CN202811116U - Vacuum unit of automobile engine - Google Patents
Vacuum unit of automobile engine Download PDFInfo
- Publication number
- CN202811116U CN202811116U CN2012203661106U CN201220366110U CN202811116U CN 202811116 U CN202811116 U CN 202811116U CN 2012203661106 U CN2012203661106 U CN 2012203661106U CN 201220366110 U CN201220366110 U CN 201220366110U CN 202811116 U CN202811116 U CN 202811116U
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- Prior art keywords
- upper shell
- vacuum system
- lower shell
- vacuum
- shell body
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- Expired - Lifetime
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- 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
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- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The utility model discloses a vacuum unit of an automobile engine and solves the problem of providing negative pressure for an engine supercharger and a vehicle brake assist system. The vacuum unit is fixed at the top of an engine cylinder hood through a group of mounting bolts. A vacuum unit body comprises an upper housing and a lower housing. The upper housing and the lower housing are connected into a cavity structure through welding bars. The outer side of the upper housing is provided with a pipe connector which is connected with a vacuum control valve. The vacuum control valve is an electronic tee valve. One outlet of the electronic tee valve is connected with an ERG (exhaust gas recirculation) bypass actuator, another outlet of the electronic tee valve is connected with a tee valve, and the tee valve is communicated with a vacuum pump and a variable mechanism actuator of a brake assist system. The vacuum unit has the advantages of simple structure, low manufacturing cost and convenience in assembly and maintenance and meets the requirements of the engine supercharger and the vehicle brake assist system for negative pressure during braking.
Description
Technical field
The utility model relates to a kind of vacuum system of motor car engine, belongs to technical field of automobile engine.
Background technique
Modern Automobile Engine generally adopts exhaust turbine pressuring technology to promote power character, but the structure characteristic of turbosupercharged engine, make the automobile brake force aid system get the vacuum difficulty from intake manifold, therefore, need to install vacuum pump additional at the exhaust gas turbocharge motor.But when braking automobile, engine supercharger and car brakeing force aid system need negative pressure of vacuum simultaneously, this moment can be because of the not enough safety problem that causes of negative pressure of vacuum, so need to increase a vacuum system that is connected with the car brakeing force aid system with engine supercharger respectively, to guarantee providing sufficient negative pressure of vacuum as the vehicle brake braking, improve the Security of driving.
At present, the vacuum system of most of exhaust gas turbocharge motor adopts integrated form, and volume is larger, maintenance not easy to assemble; And when the pressurized machine vacuum control valve is worked, can produce pressure surge, affect the normal operation of other parts; In addition, existence is inhaled flat or is pressed quick-fried risk when negative pressure is larger.
The model utility content
The purpose of this utility model is the drawback for prior art, provide a kind of simple in structure, be convenient to dismounting maintenance, vacuum voltage regulation respond well the motor car engine vacuum system.
Problem described in the utility model realizes with following technical proposals:
A kind of motor car engine vacuum system, by one group of construction bolt be fixed on cylinder cover of engine above, the vacuum system body is comprised of upper shell and lower shell body, described upper shell and lower shell body are connected to a cavity structure by the welding muscle, be provided with an interface tube in the outside of upper shell, described interface tube is connected with vacuum control valve, described vacuum control valve is electronic three-way valve, one of them outlet is connected with EGR bypass final controlling element, and another outlet connects a three-way valve that is communicated with vacuum pump and force aid system for braking changeable mechanism final controlling element.
Above-mentioned motor car engine vacuum system is provided with three stiffening ribs in the upper shell internal cavities.
Above-mentioned motor car engine vacuum system, described upper shell and lower shell body are equipped with the welding muscle in both junctions, wherein upper shell welding muscle and lower shell body welding muscle are all preset the technique amount of interference, described upper shell welding muscle width is two times of lower shell body welding muscle width, also is provided with flash groove in lower shell body welding muscle both sides.
Above-mentioned motor car engine vacuum system, described vacuum control valve are installed on the outer wall of vacuum system body, in the vacuum control valve installation position installation base are set, and described installation base is the local groove structure of expecting of going.
Above-mentioned motor car engine vacuum system, described upper shell and lower shell body are respectively equipped with upper shell technique clamping stagnation groove and lower shell body technique clamping stagnation groove in the junction, the section configuration of described upper shell technique clamping stagnation groove and lower shell body technique clamping stagnation groove is right-angled trapezium, the outer side surface of upper shell technique clamping stagnation groove and lower shell body technique clamping stagnation groove is vertical surface, and inner side surface is the plane of inclination.
