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AVL Fuel Mass Flow Meter: Precision Sourcing for Automotive Engine Testing
Quick Answer: Silver Automation Instruments supplies Coriolis fuel mass flow meters for AVL style automotive engine test cells. These meters handle diesel, gasoline, ethanol blends, and methanol with mass flow accuracy of 0.1 percent of rate. Send us your fuel type, flow range in kg/h, pressure in bar, temperature in °C, and pipe size in DN for a specific quote.
Automotive engine testing depends on repeatable fuel flow data. AVL test benches commonly use Coriolis mass flow meters because they measure mass directly. This removes the need for density compensation when fuel temperature changes. Silver Instruments offers the SIL-CMF series as a precision sourcing route for engine test laboratories and service providers.
Many test cell engineers look for a second source after an AVL fuel mass flow meter fails or after a new test program extends the flow range. We have seen this on customer sites many times. A spare meter may have a long lead time. The SIL-CMF series often ships faster and is sized from standard industrial components.
Fuel Flow Requirements in Engine Testing
A passenger car engine test bench may need a flow range from 0.2 kg/h to 150 kg/h. A heavy duty diesel bench may need 5 kg/h to 500 kg/h. Fuel supply pressure often sits between 1 bar and 10 bar. Temperature at the meter is usually 15 °C to 40 °C for gasoline and 20 °C to 50 °C for diesel.
Because a Coriolis meter measures mass directly, it ignores density changes. That helps when fuel blends vary between test programs. Diesel viscosity is around 2 cP to 5 cP at 20 °C. Gasoline viscosity is below 1 cP. A Coriolis meter handles both because it reads mass flow directly. It does not need a separate viscosity correction for most test fuels.
So the net fuel consumption calculation often uses two meters. One meter sits on the supply line. One meter sits on the return line. The automation system subtracts return flow from supply flow. Both meters need matched low flow performance.
Model Selection for AVL Style Fuel Loops
We recommend three sizes from the SIL-CMF series for most engine test benches. The SIL-CMF010 fits low flow gasoline and diesel loops from 0.2 kg/h to 30 kg/h. The SIL-CMF015 covers 1 kg/h to 150 kg/h and works well for passenger car and light commercial engine tests. The SIL-CMF025 covers 5 kg/h to 500 kg/h for heavy duty and performance engine programs.
All three models have 316L stainless steel wetted parts and standard FKM seals. For ethanol blends above E10 or for methanol, tell us the exact fuel blend. We can change the seal material to FFKM or another suitable grade. The standard pressure rating is 16 bar at 20 °C. The standard process temperature range is -50 °C to 150 °C.
Here is the thing. Fuel return flow is not steady. Some common rail engines return a large share of supply flow at idle. Your meter needs a wide turndown. We size the meter around the minimum flow you need to measure, not just the maximum flow.
Last year a diesel engine test bench in Thailand needed a spare fuel meter for a common rail test program. The required range was 0.2 kg/h to 60 kg/h. We supplied a SIL-CMF010 with PT100 and 4-20 mA HART. Delivery took seven days.
Installation Notes Most Engineers Skip
Most engineers skip this part du
Zero the meter after installation and after the fuel temperature stabilizes. A zero check under actual test cell conditions removes offset at low flow. This is more important below 2 kg/h because zero instability affects small flow readings.
Outputs and Test Cell Integration
The SIL-CMF series provides 4-20 mA HART as standard. Pulse output is available for total flow. Modbus RTU is an option. Many AVL automation systems accept 4-20 mA signals for fuel flow. Check your analog input wiring before ordering because some test cells use 0-10 V or frequency input.
Our meter can output mass flow, density, and temperature at the same time. The PT100 temperature signal is useful for fuel condition monitoring. You do not need a separate temperature transmitter in the fuel line.
Accuracy and Calibration
Standard accuracy for the SIL-CMF fuel meter is 0.1 percent of rate for liquid mass flow. Repeatability is around 0.05 percent. For flow below 2 kg/h, zero stability plays a larger role. In practice, a well installed DN10 meter can measure 0.2 kg/h diesel with repeatable results.
A calibration report is available on request. We calibrate with a traceable mass flow reference at the factory. If your test cell standard requires ISO/IEC 17025 calibration, ask us before ordering.
FAQ: AVL Fuel Mass Flow Meter Sourcing
Do you sell original AVL fuel mass flow meters?
No. We supply Silver Instruments SIL-CMF Coriolis mass flow meters that fit many AVL style fuel measurement loops. If you need a genuine AVL spare part, contact AVL directly. If you need a faster second source, we can help.
What accuracy can I expect for engine fuel measurement?
Standard accuracy is 0.1 percent of rate for liquid mass flow. Repeatability is about 0.05 percent. At flow rates below 2 kg/h, installation quality and zero calibration matter more than the meter specification.
Can the meter handle diesel, gasoline, and ethanol blends?
Yes. Wetted parts are 316L stainless steel. Standard seals are FKM. For ethanol blends above E10 or for methanol, tell us the blend ratio. We will select a compatible seal material.
What output signals are available?
Standard output is 4-20 mA HART. Pulse output and Modbus RTU are available. The meter can send mass flow, density, and temperature signals. We configure outputs before shipping.
What size should I select for an automotive engine test cell?
DN10 to DN25 covers most test benches. A DN10 meter works for 0.2 kg/h to 30 kg/h. A DN15 meter works for 1 kg/h to 150 kg/h. A DN25 meter works for 5 kg/h to 500 kg/h. Send us your minimum and maximum fuel flow, and we will size the meter.
Get a Quote for Your Fuel Mass Flow Meter
Tell us your fuel type, flow range in kg/h, pressure in bar, temperature in °C, and pipe size in DN. We will recommend a SIL-CMF model and send a quotation within 24 hours.
Tel: +86-135-1213-1526
WhatsApp: 86-135-12131526
WeChat: +86 13512131526
Website: https://flow-meter.com.au