Fuel System Data (FSD)

Know how fuel is stored, supplied and consumed

Fuel efficiency starts with understanding more than just how much fuel a vehicle consumes.

The Squarell Fuel System Data Parameter Group combines fuel consumption, tank information and fuel delivery system data into one harmonised message. It provides insight into both the amount of energy being used and the condition under which fuel is supplied to the engine.

This helps fleet applications monitor fuel efficiency, detect abnormal conditions and compare fuel performance across different vehicle makes and models.

Close-up of a large aluminum fuel tank mounted on the chassis of a heavy-duty truck, secured with two black mounting straps.

Specifications

Name: Fuel System Data
Header: $FSD1
Subscription: Yes
Solution: Vehicle Performance
Trigger: Configurable
Output port: Selectable

Typical Applications

The Fuel System Data Parameter Group supports applications such as:

  • Fuel consumption monitoring
  • Fuel efficiency analysis
  • Fuel system condition monitoring
  • Range and refuelling applications
  • Fuel cost analysis
  • Driver efficiency applications
  • Vehicle performance dashboards
  • Remote diagnostics
  • Sustainability and CO₂ reporting

Key Parameters

Fuel Consumption

Monitor how much fuel the vehicle actually uses.

Typical parameters include:

  • Fuel Rate
  • Total Fuel Used
  • Trip Fuel Used
  • Idle Fuel Used
  • Average Fuel Consumption
  • Instantaneous Fuel Consumption

Where sufficient source data is available, Squarell can combine these values with other Parameter Groups to analyse fuel consumption in relation to distance, engine operation and driver behaviour.

Fuel Tank

Monitor available fuel and refuelling information.

Typical parameters include:

  • Fuel Tank Level
  • Fuel Tank Level 2
  • Fuel Temperature
  • Fuel Tank Capacity
  • Fuel Used Since Refuelling
  • Refuelling Event

Fuel Delivery System

Monitor the conditions under which fuel is supplied to the engine.

Typical parameters include:

  • Engine Fuel Delivery Pressure
  • Fuel Injector Metering Rail Pressure
  • Commanded Fuel Rail Pressure
  • Commanded Fuel Injection Control Pressure
  • Water in Fuel Indicator

These parameters can provide valuable information for remote diagnostics and help identify abnormalities in the fuel delivery system before they result in performance problems.

Fuel & AdBlue Efficiency

Fuel and AdBlue consumption are closely related to vehicle operation and exhaust aftertreatment.

Where the required information is available, the Parameter Group can provide:

  • AdBlue Level
  • AdBlue Consumption
  • Total AdBlue Used
  • Fuel-to-AdBlue Consumption Ratio
  • Abnormal Fuel-to-AdBlue Ratio

Monitoring the relationship between fuel and AdBlue consumption can help identify unusual operating conditions or changes in aftertreatment performance.

Fuel Type

Where supported by the vehicle, information about the configured or reported fuel type can be made available.

Examples may include:

  • Diesel
  • Biodiesel blend
  • HVO / renewable diesel
  • Alternative fuel type
  • Fuel type identification

Availability depends on the information provided by the vehicle manufacturer.

The complete Parameter Group and parameter definitions are available to Squarell partners.

Yellow and black construction warning banner displaying the text "Under Construction" with diagonal hazard stripes.

Visualisation

Fuel information can be presented in dashboards showing consumption, tank level, fuel rate and fuel system conditions over time.

Combining Fuel System Data with Driver Performance and Engine Data makes it possible to analyse why fuel consumption changes instead of simply reporting how much fuel was consumed.

Line chart showing cumulative fuel used from 08:30 to approximately 14:30, increasing gradually from about 177,456 to 177,506, with several short periods of no change.

Business Value

The Fuel System Data Parameter Group helps fleet operators to:

  • reduce fuel consumption
  • identify inefficient vehicle operation
  • monitor fuel system performance
  • detect abnormal fuel conditions
  • improve refuelling planning
  • compare fuel efficiency across mixed fleets
  • support driver efficiency programmes
  • reduce operating costs
  • support CO₂ and sustainability reporting

Why Squarell?

Fuel information differs considerably between vehicle manufacturers. Even apparently simple values such as fuel level, fuel rate and total fuel used may originate from different networks, messages and calculation methods.

Squarell interprets this manufacturer-specific information inside the IVMS and converts it into one consistent Fuel System Data Parameter Group.

This allows fleet applications to work with harmonised fuel information instead of manufacturer-specific CAN data.

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Ready to turn your data into results?

Discover how Squarell helps you reduce downtime, improve maintenance decisions, and create measurable impact from deep vehicle data.

Ready to turn your data into results?

Discover how Squarell helps you reduce downtime, improve maintenance decisions, and create measurable impact from deep vehicle data.