초록 ▼

Diesel fuel is stored in a first fuel tank, while water is stored in a second fuel tank. To use an emulsion fuel, diesel fuel and water are mixed and are caused to enter an injection pipe through a junction located between an injection pump and an injection nozzle. The emulsion fuel is injected thro

Diesel fuel is stored in a first fuel tank, while water is stored in a second fuel tank. To use an emulsion fuel, diesel fuel and water are mixed and are caused to enter an injection pipe through a junction located between an injection pump and an injection nozzle. The emulsion fuel is injected through the injection nozzle. The engine is also equipped with exhaust gas recirculation devices to return a portion of the exhaust gas of the engine to an intake pipe of the engine so that some of the exhaust gas is recirculated.

대표청구항 ▼

An emulsion fuel engine having at least one cylinder, comprising: a first fuel tank for storing a first fuel therein; a second fuel tank for storing a second fuel therein; an injection nozzle attached to the cylinder; an injection pump for drawing the first fuel from the first fuel tank and deliveri

An emulsion fuel engine having at least one cylinder, comprising: a first fuel tank for storing a first fuel therein; a second fuel tank for storing a second fuel therein; an injection nozzle attached to the cylinder; an injection pump for drawing the first fuel from the first fuel tank and delivering under pressure the first fuel at a predetermined timing toward the injection nozzle; means for mixing the first fuel from the first fuel tank and the second fuel from the second fuel tank, whereby an emulsion fuel is formed; means for feeding the emulsion fuel, which has been delivered from said mixing means to an injection pipe at a location between the injection pump and the injection nozzle; exhaust gas recirculation means for returning a portion of exhaust gas to an intake passage to recirculate the exhaust gas; and exhaust gas recirculation control means for controlling the amount of the exhaust gas to be recirculated by said exhaust gas recirculation means; wherein said exhaust gas recirculation means comprises an EGR valve interposed in an exhaust gas recirculation passage extending between an exhaust passage and the intake passage for adjusting the amount of the exhaust gas to be recirculated through the exhaust gas recirculation passage; whereby, when the engine load is high, the opening of the EGR valve is decreased and the proportion of the second fuel is increased; and when the engine load is low, the opening of the EGR valve is increased and the proportion of the second fuel is decreased.