Multi-filtering apparatus of engine-exhaust gas

Engine exhaust purification device according to the invention is a composite, it is placed in rear engine, a diesel oxidation catalyst (DOC) in which the engine is installed longitudinally in the direction perpendicular to the arrangement direction; Urea mixing pipe, which is installed long on the upper side of the engine in an orthogonal direction of the longitudinal direction of the diesel oxidation catalyst; And is installed long on the upper side of the engine in an orthogonal direction of the longitudinal direction of the diesel oxidation catalyst selective reduction catalyst (SCR) are arranged in parallel with the urea mixing pipe in the longitudinal direction of the diesel oxidation catalyst; may include. With the engine exhaust gas purification apparatus composite according to the present invention, there is an advantage that can be best designed to be easily mounted in a limited space in the engine compartment.