CN201141321Y - Flameout solenoid valve protector of diesel engine - Google Patents
Flameout solenoid valve protector of diesel engine Download PDFInfo
- Publication number
- CN201141321Y CN201141321Y CNU2007200875210U CN200720087521U CN201141321Y CN 201141321 Y CN201141321 Y CN 201141321Y CN U2007200875210 U CNU2007200875210 U CN U2007200875210U CN 200720087521 U CN200720087521 U CN 200720087521U CN 201141321 Y CN201141321 Y CN 201141321Y
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- China
- Prior art keywords
- circuit
- relay
- diesel engine
- valve protector
- arc
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Abstract
The utility model relates to a diesel engine shut-down electromagnetic valve protector which belongs to the diesel engine shut-down control technical field and mainly solves the problems of generating strong impulse current when the semiconductor piece is used to control the absorbing coil to start and high performance requirement of the semiconductor piece found in the prior art. The diesel engine shut-down electromagnetic valve protector is characterized in that the electromagnetic valve protector comprises a delay trigger circuit which is composed of an integrated circuit, an arc-extinguishing circuit connected with a controller absorbing coil and a drive circuit of a relay; the input end of the drive circuit is connected with the output end of the delay trigger circuit; the control end of the relay in the drive circuit is connected with the arc-extinguishing circuit. The diesel engine shut-down electromagnetic valve protector has the advantages of high reliability, low cost, good performance and being applicable to the shut-down control devices of the diesel engines.
Description
Technical field
The utility model belongs to the flame-out control technique field of diesel engine.Be specifically related to a kind of device that starts diesel engine.Be applicable to the diesel engine to be vehicle powered and association area.
Background technique
At present, the diesel engine controller that stops working all adopts semiconductor devices to control pull in winding mostly.Because the dc impedance of pull in winding coil has only several ohms at zero point, can produce very big inrush current during startup, this has just proposed very high requirement to semiconductor devices.Select for use high performance device can strengthen the cost of product undoubtedly.Reduce the competitiveness of product in market.
Summary of the invention
The purpose of this utility model is exactly develop at above-mentioned deficiency a kind of, the flame-out solenoid valve protector of diesel engine a kind of highly reliable, low-cost, excellent performance that provides with relay alternative semiconductors device.
Technical solution of the present utility model is: a kind of diesel engine comprises it is characterized in that delay trigger circuit that is connected with power supply and the arc-suppression circuit that is connected with the controller pull in winding: also comprise the drive circuit that contains relay; This drive circuit drives input end and is connected with the control output end of delay trigger circuit; Drive circuit repeat circuit control end is connected with arc-suppression circuit.
Drive circuit described in the technical solution of the present utility model is made of relay, triode, diode and resistance; Wherein, relay is connected in series with triode, and diode is in parallel with relay, and resistance is connected with the base stage of triode.
Arc-suppression circuit described in the technical solution of the present utility model is to be formed in parallel by arc extinguishing electric capacity and fly-wheel diode, and its output terminal is connected with the control end of relay.
Arc-suppression circuit described in the technical solution of the present utility model is in series by arc extinguishing electric capacity and fly-wheel diode, and the connection contact between it is connected with the control end of relay, and the other end of relay is connected with positive source.
Delay trigger circuit described in the technical solution of the present utility model is the Schmidt trigger circuit that is made of triode and integrated operational amplifier.
The utility model adopts delay trigger circuit that integrated operational amplifier constitutes, and arc-suppression circuit that is connected with pull in winding and the drive circuit that contains relay, this drive circuit input end is connected with the output terminal of delay trigger circuit, drive circuit repeat circuit control end is connected with the input end of arc-suppression circuit, insert vehicle power supply during application, after the energising of control power supply, the triode conducting makes relay work in the drive circuit, at this moment the normally opened contact of relay is connected pull in winding, makes it to produce action moment required when starting.Along with the voltage on the delay capacitor in the delay trigger circuit constantly increases, the control output end voltage of delay trigger circuit is descended, triode ends, and the contact of relay disconnects.Because keep coil control during power connection electric, so will maintain suction condition to flame-out controller.
The utility model has improved the anti-interference of product owing to used the delay trigger circuit of integrated operational amplifier formation; Relay, arc extinguishing electric capacity, the drive circuit that fly-wheel diode constitutes has overcome the phenomenon of relay arcing.Because the relay price is low, the shock resistance electric current is strong.Advantages such as reliability height.Make product have the very strong market competitiveness.The utility model is mainly used in diesel engine start and stop control.
Description of drawings
Fig. 1 is the utility model embodiment 1 a electrical schematic diagram;
Fig. 2 is the utility model embodiment 2 a electrical schematic diagram.
