PURPOSE: The present invention provides an internal-combustion engine which supplies power by subjecting a fuel oil to combustion and makes it possible to reduce amounts of exhaust gases such as NOX and THC. CONSTITUTION: An internal-combustion engine, cha...

Even when only fuel oil is injected into a cylinder liner, decrease in fuel injection pressure, deterioration in combustibility, and degradation in performance of an internal combustion engine are prevented, while increase in dust and black smoke is also p...