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Mufflers, engines with mufflers, and portable work machines

A muffler and engine technology, which is applied to machines/engines, mechanical equipment, mufflers, etc., can solve problems such as the influence of the exhaust gas purifier J8 engine, catalyst deterioration, etc., to suppress the excessive temperature rise of the whole, compact weight balance, and suppress the temperature. rising effect

Active Publication Date: 2019-11-05
YAMABIKO CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in this exhaust gas cleaner J8, there is a problem that the exhaust gas cleaner J8 is easily affected by the heat generated by the engine itself, and the catalyst coated on the exhaust gas cleaner J8 is easily deteriorated due to heat.

Method used

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  • Mufflers, engines with mufflers, and portable work machines
  • Mufflers, engines with mufflers, and portable work machines
  • Mufflers, engines with mufflers, and portable work machines

Examples

Experimental program
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Embodiment Construction

[0024] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 2 and image 3 The muffler according to the embodiment of the present invention is shown. The muffler 1 includes a muffler case 2 , a partition 3 , and an exhaust gas cleaner 4 . The muffler case 2 has an inner wall surface 2A having an exhaust gas inlet 20 connectable to an exhaust port of an engine (not shown) and an outer wall surface 2B having an exhaust gas outlet 21 . Here, the inside means the side facing the engine on which the muffler 1 is mounted, and the outside means the side facing the outside.

[0025] The partition plate 3 is provided in the muffler case 2 and divides the inner space of the muffler case 2 into a first chamber 2S1 in which the exhaust gas inlet 20 is opened and a second chamber 2S2 in which the exhaust gas outlet 21 is opened. In the illustrated example, the muffler case 2 includes an inner split body 2X having an inner wall surfa...

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PUM

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Abstract

The present invention provides a muffler, an engine with a muffler, and a portable work machine. An object of the present invention is to reduce the amount of protrusion of the muffler toward the side of the engine or the working machine main body. A muffler (1) according to the present invention includes a muffler housing (2) having an inner wall surface (2A) and an outer wall surface (2B), wherein the inner wall surface (2A) has an exhaust gas inlet (20) connected to an exhaust port of the engine and the outer wall surface (2B) has an exhaust-gas outlet (21); a division plate (3) for separating the internal space of the muffler housing (2) into a first chamber (2S1) for an opening of the exhaust gas inlet (20) and a second chamber (2S2) for an opening of the exhaust gas outlet (21); and an exhaust gas purifier (4) installed on the division plate (3) and communicating the first chamber (2S1) with the second chamber (2S2). The inner wall surface (2A) has a bulge portion (22) protruding towards the engine side relative to the exhaust gas inlet (20), and an inner end portion of the exhaust gas purifier (4) is accommodated in the bulge portion (22).

Description

technical field [0001] The invention relates to a muffler, an engine with a muffler and a portable working machine equipped with an engine with a muffler. Background technique [0002] Conventionally, among mufflers used for small engines, there is known a muffler in which an expansion space for exhaust gas is formed in a relatively compact box-shaped muffler casing. Such as figure 1 As shown, the basic structure of this existing muffler J1 is as follows: by arranging a partition J3 inside the muffler housing J2, a first expansion chamber J5 with an exhaust gas inlet J4 is formed on one side of the partition J3, and The second expansion chamber J7 with exhaust gas outlet J6 is formed on the other side of the partition J3, and an exhaust gas purifier J8 coated with a catalyst is set on the partition J3, so that the first expansion chamber J5 and the second expansion chamber J7 Interconnection (refer to the following patent document 1). [0003] prior art literature [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N1/08F01N13/00
CPCF01N1/08F01N13/00
Inventor 野泽胜
Owner YAMABIKO CORP