Diesel fuel combustion system
AssigneeUbe Industries, Ltd.
InventorsTadashi Murayama, Masayoshi Yamashita, Hideya Yoshitake
Life of this patent
Estimating the term…
Abstract
Smoke and nitrogen oxide in exhaust gases of diesel engines are reduced by burning a diesel fuel composition having a major portion of diesel fuel and 0.1 to 40 vol. % of a carbonic acid diester of the formula: in which R represents a lower hydrocarbon group having 1 to 6 carbon atoms, in a diesel engine by injecting the diesel fuel composition into a crank case at an injection timing of 17 to 2° CA, preferably, 14 to 8° CA, in terms of BTDC. EGR (exhaust gas recirculation system) is advantageously employable.
Claims6
A process for burning a diesel fuel composition which comprises burning a diesel fuel composition a major portion of diesel fuel and 0.1 to 40 vol. % of dimethyl carbonate
- in a diesel engine by injecting the diesel fuel composition into its combustion room at an injection timing of 14 to 2° crank angle before top dead center CA BTDC.
A process for burning a diesel fuel composition which comprises burning a diesel fuel composition a major portion of diesel fuel and 0.1 to 40 vol. % of dimethyl carbonate.
- in a diesel engine by injecting the diesel fuel composition into its combustion room at an injection timing of 14 to 2° crank angle before top dead center CA BTDC;
- and
- returning a portion of its exhaust gas produced by the above burning into the combustion room to burn the returned exhaust gas together with a freshly injected diesel fuel composition.
Dependencies are inferred from the claim text.