Patent ID: 7444986
Filing Date: 2008-11-04
Classification: F02B,F02D,F02M,Y02T

Abstract:
1. A dual-fuel engine, the engine being supplied with diesel fuel and at least one secondary fuel, the engine comprising: one or more cylinders in which one or more pistons, reciprocate; diesel injection means provided to each of the one or more cylinders for injecting the diesel fuel into the cylinder during an appropriate stroke of the piston; at least one air inlet valve provided to each of the one or more cylinders, the at least one valve moving to an open condition during the appropriate stroke of the piston to permit air flow therethrough; secondary fuel injection means provided to each of the one or more cylinders for injecting the secondary fuel into the cylinders, the secondary fuel injection means being independent of the diesel fuel injection means and air inlet valves; an electronic control unit (ECU) including micro-processing means for dynamically controlling one or more engine operating characteristics; and vaporizing means for reducing liquid secondary fuel to gas upstream of the secondary fuel injection means to allow delivery of the secondary fuel in gaseous form to the secondary fuel injection means, wherein the vaporizing means is under the control of the ECU to allow dynamic control of delivery of the gaseous secondary fuel to the secondary fuel injection means.