Structure of exhaust system for cda engine

Abstract

A structure of an exhaust system for a cylinder deactivation (CDA) engine may include first, second and third baffles which are coupled in a main muffler, and divide an interior of the main muffler into first, second, third and fourth spaces respectively, a connecting pipe which connects the second space and the third space of the main muffler, and has a passage in which the exhaust gas flows, a first valve coupled to the passage of the connecting pipe to open and close the passage of the connecting pipe, and a second valve openably and closably coupled to the second baffle disposed between the second space and the third space, wherein the first baffle coupled between the first space and the second space, and the third baffle coupled between the third space and the fourth space, have a plurality of holes so that the exhaust gas flows therethrough.

Description

[0001] Cross References to Related Applications [0002] This application claims priority from Korean Patent Application No. 10-2013-122376 filed on Oct. 15, 2013, the entire contents of which are hereby incorporated by reference for all purposes. technical field [0003] The present invention relates to the structure of an exhaust system for a vehicle, more particularly, to the structure of an exhaust system for a (CDA) engine with cylinder deactivation technology, in which the main muffler is divided into four spaces by three partitions, set A connecting pipe, a first valve and a second valve, the connecting pipe connects the second space and the third space, the first valve is connected to the channel of the connecting pipe, the second valve is connected to the and the third space, thereby reducing the noise in the exhaust gas with maximum efficiency according to the characteristics of the engine. Background technique [0004] Recently, with regard to increasing concerns...

AI Technical Summary

Problems solved by technology

[0010] However, although the CDA engine has the advantages of low fuel consumption and high fuel efficiency compared to the conventional engine, there is a problem that the main component of the engine noise changes and the low-frequency noise increases due to the fuel in some cylinders not being ignited

[0014] However, in the case of the structure of the discharge system of the CDA in which a separate additional muffler is installed in the related art, there is still a problem that it is necessary to reduce the space for other parts (fuel tank, rear suspension, interior space, etc.) to An additional muffler is installed between the sub muffler and the main muffler, and the weight of the vehicle is excessively increased due to the extra muffler

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