Above-mentioned motor car engine vacuum system, described construction bolt is arranged in the both sides of vacuum system body, is provided with technique at the construction bolt periphery and dodges the hole.
Above-mentioned motor car engine vacuum system, described interface tube is positioned at the upper shell front portion, is provided with the cover plate that is connected as a single entity with upper shell above interface tube, and on the cover board face is offered the long strip vent.
Above-mentioned motor car engine vacuum system, described lower shell body bottom is the concave surface arcuate structure, the end face coupling of this concave surface arcuate structure and engine air cylinder cap.
The utility model is used for storing vacuum, when preventing vehicle brake, because EGR(Exhaust gas recirculation device) the changeable mechanism final controlling element of bypass final controlling element and force aid system for braking needs negative pressure of vacuum simultaneously, cause affecting the normal operation of other parts because degree of vacuum provides the not enough safety problem that causes.Vacuum control valve of the present utility model is electronic three-way valve, its outlet is connected with EGR bypass final controlling element, another outlet connects a three-way valve that is communicated with vacuum pump and force aid system for braking changeable mechanism final controlling element again, and this structure can effectively reduce pressure fluctuating in inner, stablizes vacuum source pressure; The utility model can improve vacuum system body intensity by the inner chamber reinforcing rib structure, avoids vacuum system to produce modification, cracking phenomena because bearing negative pressure, improves simultaneously its NVH performance; The utility model has also taken into full account technologic feasibility, be equipped with the technique clamping stagnation groove that section configuration is right-angled trapezium at upper shell and lower shell body junction, conveniently add putting into and taking out of anchor clamps in man-hour at part, also design technique in the bolt mounting point and dodged the hole, provide the operating space for using setting tool; The welding muscle width that is arranged on vacuum system upper shell and lower shell body junction designs by 2:1, avoided between the upper and lower casing because engaging the not firm phenomenon that produces cracking, and also be provided with flash groove in lower shell body welding muscle both sides, prevent that weld flash from entering vacuum system inside, the adverse consequences of the pipeline that results in blockage, control valve.In a word, the utlity model has simple in structurely, low cost of manufacture is assembled characteristics easy to maintenance, can be common to other machinery, satisfies the demand that negative pressure of vacuum is provided for control pressurer system.
Description of drawings
The utility model is described in further detail below in conjunction with accompanying drawing.
Fig. 1 is mounting point of the present utility model schematic representation;
Fig. 2 is the utility model structural representation;
Fig. 3 is plan view of the present utility model;
Fig. 4 is the structural drawing of A-A section among Fig. 3;
Fig. 5 is the structural drawing of B-B section among Fig. 3;
Fig. 6 is the structural drawing of C-C section among Fig. 3;
Fig. 7 is plan view of the present utility model;
Fig. 8 is the structural drawing of D-D section among Fig. 7;
Fig. 9 is I place structure enlarged view among Fig. 8;
Figure 10 is the structural drawing of E-E section among Fig. 7.
Each label is among the figure: 1, changeable mechanism final controlling element, 2, cylinder cover of engine, 3, vacuum system body, 3-1, upper shell, 3-1-1, interface tube, 3-1-2, vent, the groove of expecting is removed in 3-1-3, part, and 3-1-4, technique are dodged the hole, 3-1-5, upper shell technique clamping stagnation groove, 3-1-6, stiffening rib, 3-1-7, upper shell welding muscle, 3-2, lower shell body, 3-2-1, concave surface arcuate structure, 3-2-2, lower shell body welding muscle, 3-2-3, lower shell body technique clamping stagnation groove, 3-2-4, flash groove, 4, vacuum control valve, 5, EGR bypass final controlling element, 6, vacuum pump.
Embodiment
Referring to Fig. 1, Fig. 2, the utility model by one group of construction bolt be fixed on cylinder cover of engine 2 above, vacuum system body 3 is comprised of upper shell 3-1 and lower shell body 3-2, described upper shell 3-1 and lower shell body 3-2 are connected to a cavity structure by the welding muscle, be provided with an interface tube 3-1-1 in the outside of upper shell 3-1, described interface tube 3-1-1 is connected with vacuum control valve 4, described vacuum control valve 4 is electronic three-way valve, one of them outlet is connected with EGR bypass final controlling element 5, and another outlet connects a three-way valve that is communicated with vacuum pump 6 and force aid system for braking changeable mechanism final controlling element 1.
