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2 Silniki Spalinowe

2 2007

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Engine fuelled with propane-butane and equipped with NOx storing catalytic converter - efficiency and emission of exhaust gas toxic components

Golec K., Mareczek M., Papuga T.

Silniki Spalinowe

2007

R. 46, nr SC3

251-254

The results of investigations of SI engine fed by means of injection of liquid propane-butane and equipped with storing catalytic converter have been presented in article. Engine was fed with lean mixture of fuel and air, what enabled obtaining the good value of engine overall efficiency. Applying of the storing catalytic converter and an adequate sequence of values of air excess number provided the advantageous ecological properties of the investigated engine.

Effect of composition of propane-butane mixture on regulation parametersof SI engine fuel supply system

Dutczak J., Papuga T.

Silniki Spalinowe

2007

R. 46, nr SC2

44-49

In the engine fed by means of liquid propane-butane injection, the fuel composition has the substantial influence on the injectors opening time required to realization of the correspondent value of air excess number. In the certain states of engine load the mixture composition might not be corrected properly by lambda sond signal or the necessary correction would have to overstep the possibilities of feeding system. The feeding system controller should be fitted with procedures enabling the correction of calculated injector opening time, according to propane and butane shares in the fuel. Change of the air excess coefficient as the result of a change of fuel composition effects also in exhaust gas toxic components emission level. The results of investigations of SI engine fuelled with liquid propane-butane injection have been presented in article. The influence of composition of P-B mixture on the injection system parameters and exhaust gas toxic components concentration has been defined.