CN2602183Y - Knocking sensor for electronic control injection car engine - Google Patents
Knocking sensor for electronic control injection car engine Download PDFInfo
- Publication number
- CN2602183Y CN2602183Y CN 02293803 CN02293803U CN2602183Y CN 2602183 Y CN2602183 Y CN 2602183Y CN 02293803 CN02293803 CN 02293803 CN 02293803 U CN02293803 U CN 02293803U CN 2602183 Y CN2602183 Y CN 2602183Y
- Authority
- CN
- China
- Prior art keywords
- piezoelectric ceramic
- washer
- utility
- model
- electrodes
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Landscapes
- Fuel-Injection Apparatus (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
- Measurement Of Mechanical Vibrations Or Ultrasonic Waves (AREA)
Abstract
The utility model provides a knock sensor used for a D-EFI automobile engine, comprising a shell and two electrodes, and is characterized in that an additional hollow bolt is arranged additionally, on which an insulating washer, a pole piece, a piezoelectric ceramic chip, a pole piece, an insulating washer, a snap washer and a dish-shaped gasket are sleeved in sequence. At the end of the knock sensor, a nut is arranged and fixed matching a screw thread of the hollow bolt. The two electrodes are correspondingly connected and fixed with the electrodes on both sides of the piezoelectric ceramic chip, and finally a shell is fixed by an injection moulding using resin adhesive. The technology utilizes piezoelectric ceramic materials to sense the vibration times of a motor cylinder block, uses the electro-mechanical transformation effect of the piezoelectric ceramics to output the pressure signal exerted on the piezoelectric ceramic chip to the motor ECU in the mode of voltage signals, and then ECU can control the earlier or later time of ignition, thereby preventing the phenomenon of detonation from happening. The utility model can be applied to the automobile D-EFI system to monitor the consistency of the igniting time. The utility model can maximize the output power of the motor, and prevent the phenomenon of detonation from happening as well. The utility model is reliable to use, reasonable in structure and optimal in manufacturing cost.
Description
Affiliated technical field
The utility model relates to a kind of automobile electronic fuel oil jet system sensor of firing time of monitoring, and specifically is the quick-fried vibration sensor of automotive electric injection engine.
Background technique
The required surplus of ignition system of no pinking control is big, but excessive surplus can be because of the evening of lighting a fire, the power of motor is reduced, fuel consumption increases.Petrol engine is to utilize spark plug sparking that mixed gas is lighted flame continuous propagation in the firing chamber to burn, if unusual the rising appears in flame inner pressure of air cylinder in propagation process, the mixed gas at some positions does not wait flame to pass to just instancy of ignition explosive combustion, i.e. knocking combustion voluntarily.One of main harm of knocking combustion is that noise is big, if it two is continue to produce pinking in the engine working process, sparking-plug electrode or piston just can produce phenomenons such as overheated melting loss, cause serious mechanical deterioration, knocking combustion also can bring the decline of motor power and Economy, therefore must prevent the generation of engine knock.
The model utility content
The purpose of this utility model provides and a kind ofly can overcome above-mentioned defective, the size by detecting the pinking energy and then guarantee the quick-fried vibration sensor of automotive electric injection engine that can make motor send peak output, can avoid pinking to produce again.Its technology contents is:
Comprise housing and two electrodes, it is characterized in that: set up hollow bolt, be set with insulating washer, electrode slices, piezoelectric ceramic wafer, electrode slices, insulating washer, open washer, saucer washer on it successively, the end is equipped with nut and the hollow bolt screw thread is fixed, two electrode pairs should be fixedlyed connected with the electrode slices of piezoelectric ceramic wafer both sides, are fixed into housing with the resin glue injection moulding at last.
The quick-fried vibration sensor of described automotive electric injection engine, piezoelectric ceramic wafer adopt has high sensitivity high-curie temperature ternary system piezoelectric ceramics wafer.
The quick-fried vibration sensor of described automotive electric injection engine, saucer washer and nut are fixed with resin glue.
