| 摘要 |
PURPOSE: An EGR(Exhaust Gas Recirculation) system is provided to reduce an amount of Nox by easily supplying exhaust gas to an intake section using an EGR turbo charger, which uses exhaust pressure of exhaust gas as a power source. CONSTITUTION: An auxiliary exhaust pipe(20) connects one side of an exhaust manifold with the center of an exhaust pipe(7). An EGR turbo charger(24) is provided to supply exhaust gas to an intake section. The EGR turbo charger(24) includes an EGR turbine(22), which is rotated by exhaust pressure of exhaust gas passing through the auxiliary exhaust pipe(20) and an EGR compressor(23) to promote recirculation of exhaust gas. The EGR compressor(23) is coaxially coupled to the EGR turbine(22) and installed on an EGR pipe(9). A valve(21) is set on a rear end of the EGR turbine(22) so as to selectively open the auxiliary exhaust pipe(20).
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