Referring to Fig. 3, Fig. 6, the utility model is provided with three stiffening rib 3-1-6 in upper shell 3-1 internal cavities.
Referring to Fig. 7, Fig. 9, upper shell 3-1 of the present utility model and lower shell body 3-2 are equipped with the welding muscle in both junctions, wherein upper shell welding muscle 3-1-7 and lower shell body welding muscle 3-2-2 preset the technique amount of interference, described upper shell welding muscle 3-1-7 width is two times of lower shell body welding muscle 3-2-2 width, also is provided with flash groove 3-2-4 in the both sides of lower shell body welding muscle 3-2-2.
Referring to Fig. 2, Fig. 3, vacuum control valve 4 of the present utility model is installed on the outer wall of vacuum system body 3, in the vacuum control valve installation position installation base is set, and described installation base is the local groove structure 3-1-3 that expects of going.
Referring to Fig. 2, Fig. 7, Figure 10, upper shell 3-1 of the present utility model and lower shell body 3-2 are respectively equipped with upper shell technique clamping stagnation groove 3-1-5 and lower shell body technique clamping stagnation groove 3-2-3 in the junction, the section configuration of described upper shell technique clamping stagnation groove 3-1-5 and lower shell body technique clamping stagnation groove 3-2-3 is right-angled trapezium, the outer side surface of upper shell technique clamping stagnation groove 3-1-5 and lower shell body technique clamping stagnation groove 3-2-3 is vertical surface, and inner side surface is the plane of inclination.
Referring to Fig. 1, Fig. 7, construction bolt of the present utility model is arranged in the both sides of vacuum system body 3, is dissymmetrical structure, is provided with technique at the construction bolt periphery and dodges hole 3-1-4.
Referring to Fig. 2, Fig. 7, interface tube 3-1-1 of the present utility model is positioned at the front portion of upper shell 3-1, is provided with the cover plate that is connected as a single entity with upper shell above interface tube 3-1-1, and on the cover board face is offered long strip vent 3-1-2.
Referring to Fig. 5, Fig. 8, lower shell body 3-2 of the present utility model bottom is concave surface arcuate structure 3-2-1, the end face coupling of this concave surface arcuate structure 3-2-1 and engine air cylinder cap 2.
Referring to Fig. 1～Figure 10, working principle of the present utility model is: a kind of motor car engine vacuum system, it is provided with an interface tube 3-1-1 at vacuum system body 3, this interface is connected by sebific duct and vacuum control valve 4, vacuum control valve 4 is electronic three-way valve, its outlet is connected with EGR bypass final controlling element 5, another outlet connects a three-way valve that is communicated with vacuum pump 6 and force aid system for braking changeable mechanism final controlling element 1 again, this structure can effectively reduce pressure fluctuating in inner, stablizes vacuum source pressure.When motor starts for the first time, vacuum pump 6 keeps vacuum state after vacuum system inside can being evacuated, this moment, intake manifold swirl control valve and the required degree of vacuum of EGR control valve were provided by vacuum pump 6, when restarting behind the engine stoping operation, intake manifold swirl control valve and the required degree of vacuum of EGR control valve thus vacuum system provide, can improve engine start speed like this, reduce energy loss, and guarantee the in the running stability of required degree of vacuum of motor.In the utility model structure, offer long strip vent 3-1-2 above the interface tube 3-1-1 upper cover plate of vacuum control valve 4, one can avoid the installation difficulty brought because of gas pressure when sebific duct is installed, whether two pipelines that can observe jointing dock and put in place; Inner chamber at upper shell 3-1 is provided with three not equidistant stiffening ribs, is conducive to improve the intensity of vacuum system body 3, reduces noise; Adopt the part to remove to expect groove structure 3-1-3 between two spiro keyhole positions of vacuum control valve installation base, both satisfied requirement of strength, remove again to expect loss of weight, save cost; The design of the utility model welding muscle is a spotlight, and upper shell welds the muscle center line with lower shell body and aligns, and both width ratio are 2:1, and inside is provided with flash groove 3-2-4, prevents weld flash; Concave surface arcuate structure 3-2-1 is taked in the bottom of this vacuum system body 3, merges one with valve mechanism cover, and mounting structure is compact; The section configuration of upper shell technique clamping stagnation groove 3-1-5 of the present utility model and lower shell body technique clamping stagnation groove 3-2-3 is right-angled trapezium, the outer side surface of upper shell technique clamping stagnation groove 3-1-5 and lower shell body technique clamping stagnation groove 3-2-3 is vertical surface, inner side surface is the plane of inclination, is convenient to putting into and taking out of welding fixture; Take avoiding structure around four bolts hole that vacuum system body 3 is connected with cylinder cover of engine 2, upper shell had both been dodged the welding muscle, had dodged again the bolt setting tool.
