Recent emissions legislation has tightened the requirements for transient test procedures. To pass future emissions limits, it will also be necessary to monitor the engine’s particulate emissions during transient operation, even in the early stages of an engine R & D process. Therefore, an instrument with a very fast response time combined with a high accuracy is required.
Measurements in front of an engine aftertreatment system, where high exhaust pressures and temperatures are present, must also be possible, e.g. upstream of a diesel particulate filter (DPF).
This innovative tool measures the loss of light intensity between a light source and a receiver and makes it easy to calculate the opacity N [%] and the light absorption coefficient k [m-1]. In addition to its super-fast response time of 0.1 seconds, the AVL Opacimeter can also make measurements upstream and downstream of the DPF. This makes it a valuable tool in your testing environment.
| Technical Data | |
|
Measurement principle |
Light extinction |
| Measurement value output | Opacity N [%], Light absorption coefficient k [m-1] |
| Measurement range | N = 0 to 100 %, k = 0 to 10 m-1 |
| Measurement value resolution |
0.01 % or 0.001 m-1 |
Compliance with Technical Requirements and Regulations
Our opacimeter complies with all legal requirements for emission certification testing. It meets standards including:
- ECE R24
- 72/306/EEC, 77/537/EEC
- ELR test cycle for
- Euro III according 1999/96/EC
- Euro IV and Euro V according 2005/55/EC and 2005/78/EC
- GB 3847-2018
- ISO 8178-9
- ISO 11614
- SAE J 1667
High Pressure Option
The growing trend towards developing engines with different exhaust aftertreatment systems requires special application components for particle measurement instruments. AVL Opacimeters include a high-pressure option, which extends the scope of application, enabling opacity measurements to be made using standard equipment with exhaust gas pressure peaks up to 3,000 mbar (relative to ambient pressure) and exhaust gas temperatures up to 800 °C.
Solution Sheet AVL Opacimeter
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