초록 ▼

A diesel-cycle engine with a unique exhaust gas recirculation system includes a plurality of cylinders with fuel feed for each of the cylinders and an intake manifold for distributing intake air to each of the cylinders for combustion of the fuel charges therein with generation of exhaust gas. The e

A diesel-cycle engine with a unique exhaust gas recirculation system includes a plurality of cylinders with fuel feed for each of the cylinders and an intake manifold for distributing intake air to each of the cylinders for combustion of the fuel charges therein with generation of exhaust gas. The exhaust gas is discharged to ambient atmosphere through an exhaust line with a gas turbine therein. The gas turbine drives an intake compressor which serves to compress the intake air. An engine controller controls a valve regulating the amount of exhaust gas recirculation responsive to sensed concentration of an exhaust gas component. In another embodiment, an engine controller controls a valve regulating the amount of exhaust gas recirculation, responsive to sensed demand for torque and control of fuel injection quantity is responsive to sensed concentration of an exhaust gas component. An exhaust gas recirculation line recirculates a portion of the collected exhaust gas to the combustion chambers through an exhaust gas cooler which serves to cool the gas and separate out a condensate and particulate matter. A return line leading from the exhaust gas cooler to the exhaust line serves to discharge the separated condensate and particulate matter through the exhaust line to the ambient atmosphere.

대표청구항 ▼

1. A diesel-cycle engine comprising:a plurality of cylinders, each cylinder providing a combustion chamber; 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 fuel charges the

1. A diesel-cycle engine comprising:a plurality of cylinders, each cylinder providing a combustion chamber; 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 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; a turbine in said exhaust line; an intake compressor, driven by said turbine, for compressing the intake air; 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; a control valve for controlling flow rate of the recirculated portion of the exhaust gas; and fuel injectors for feeding the fuel charges in succession to each of said combustion chambers, responsive to said control signals, thereby providing closed loop control of amount of fuel feed responsive to the sensed concentration of the at least one exhaust gas component; and wherein said engine controller receives a torque command signal, sets the control signals in accordance with the torque command signal and the sensed concentration to provide maximum exhaust gas recirculation consistent with torque command, and controls the plural fuel injectors to minimize formation of particulate matter in the exhaust gas.