CN103008537A - Helical air inlet channel processing method of cooling supercharged diesel engine - Google Patents

Helical air inlet channel processing method of cooling supercharged diesel engine Download PDF

Info

Publication number
CN103008537A
CN103008537A CN2012104889025A CN201210488902A CN103008537A CN 103008537 A CN103008537 A CN 103008537A CN 2012104889025 A CN2012104889025 A CN 2012104889025A CN 201210488902 A CN201210488902 A CN 201210488902A CN 103008537 A CN103008537 A CN 103008537A
Authority
CN
China
Prior art keywords
air inlet
diesel engine
inlet channel
processing method
supercharged diesel
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.)
Pending
Application number
CN2012104889025A
Other languages
Chinese (zh)
Inventor
管玉青
高从许
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.)
Tianchang Cylinder Head Co Ltd
Original Assignee
Tianchang Cylinder Head Co Ltd
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 Tianchang Cylinder Head Co Ltd filed Critical Tianchang Cylinder Head Co Ltd
Priority to CN2012104889025A priority Critical patent/CN103008537A/en
Publication of CN103008537A publication Critical patent/CN103008537A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/12—Improving ICE efficiencies

Landscapes

  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The invention discloses a helical air inlet channel processing method of a cooling supercharged diesel engine. The helical air inlet channel processing method of the cooling supercharged diesel engine comprises the steps of manufacturing a helical air inlet channel into a test box by computer-aided engineering (CAE), adjusting the position and the size of an air inlet of the channel so as to enable the swirl rate to be 1.7 to 2.3, and enabling the flow coefficient to be 0.35 to 0.4; forming a three-dimensional structure of the air inlet channel by the computer aided manufacturing (CAM), and carrying out the air inlet channel performance modification test on an air inlet channel flow stabilizing test bench; scanning the modification a test to be a three-dimensional picture, and processing the three-dimensional picture to manufacture an air inlet channel casting mould by the CAM processing. According to the helical air inlet channel processing method of the cooling supercharged diesel engine, the helical air inlet channel of the supercharged diesel engine, which is provided with a proper spiral channel section, is casted into a diesel engine cylinder cover, so that the performance parameters of the diesel engine intake port are stable, and the swirl rate and the flow coefficient meet the performance requirements on the maximum torque, low oil consumption and low smoke intensity of the entire supercharged diesel engine. The helical air inlet channel processing method is suitable for cooling supercharged euro-III emission diesel engines with the cylinder diameter being Phi118mm.

