TY - JOUR
TI - Energy efficiency improvement by gear shifting optimization
AU - Blagojević Ivan A
AU - Vorotović Goran S
AU - Ivanović Gradimir S
AU - Janković Slobodan S
AU - Popović Vladimir M
JN - Thermal Science
PY - 2013
VL - 17
IS - 1
SP - 91
EP - 105
PT - Article
AB - Many studies have proved that elements of driver’s behavior related to gear  selection have considerable influence on the fuel consumption. Optimal gear  shifting is a complex task, especially for inexperienced drivers. This paper  presents an implemented idea for gear shifting optimization with the aim of  fuel consumption minimization with more efficient engine working regimes.  Optimized gear shifting enables the best possible relation between vehicle  motion regimes and engine working regimes. New theoretical-experimental  approach has been developed using On-Board Diagnostic technology which so far  has not been used for this purpose. The matrix of driving modes according to  which tests were performed is obtained and special data acquisition system  and analysis process have been developed. Functional relations between  experimental test modes and adequate engine working parameters have been  obtained and all necessary operations have been conducted to enable their use  as inputs for the designed algorithm. The created Model has been tested in  real exploitation conditions on passenger car with Otto fuel injection engine  and On-Board Diagnostic connection without any changes on it. The conducted  tests have shown that the presented Model has significantly positive effects  on fuel consumption which is an important ecological aspect. Further  development and testing of the Model allows implementation in wide range of  motor vehicles with various types of internal combustion engines.