Patent ID: 6301888
Filing Date: 2001-10-16
Classification: B01D,F01N,F02B,F02D,F02M,Y02T

Abstract:
A diesel-cycle engine comprising:a plurality of cylinders, each cylinder providing a combustion chamber;fuel feed means for feeding successive fuel charges to each of said combustion chambers;an air intake line and an intake manifold for receiving intake air through said air intake line and for distributing the received intake air to the cylinders for combustion of the fuel charges therein with generation of exhaust gas;an exhaust gas manifold for collecting exhaust gas from the cylinders and for discharging the collected exhaust gas to ambient atmosphere through an exhaust line;an exhaust component sensor for sensing concentration of at least one exhaust component in the exhaust gas;an engine controller for generating control signals in accordance with the sensed concentration;an exhaust gas recirculation line for recirculating a portion of the collected exhaust gas to the combustion chambers;an exhaust gas cooler, located in said exhaust gas recirculation line, for cooling the recirculated portion of the exhaust gas and for separating a condensate and particulate matter therefrom;a return line connecting said exhaust gas cooler to said exhaust line for discharge of the condensate and particulate matter through said exhaust line; anda control valve for controlling flow rate of the recirculated portion of the exhaust gas responsive to the control signals, thereby providing closed loop control of amount of exhaust gas recirculation responsive to the sensed concentration of the at least one exhaust gas component.