Description

A kind of cold supercharged diesel engine spiral inlet duct processing method
Technical field
The present invention relates to a kind of cold supercharged diesel engine spiral inlet duct processing method.
Background technology
When the diesel engine intake stroke began, inlet valve was opened, and air-flow enters spiral inlet duct 1 from air inlet, during through spiral section 2, produce helical flow (eddy current), and under the effect of inertia, keep eddy current to enter cylinder 4 through inlet valve 3, continue certain swirl momentum square helical flow; Simultaneously enter cylinder because air-flow departs from cylinder axis, also have certain swirl momentum square, this two parts swirl momentum square merges in cylinder, makes the interior air-flow of cylinder have larger strength of vortex (swirl ratio).Same under the effect of inertia, after the diesel engine compression stroke finished, air-flow kept eddy current in the cylinder, fully mixes with the fuel oil that sprays into, and fuel oil is fully burnt.Yet, cold supercharging Europe III is discharged in the type in the present exploitation φ 118mm cylinder diameter, because Flow coefficient of inlet is not enough, swirl ratio is too high, the air that causes entering in the cylinder mixes inhomogeneous, insufficient with fuel oil, fuel consume is high when diesel engine calibration point and low speed, smoke intensity is large, is not suitable for Europe III discharging type, demands urgently improving.
Summary of the invention
Problem for prior art exists the object of the invention is to propose a kind of cold supercharged diesel engine spiral inlet duct processing method, by enforcement of the present invention, can produce that fuel consume is low, smoke intensity is little, is applicable to the diesel engine of Europe III discharging.
For reaching this purpose, the present invention by the following technical solutions:
A kind of cold supercharged diesel engine spiral inlet duct processing method may further comprise the steps:
CAE makes test box with spiral inlet duct by computer-aided engineering;
Adjust passage air inlet position and size, making swirl ratio is 1.7 to 2.3, and discharge coefficient is 0.35 to 0.4;
Make the air intake duct three-dimensional structure by computer auxiliaring manufacturing CAM;
By CAE described air flue three-dimensional structure is made test box, revise test in the enterprising promoting the circulation of qi of steady flow testbed of air passage road performance;
Revising test scan becomes 3-D graphic and through CAM processing, makes the air intake duct casting mould.
Preferably, swirl ratio is 2.1, and discharge coefficient is 0.37.
Preferably, swirl ratio is 2.3, and discharge coefficient is 0.4.
Compared with prior art, the present invention has following beneficial effect:
Among the present invention, the supercharged diesel engine spiral inlet duct that will have suitable helical duct section is cast in the cylinder cover for diesel engine, realize that the Diesel Engine Passage performance parameter is stable, swirl ratio and discharge coefficient satisfy the performance requirement of the low oil consumption of complete machine maximum torque point, low smoke intensity, be applicable to φ 118mm cylinder diameter in cold supercharging Europe III discharging diesel engine.
The invention accompanying drawing
Fig. 1 is a kind of cold supercharged diesel engine spiral inlet duct processing method flow chart that the embodiment of the invention 1 provides;
Fig. 2 is a kind of cold supercharged diesel engine spiral inlet duct front view that the embodiment of the invention 1 provides;
Fig. 3 is a kind of cold supercharged diesel engine spiral inlet duct side view that the embodiment of the invention 1 provides;
Fig. 4 is a kind of cold supercharged diesel engine spiral inlet duct top view that the embodiment of the invention 1 provides.
The specific embodiment
The embodiment of the invention 1 provides a kind of cold supercharged diesel engine spiral inlet duct processing method, to be processed into such as Fig. 2-to the cold supercharged diesel engine spiral inlet duct shown in the of 4; This processing method may further comprise the steps as shown in Figure 1:
Step 101, CAE makes test box with spiral inlet duct by computer-aided engineering.Wherein, CAE(Computer Aided Engineering, computer-aided engineering), refer to the structural mechanical property with Computer Aided Solution Analysis of Complex engineering and product, and the performance etc. of optimizing structure.
Step 102 is adjusted passage air inlet position and size, and making swirl ratio is 1.7 to 2.3, and discharge coefficient is 0.35 to 0.4.Above-mentioned adjustment is to carry out guaranteeing that its physical dimension satisfies under the prerequisite of instructions for use, mainly be on test box, spiral section channel entrance position and size (title sensitizing range) to be adjusted, revised, and the swirl ratio after the test modifications (surveying the wheel speed rpm of eddy current and the ratio of imaginary engine speed) and discharge coefficient; The problem high for diesel engine maximum torque point fuel consume, that smoke intensity is large is reduced to 2.1 with swirl ratio from original 2.7, makes simultaneously discharge coefficient reach 0.37; Perhaps swirl ratio is 2.3, and discharge coefficient is 0.4.
Step 103 is made the air intake duct three-dimensional structure by computer auxiliaring manufacturing CAM; The core of CAM (computer Aided Manufacturing, computer-aided manufacturing) is computer numerical control, is process or the system that Computer application is used for making production process.
Step 104 is made test box by CAE with described air flue three-dimensional structure, behind processing, assembling valve seating, the valve, revises test in the enterprising promoting the circulation of qi of steady flow testbed of air passage road performance;
Step 105 is revised test scan and is become 3-D graphic and through CAM processing, make the air intake duct casting mould.At last, this spiral inlet duct is cast in the cylinder cover for diesel engine, has reduced diesel engine maximum torque point fuel oil consumption and smoke intensity after the installation.
The above; only be the better specific embodiment of the present invention; but protection scope of the present invention is not limited to this; anyly be familiar with those skilled in the art in the technical scope that the present invention discloses; be equal to replacement or change according to technical scheme of the present invention and inventive concept thereof, all should be encompassed within protection scope of the present invention.

Claims (3)

1. a cold supercharged diesel engine spiral inlet duct processing method is characterized in that, may further comprise the steps:
CAE makes test box with spiral inlet duct by computer-aided engineering;
Adjust passage air inlet position and size, making swirl ratio is 1.7 to 2.3, and discharge coefficient is 0.35 to 0.4;
Make the air intake duct three-dimensional structure by computer auxiliaring manufacturing CAM;
By CAE described air flue three-dimensional structure is made test box, revise test in the enterprising promoting the circulation of qi of steady flow testbed of air passage road performance;
Revising test scan becomes 3-D graphic and through CAM processing, makes the air intake duct casting mould.
2. cold supercharged diesel engine spiral inlet duct processing method according to claim 1 is characterized in that, swirl ratio is 2.1, and discharge coefficient is 0.37.
3. cold supercharged diesel engine spiral inlet duct processing method according to claim 1 is characterized in that, swirl ratio is 2.3, and discharge coefficient is 0.4.
CN2012104889025A 2012-11-27 2012-11-27 Helical air inlet channel processing method of cooling supercharged diesel engine Pending CN103008537A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN2012104889025A CN103008537A (en) 2012-11-27 2012-11-27 Helical air inlet channel processing method of cooling supercharged diesel engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN2012104889025A CN103008537A (en) 2012-11-27 2012-11-27 Helical air inlet channel processing method of cooling supercharged diesel engine

