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Air duct assembly for engine

An air duct and engine technology, applied in the field of air intake system, can solve problems such as limiting hydrocarbon filtering space

Active Publication Date: 2015-06-03
GM GLOBAL TECH OPERATIONS LLC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Applications with short longitudinal length limit hydrocarbon filter space where length is consumed by bellows and tuner

Method used

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  • Air duct assembly for engine
  • Air duct assembly for engine
  • Air duct assembly for engine

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Embodiment Construction

[0049] The following description of certain exemplary embodiments is merely exemplary in nature and is in no way intended to limit the invention, its application or uses.

[0050] now refer to figure 1 , the air intake system of the prior art provides fresh air to the engine intake pipe. The air intake system includes an air cleaner housing 14 housing an air cleaner not shown. Ambient air enters the air cleaner housing 14 through an intake conduit 16 . After passing through a filter housed within the housing 14 , the air exits through an outlet duct assembly indicated generally at 20 . Airflow will continue into the engine intake, which can be the throttle body, turbo or supercharger inlet. Such as figure 1 As shown, duct assembly 20 includes air cleaner housing 24 , flexible bellows 26 , sound attenuation tuner 28 and flexible bellows 30 . The bellows 26 is attached to the air cleaner housing 24 with hose clamps 34 . The bellows 26 is connected to the tuner 28 by hose c...

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Abstract

An air duct assembly supplies air from an air cleaner housing to an engine throttle and includes a first duct connected to the air cleaner housing and a second duct connected to the engine air intake. Open ends of the first and second ducts are spaced from one another and the second duct has a flared bell mouth at its open end. The second duct includes a sleeve that defines an attenuation chamber. A flexible bellows overlies the first and second ducts and the sleeve, and extends across the space between the first and second ducts to provide an airtight connection therebetween and flex during relative motion between the air cleaner housing and the engine air intake. A hydrocarbon adsorbing material can be housed within the attenuation chamber.

Description

technical field [0001] The present invention relates to an air intake system for an engine, and more particularly provides a new and improved duct assembly for accommodating relative movement between the engine and air filter and for attenuating engine noise. Background technique [0002] Automotive internal combustion engines use a throttle body to adjust the engine power set point. Some engines have additional charging equipment, including turbo and supercharger mechanisms that compress intake air upstream of the throttle body to improve engine performance. All internal combustion engines must receive a constant supply of fresh air in order to achieve the combustion of fuel. The engine intake system is located upstream of the engine intake duct, and its main functions are air filtration and noise attenuation. [0003] The air intake system begins with the intake ducts that bring dry, cool air into the system. The intake duct will deliver air into the air cleaner housing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M35/104F02M35/12
CPCF02M35/10137F02M35/10281F02M35/10295F02M35/10321F02M35/1216
Inventor S. K. 麦肯兹E. R. 塔克
Owner GM GLOBAL TECH OPERATIONS LLC