CN202325864U - Electronic throttle valve body for diesel engine - Google Patents
Electronic throttle valve body for diesel engine Download PDFInfo
- Publication number
- CN202325864U CN202325864U CN201120468155XU CN201120468155U CN202325864U CN 202325864 U CN202325864 U CN 202325864U CN 201120468155X U CN201120468155X U CN 201120468155XU CN 201120468155 U CN201120468155 U CN 201120468155U CN 202325864 U CN202325864 U CN 202325864U
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- assembly
- gear assembly
- throttle valve
- control circuit
- jack assemblies
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- Withdrawn - After Issue
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- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
The utility model discloses an electronic throttle valve body for a diesel engine. The electronic throttle body for the diesel engine comprises a body, a printed circuit board of a control circuit, a throttle valve piece, a limit block, bearings, a throttle valve shaft assembly, a magnet assembly, a socket assembly, a reset gear assembly, a direct current motor, a return spring and a dust-proof cover, wherein the printed circuit board of the control circuit is welded on the socket assembly, and the limit plate is injected on a throttle valve shaft to form the throttle valve shaft assembly; a reset gear is welded on the throttle valve shaft assembly, and the throttle valve shaft assembly is assembled on the throttle valve body through the bearings; and the throttle valve piece is inserted into the throttle valve shaft, and is connected with the throttle valve shaft by a screw. The direct current motor is pressed in the body through the socket assembly. The return spring is positioned below the reset gear assembly, one supporting leg at one end of the return spring is hung on the body, and the other supporting leg of the return spring is hung on the reset gear assembly. The electronic throttle valve body is not interfered by an outside magnetic field, the whole control system is closed in a cavity, and a protective cover is made of a metal plate with higher permeability, and can shield the electromagnetic interference of the outside.
Description
Technical field
The utility model relates to a kind of diesel engine, particularly a kind of electronic air throttle body of diesel engine.
Background technique
It is to continue variable air mass flow to motor that the diesel engine electric injection system adopts throttle body assembly, its effect, and the vibration when reducing air mass flow and avoid tail-off.For adapting to various operating modes or cooperating exhaust gas recirculation (EGR; Exhaust Gas Recirculation) work and different air mass flows is provided, realize rational air fuel ratio, make its sufficient burning; Reduce discharging, and improved engine power performance, Economy, travelling comfort.
The throttle body of use for diesel engine is the contact-type angular position sensor mostly at present, and its shortcoming is because the resistive film sensor accuracy that causes easy to wear reduces, thereby influences the control accuracy of throttle body.Existing throttle body axial limiting adopts metal limiting board etc. mostly, and is unidirectional spacing, and its shortcoming is easy to wear, and unidirectional spacing play is big, has reduced the life-span of throttle body.
Summary of the invention
The utility model technical issues that need to address have provided a kind of electronic air throttle body of diesel engine, are intended to solve the above problems.
In order to solve the problems of the technologies described above, the utility model is realized through following technological scheme:
The utility model comprises: the printed circuit board (PCB) of body, control circuit, throttle blade, clutch shaft bearing and second bearing, throttle plate pin assembly, magnet assemblies, full cut-off adjusting screw, reseting gear assembly, intermediate gear, direct current generator, Returnning spring, lock screw, capping, intermediate gear pin, conducting inserted sheet, first screw, with extraneous communicate by letter contact pin and jack assemblies;
Direct current generator is contained in behind the jack assemblies as an integral body packs in the body, and is locked at jack assemblies and sheet metal on the body with first screw, and between body and jack assemblies, uses second seal ring; On the printed circuit board (PCB) of control circuit and the jack assemblies and contact pin extraneous communication and the welding of conducting inserted sheet; Magnet assemblies is pressed on the throttle plate pin assembly; And the reseting gear assembly is welded on the throttle plate pin assembly, and the throttle plate pin assembly is connected with second bearing with clutch shaft bearing, and throttle blade is inserted on the throttle plate pin assembly; And with second screw lock on throttle plate pin, the printed circuit board (PCB) of control circuit is integrated, and sensor element places reseting gear assembly top;