The quick-fried vibration sensor of described automotive electric injection engine, housing is provided with the electrode slot at the electrode place, sets up terminal pin and the electrode slot closely cooperates.
Its working principle is: present technique adopts ternary system high sensitivity, high-curie temperature piezoelectric ceramic material to come the vibration number of induction generator cylinder block, utilize the dynamo-electric transition effects of piezoelectric constant, the pressure signal that is added on the piezoelectric ceramic wafer is exported in the mode of voltage signal.When pinking takes place when, there is resonance phenomenon to produce, by piezoelectric ceramic wafer the pressure signal of responding to is converted to electrical signal and passes to Engine ECU, prevent the generation of phenomenon of detonation then by the ECU control ignition morning and evening constantly.The utility model is used for automobile electronic fuel oil jet system, and the conformity of monitoring firing time can make motor send peak output, can avoid the generation of pinking again, uses reliably, and this is rational in infrastructure, manufacture cost the best.
Description of drawings
Fig. 1 is the utility model embodiment's a structural representation;
Fig. 2 is the structural representation that the utility model is provided with terminal pin.
Embodiment
1, hollow bolt 2,6 insulating washers 3,5 electrode slicess 4, piezoelectric ceramic wafer 7, open washer 8, saucer washer 9, nut 10, housing 11, fixed block 12, pedestal 13, electrode 14, electrode slot 15, terminal pin
In the embodiment shown in fig. 1: be set with insulating washer 2 on the hollow bolt 1 successively, electrode slices 3, piezoelectric ceramic wafer 4, electrode slices 5, insulating washer 6, open washer 7 and saucer washer 8, its end is equipped with nut 9 and fixes with hollow bolt 1 screw thread, piezoelectric ceramic wafer 4 adopts has high sensitivity high-curie temperature ternary system piezoelectric ceramics wafer, the corresponding electrode slices 3 with piezoelectric ceramic wafer 4 both sides of two extraction electrodes 13,5 is fixedly connected, be fixed into housing 10 with the resin glue injection moulding at last, fixed block 11 is fixed on quick-fried vibration sensor on the pedestal 12 of cylinder body with hollow bolt 1 screw-thread fit.
In embodiment shown in Figure 2 substantially with embodiment shown in Figure 1: just at electrode 13, housing 10 is provided with electrode slot 14, sets up terminal pin 15 and closely cooperates with it, electrical signal is drawn pass to Engine ECU.
During use, quick-fried vibration sensor is contained on the cylinder body of motor, and when cylinder body vibrated, balancing weight was that open washer 7 is added to vibration pressure on the piezoelectric ceramic wafer 4.When the power of pressurization or draw direction is added on the piezoelectric ceramic wafer 4, there is voltage to produce, and the polarity of voltage that produces of pressurization is opposite with the polarity of voltage that produces of stretching, and the vibration number of the engine cylinder of the eigentone of just accomplishing quick-fried vibration sensor self when design during with the generation pinking is roughly the same.Like this, when pinking takes place when, there is resonance phenomenon to produce, the pressure that is added on the piezoelectric ceramic wafer 4 is strong, the output voltage of sensor also increases, and like this by detecting the size of pinking energy, and is converted into electrical signal and passes to Engine ECU, prevent the generation of phenomenon of detonation then by the ECU control ignition morning and evening constantly, just can guarantee the generation that makes motor send peak output and avoid pinking.The utility model is used for automobile electronic fuel oil jet system, monitors the conformity of firing time and uses reliably, and this is rational in infrastructure, manufacture cost the best.
Claims (4)
1, the quick-fried vibration sensor of a kind of automotive electric injection engine, comprise housing (10) and two electrodes (13), it is characterized in that: set up hollow bolt (1), be set with insulating washer (2), electrode slices (3), piezoelectric ceramic wafer (4), electrode slices (5), insulating washer (6), open washer (7), saucer washer (8) on it successively, the end is equipped with nut (9) and fixes with hollow bolt (1) screw thread, two electrodes (13) are corresponding fixedlys connected with electrode slices (3), (5) of piezoelectric ceramic wafer (4) both sides, is fixed into housing (10) with the resin glue injection moulding at last.