Embodiment
The utility model embodiment 1 as shown in Figure 1.This programme mainly includes plastic casing and control circuit K.Control circuit K is made of delay trigger circuit A, drive circuit B and arc-suppression circuit C.Trigger circuit A is made of integrated operational amplifier IC 1, resistance R 1～R6, voltage-stabiliser tube D1, capacitor C 1, C2, triode T1.Drive circuit B is made of relay J 1, triode T1, diode D3 and resistance R 6, and wherein, relay J 1 is connected in series with triode T1, and diode D3 is in parallel with relay J 1, and resistance R 6 is connected with the base stage of triode T1.Arc-suppression circuit C is formed in parallel by arc extinguishing capacitor C 3 and sustained diode 4, and its input end 01 is connected with the control end of relay J 1.Controller X1 contains pull in winding L1 and keeps coil L2.Relay J 1 is connected in series in both ends of power with triode T1; Relay J 1 coil two ends parallel diode D3; Triode T1 base stage links to each other with 1 pin of IC 1 by R6; 8,4 ends of IC1 connect power supply respectively; 2,6 ends of IC1 connect R2, D2, C2, another termination voltage-stabiliser tube D1 negative terminal of R2, D2, another termination GND of C2; 3,5 ends of IC1 connect R3, R4, R5, the voltage-stabiliser tube D1 negative terminal of R3, another termination of R4 GND, 1 pin of another termination of R5 IC1; After D1, the C1 parallel connection with the R1 series connection at both ends of power; Sustained diode 4, in parallel with arc extinguishing capacitor C 3, connect with the contact of relay J 1 then (or arc extinguishing capacitor C 3 is in parallel with the contact of relay J 1, connects with sustained diode 4 again) is connected on the power supply.Design one according to Fig. 1 or Fig. 2 circuit board is installed.Various former devices are welded on the circuit board, check the errorless check of can switching on.Between+24V and GND, add power supply, at this moment will note the action of relay.Relay adhesive when powering up.(generally being in 1 second) relay discharges in the time of design.If move errorless can the test by application of load.01,02 end is connected to pull in winding L1 among the controller X1, the armature of controller is pulled out 25mm, and energising back armature sucks also keeps attracting state.So far the flame-out solenoid valve protector of diesel engine is made successfully.Circuit board packed into be product through encapsulation in the plastic shell.
The utility model embodiment 2 as shown in Figure 2.Not being both with embodiment 1 only is arc-suppression circuit.Arc-suppression circuit D is in series by arc extinguishing capacitor C 4 and sustained diode 5, and the connection contact 01 between it is connected with the control end of relay J 1.
Claims (5)
1, the flame-out solenoid valve protector of a kind of diesel engine, comprise and it is characterized in that delay trigger circuit (A) that is connected with power supply and the arc-suppression circuit (C) that is connected with controller (X1) pull in winding (L1): also comprise the drive circuit (B) that contains relay (J1); This drive circuit (B) drives input end and is connected with the control output end of delay trigger circuit (A); Drive circuit (B) repeat circuit (J1) control end is connected with arc-suppression circuit (C).
2, the flame-out solenoid valve protector of a kind of diesel engine according to claim 1, it is characterized in that: described drive circuit (B) is made of relay (J1), triode (T1), diode (D3) and resistance (R6); Wherein, relay (J1) is connected in series with triode (T1), and diode (D3) is in parallel with relay (J1), and resistance (R6) is connected with the base stage of triode (T1).
3, the flame-out solenoid valve protector of a kind of diesel engine according to claim 1 and 2; it is characterized in that: described arc-suppression circuit (C) is to be formed in parallel by arc extinguishing electric capacity (C3) and fly-wheel diode (D4), and its output terminal (01) is connected with the control end of relay (J1).
4, the flame-out solenoid valve protector of a kind of diesel engine according to claim 1 and 2; it is characterized in that: described arc-suppression circuit (D) is in series by arc extinguishing electric capacity (C4) and fly-wheel diode (D5); connection contact (01) between it is connected with the control end of relay (J1), and the other end of relay (J1) is connected with positive source.
5, the flame-out solenoid valve protector of a kind of diesel engine according to claim 1 and 2 is characterized in that: described delay trigger circuit (A) is the Schmidt trigger circuit that is made of triode (T1) and integrated operational amplifier (IC1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200875210U CN201141321Y (en) | 2007-10-09 | 2007-10-09 | Flameout solenoid valve protector of diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200875210U CN201141321Y (en) | 2007-10-09 | 2007-10-09 | Flameout solenoid valve protector of diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201141321Y true CN201141321Y (en) | 2008-10-29 |
Family
ID=40069034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200875210U Expired - Fee Related CN201141321Y (en) | 2007-10-09 | 2007-10-09 | Flameout solenoid valve protector of diesel engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201141321Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986321A (en) * | 2014-06-09 | 2014-08-13 | 上海沪工焊接集团股份有限公司 | Arc welding power supply safe starting device and method |
| CN107781486A (en) * | 2016-08-26 | 2018-03-09 | 杭州三花研究院有限公司 | A kind of magnetic valve |
-
2007
- 2007-10-09 CN CNU2007200875210U patent/CN201141321Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986321A (en) * | 2014-06-09 | 2014-08-13 | 上海沪工焊接集团股份有限公司 | Arc welding power supply safe starting device and method |
| CN107781486A (en) * | 2016-08-26 | 2018-03-09 | 杭州三花研究院有限公司 | A kind of magnetic valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20081029 Termination date: 20091109 |