The reseting gear assembly is injection molded into an integral body to inserts and reseting gear assembly through Shooting Technique; Be welded on then on the throttle plate pin assembly; The throttle plate pin assembly passes through in the intrinsic bearing clutch shaft bearing and second bearings; Realizing rolling connects, and reduces the frictional force of throttle plate pin when rotating; Resetting system is made up of reseting gear assembly, Returnning spring; Returnning spring is between reseting gear assembly and body; And turn round in the groove that arm is suspended to the reseting gear assembly for one; Another is turned round in the preformed groove that arm is suspended to body; Because the automatic driving reset gear assembly of twisting force of Returnning spring turns to default location, let the side of inserts one support arm on the reseting gear assembly contact with positive stop lug boss on the body, throttle blade is opened; When needs were closed, the reaction force that overcomes Returnning spring through the driving reset gear was to closed position, and interior inserts one support arm of reseting gear assembly this moment contacts with the head of full cut-off adjusting screw, stops operating; When direct current generator or control circuit broke down, closure can be got back to default location automatically under the effect of the torsion of Returnning spring;
Said reseting gear assembly is to be injected into limiting board through injection moulding to become as a whole on the throttle plate pin, and limiting board makes under the Returnning spring elastic force on the end face of limiting board near clutch shaft bearing between the bearing hole bottom of clutch shaft bearing end face and body;
Contact pin of communicating by letter and the welding of the printed circuit board (PCB) of control circuit with the external world; The conducting inserted sheet inserts in the hole of jack assemblies; And an end of two conducting inserted sheets is connected with two contact terminals of direct current generator respectively; Direct current generator is pressed in the hole of jack assemblies, packs in the body as an integral body, and is locked at jack assemblies on the body through two holes of metal platen and the hole of jack assemblies with first screw;
The printed circuit board (PCB) of control circuit place reseting gear assembly, jack assemblies and intermediate gear the top; The hole of the printed circuit board (PCB) correspondence that the contact pin of extraneous communication and conducting inserted sheet pass control circuit respectively, and connect with soldering; Use in printed circuit board the 3rd screw of control circuit is locked at respectively on body and the jack assemblies.
Compared with prior art, the beneficial effect of the utility model is: do not receive extraneous magnetic interference, and The whole control system is enclosed in the cavity; Because protecting cover is used permeability instead than higher sheet metal manufacturing, can shield extraneous electromagnetic interference again.
Description of drawings
Fig. 1 is the utility model one embodiment's a structural representation.
Fig. 2 is the structural representation of the utility model midship section.
Fig. 3 is the inner structural representation of throttle body in the utility model.
Fig. 4 is the printed circuit board (PCB) assembled construction schematic representation of control circuit in the utility model.
Fig. 5 is the structural representation of reseting gear in the utility model.
Fig. 6 is the structural representation of throttle plate pin in the utility model.
Fig. 7 is the structural representation of jack assemblies in the utility model.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is described in further detail:
Visible by Fig. 1-Fig. 7: the utility model comprises: the printed circuit board (PCB) 4 of body 14, control circuit, throttle blade 10, clutch shaft bearing 11 and second bearing 15, throttle plate pin assembly 8, magnet assemblies 5, full cut-off adjusting screw 13, reseting gear assembly 7, intermediate gear 19, direct current generator 20, Returnning spring 12, lock screw 3, capping 16, intermediate gear pin 17, conducting inserted sheet 18, first screw 21, communicate by letter with the external world contact pin 22 and jack assemblies 23; Direct current generator 20 is contained in jack assemblies 23 back and packs in the body as an integral body; And be locked at jack assemblies 23 and sheet metal 25 on the body with first screw 21; And between body 14 and jack assemblies 23, use second seal ring 24, prevent that extraneous liquid from getting into; On the printed circuit board (PCB) 4 of control circuit and the jack assemblies 23 and contact pin 22 and 18 welding of conducting inserted sheet extraneous communication; Magnet assemblies 5 is pressed on the throttle plate pin assembly 8, and reseting gear assembly 7 is welded on the throttle plate pin assembly 8, and throttle plate pin assembly 8 is connected with second bearing 15 with clutch shaft bearing 11; Throttle blade 10 is inserted on the throttle plate pin assembly 8; And be locked on the throttle plate pin 32 with second screw 9, the printed circuit board (PCB) of control circuit 4 is integrated, and sensor element places reseting gear assembly 7 tops, and reseting gear assembly 7 drives air throttle component 8 and rotates when rotating; Because magnet assemblies 5 is fitted on the throttle plate pin assembly 8; Magnet assemblies 5 is followed throttle plate pin assembly 8 and is rotated together, forms the magnetic field of a variation, makes its sensor sense the variation of magnetic intensity;
Reseting gear assembly 7 is injection molded into an integral body to inserts 26 and reseting gear assembly 7 through Shooting Technique; Be welded on then on the throttle plate pin assembly 8; Throttle plate pin assembly 8 is through supporting at the intrinsic bearing clutch shaft bearing 11 and second bearing 15; Realizing rolling connects, and reduces the frictional force of throttle plate pin when rotating; Resetting system is made up of reseting gear assembly 7, Returnning spring 12; Returnning spring 12 is between reseting gear assembly 7 and body 14; And turn round in the groove that arm is suspended to reseting gear assembly 7 for one; Another is turned round in the preformed groove that arm is suspended to body; Because the automatic driving reset gear assembly 7 of twisting force of Returnning spring 12 turns to default location, let the side of inserts 26 1 support arms on the reseting gear assembly 7 contact with positive stop lug boss 33 on the body 14, throttle blade is opened; When needs were closed, the reaction force that overcomes Returnning spring through the driving reset gear was to closed position, and this moment, reseting gear assembly 7 interior inserts 26 1 support arms contacted with the head of full cut-off adjusting screw 13, stopped operating; When direct current generator or control circuit broke down, closure can be got back to default location automatically under the effect of the torsion of Returnning spring;
Reseting gear assembly 7 is to be injected into limiting board 31 through injection moulding to become as a whole on the throttle plate pin 32; Limiting board 31 makes under Returnning spring 12 elastic force on the end face of limiting board 31 near clutch shaft bearing 11 between the bearing hole bottom of clutch shaft bearing 11 end faces and body 14;
The contact pin 22 of communicating by letter with the external 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 an 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, packs in the body 14 as an integral body, and is locked at jack assemblies on the body through two holes 30 of metal platen 25 and the hole 29 of jack assemblies with first screw 21; Because on the jack assemblies cylndrical surface that cooperates with body apertures is arranged, the cylndrical surface is provided with the inlet chamfering, in the process of packing into, has guaranteed the motor reliability of positioning.The contact pin port section that is connected with wire harness on the jack assemblies stretches out body after the assembling, leave enough spaces and be connected with the wire harness plug; In order to guarantee the sealing between socket and the body, socket and body filling second seal ring 24, prevent that extraneous oil, water etc. are in the seal chamber of socket and the printed circuit board (PCB) of body junction entering control circuit.
The printed circuit board (PCB) 4 of control circuit place reseting gear assembly 7, jack assemblies 23 and intermediate gear 19 the top; The contact pin 22 of the external world's communication in the jack assemblies passes the hole of printed circuit board (PCB) 4 correspondences of control circuit respectively with conducting inserted sheet 18 (two), and connects with soldering.Printed circuit board (PCB) 4 usefulness the 3rd screws 3 (4) of control circuit are locked at respectively on body and the jack assemblies.
Also comprise: a protective housing 1; Described protective housing 1 presses with body and is connected, and between has been filled first seal ring 2.
The positive progressive effect of the utility model is:
The compact structure of A, whole throttle body has reduced between the engine air that occupies.When other unit failure or working environment changed in motor, the throttle body, control circuit let throttle body get back to default location can for an instruction.If direct current generator or other control circuit break down, Returnning spring also can let the closure valve block get back to default location.
B, control circuit board are integrated single-chip microcomputer, H bridge circuit, position transducer and peripheral protective circuit etc.; Reduced operation with the position transducer welding; And it is simple in structure with contact pin to communicate by letter with the external world, no longer takes the particular curve design, is that the control circuit board welding space is bigger; Be easy to welding the frequency reduce to lose efficacy takes place, the welding stress of promptly having avoided above these factors to cause causes problems such as soldering point is insecure.
C, strengthened reliability and stability that motor is installed, simplified assembly process, this motor installation and design has changed in the past the mode with the positioning ring location, and has cancelled the wave washer that is used for the motor vibrationproof.The location that motor is installed on this throttle body compresses part---and socket adopts the engineering plastics manufacturing; Realize the shape and the status requirement of positioning hole and other matching hole with precise injection molding; Because embedded metal platen has increased intensity simultaneously in the plastics, has also strengthened toughness.Motor with screw lock after, the toughness of having utilized the metal platen distortion to produce makes the motor can carry the impulsive load of all directions fully.This design has not only solved the reliability of location, and has prevented the vibration that motor produces when being hit load, and has reduced the required part of assembling, has avoided neglected loading, has also shortened man-hour then.
