize < 60 m³ – for passenger cars / light-duty vehicles
SHED Maxi < 80 m³ – for large passenger cars and SUVs
SHED Magnum < 100 m³ – for transporters and small trucks


SHED System

Reduced Total Cost of Ownership (TCO)

Our Global Customer Service, eSpares and Remote Interfaces support an optimized TCO.

Efficient Test Operation

Improved flexibility, quality and reproducibility of test results accelerate your development processes

Adaptation to environmental conditions

A bag to balance the internal volume allows the operation of an enclosure at different temperatures.

Intuitive Operation

The optimized user interface enables intuitive and simple operation of the system an increases serviceability.

Compliance with Current Legislations

Our portfolio complies with current legislations such as EPA, CARB, ECE and further regulations, making it suitable for use in certification tests.

Unmanned Operation

With their fully automatic data acquisition system, our SHED systems are designed to allow 24/7 unmanned and continuous operation.


AVL FUELLOAD is designed specifically for fuel conditioning and refueling procedures of vehicles or tank systems in the context of ORVR test procedures.


AVL CANLOAD is designed for the automated execution of conditioning and aging cycles of canisters containing activated carbon from the automotive sector.

AVL iGeneration SII Systems

The AVL iGENERATION Series II clears the way for intelligent and intuitive R&D and certification emission testing according to the latest worldwide emission regulations.

SHED System
Evaporative Emission Testing

Learn more about our holistic product portfolio for evaporative emission testing of vehicles and components.

GL_ITS_Images_Key Visual Emission_square
A Guide to Vehicle Emissions and Energy Testing

In this webinar, Kurt Engeljehringer shares details of AVL’s free Emission and Energy Testing Handbook, which aims to help engineers understand and navigate this complex topic.

Evaporative Emissions – Verdunstungsemissions­messungen an Fahrzeugen

In diesem Webinar erfahren Sie alles, was Sie über Verdunstungsemissionsprüfungen im Hinblick auf Hybridisierung/Elektrifizierung und Euro 7 wissen müssen.

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