Development effort is growing dramatically due to increasingly complex powertrain technologies and stricter legislation with new and longer test cycles. The latest Worldwide Harmonized Light Vehicles Test Cycles (WLTC), for example, are 30 % longer than their New European Driving Cycle (NEDC) forebears.
Driven by RDE legislation, there is also a trend to pull road tests ahead in the development process or to reproduce RDE tests on testbeds to increase efficiency even further. This means the already crowded test infrastructure must host even more equipment. Both time and space are becoming restraining factors.
To address various testing needs, we offer a broad spectrum of extensions:
- The AMA SL is configurable as a dual-stream version to allow simultaneous bag and modal analysis.
- For low emission applications there is a dedicated AMA SL with ultra-low range analyzers for NOx, N2O and CO measurements.
- An extended CVS valve matrix allows the analysis of additional pollutants like formaldehyde or ethanol with a SESAM i60 FT D1 system.
- The CVS SL Heat Exchanger is available as an alternative to the default flow compensation function.
- In case of height limitations of the test cell where mounting of the dilution tunnel above the systems is not possible, a split cabinet version of the PSS SL allows for a flexible installation.
- The split cabinet approach can also be used to retrofit particulate sampling systems, for example into small engine testbeds equipped with a SORE or MC AMA i60 Combi system or for test cell sharing.
| Technical Data | |
|
Voltage supply |
100-240 V AC, 50/60 Hz |
| Internal voltage | 24 V / 48 V DC |
| AMA configuration | Up to 2 streams |
| CVS configuration | Up to 16 bags |
| CVS variants | Low Emission (LE) or with stainless steel tubing |
| PSS configuration | Single or double dilution |
AVL AMA SL™
The AVL AMA SL™ measures THC, CH4, NO, NOx, CO2, CO and N2O and offers TWIN analyzers for simultaneous measurements. A low sample gas flow enables smaller bag volumes. Special analyzer variants are available for measuring ultra-low concentrations. Bag analysis can be done in parallel to modal measurements.
AVL CVS SL™
The AVL CVS SL™ features extended CVS flow rates (up to 40 m³/min) for the testing of heavier vehicles or high-performance engines. It enables faster and parallel analysis cycles due to smaller bags. The venturi switching time is improved by fast acting pinch valves. In- and outlets of the CVS can be located flexibly.
AVL PSS SL™
Condensation is avoided by heating the particle filter holders. Energy is saved by recovering waste heat from the vacuum pump. The AVL PSS SL™ features a rotary valve for filter selection with an integrated shut-off function and offers proportional particulate sampling. The position of the dilution tunnel is flexible thanks to an alternative setup with a separate heated filter box.
Solution Sheet_SL Dilution Systems_03.23
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