Title :
Ethanol content estimation in a flex-fuel motercycle using engine speed measurements
Author :
Jensrakoo, R. ; Wongsa, S. ; Koolpiruck, D. ; Laoonual, Y.
Author_Institution :
Dept. of Control Syst. & Instrum. Eng., King Mongkut´s Univ. of Technol. Thonburi, Bangkok, Thailand
Abstract :
The performance of engine management system of flexible fuel vehicles relies on the estimation of the ethanol content in the fuel blend. Many previously proposed estimation approaches involve additional redundant sensors which increase production costs. In this research work, we proposed a simple ethanol estimation technique which uses only the measurement of engine-speed at a fixed starting condition. The engine speed response was modelled as a first-order system. It was found that the steady-state characteristics of the model were able to capture the effect of changing fuel composition. By applying a nearest-mean classifier-based scheme, we could select the best feature from the model. Five different blends, including E10, E20, E50, E85, and E100, were used to formulate the model and experimentally validated the proposed technique.
Keywords :
biofuel; engines; motorcycles; E10 blend; E100 blend; E20 blend; E50 blend; E85 blend; engine management system; engine speed measurement; engine speed response; ethanol content estimation; first-order system model; fixed starting condition; flex-fuel motercycle; flexible fuel vehicles; fuel composition; nearest-mean classifier-based scheme; redundant sensors; Engines; Estimation; Ethanol; Fuels; Polynomials; Sensors; Steady-state; engine speed; ethanol content estimation; flex-fuel vehicles; spark ignition engines;
Conference_Titel :
Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2014 11th International Conference on
Conference_Location :
Nakhon Ratchasima
DOI :
10.1109/ECTICon.2014.6839806