CN102562325B - The electronic air throttle body of diesel engine - Google Patents
The electronic air throttle body of diesel engine Download PDFInfo
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- CN102562325B CN102562325B CN201110372055.1A CN201110372055A CN102562325B CN 102562325 B CN102562325 B CN 102562325B CN 201110372055 A CN201110372055 A CN 201110372055A CN 102562325 B CN102562325 B CN 102562325B
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- throttle
- reseting gear
- assembly
- gear assembly
- jack assemblies
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- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The invention discloses the electronic air throttle body of a kind of diesel engine, including body, the printed circuit board (PCB) of control circuit, throttle blade, limited block, bearing, throttle plate pin assembly, magnet assemblies, jack assemblies, reseting gear assembly, direct current generator, back-moving spring and dust cap, the printed circuit board (PCB) of control circuit is welded on jack assemblies, limiting plate is injection-moulded in throttle plate pin composition throttle plate pin assembly, reseting gear is welded on throttle plate pin assembly, throttle plate pin assembly is assemblied on throttle body by bearing, throttle blade is inserted in throttle plate pin, and uses screw attachment.Direct current generator is fitted in internal by jack assemblies.Back-moving spring is positioned at reseting gear assembly and lower section, and one end leg hangs on body, and another leg hangs on reseting gear assembly.The present invention is not by extraneous magnetic interference, and whole control system lock is in a cavity, and the metallic plate manufacture that pcrmeability is higher used instead by protective cover, it is possible to the electromagnetic interference that shielding is extraneous.
Description
Technical field
The present invention relates to a kind of diesel engine, particularly to the electronic air throttle body of a kind of diesel engine.
Background technology
Diesel engine electric injection system adopts throttle body assembly, and its effect is the air mass flow variable to engine continuous, and avoids vibration during tail-off by minimizing air mass flow.For adapting to various operating mode or coordinating waste gas recirculation (EGR, ExhaustGasRecirculation) work and different air mass flow is provided, it is achieved reasonably air-fuel ratio so that it is burn fully, emissions-reducing, and improve engine power performance, economy, comfortableness.
The throttle body of diesel engines at present is contact angular position sensor mostly, and its shortcoming is to cause that sensor accuracy reduces owing to resistive film is easy to wear, thus affecting the control accuracy of throttle body.Existing throttle body axial limiting adopts metal spacing plate etc. mostly, and is unidirectional spacing, and its shortcoming is easy to wear, and unidirectional spacing play is big, reduces the life-span of throttle body.
Summary of the invention
The technical issues that need to address of the present invention there is provided the electronic air throttle body of a kind of diesel engine, it is intended to solves above-mentioned problem.
In order to solve above-mentioned technical problem, the present invention is achieved by the following technical solutions:
The present invention includes: body, the printed circuit board (PCB) of control circuit, throttle blade, clutch shaft bearing and the second bearing, throttle plate pin assembly, magnet assemblies, fully closed adjustment screw, reseting gear assembly, idler gear, direct current generator, back-moving spring, lock-screw, capping, idler gear pin, conducting inserted sheet, the first screw, communication with the outside world contact pin and jack assemblies；
Direct current generator loads in body as an entirety after being contained in jack assemblies, and with the first screw, jack assemblies and metallic plate is locked on body, and uses the second sealing ring between body and jack assemblies；The printed circuit board (PCB) of control circuit welds with the contact pin with extraneous communication on jack assemblies and conducting inserted sheet, magnet assemblies is pressed on throttle plate pin assembly, and reseting gear components welding is on throttle plate pin assembly, throttle plate pin assembly is connected with clutch shaft bearing and the second bearing, throttle blade is inserted on throttle plate pin assembly, and by the second screw lock on throttle plate pin, the printed circuit board (PCB) of control circuit is integrated with sensor element and is placed in above reseting gear assembly；
Reseting gear assembly is injection molded into an entirety by Shooting Technique inserts and reseting gear assembly, then it is welded on throttle plate pin assembly, throttle plate pin assembly is by intrinsic bearing clutch shaft bearing and the second bearings, it is achieved rolls and connects, and reduces the throttle plate pin frictional force when rotating；Reset system is made up of reseting gear assembly, back-moving spring；Back-moving spring is between reseting gear assembly and body, and a torque arm is suspended in the groove of reseting gear assembly, another torque arm is suspended in the preformed groove of body, owing to the twisting force of back-moving spring drives reseting gear assembly to turn to default location automatically, the side allowing inserts one support arm on reseting gear assembly contacts with the positive stop lug boss on body, and throttle valve sheet is opened；When needs are closed, by driving reseting gear to overcome the counteracting force of back-moving spring to closed position, now inserts one support arm in reseting gear assembly and the head contact of fully closed adjustment screw, stop operating；When direct current generator or control circuit break down, air throttle can automatically return to default location under the effect of the torsion of back-moving spring；
Described reseting gear assembly is by injection moulding, limiting plate to be injected on throttle plate pin to become as a whole, limiting plate bottom the dead eye of clutch shaft bearing end face and body between, make limiting plate on the end face of clutch shaft bearing under back-moving spring elastic force；
The contact pin of communication with the outside world welds with the printed circuit board (PCB) of control circuit, conducting inserted sheet inserts in the hole of jack assemblies, and one end of two conducting inserted sheets is connected with two contact terminals of direct current generator respectively, in the hole of direct current generator press-in jack assemblies, load in body as an entirety, and by the holes of metal platen and the hole of jack assemblies, jack assemblies is locked on body with the first screw；
The printed circuit board (PCB) of control circuit be placed in reseting gear assembly, jack assemblies and idler gear top；The contact pin of extraneous communication and turn on inserted sheet and be each passed through the hole that the printed circuit board (PCB) of control circuit is corresponding, and connect with soldering；Use in printed circuit board the 3rd screw of control circuit is locked on body and jack assemblies respectively.
Compared with prior art, the invention has the beneficial effects as follows: not by extraneous magnetic interference, and whole control system lock is in a cavity；Again owing to protective cover uses the metallic plate manufacture that pcrmeability is higher instead, it is possible to the electromagnetic interference that shielding is extraneous.
Accompanying drawing explanation
Fig. 1 is the structural representation of one embodiment of the invention.
Fig. 2 is the structural representation of midship section of the present invention.
Fig. 3 is the structural representation in the present invention within throttle body.
Fig. 4 is the structural representation of the printed circuit board (PCB) assembling of control circuit in the present invention.
Fig. 5 is the structural representation of reseting gear in the present invention.
Fig. 6 is the structural representation of throttle plate pin in the present invention.
Fig. 7 is the structural representation of jack assemblies in the present invention.
Detailed description of the invention
Below in conjunction with accompanying drawing and detailed description of the invention, the present invention is described in further detail:
From Fig. 1-Fig. 7: the present invention includes: body 14, the printed circuit board (PCB) 4 of control circuit, throttle blade 10, clutch shaft bearing 11 and the second bearing 15, throttle plate pin assembly 8, magnet assemblies 5, fully closed adjustment screw 13, reseting gear assembly 7, idler gear 19, direct current generator 20, back-moving spring 12, lock-screw 3, capping 16, idler gear pin 17, conducting inserted sheet the 18, first screw 21, communication with the outside world contact pin 22 and jack assemblies 23；Direct current generator 20 loads in body as an entirety after being contained in jack assemblies 23, and is locked on body with 21 jack assemblies 23 of the first screw and metallic plate 25, and uses the second sealing ring 24 between body 14 and jack assemblies 23, it is prevented that environmental liquids enters；The printed circuit board (PCB) 4 of control circuit welds with the contact pin 22 with extraneous communication on jack assemblies 23 and conducting inserted sheet 18, magnet assemblies 5 is pressed on throttle plate pin assembly 8, and reseting gear assembly 7 is welded on throttle plate pin assembly 8, throttle plate pin assembly 8 is connected with clutch shaft bearing 11 and the second bearing 15, throttle blade 10 is inserted on throttle plate pin assembly 8, and it is locked on throttle plate pin 32 with the second screw 9, the printed circuit board (PCB) 4 of control circuit is integrated with sensor element and is placed in above reseting gear assembly 7, air throttle component 8 is driven to rotate when reseting gear assembly 7 rotates, owing to magnet assemblies 5 is fitted on throttle plate pin assembly 8, magnet assemblies 5 is followed throttle plate pin assembly 8 and is rotated together, form the magnetic field of a change, make its sensor to sense the change of magnetic field intensity；
Reseting gear assembly 7 is injection molded into an entirety by Shooting Technique inserts 26 and reseting gear assembly 7, then it is welded on throttle plate pin assembly 8, throttle plate pin assembly 8 is by supporting at intrinsic bearing clutch shaft bearing 11 and the second bearing 15, realize rolling and connect, reduce the throttle plate pin frictional force when rotating；Reset system is made up of reseting gear assembly 7, back-moving spring 12；Back-moving spring 12 is between reseting gear assembly 7 and body 14, and a torque arm is suspended in the groove of reseting gear assembly 7, another torque arm is suspended in the preformed groove of body, owing to the twisting force of back-moving spring 12 drives reseting gear assembly 7 to turn to default location automatically, allowing the side of inserts 26 1 support arm on reseting gear assembly 7 contact with the positive stop lug boss 33 on body 14, throttle valve sheet is opened；When needs are closed, by driving reseting gear to overcome the counteracting force of back-moving spring to closed position, now inserts 26 1 support arm in reseting gear assembly 7 and the head contact of fully closed adjustment screw 13, stop operating；When direct current generator or control circuit break down, air throttle can automatically return to default location under the effect of the torsion of back-moving spring；
Reseting gear assembly 7 is by injection moulding, limiting plate 31 to be injected on throttle plate pin 32 to become as a whole, limiting plate 31 bottom the dead eye of clutch shaft bearing 11 end face and body 14 between, make limiting plate 31 on the end face of clutch shaft bearing 11 under back-moving spring 12 elastic force；
The contact pin 22 of communication with the outside world welds with the printed circuit board (PCB) of control circuit, conducting inserted sheet 18 inserts in the hole 28 of jack assemblies 23, and one end of two conducting inserted sheets is connected with two contact terminals of direct current generator respectively, direct current generator 20 is pressed in the hole 27 of jack assemblies 23, load in body 14 as entirety, and be locked on body with 29, the hole jack assemblies of first screw 21 holes 30 by metal platen 25 and jack assemblies；Owing to there being the face of cylinder coordinated with body apertures on jack assemblies, the face of cylinder is provided with entrance chamfering, in the process loaded, it is ensured that motor reliability of positioning.The contact pin port section being connected with wire harness on jack assemblies, stretches out body after assembling, leave enough spaces and be connected with harness connector plug；In order to ensure the sealing between socket and body, it is filled with the second sealing ring 24 at socket and body, it is prevented that the oil in the external world, water etc. enter from socket with body junction in the annular seal space body of the printed circuit board (PCB) of control circuit.
The printed circuit board (PCB) 4 of control circuit be placed in reseting gear assembly 7, jack assemblies 23 and idler gear 19 top；The contact pin 22 of the extraneous communication in jack assemblies and conducting inserted sheet 18 (two) are each passed through the hole of printed circuit board (PCB) 4 correspondence of control circuit, and connect with soldering.The printed circuit board (PCB) 4 of control circuit is locked on body and jack assemblies respectively with the 3rd screw 3 (4).
Also include: a protective cover 1；Described protective cover 1 presses with body and is connected, and is filled with the first sealing ring 2 between.
The actively progressive effect of the present invention is in that:
A, whole throttle body compact conformation, decrease between the engine air occupied.When in electromotor, throttle body, other unit failure or working environment change, control circuit allow throttle body return to default location can to an instruction.If direct current generator or other control circuit break down, back-moving spring can also allow air throttle valve block return to default location.
B, control circuit plate are integrated with single-chip microcomputer, H-bridge circuit, position sensor and peripheral protection circuit etc.; decrease the operation welded with position sensor; and communication with the outside world contact pin structure is simple; particular curve is no longer taked to design; it is in that control circuit plate welding space is bigger; it is prone to welding reduce to lose efficacy the frequency occurs, namely avoids the problems such as the welding stress that the above factor causes causes pad insecure.
C, the reliability enhancing motor installation and stability, simplify assembly process, and this motor mounting design changes the mode in the past positioned with centring ring, and eliminates the wave washer for motor vibrationproof.The positioning compression part socket that on this throttle body, motor is installed adopts engineering plastics manufacture, realizes hole, location and the shape of other mating holes and status requirement with precise injection molding, owing to metal platen embedded in plastics adds intensity simultaneously, also enhances toughness.After motor screw lock, the toughness that metal platen deformation produces is make use of to make motor be entirely capable of the shock loading of carrying all directions.This design not only solves the reliability of location, and prevent motor be hit load time the vibration that produces, and decrease the required part of assembling, it is to avoid neglected loading, then also shorten man-hour.
D, reset system are made up of reseting gear assembly and back-moving spring, throttle plate pin assembly, the design is characterized as being reseting gear components welding on throttle body assembly, the injecting hole interference fit of axle and reseting gear assembly during assembling, hole owing to coordinating with throttle plate pin on gear assembly is injection molded together with gear, precision is significantly high, so both ensure that the momentum that gear is jumped relative to axle, and improve the process capability of manufacture.And conventional connected mode is that axle is directly together with the inserts laser weld being embedded in gear, in order to ensure the reseting gear jerk value relative to axle, it is necessary for strictly controlling inserts and axle mating holes precision and mating holes and mould positioning precision etc., add manufacture difficulty, and reduce quantity-produced stability.
E, axial limiting have employed bidirectionally limited structure, and limiting plate is to become as a whole by injection moulding with throttle plate pin, utilize the engineering plastics characteristic of limiting plate, add the wearability with bearing face, back-moving spring is compression spring design, axially has very big elastic force at spring, makes limiting plate against bearing face when throttle body works, reduce axial float, add the life-span of throttle body.
F, the present invention the electronic air throttle body of diesel engine be integrated with control circuit, can control direct current generator according to the position signalling that outside is given drives valve block to the position specified by reduction gearing, the main three part compositions of this control circuit: drive circuit, feedback circuit and process chip, process chip to receive the signal of outside and gather after the feedback signal of sensor compares computing simultaneously, sending order drive motor to specifying position, whole process is closed loop control.And software programming adopts PID mathematical model framework effectively to solve the nonlinear problem of motor process, enhances capacity of resisting disturbance.
After the assembling of controlling organization is complete, in order to prevent external environment to the interference of controlling organization and infringement, having added protective cover 1 in the above, protective cover 1 presses with body and is connected, and is also filled with the first sealing ring 2 between.What adopt due to protective cover material is the significantly high metal material manufacture of permeability, then avoids electronic unit Electromagnetic Interference within the external world, improves the stability of control circuit operation.
H-bridge circuit that the printed circuit board (PCB) of control circuit is mainly made up of single-chip microcomputer, metal-oxide-semiconductor (Metal-oxide-semicondutor type field effect transistor), position sensor, resistance, electric capacity, power supply, inductance, audion etc. form.ECU (ElectronicControlUnit, electronic control unit) after signal is input to single-chip microcomputer, signal according to position sensor feeds back through PID (Proportional-Integral-Derivative, proportional-integral-differential) regulate after send execution signal to H bridge, H bridge controls the operating of motor and arrives ECU demand angle position, and whole circuit is closed loop control.
