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Intake air noise adjuster

A technology of adjusting device and changing device, applied in the direction of intake muffler, etc., can solve problems such as increase of intake sound

Inactive Publication Date: 2009-01-28
NISSAN MOTOR CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] Therefore, even in a state where quietness is to be ensured, such as slow acceleration and idling when the driver's accelerator pedal depression amount is small, the intake sound will increase unintentionally.

Method used

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  • Intake air noise adjuster

Examples

Experimental program
Comparison scheme
Effect test

no. 1 Embodiment approach

[0030] (structure)

[0031] figure 1 A conceptual diagram showing the overall configuration of the intake air sound adjustment device 1 according to the first embodiment of the present invention. However, figure 1 It is also applicable to the second, third and fourth embodiments which will be described later.

[0032] like figure 1 As shown, the intake sound adjustment device 1 of the first embodiment is installed on the intake pipe 2 (also referred to as "intake passage 2"), and the intake sound adjustment device 1 includes a communication pipe 4, an elastic body 6 and a flow Road area changing device 8.

[0033] First, the intake duct 2 and components related to the intake duct 2 will be described.

[0034] The intake duct 2 serves as an intake passage from the outside air 70 to the engine 10 , and it includes a dust-side intake duct 12 and a clean-side intake duct 14 .

[0035] A first open end of the dust-side intake duct 12 is connected to the air cleaner 16 , and a...

no. 2 approach

[0155] (structure)

[0156] Hereinafter, a second embodiment of the present invention will be described.

[0157] Figure 4 and Figure 5 The configuration of the intake air sound adjustment device 1 according to the second embodiment of the present invention is shown respectively.

[0158] Figure 4 shows the state of the flow path area changing device 8 during slow acceleration or idling, while Figure 5 The state of the flow path area changing device 8 during rapid acceleration is shown.

[0159] like Figure 4 and Figure 5 As shown, the configuration of the intake sound adjustment device 1 according to the second embodiment is substantially the same as that of the intake sound adjustment device 1 according to the first embodiment, except for the configuration of the flow path area changing device 8 . Therefore, a detailed description of the structure of components other than the flow path area changing device 8 is omitted.

[0160] The channel area changing device...

no. 3 approach

[0214] (structure)

[0215] Hereinafter, a third embodiment of the present invention will be described.

[0216] Image 6 and Figure 7 The configuration of the intake sound adjustment device 1 according to the third embodiment of the present invention is shown respectively. Image 6 shows the state of the flow path area changing device 8 during slow acceleration or idling, while Figure 7 The state of the flow path area changing device 8 during rapid acceleration is shown.

[0217] like Image 6 and Figure 7 As shown, the configuration of the intake sound adjustment device 1 according to the third embodiment is substantially the same as that of the intake sound adjustment device 1 according to the first embodiment, except for the configuration of the flow path area changing device 8 . Therefore, a detailed description of the structure of members other than the flow path area changing device 8 will be omitted.

[0218] The intake sound adjustment device 1 of the third ...

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PUM

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Abstract

An intake air noise adjuster includes: a communicating conduit including: a first end communicating to an intake air passage to an engine, and a second end communicating to an external air; an elastic body configured to block the communicating conduit; and a flow channel area changer configured to change a flow channel area of the communicating conduit based on a change of an intake air negative pressure caused in the intake air passage.

Description

technical field [0001] The present invention relates to an apparatus for improving intake sound (intake tone) generated from an intake system of a vehicle or the like. Background technique [0002] There is a conventionally known intake sound adjusting device capable of generating a forceful intake sound by introducing the intake sound (generated in the intake passage of the engine) into the passenger compartment of the vehicle during driving. [0003] Japanese Patent Laid-Open No. 2005-139982 (= JP2005139982) discloses an air intake sound adjustment device (referred to as "sound quality control device"), which includes a communicating pipe, an elastic body and an additional pipe. [0004] On the outer peripheral surface of the intake duct, the communication pipe is installed at a position farther from the engine than the position where the throttle chamber 8 for increasing and decreasing the intake air amount of the engine is provided. In this way, the communication pipe c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/12
Inventor 秋元孝顺福本一朗品田雅史河野崇史
Owner NISSAN MOTOR CO LTD
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