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Air filter for engine of operation machine

An air filter and engine technology, which is applied in the direction of machines/engines, engine components, combustion air/combustion-air treatment, etc., can solve the problems of reduced filtration performance, reduced filtration performance of filter elements, clogging, etc., to prevent Effects of clogging, improvement of durability life, and improvement of durability

Active Publication Date: 2014-02-12
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In addition, depending on the operating posture of an engine for a work machine, blowby gas discharged from the breather pipe may contain spray of lubricating oil. If the spray of lubricating oil adheres to the air cleaner filter element, the filtering performance of the filter element is reduced, in this case, if a filter element made of non-woven fabric is used, the reduction in filtering performance is less than that of a paper filter element
[0006] However, it is known that if dust adheres to the part of the filter element made of non-woven fabric that is wetted by the spray of lubricating oil, it will be clogged and its filtration performance will be significantly reduced.
Therefore, in the air cleaner of the working machine engine that is often operated in a dusty environment, the durable life of the filter element made of non-woven fabric is short

Method used

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  • Air filter for engine of operation machine
  • Air filter for engine of operation machine
  • Air filter for engine of operation machine

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Embodiment Construction

[0035] Embodiments of the present invention will be described below based on the drawings.

[0036] exist figure 1 In the figure, symbol E is a hand-held four-stroke engine as an engine for a work machine, which is attached to a drive unit of the power trimmer T as a power source of the power trimmer T, for example. With regard to the power trimmer T, since the cutter C is used in various directions depending on the working state, the engine E is also greatly tilted or reversed, and its operating posture is always changed.

[0037] Such as figure 2 As shown, the engine main body 1 of the above-mentioned engine E is configured such that the cylinder block 3 and the cylinder head 5 are integrated, the cylinder block 3 is embedded with the piston 2, and the cylinder head 5 has a top surface facing the piston 2. The combustion chamber 4 is provided on the cylinder head 5 with an intake port 6 and an exhaust port (not shown) respectively opening in the combustion chamber 4; and ...

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PUM

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Abstract

The invention provides an air filter for an engine of an operation machine. Even if the engine is operated in a dusty environment, the air filter is still hard to be blocked, and thereby a long service lifetime can be ensured. The air filter is formed by having a filtering component (25) in a manner that the inner part of an air filter housing (22) is divided into an unpurified chamber (23) connected to an air inlet (20) and a purified chamber (24) connected to an air outlet (21). One side of the air filter housing (22) is provided with the air inlet (20) opening towards the air, and the other side is provided with the air outlet (21) communicated with a carburetor (10) of an engine (E). The filtering component (25) is composed of a paper first filter core (35) facing the unpurified chamber (23) and a non-woven fabric second filter core (36).

Description

technical field [0001] The present invention relates to an improvement of an air cleaner of an engine for a work machine, which is in a filter case to partition the inside thereof into a raw room connected to the air inlet and a It is constructed by disposing a filter member in the form of a clean room connected to the air outlet. The filter housing has an air inlet opening to the atmosphere on one side, and an air inlet communicating with the carburetor of the engine on the other side. air outlet. Background technique [0002] As disclosed in Patent Document 1, it is known that a member made of nonwoven fabric is used as a filter member in the air cleaner of the above-mentioned engine. In addition, as disclosed in Patent Document 2, it is known that, in an engine for a work machine, a breather pipe communicating with a crank chamber or a valve train chamber is connected to a clean room of an air cleaner or a carburetor, and the air pipe connected to the air cleaner is conn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M35/024
Inventor 谷口彻
Owner HONDA MOTOR CO LTD
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