CN1262740C - Internal combustion engine exhauster - Google Patents

Internal combustion engine exhauster Download PDF

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Publication number
CN1262740C
CN1262740C CN 01142472 CN01142472A CN1262740C CN 1262740 C CN1262740 C CN 1262740C CN 01142472 CN01142472 CN 01142472 CN 01142472 A CN01142472 A CN 01142472A CN 1262740 C CN1262740 C CN 1262740C
Authority
CN
China
Prior art keywords
combustion engine
internal combustion
air outlet
outlet flue
pit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 01142472
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Chinese (zh)
Other versions
CN1421596A (en
Inventor
仲伟胜
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Changfa Power Machinery Co., Ltd., Changzhou City
Original Assignee
CHANGFA INDUSTRIAL GROUP Co Ltd JIANGSU PROV
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by CHANGFA INDUSTRIAL GROUP Co Ltd JIANGSU PROV filed Critical CHANGFA INDUSTRIAL GROUP Co Ltd JIANGSU PROV
Priority to CN 01142472 priority Critical patent/CN1262740C/en
Publication of CN1421596A publication Critical patent/CN1421596A/en
Application granted granted Critical
Publication of CN1262740C publication Critical patent/CN1262740C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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  • Exhaust Silencers (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

The present invention relates to an internal combustion engine exhauster. The present invention is characterized in that the inner wall of an exhaust channel or an exhaust pipe of a cylinder head of an internal combustion engine is provided with bosses and notches, so that the exhaust airflow flowing through the exhaust channel is blocked, and the noise is reflected and counteracted so as to reduce the exhaust noise.

Description

A kind of venting gas appliance of internal-combustion engine
Technical field
The present invention relates to a kind of venting gas appliance of internal-combustion engine, it is used for the vent systems of internal-combustion engine.
Background technique
Noise when reducing internal combustion engine, reduce the pollution of noise to environment, prior art has been done various improvement to the vent systems of internal-combustion engine, comprising the shape of optimizing air outlet flue, at the terminal dress of vent systems silencing apparatus, particularly the structure of silencing apparatus a large amount of improvement have been done to reduce the exhaust sound of motor with structure, but the exhaust passage inwall in the vent systems is not made the roughness significant improvement of surperficial shape, even the surface roughness of research air outlet flue, it also is the air outlet flue of emphasizing as far as possible to make smooth smoothness, reduce air-flow and discharge resistance, allow discharge gas at the flow velocity of air outlet flue inwall as quickly as possible reducing resistance, and noise reduction concentrates in the silencing apparatus and finishes.
Summary of the invention
The purpose of this invention is to provide a kind of novel discharging unit of internal combustion engine, make high velocity air air-flow when flowing through this device of combustion gas be blocked and produce the eddy current of a lot of non-rules; Simultaneously, make that the noise sound wave in the exhaust passage produces the sound wave of more non-rule at this device inwall reflex time, reach the effect of cancelling each other, thereby reduce the noise of internal-combustion engine.
The invention provides a kind of venting gas appliance of internal-combustion engine, this device is to make boss or pit on the inwall in the outlet pipe exhaust passage in the exhaust passage of cylinder head or between cylinder head and silencing apparatus, exhaust airstream in the exhaust passage of flowing through is blocked, and noise waves is by the reflection of boss or pit and weaken.
Compared with prior art, owing to adopted the air outlet flue that the inwall of boss or pit is arranged of the present invention, make and on the wall of chamber, produce retardance in the combustion gas stream exhaust passage before arriving silencing apparatus, sound wave is also by the jog hyporeflexia on the inwall, make the exhaust passage also play the retardance air-flow as silencing apparatus, form complicated eddy current reflective sound wave, reach noise reduction.Because reality is produced the internal-combustion engine cylinder head and the outlet pipe great majority adopt casting technique, as long as make desired boss or pit shape when making the loam core, the finished product cylinder head that casts out and the inwall of outlet pipe generally needn't remake cold machining processing, as long as sand removal is clean, just can use.Using present technique does not need very big investment just can realize.
Description of drawings
Fig. 1 is discharging unit of internal combustion engine first an embodiment's of the present invention sectional drawing;
Fig. 2 is Fig. 1 first embodiment's a side view.
Embodiment
Same or analogous parts are represented with same label in the Figure of description of the present invention.
Present invention is described below by embodiment and with reference to accompanying drawing.
Fig. 1 is the sectional drawing of first embodiment of the invention.Outlet pipe 2 can be by passing on the actinal surface of giving vent to anger of air outlet flue 5 that bolt 9 that hole 4 is screwed into screw 3 is fastened on internal-combustion engine cylinder head 1 among the figure, and waste gas can be through cylinder head air outlet flue 5 and outlet pipe air outlet flue 6 again through the silencing apparatus discharging.Be formed with pit 7 or boss 8 at the air outlet flue 5 of apparatus of the present invention and the inwall of air outlet flue 6, these pits 7 or boss 8 can become the geometrical shape of rule also can become the geometrical shape of non-rule, its put in order can be the rule also can be irregular, the concrete data of its quantity, shape and arrangement can come to optimize repeatedly by experiment, obtain being used for the best setting of various different internal combustion engine types.
Fig. 2 is first embodiment's a side view.Figure pits 7 and boss 8 be non-to be laid on air outlet flue 5 inwalls of cylinder head 1 regularly.
Boss 8 of the present invention or pit 7 can also be made long arc strip, are laid on the inwall of cylinder head or outlet pipe, and whole exhaust airstream is made water conservancy diversion, reach the effect that noise abatement sound does not increase resistance again.Can only in the air outlet flue 5 of cylinder head 1, lay the pit 7 or the boss 8 of apparatus of the present invention; Also can only in the air outlet flue 6 of outlet pipe 2, lay; Can also in the air outlet flue 5 and 6 of cylinder head 1 and outlet pipe 2, all lay.The present invention can be applied on the oil-burning internal combustion engine and also can be applied on the gas internal-combustion engine.No matter be single cylinder engine or multi-cylinder engine, no matter be vertical or horizontal or inclined engine, can use the present invention, reach the effect that reduces noise.
The present invention has many modification, all among the present invention's spirit scope.

