AVL Fuel Mass Flow Meter and Fuel Temperature Control

The AVL Fuel Mass Flow Meter and AVL Fuel Temperature Control combine high accuracy and excellent temperature stability even with short measurement times.


AVL Approach

The AVL Fuel Temperature Control and the AVL Fuel Mass Flow Meter with a pressure control system patented by AVL, provide constant, adjustable fuel pressures and temperatures. This allows for reliable and easy utilization for engines sizes up to 600kW with state-of-the-art mixture preparation systems.

Technical Data

AVL Fuel Mass Flow Meter and Fuel Temperature Control

Technical Details AVL Fuel Mass Flow Meter and Fuel Temperature Control
Type: AVL 735S/753C
Measurement principle: Mass flow
Measurement ranges:

0 … 125 kg/h
Measurement uncertainty: 

≤ 0.12% (acc. to DIN 1319) 
Interfaces / output signal: RS232, analog I/O, 0 … 10 V
digital I/O 
Measurement frequency: 20 Hz (analog)
Response time: < 125 ms
Fuel types: Standard*) and 100% bio fuels
Engine feed pressure: < 0 … 600 kPa
Fuel circulation quantities: Optionally 240/450/540 l/h
Control range: 10 … 80° C
Stability: Better than 0.02° C
Heating / cooling: 1.6 kW / 1.6 kW
Power supply: 230 V, 50 Hz, 220 V, 60 Hz
100 V, 50–60 Hz, 115 V,
60 Hz
Power consumption: 0.4 kW (without heating)
Ambient temperature: 5 … 50° C
Dimensions (W x H x D): 770 x 1,630 x 345 mm

 *) With max. 20% alcohol and up to 10% bio diesel

Measuring Principle

AVL Fuel Mass Flow Meter Measurement Principle
The fuel passes through a U-shaped tube, which vibrates at its natural frequency. This frequency is proportional to the fuel density, which, in addition to the mass flow, is a separate measurement variable and thus allows for the output of volumetric measurement values. The time lag of the vibration frequency C1 to C2 is proportional to the mass flow.