RT Journal Article
SR Electronic
A1 Čupera, Jiří
A1 Havlíček, Miroslav
T1 Alternative methods of fuel consumption metering based on the on-board diagnostics outputs
JF Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis
YR 2014
VO 53
IS 4
SP 23
OP 32
DO 10.11118/actaun200553040023
UL https://acta.mendelu.cz/artkey/acu-200504-0003.php
AB The article describes alternative methods of fuel consumption measurement based on model with using the diagnostic outputs of engine control unit. On-board diagnosis (the second level, known as OBD-2) has been mandated by government regulation because of advanced damage control systems in newer cars. However, its signals can be used for accurate analyses of power or torque measurement. On-board diagnostics offers many various parameters such a spark advance, intake air temperature, coolant temperature, throttle position, air flow mass and so on. Many of them have been unavailable without using sophisticated and expensive instrumentation. In the article are described two ways of fuel consumption measuring which are based on intake air consumption and knowledge about air-fuel ratio. First of them is founded on voltage output of oxygen sensor, the second on short (long) term fuel trim. As is shown at the end the second way gives more accurately results.