AVL FuelExact PLUThe new measurement system for transient fuel consumption optimization and broadened application range. Stricter laws and regulations with regard to C02 and fuel consumption reduction increase the pressure to develop engines even faster, with strongly increasing measuring efforts at the same time. The development engineers of diesel and gasoline engines are increasingly forced to conduct measurements in automatic operation with ever shorter measuring times or in transient measurements. Engines for alternative fuels increase the complexity in the application, and additionally require from fuel consumption measurement systems the compatibility for biodiesel or alcohol admixtures of up to 100 %.
Through proven reliability, extremely high measurement accuracy, an incomparably broad range of application as well as the competence and experience of the world market leader, AVL provides a decisive contribution towards fulfilling the set demands with the new AVL FuelExact.
Proven Measuring Principle and High Measuring Accuracy of the Entire Measuring SystemThe measuring system utilizes the advantages of unique and proven PLU sensors (servo-controlled displacement meters) coupled with a highly precise fuel temperature control which ensures high measuring accuracies of the entire system at the engine test bed with an extraordinary temperature stability of 0.02°C even at low flow rates. This is why FuelExact is ideal for short measuring times as well as for engine calibration where the accurate measurement of small flow rates is crucial. The system can also be optimized for the respective flow ranges through the utilization of various sensor sizes (measuring range).
Application in Engine CalibrationTransient measuring methods are increasingly being utilized with engine calibration (for instance, with the AVL CAMEO™) in order to still be able to deal with the vast number of measuring points in a reasonable time frame. AVL FuelExact provides continually precise momentary values, and thus enables a reduction of the overall testing times, for instance in the measurement of the engine’s air filling.
Application from Small One-Cylinder Engine to 2000 kW Large EngineA wide range of PLU sensors as well as the modular setup of the AVL FuelExact makes it possible at any time to carry out flexible adaptation to fuel injection systems through various pump delivery rates or through utilization of suitable pressure control modules.
Application with Alternative FuelsThe AVL fuel consumption measuring system for utilization for alternative fuels, meanwhile known by the name FlexFuel, is increasingly developing into a standard. AVL FuelExact FlexFuel is also suitable for commercial gasoline and diesel fuels as well as for alcohol admixtures of 100 % methanol or ethanol as well as up to 100 % biodiesel.
RSI InterfaceThe new, user-friendly, standardized AVL interface technology RSI (Remote Service Interface) allows simple integration via Ethernet into the test bed automation system or test bed network or the AVL remote control unit InScreen is possible via utilization of WEB technology. Access to the measuring system can be utilized for various user groups even from workplaces far from the test bed, e.g. remote maintenance. This feature leads to a significant reduction of training and installation efforts.
AVL Master UnitWith the new AVL Master Unit, which for the purpose of comparable measurement is connected as a reference device instead of the engine, a check of the entire installation is possible. Faulty measurements can be prevented as a result, which is ultimately expressed in a shortening of development times.
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- Ideal for use in transient fuel consumption optimization
- Enhanced data security through extremely high temperature control accuracy
- Meets the requirements of large flow rates: high heating power, high refrigerating power, temperature stability, variable pump-circulating capacities
- Application for alternative fuels for compliance with current and future legislation
- Web interface with possibility for remote service and for fast integration into the automation system
- Optimal total cost of ownership through worldwide comparable measuring results, lower spare part costs through AVL eSpares™, etc.
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Application range: (Alternative sensor types 20, 75, 150, 300 or 500 l/h) |
0.03 … 500 l/h
0.025… 410 kg/h (with density 820 kg/m³)
| | | Uncertainty of density measurement: | | Measurement uncertainty (reproducibility) in mass calibration according to DIN1319: | | Step response according to ISO 16183: | | Max. measuring frequency: | | Fuel temperature control range: | | Stability of fuel temperature: | | Delivery rate of fuel system pump: | 260 l/h (50 Hz), option: variable between 145...410 l/h (for sensors 20, 75, 150 l/h) or
525 l/h (50 Hz), option: variable between 295...840 l/h (for sensors 300 and 500 l/h) | | | | 6 kW with a cooling water spread of typ. 10°C | Cooling water input pressure: | min. 200 kPa, max. 500 kPa | Cooling water pressure difference: | | Cooling water temperature: | | | | | Gasoline fuels according to EN 228, diesel fuels according to EN 590 with admixtures of max. 20% alcoholic constituents (methanol, ethanol) or 6% biodiesel according to EN 14214, in FlexFuel model up to 100% alcohols (methanol, ethanol) and biodiesel | Engine fuel feed pressure: | With bypass: 20…200 kPa, with optional pressure control: max. 1 MPa | Engine fuel return pressure: | With bypass: 20…200 kPa, with optional pressure control: ~0 … 50 kPa | | | Recommended fuel supply pressure: | | | | | 1 x Ethernet (WEB-based)
2 x RS232C (AK protocol)
Analogue inputs/outputs
Digital inputs/outputs | | 3 phases: 400 V AC +/-10% PE, 50/60 Hz, further voltages
optionally available | Power consumption of basic device: | | Power consumption of device with heating: | | | | | |
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