The work process of the present invention is as follows:
The electronic air throttle body of the diesel engine of the present invention carries driving control circuit, can according to PWM (PulseWidthModulation given for ECU, pulsewidth modulation) signal controls throttle angle degree, when ECU sends a signal to throttle body, when control circuit in throttle body receives signal, and the feedback signal according to position sensor, analysis is compared through processing chip, then send execution signal and drive direct current generator to drive circuit, direct current generator is slowed down by idler gear, drives reseting gear to rotate.When throttle blade follows throttle plate pin rotation, the area of change throttle body passage, then change the air mass flow of air inlet.
The usual default conditions of throttle body are standard-sized sheet, make the support arm on the inserts 26 in reseting gear assembly contact with the positive stop lug boss 33 on body under the twisting force of back-moving spring.Reseting gear assembly 7 is welded on throttle plate pin 32, and when reseting gear assembly rotates, rotation also followed by throttle plate pin assembly.If air throttle needs to close, control circuit controls electric machine rotation to full close position, makes an arm of reseting gear assembly embedded component 26 contact with fully closed adjustment screw 13.When throttle body electronic circuit breaks down, reseting gear is under the force of a spring, it is possible to return to default location Anywhere from what leave fully open position, it is ensured that engine health.
Claims (2)
1. the electronic air throttle body of a diesel engine, it is characterised in that including: body, the printed circuit board (PCB) of control circuit, throttle blade, clutch shaft bearing and the second bearing, throttle plate pin assembly, magnet assemblies, fully closed adjustment screw, reseting gear assembly, idler gear, direct current generator, back-moving spring, lock-screw, capping, idler gear pin, conducting inserted sheet, the first screw, communication with the outside world contact pin and jack assemblies；
Direct current generator loads in body as an entirety after being contained in jack assemblies, and with the first screw, jack assemblies and metallic plate is locked on body, and uses the second sealing ring between body and jack assemblies；The printed circuit board (PCB) of control circuit welds with the contact pin with extraneous communication on jack assemblies and conducting inserted sheet, magnet assemblies is pressed on throttle plate pin assembly, and reseting gear components welding is on throttle plate pin assembly, throttle plate pin assembly is connected with clutch shaft bearing and the second bearing, throttle blade is inserted on throttle plate pin assembly, and by the second screw lock on throttle plate pin, the printed circuit board (PCB) of control circuit is integrated with sensor element and is placed in above reseting gear assembly；
Reseting gear assembly is injection molded into an entirety by Shooting Technique inserts and reseting gear assembly, then it is welded on throttle plate pin assembly, throttle plate pin assembly is by intrinsic bearing clutch shaft bearing and the second bearings, it is achieved rolls and connects, and reduces the throttle plate pin frictional force when rotating；Reset system is made up of reseting gear assembly, back-moving spring；Back-moving spring is between reseting gear assembly and body, and a torque arm is suspended in the groove of reseting gear assembly, another torque arm is suspended in the preformed groove of body, owing to the twisting force of back-moving spring drives reseting gear assembly to turn to default location automatically, the side allowing inserts one support arm on reseting gear assembly contacts with the positive stop lug boss on body, and throttle valve sheet is opened；When needs are closed, by driving reseting gear to overcome the counteracting force of back-moving spring to closed position, now inserts one support arm in reseting gear assembly and the head contact of fully closed adjustment screw, stop operating；When direct current generator or control circuit break down, air throttle can automatically return to default location under the effect of the torsion of back-moving spring；
Described reseting gear assembly is by injection moulding, limiting plate to be injected on throttle plate pin to become as a whole, limiting plate bottom the dead eye of clutch shaft bearing end face and body between, make limiting plate on the end face of clutch shaft bearing under back-moving spring elastic force；
The contact pin of communication with the outside world welds with the printed circuit board (PCB) of control circuit, conducting inserted sheet inserts in the hole of jack assemblies, and one end of two conducting inserted sheets is connected with two contact terminals of direct current generator respectively, in the hole of direct current generator press-in jack assemblies, load in body as an entirety, and by the holes of metal platen and the hole of jack assemblies, jack assemblies is locked on body with the first screw；
The printed circuit board (PCB) of control circuit is placed in the top of reseting gear assembly, jack assemblies and idler gear；The contact pin of extraneous communication and turn on inserted sheet and be each passed through the hole that the printed circuit board (PCB) of control circuit is corresponding, and connect with soldering；Use in printed circuit board the 3rd screw of control circuit is locked on body and jack assemblies respectively.