D, resetting system are made up of reseting gear assembly and Returnning spring, throttle plate pin assembly; The design's characteristics are that the reseting gear assembly is welded on the throttle body assembly; The injecting hole interference fit of axle and reseting gear assembly during assembling, because the hole that cooperates with throttle plate pin on the gear assembly is injection molded with gear, precision is very high; So both guarantee the momentum that gear is jumped with respect to axle, and improved the process capability of making.And Placement in the past be axle directly be embedded in the gear the inserts laser bonding together; In order to guarantee the jerk value of reseting gear with respect to axle; Just must strictly control inserts and axle matching hole precision and matching hole and mold position precision etc.; Increase manufacture difficulty, and reduced quantity-produced stability.
E, axial limiting have adopted bidirectionally limited structure, and limiting board is to become as a whole through injection moulding with throttle plate pin, utilize the engineering plastics characteristic of limiting board; Increased wear resistance with bearing face; Returnning spring is pressure spring design, spring very big elastic force axially arranged, when throttle body is worked, make limiting board near bearing face; Reduce axial float, increased the life-span of throttle body.
The electronic air throttle body of the diesel engine of F, the utility model is integrated control circuit; Can drive valve block to appointed positions through reduction gear according to the position signal control direct current generator that the outside is given; Main three parts of this control circuit are formed: drive circuit, feeder loop and process chip; The feedback signal that process chip is received outside signal while pick-up transducers compares after the computing, and the drive motor of giving an order is to specified position, and whole process is closed loop control.And software programming adopts PID mathematical model framework effectively to solve the nonlinear problem of movement process, strengthened antijamming capability.
After the assembling of control mechanism is intact, in order to prevent interference and the infringement of external environment, added protective housing 1 in the above to control mechanism, protective housing 1 presses with body and is connected, and between has also been filled first seal ring 2.Because what the protective housing material adopted is the very high metallic material manufacturing of permeability, avoided the inner electronic unit of external electromagnetic wave interference then, improved the stability of control circuit operation.
The H bridge circuit that the printed circuit board (PCB) of control circuit mainly is made up of single-chip microcomputer, metal-oxide-semiconductor (Metal-oxide-semicondutor type field effect transistor), position transducer, resistance, electric capacity, power supply, inductance, triode etc. are formed.ECU (Electronic Control Unit; Electronic control unit) after signal is input to single-chip microcomputer; According to the signal feed back of position transducer through PID (Proportional-Integral-Derivative; Proportional-integral-differential) send the execution signal after the adjusting and give the H bridge, the running of H bridge control motor arrives ECU demand angle position, and entire circuit is closed loop control.
The working procedure of the utility model is following:
The electronic air throttle body of the diesel engine of the utility model carries Drive and Control Circuit; Can control the closure opening angle according to the given PWM of ECU (Pulse Width Modulation, PWM) signal, give throttle body when ECU sends signal; When the control circuit in the throttle body receives signal; And, compare analysis through process chip according to the feedback signal of position transducer, send then and carry out signal and drive direct current generator to drive circuit; Direct current generator slows down through intermediate gear, drives reseting gear and rotates.When throttle blade is followed the throttle plate pin rotation, change the area of throttle body passage, change the air mass flow of air inlet then.
The common default conditions of throttle body are standard-sized sheet, and the support arm on the inserts 26 in the reseting gear assembly is contacted with positive stop lug boss 33 on the body.Reseting gear assembly 7 is welded on the throttle plate pin 32, and when the reseting gear assembly rotated, the throttle plate pin assembly was also followed rotation.When if closure need be closed, control circuit control motor turns to full close position, and an arm of reseting gear assembly embedded component 26 is contacted with full cut-off adjusting screw 13.When the throttle body electronic circuit broke down, reseting gear can be got back to default location from what leave fully open position Anywhere under the active force of spring, guaranteed engine health property.