The utility model can be common to other machinery, satisfies the demand that negative pressure of vacuum is provided for control pressurer system.
Claims (8)
1. motor car engine vacuum system, it is characterized in that, it by one group of construction bolt be fixed on cylinder cover of engine (2) above, vacuum system body (3) is comprised of upper shell (3-1) and lower shell body (3-2), described upper shell (3-1) and lower shell body (3-2) are connected to a cavity structure by the welding muscle, be provided with an interface tube (3-1-1) in the outside of upper shell (3-1), described interface tube (3-1-1) is connected with vacuum control valve (4), described vacuum control valve (4) is electronic three-way valve, one of them outlet is connected with EGR bypass final controlling element (5), and another outlet connects a three-way valve that is communicated with vacuum pump (6) and force aid system for braking changeable mechanism final controlling element (1).
2. a kind of motor car engine vacuum system according to claim 1 is characterized in that, is provided with three stiffening ribs (3-1-6) in the internal cavities of described upper shell (3-1).
3. a kind of motor car engine vacuum system according to claim 2, it is characterized in that, described upper shell (3-1) and lower shell body (3-2) are equipped with the welding muscle in both junctions, wherein upper shell welding muscle (3-1-7) and lower shell body welding muscle (3-2-2) are all preset the technique amount of interference, described upper shell welding muscle (3-1-7) width is two times of lower shell body welding muscle (3-2-2) width, also is provided with flash groove (3-2-4) in the both sides of lower shell body welding muscle (3-2-2).
4. a kind of motor car engine vacuum system according to claim 3, it is characterized in that, described vacuum control valve (4) is installed on the outer wall of vacuum system body (3), in the vacuum control valve installation position installation base is set, described installation base is the local groove structure (3-1-3) of expecting of going.
5. a kind of motor car engine vacuum system according to claim 3, it is characterized in that, described upper shell (3-1) and lower shell body (3-2) are respectively equipped with upper shell technique clamping stagnation groove (3-1-5) and lower shell body technique clamping stagnation groove (3-2-3) in the junction, the section configuration of described upper shell technique clamping stagnation groove (3-1-5) and lower shell body technique clamping stagnation groove (3-2-3) is right-angled trapezium, the outer side surface of upper shell technique clamping stagnation groove (3-1-5) and lower shell body technique clamping stagnation groove (3-2-3) is vertical surface, and inner side surface is the plane of inclination.
6. a kind of motor car engine vacuum system according to claim 3 is characterized in that described construction bolt is arranged in the both sides of vacuum system body (3), is provided with technique at the construction bolt periphery and dodges hole (3-1-4).
7. a kind of motor car engine vacuum system according to claim 3, it is characterized in that, described interface tube (3-1-1) is positioned at the front portion of upper shell (3-1), top at interface tube (3-1-1) is provided with the cover plate that is connected as a single entity with upper shell, and on the cover board face is offered long strip vent (3-1-2).
8. a kind of motor car engine vacuum system according to claim 3 is characterized in that, described lower shell body (3-2) bottom is concave surface arcuate structure (3-2-1), and this concave surface arcuate structure (3-2-1) mates with the end face of engine air cylinder cap (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203661106U CN202811116U (en) | 2012-07-27 | 2012-07-27 | Vacuum unit of automobile engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012203661106U CN202811116U (en) | 2012-07-27 | 2012-07-27 | Vacuum unit of automobile engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202811116U true CN202811116U (en) | 2013-03-20 |
Family
ID=47870004
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012203661106U Expired - Lifetime CN202811116U (en) | 2012-07-27 | 2012-07-27 | Vacuum unit of automobile engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202811116U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454252A (en) * | 2014-11-21 | 2015-03-25 | 无锡隆盛科技股份有限公司 | Vacuum actuator |
-
2012
- 2012-07-27 CN CN2012203661106U patent/CN202811116U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454252A (en) * | 2014-11-21 | 2015-03-25 | 无锡隆盛科技股份有限公司 | Vacuum actuator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130320 |