Claims (4)

1. discharging unit of internal combustion engine,
Air outlet flue inwall at internal-combustion engine cylinder head air outlet flue or outlet pipe is formed with boss or pit, and the exhaust airstream in the exhaust passage of flowing through is blocked, thereby reduces exhaust sound;
It is characterized in that: the shape of described boss or pit or arrangement are irregular; Form many discontinuous separate components.
2. discharging unit of internal combustion engine as claimed in claim 1 is characterized in that: described boss or pit only are arranged in the cylinder head air outlet flue.
3. discharging unit of internal combustion engine as claimed in claim 1 is characterized in that: described boss or pit only are arranged in the air outlet flue of outlet pipe.
4. use internal-combustion engine as the venting gas appliance of claim 1～3.
CN 01142472 2001-11-29 2001-11-29 Internal combustion engine exhauster Expired - Fee Related CN1262740C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 01142472 CN1262740C (en) 2001-11-29 2001-11-29 Internal combustion engine exhauster

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 01142472 CN1262740C (en) 2001-11-29 2001-11-29 Internal combustion engine exhauster

Publications (2)

Publication Number Publication Date
CN1421596A CN1421596A (en) 2003-06-04
CN1262740C true CN1262740C (en) 2006-07-05

Family

ID=4676825

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 01142472 Expired - Fee Related CN1262740C (en) 2001-11-29 2001-11-29 Internal combustion engine exhauster

Country Status (1)

Country Link
CN (1) CN1262740C (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2514214B (en) * 2012-09-25 2015-04-22 Messier Dowty Ltd Aircraft component noise reducing patch
CN103953786A (en) * 2014-02-18 2014-07-30 章华 Damping and decelerating structure for labyrinth disk
CN104791317A (en) * 2015-03-16 2015-07-22 常州市福记机械有限公司 Hydraulic control valve and hydraulic control one-way valve
CN104776029A (en) * 2015-04-16 2015-07-15 广东美芝制冷设备有限公司 Rotary compressor
CN107044331B (en) * 2017-06-07 2020-04-10 吉林大学 Composite bionic texture tail pipe of tractor
CN107023370A (en) * 2017-06-08 2017-08-08 吉林大学 A kind of bionical texture tailpipe of the rectangle of tractor
CN110953100A (en) * 2019-12-13 2020-04-03 重庆隆鑫机车有限公司 Motor tricycle engine advances exhaust system and engine
CN111947313A (en) * 2020-08-28 2020-11-17 华帝股份有限公司 Bottom shell assembly, shell structure and heat exchange equipment applying bottom shell assembly and shell structure

Also Published As

Publication number Publication date
CN1421596A (en) 2003-06-04

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Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
ASS Succession or assignment of patent right

Owner name: CHANGFA INDUSTRY GROUP CO., LTD., JANGSU

Free format text: FORMER OWNER: JIANGSU CHANGFA GROUP

Effective date: 20050218

C41 Transfer of patent application or patent right or utility model
TA01 Transfer of patent application right

Effective date of registration: 20050218

Address after: 213176 Lijia Town, Wujin District, Jiangsu, Changzhou

Applicant after: Changfa Industrial Group Co., Ltd., Jiangsu Prov.

Address before: 213022 New District Road, hi tech Development Zone, Jiangsu, Changzhou

Applicant before: Jiangsu Changfu Group

C14 Grant of patent or utility model
GR01 Patent grant
EE01 Entry into force of recordation of patent licensing contract

Assignee: Changfa Power Machinery Co., Ltd., Changzhou City

Assignor: Changfa Industrial Group Co., Ltd., Jiangsu Prov.

Contract fulfillment period: 2006.8.1 to 2016.8.1 contract change

Contract record no.: 2008320000347

Denomination of invention: Internal combustion engine exhauster

Granted publication date: 20060705

License type: Exclusive license

Record date: 2008.9.25

LIC Patent licence contract for exploitation submitted for record

Free format text: EXCLUSIVE LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2006.8.1 TO 2016.8.1

Name of requester: CHANGFA POWER MACHINERY CO., LTD., CHANGZHOU CITY

Effective date: 20080925

ASS Succession or assignment of patent right

Owner name: CHANGFA POWER MACHINERY CO., LTD., CHANGZHOU CITY

Free format text: FORMER OWNER: CHANGFA INDUSTRIAL GROUP CO., LTD., JIANGSU PROV.

Effective date: 20110315

C41 Transfer of patent application or patent right or utility model
COR Change of bibliographic data

Free format text: CORRECT: ADDRESS; FROM: 213176 LIJIA TOWN, WUJIN DISTRICT, CHANGZHOU CITY, JIANGSU PROVINCE TO: 213176 CHANGFA INDUSTRIAL PARK, NANMEN, WUJIN DISTRICT, CHANGZHOU CITY, JIANGSU PROVINCE

TR01 Transfer of patent right

Effective date of registration: 20110315

Address after: 213176 Chang FA Industrial Zone, South Gate, Wujin District, Jiangsu, Changzhou

Patentee after: Changfa Power Machinery Co., Ltd., Changzhou City

Address before: 213176 Lijia Town, Wujin District, Jiangsu, Changzhou

Patentee before: Changfa Industrial Group Co., Ltd., Jiangsu Prov.

CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20060705

Termination date: 20151129

EXPY Termination of patent right or utility model