Claims (2)
1. the electronic air throttle body of a diesel engine is characterized in that comprising: the printed circuit board (PCB) of body, control circuit, throttle blade, clutch shaft bearing and second bearing, throttle plate pin assembly, magnet assemblies, full cut-off adjusting screw, reseting gear assembly, intermediate gear, direct current generator, Returnning spring, lock screw, capping, intermediate gear pin, conducting inserted sheet, first screw, with extraneous communicate by letter contact pin and jack assemblies;
Direct current generator is contained in behind the jack assemblies as an integral body packs in the body, and is locked at jack assemblies and sheet metal on the body with first screw, and between body and jack assemblies, uses second seal ring; On the printed circuit board (PCB) of control circuit and the jack assemblies and contact pin extraneous communication and the welding of conducting inserted sheet; Magnet assemblies is pressed on the throttle plate pin assembly; And the reseting gear assembly is welded on the throttle plate pin assembly, and the throttle plate pin assembly is connected with second bearing with clutch shaft bearing, and throttle blade is inserted on the throttle plate pin assembly; And with second screw lock on throttle plate pin, the printed circuit board (PCB) of control circuit is integrated, and sensor element places reseting gear assembly top;
The reseting gear assembly is injection molded into an integral body to inserts and reseting gear assembly through Shooting Technique; Be welded on then on the throttle plate pin assembly; The throttle plate pin assembly passes through in the intrinsic bearing clutch shaft bearing and second bearings; Realizing rolling connects, and reduces the frictional force of throttle plate pin when rotating; Resetting system is made up of reseting gear assembly, Returnning spring; Returnning spring is between reseting gear assembly and body; And turn round in the groove that arm is suspended to the reseting gear assembly for one; Another is turned round in the preformed groove that arm is suspended to body; Because the automatic driving reset gear assembly of twisting force of Returnning spring turns to default location, let the side of inserts one support arm on the reseting gear assembly contact with positive stop lug boss on the body, throttle blade is opened; When needs were closed, the reaction force that overcomes Returnning spring through the driving reset gear was to closed position, and interior inserts one support arm of reseting gear assembly this moment contacts with the head of full cut-off adjusting screw, stops operating; When direct current generator or control circuit broke down, closure can be got back to default location automatically under the effect of the torsion of Returnning spring;
Said reseting gear assembly is to be injected into limiting board through injection moulding to become as a whole on the throttle plate pin, and limiting board makes under the Returnning spring elastic force on the end face of limiting board near clutch shaft bearing between the bearing hole bottom of clutch shaft bearing end face and body;
Contact pin of communicating by letter and the welding of the printed circuit board (PCB) of control circuit with the external world; The conducting inserted sheet inserts in the hole of jack assemblies; And an end of two conducting inserted sheets is connected with two contact terminals of direct current generator respectively; Direct current generator is pressed in the hole of jack assemblies, packs in the body as an integral body, and is locked at jack assemblies on the body through two holes of metal platen and the hole of jack assemblies with first screw;
The printed circuit board (PCB) of control circuit place reseting gear assembly, jack assemblies and intermediate gear the top; The hole of the printed circuit board (PCB) correspondence that the contact pin of extraneous communication and conducting inserted sheet pass control circuit respectively, and connect with soldering; Use in printed circuit board the 3rd screw of control circuit is locked at respectively on body and the jack assemblies.
2. the electronic air throttle body of diesel engine according to claim 1 is characterized in that: also comprise: a protective housing; Described protective housing presses with body and is connected, and between has been filled first seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120468155XU CN202325864U (en) | 2011-11-21 | 2011-11-21 | Electronic throttle valve body for diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120468155XU CN202325864U (en) | 2011-11-21 | 2011-11-21 | Electronic throttle valve body for diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202325864U true CN202325864U (en) | 2012-07-11 |
Family
ID=46437847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120468155XU Withdrawn - After Issue CN202325864U (en) | 2011-11-21 | 2011-11-21 | Electronic throttle valve body for diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202325864U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562325A (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 of diesel engine |
| CN106659037A (en) * | 2016-11-03 | 2017-05-10 | 昆山隆中麦士格瑞汽车部件有限公司 | Control circuit board mounting structure of electronic throttle |
-
2011
- 2011-11-21 CN CN201120468155XU patent/CN202325864U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102562325A (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 of diesel engine |
| CN102562325B (en) * | 2011-11-21 | 2016-07-20 | 上海奥众汽车部件制造有限公司 | The electronic air throttle body of diesel engine |
| CN106659037A (en) * | 2016-11-03 | 2017-05-10 | 昆山隆中麦士格瑞汽车部件有限公司 | Control circuit board mounting structure of electronic throttle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20120711 Effective date of abandoning: 20160720 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |