FQ Series

Fuel Flow Measurement Systems

Measuring a vehicle’s fuel flow requires a precise system which can run stationary and transient tests. It must also be able to offer high reproducibility and run cycle measurements under real operational conditions, including WLTP. Our FQ Series of fuel flow measurement systems offers a highly precise method of measuring various fuel types, and covers the full range from small engines (incl. single-cylinder research engines) up to heavy-duty engines with up to 5000 kW.

With the choice of two different measurement principles – the positive displacement principle and the Coriolis measurement principle – the systems are suited for a wide range of applications. These applications include durability, mapping, and performance testing as well as climatic and emissions tests.

Measurement Principles

The delta pressure principle enables highly accurate measurements, even at very low consumption rates and is particularly suitable for highly dynamic measurements. This makes the DP systems ideal for demanding research and development applications. The Coriolis measurement technology allows for the continuous and precise measurement of the fuel flow by directly measuring the mass flow. It is ideally suited for all kind of dynamic and static measurements applications.

Measurement of various fuel types: diesel, gasoline, ethanol, E-fuels (FQ-3xxx series)
Measuring range from 0.2 l/h to 400 l/h (300 kg/h)
Temperature control range from -30°C to 80°C
Data communication with up to 100 Hz
Continuous evaluation of statistical characteristics

Key Benefits

Flexible

Choice of measurement principle (depending on testing application)
Measurement of various fuel types such as e-fuels, diesel, gasoline
Standard interfaces for easy automation integration
Wide range of optional modules

Efficient

Automated ventilation and purge function
Automated fuel exchange
Optional integrated plausibility check module

Precise

High precision, even at low consumption levels
High measurement repeatability

Fuel Flow Measurement Systems for Light-duty Engines

Model	FQ-1200CR	FQ-3100DP	FQ-3200CR
Measuring Range [kg/h]	150	225	250
Engines up to [kw]	300	400	400
Fuel circulation range [l/h]	360	up to 450	up to 450
Fuel temperature range [°C]	-60	-30°C to 80	-30°C to 80
Fuel temperature stability [°C]	±0.1	±0.05	±0.05
Dynamic [Hz]	up to 10	Up to 100	Up to 100

Fuel Flow Measurement Systems for Heavy-duty Engines

Model	FQ-3110DP	FQ-3210CR	FQ-4000HD
Measuring Range [kg/h]	300	250	1 000
Engines up to [kw]	1 500	1 500	5 000
Fuel circulation range [l/h]	Up to 960	Up to 960	Up to 4 000
Fuel temperature range [°C]	-30°C to 80	-30°C to 80	15 to 80
Fuel temperature stability [°C]	±0.05	±0.05	±1
Dynamic [Hz]	Up to 100	Up to 20	Up to 100