Alternative Fuels

Fuel metering for parking and auxiliary heater

When it comes to the fuel supply for parking and auxiliary heaters, in particular, it is essential that fuel is delivered with high precision, as required, and with maximum reliability even at low temperatures. It is within this field of application that Thomas pump systems provide unique benefits thanks to their versatile use in passenger and commercial vehicles. Whether gasoline and diesel or alternative fuels such as e-fuels or biofuels, Thomas pump systems deliver and control substances with supreme reliability and in line with demand.

They combine several functions in a dedicated system and, thanks to the principle of a magnetically driven reciprocating piston established at Thomas, guarantee consistently high levels of metering quality over the entire service life. In addition to precise metering, the self-priming systems include a shut-off function that prevents unwanted fuel flow, thus making them suitable for use in safety-critical applications.


Product information


Highly integrated functionality: Self-priming, conveying, dosing and safe shut-off in one compact unit

Robust and reliable over lifetime whether for passenger car or commercial vehicle applications


Supply Voltage
12 V / 24 V


Stroke volume  
22 – 67 mm3

Flow rate
Up to 5 l/h

< 1%

Pressure range
Up to 5 bar

Temperature range
-46 – 90 °C

  • Simple controllability
  • Robust against environmental influences
  • High accuracy and precision
  • Low power consumption
  • Low number of interfaces
  • Very silent