Fuel consumption measurements
Automobile engine testing

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Fuel consumption measurements


Automobile engine testing

Author : Daniel DRECQ

Publication date: October 10, 2007

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5. Fuel consumption measurements

This paragraph presents the different technologies used to measure engine fuel consumption, whether the engine is installed on a test bench or in a vehicle. The three main methods used are:

  • volumetric measurement;

  • mass measurement;

  • Overall or instantaneous flow measurement.

Volumetric measurement is historically the oldest.

Measuring the fuel consumption of a combustion engine is one of the fundamental parameters required for the development of combustion engines. The measurement principle is based on flow measurement but requires a high degree of measurement accuracy, in the order of 10 –r 4 , in order to perform accurate efficiency calculations.

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