Publications (1)

Publication Number Publication Date
CN103008537A true CN103008537A (en) 2013-04-03

Family

ID=47957951

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2012104889025A Pending CN103008537A (en) 2012-11-27 2012-11-27 Helical air inlet channel processing method of cooling supercharged diesel engine

Country Status (1)

Country Link
CN (1) CN103008537A (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201321909Y (en) * 2008-12-31 2009-10-07 天长缸盖有限公司 Helical inlet channel applicable to pressurized diesel engine with cylinder diameter of Phi 102mm
CN201334957Y (en) * 2008-12-31 2009-10-28 天长缸盖有限公司 Helical air inlet channel suitable for supercharger-type diesel with cylinder diameter of Phi 102mm
DE102009006274A1 (en) * 2009-01-27 2010-07-29 Dr.Ing.H.C.F.Porsche Aktiengesellschaft Device for re-conveying lubricant accumulating in cylinder head of multi-cylinder internal-combustion engine of motor vehicle into lubricant container, has jet pumps with drive stream formed by part of volumetric flow rate of oil pump
CN201972818U (en) * 2010-12-07 2011-09-14 天长缸盖有限公司 Novel diesel engine helical gas inlet duct

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN201321909Y (en) * 2008-12-31 2009-10-07 天长缸盖有限公司 Helical inlet channel applicable to pressurized diesel engine with cylinder diameter of Phi 102mm
CN201334957Y (en) * 2008-12-31 2009-10-28 天长缸盖有限公司 Helical air inlet channel suitable for supercharger-type diesel with cylinder diameter of Phi 102mm
DE102009006274A1 (en) * 2009-01-27 2010-07-29 Dr.Ing.H.C.F.Porsche Aktiengesellschaft Device for re-conveying lubricant accumulating in cylinder head of multi-cylinder internal-combustion engine of motor vehicle into lubricant container, has jet pumps with drive stream formed by part of volumetric flow rate of oil pump
CN201972818U (en) * 2010-12-07 2011-09-14 天长缸盖有限公司 Novel diesel engine helical gas inlet duct

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
师石金等: "发动机CAD/CFD设计技术", 《汽车工程》 *

Similar Documents

Publication Publication Date Title
JP6172193B2 (en) Engine intake system
Jiang et al. Parameter analysis of diesel helical intake port numerical design
CN203067072U (en) Cooling system for passenger car engine
CN201723260U (en) Cam shaft for recycling waste gas in diesel engine cylinder
CN201148929Y (en) Air-intake system of diesel
CN103008537A (en) Helical air inlet channel processing method of cooling supercharged diesel engine
CN201953496U (en) Double-spiral chamber air inlet channel of diesel engine
CN201810431U (en) Diesel engine intake duct
Mustafa et al. Application of box-behnken analysis on the optimisation of air intake system for a naturally aspirated engine
CN105952554A (en) Design method of internal combustion engine tangential air way structure all parameters
CN202360235U (en) Intake port structure of small general gasoline engine
CN101968010B (en) Die-casting cylinder cap for four-stroke small gasoline engine and manufacturing method thereof
CN201934229U (en) Double-tangential air inlet passage of four-valve cylinder diesel engine
CN101280733A (en) Double-air-intake type intake duct
JP2016180356A (en) Engine air-intake structure
CN201972818U (en) Novel diesel engine helical gas inlet duct
CN104389675B (en) Composite circular rotational flow scavenging system for multi-fuel aerial heavy engine
CN102102582A (en) Internal combustion engine eddy current air inlet passage with vane
CN201747492U (en) Vertical intake manifold structure
CN202468098U (en) Injection resonant cavity for air filter
CN201865812U (en) Communicated and combined inlet channel device of four-valve diesel
CN201810430U (en) Swirl ratio variable diesel air inlet system
CN106650152B (en) A kind of straight air flue design method of internal combustion engine
Changming et al. Multivalve intake port parametric design and performance optimization of the horizontal diesel engine
CN203756352U (en) Helical intake passage for intercooled electronically controlled diesel engines with cylinder diameter phi of 114mm

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C05 Deemed withdrawal (patent law before 1993)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20130403