Waste gas post-processing system of twin-turbo supercharged engine

Abstract

The invention discloses a waste gas post-processing system of a twin-turbo supercharged engine, which belongs to the technical field of engines and is aiming at solving the problem that the three-way catalytic conversion efficiency is low in the prior art. The waste gas post-processing system of a twin-turbo supercharged engine comprises a first gas exhaust manifold and a second gas exhaust manifold, wherein a gas inlet of the first gas exhaust manifold is connected to a waste gas outlet of a first turbo supercharger; a gas inlet of the second gas exhaust manifold is connected to a waste gas outlet of a second turbo supercharger; the gas outlet of the first gas exhaust manifold and the gas outlet of the second gas exhaust manifold are connected to a three-way catalyst; a meeting chamber is arranged among the gas outlet of the first gas exhaust manifold and the gas outlet of the second gas exhaust manifold and the three-way catalyst; the gas outlets of the first gas exhaust manifold and the second gas exhaust manifold are connected to the meeting chamber after being converged; and the meeting chamber is connected to the catalyst. The waste gas post-processing system of a twin-turbo supercharged engine disclosed by the invention is used for processing the waste gas produced by an engine.

Description

technical field [0001] The invention relates to the technical field of engines, in particular to an exhaust gas post-treatment system of a twin-turbocharged engine. Background technique [0002] At present, the intake and exhaust system of the engine usually adopts turbocharging to increase the power of the engine. The turbocharging is to compress the air in advance and then inject it into the cylinder of the engine. Turbocharging is usually achieved by a turbocharger. Exhaust gas turbocharging relies on the remaining kinetic energy of the exhaust gas from the engine to drive the turbine to rotate. The advantage is that the engine power is increased by increasing the turbine speed and the intake pressure. Small, it cannot drive the turbine to rotate at high speed to increase the intake pressure. At this time, the engine power is equal to that of natural aspiration. When the speed increases, the turbocharger works, and the power will suddenly increase. For the turbo lag phe...

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Problems solved by technology

[0005] The embodiment of the present invention provides an exhaust gas post-treatment system of a twin-turbocharged engine, which is used to solve the technical problem of low three-way catalytic conversion efficiency in the prior art

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