2. the electronic air throttle body of diesel engine according to claim 1, it is characterised in that: also include: a protective cover；Described protective cover presses with body and is connected, and is filled with the first sealing ring between.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110372055.1A CN102562325B (en) | 2011-11-21 | 2011-11-21 | The electronic air throttle body of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110372055.1A CN102562325B (en) | 2011-11-21 | 2011-11-21 | The electronic air throttle body of diesel engine |
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| Publication Number | Publication Date |
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| CN102562325A CN102562325A (en) | 2012-07-11 |
| CN102562325B true CN102562325B (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201110372055.1A Active CN102562325B (en) | 2011-11-21 | 2011-11-21 | The electronic air throttle body of diesel engine |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104454177A (en) * | 2014-12-15 | 2015-03-25 | 无锡隆盛科技股份有限公司 | Throttle valve driven by direct-current motor |
| CN106382162A (en) * | 2015-07-30 | 2017-02-08 | 上海奥众汽车部件制造有限公司 | Electronic throttle body |
| CN106762162B (en) * | 2015-11-19 | 2020-01-21 | 大陆汽车电子(芜湖)有限公司 | Throttle valve with axial positioning structure and method for adjusting axial clearance of throttle valve shaft |
| CN105351102B (en) * | 2015-12-04 | 2018-03-06 | 无锡隆盛科技股份有限公司 | Diesel engine electronic throttle |
| CN107676184A (en) * | 2016-08-02 | 2018-02-09 | 大陆汽车电子(芜湖)有限公司 | The encapsulating method of air throttle and its axis hole |
| IT201800006825A1 (en) * | 2018-06-29 | 2019-12-29 | ACTUATOR EQUIPPED WITH AN ELECTROMAGNETIC FIELD SHIELDING DEVICE FOR MAGNETIC OR MAGNETO-RESISTIVE POSITION SENSORS. | |
| CN109611219B (en) * | 2019-01-15 | 2023-12-15 | 上海奥众汽车部件制造有限公司 | Reset mechanism for electronic throttle body |
| WO2021003606A1 (en) * | 2019-07-05 | 2021-01-14 | 华益机电有限公司 | Throttle for electronic fuel injection |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128090A (en) * | 2010-01-19 | 2011-07-20 | 上海奥众汽车部件制造有限公司 | Electronic throttle valve body for diesel engine |
| CN202325864U (en) * | 2011-11-21 | 2012-07-11 | 上海奥众汽车部件制造有限公司 | Electronic throttle valve body for diesel engine |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4055547B2 (en) * | 2002-10-25 | 2008-03-05 | 株式会社デンソー | Electronically controlled throttle control device |
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2011
- 2011-11-21 CN CN201110372055.1A patent/CN102562325B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128090A (en) * | 2010-01-19 | 2011-07-20 | 上海奥众汽车部件制造有限公司 | Electronic throttle valve body for diesel engine |
| CN202325864U (en) * | 2011-11-21 | 2012-07-11 | 上海奥众汽车部件制造有限公司 | Electronic throttle valve body for diesel engine |
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| CN102562325A (en) | 2012-07-11 |
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