2, the quick-fried vibration sensor of automotive electric injection engine as claimed in claim 1 is characterized in that: piezoelectric ceramic wafer (4) adopts has high sensitivity high-curie temperature ternary system piezoelectric ceramics wafer.
3, the quick-fried vibration sensor of automotive electric injection engine as claimed in claim 1 is characterized in that: saucer washer (8) is fixedlyed connected with resin glue with nut (9).
4, the quick-fried vibration sensor of automotive electric injection engine as claimed in claim 1 is characterized in that: housing (10) locates to be provided with electrode slot (14) at electrode (13), sets up terminal pin (15) and closely cooperates with electrode slot (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02293803 CN2602183Y (en) | 2002-12-29 | 2002-12-29 | Knocking sensor for electronic control injection car engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 02293803 CN2602183Y (en) | 2002-12-29 | 2002-12-29 | Knocking sensor for electronic control injection car engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2602183Y true CN2602183Y (en) | 2004-02-04 |
Family
ID=34151864
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 02293803 Expired - Fee Related CN2602183Y (en) | 2002-12-29 | 2002-12-29 | Knocking sensor for electronic control injection car engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2602183Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019152538A (en) * | 2018-03-02 | 2019-09-12 | 大成建設株式会社 | Fastening bolt fastening torque specifying device and fastening torque specifying method |
-
2002
- 2002-12-29 CN CN 02293803 patent/CN2602183Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2019152538A (en) * | 2018-03-02 | 2019-09-12 | 大成建設株式会社 | Fastening bolt fastening torque specifying device and fastening torque specifying method |
| JP7033957B2 (en) | 2018-03-02 | 2022-03-11 | 大成建設株式会社 | Tightening torque specification device for tightening bolts and tightening torque specification method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN2602183Y (en) | Knocking sensor for electronic control injection car engine | |
| CN201130816Y (en) | Sparking plug with adjustable ignition clearance | |
| CN201221428Y (en) | Heat fire head ignition device for petrol engine | |
| RU72728U1 (en) | COMBINED LASER-SPARK SYSTEM OF IGNITION OF THE INTERNAL COMBUSTION ENGINE | |
| MY119183A (en) | Ignition system | |
| CN2907005Y (en) | Spark plug utilizing DC high voltage breakdown for ignition | |
| CN201103507Y (en) | Electric wind ignition system | |
| CN202645815U (en) | Automobile bridge ignition speed-increasing device with fuel conservation, combustion gas conservation and carbon emission reduction effects | |
| CN2728049Y (en) | Spark plug for general mini gas engine | |
| CN202586078U (en) | Annular giant energy spark plug | |
| CN2319940Y (en) | Spark plug | |
| CN201461192U (en) | Engine for igniting ignition board | |
| CN2326741Y (en) | High-energy electronic ignitor of automobile engine for use in cold day | |
| CN2319991Y (en) | Conic whole ceramic heating core of diesel engine electrothermal plug | |
| CN2192738Y (en) | High-voltage electric capacity spark energizer | |
| CN201025213Y (en) | Dual curve two-purpose igniter for motorcycle | |
| CN2288287Y (en) | Ignitor with contact for automobile engine | |
| CN2316742Y (en) | Sparking plug | |
| CN2849208Y (en) | Oil saving jump spark device | |
| CN204572307U (en) | Ozonization spark plug is followed the tracks of in a kind of igniting | |
| CN2344899Y (en) | Sparking plug electrode connection structure | |
| CN2346947Y (en) | General-purpose high effective electronic ignitor | |
| CN2283134Y (en) | Electronic cylinder-separating circuit distributor | |
| CN2615358Y (en) | Electronic voltage-multiplying fuel-saving lifter for gasoline fuel engine | |
| CN2246196Y (en) | Automative high power pulse ignitor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |