CN107882646A

CN107882646A - Diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit and its method

Info

Publication number: CN107882646A
Application number: CN201711102316.1A
Authority: CN
Inventors: 张海洋; 王长宝; 夏永锋; 齐亮; 凌青华; 孙林
Original assignee: Jiangsu University of Science and Technology
Current assignee: Jiangsu University of Science and Technology
Priority date: 2017-11-10
Filing date: 2017-11-10
Publication date: 2018-04-06

Abstract

Stopped in emergency Electromagnetic Valve Circuit failover, warning circuit and its method the invention discloses a kind of diesel engine, circuit is, there is the Electromagnetic Valve Circuit that stops in emergency of undercurrent detection electric current relay, over-current detection electric current relay including string, stop in emergency standby Electromagnetic Valve Circuit, stop in emergency magnetic valve excessively stream switching control loop, stop in emergency magnetic valve undercurrent switching control loop, detection parking power-fail is switched to stand-by power supply supply relay, and the power loss that stops, magnetic valve excessively stream of stopping in emergency, stop in emergency magnetic valve undercurrent alarm circuit.Method is; parking power-fail is directly switch to stand-by power supply power supply; standby magnetic valve is switched to when magnetic valve undercurrent or the excessively stream of stopping in emergency when stopping in emergency to be stopped in emergency; its loop is cut off when stopping in emergency magnetic valve excessively stream to be protected; during non-emergent parking; excessively stream alarm lamp light yellow, not only illustrate Electromagnetic Valve Circuit excessively stream of stopping in emergency, also its switch module failure short circuit of explanation control.

Description

Diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit and its method

Technical field

The invention belongs to diesel engine safety protection technique field, and in particular to a kind of diesel engine stops in emergency Electromagnetic Valve Circuit Failover, warning circuit and its implementation.

Background technology

At present：The emergency stopping system of diesel engine is died and oil-break two ways to stopping in emergency for diesel engine, is died Mode is the installation Electromagnetic Control valve at inlet and outlet mouth, in case of emergency control valve can be died；Oil-break mode is Install oil-break Electromagnetic Control valving additional on oil circuit, can urgent oil-break when failure occurs.These Electromagnetic Control valves are The generally signified magnetic valve that stops in emergency.It is designed when the magnetic valve that the magnetic valve that stops in emergency uses is normal-closed electromagnetic valve Stop in emergency Electromagnetic Valve Circuit for degaussing (dead electricity) stop；When the magnetic valve that the magnetic valve that stops in emergency uses is open type electricity During magnet valve it is designed stop in emergency Electromagnetic Valve Circuit for magnetic (energizations) stops.Magnetic is stopped and obtains in degaussing (dead electricity) (to lead to Electricity) parking two methods in, prior art Literature record：Diesel engine is died with degaussing or the magnetic valve of oil-break is set Electromagnetic Valve Circuit monitoring alarm method is many in the circuit that stops in emergency put, and does not just sketch herein, only to degaussing parking method Subject matter reiterates：Miss the bus and stop, when parking power loss and/or the Electromagnetic Valve Circuit that stops in emergency disconnection, diesel engine mistakenly stop Car, influence diesel engine normal operation.And diesel engine with magnetic died or the magnetic valve of oil-break set the circuit that stops in emergency Middle Electromagnetic Valve Circuit monitoring alarm method is seldom.Diesel engine with magnetic is died or the magnetic valve of oil-break is set urgent stops The car circuit course of work is：The magnetic valve that stopped in emergency when diesel engine normal work is in dead electricity (loss of excitation) state, i.e., promptly stops During car magnetic valve power failure state its control die, oil-break valve is logical；When in the case of urgent and significant trouble to urgent Electromagnetic valve for braking is powered (magnetic), closes the dying of its control, oil-break valve, realizes that diesel engine stops in emergency.However, for Diesel engine when need to stop in emergency, is stopped in emergency with obtaining in the circuit that stops in emergency that magnetic is died or the magnetic valve of oil-break is set Magnetic valve normal power-up diesel engine ability jerk, when line fracture, coil open circuit, coil occurs in the electromagnetic valve coil that stops in emergency When short circuit and the failure such as power supply circuit loose contact, need to stop in emergency, just can not by stop in emergency closed electromagnetic valve its Control die, oil-break valve, cause failure of stopping in emergency, so that the safety of diesel engine cannot ensure.Therefore for The diesel engine that magnetic is died or the magnetic valve of oil-break is set stops in emergency circuit, to ensure that diesel engine (diesel-driven generator) is pacified The execution of full cut-off machine, it is badly in need of being detected and being alarmed to whether the corresponding Electromagnetic Valve Circuit that stops in emergency fails.Although there is document Record, as number of patent application is：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failure alarm circuit And its alarm method, the redundant configuration provided with stand-by power supply and magnetic valve (being similarly normal-open electromagnetic valve), solve：Parking electricity Stand-by power supply power supply is switched to during the dead electricity of source；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency when stopping in emergency, be switched to The work of standby solenoid valves, pass through the dying of standby magnetic valve closing control, oil-break path.Seem perfect and reality is set On may realize：Stand-by power supply power supply is switched to during parking power loss；Stop in emergency electricity when control is stopped in emergency Magnet valve loop disconnects, and is switched to the work of standby solenoid valves, passes through the dying of standby magnetic valve closing control, oil-break path. On when stop power loss when can not possibly be switched to stand-by power supply power supply the reasons why be：Because specific control parking power supply with The rated current of the current relay coil (the second current relay coil) of stand-by power supply switching is more than or equal to parking The rated current of power supply, and it is impossible as the electric current that the first alarm lamp flows through using LED with the current relay coil tandem More than or equal to parking power supply rated current, otherwise will not with LED as alarm lamp；When stop power loss when, it is assumed that It is that the electric current that first alarm lamp flows through is more than or equal to parking power supply to flow through with the current relay coil tandem using LED Rated current, the current relay completes parking power supply and stand-by power supply switch operating, so requires alarm again The rated current of power supply be more than or equal to parking power supply rated current, otherwise can not normally complete switching parking power supply with it is standby Switched with power supply；Again because of current relay coil (the 3rd current relay line with being concatenated using LED as the second alarm lamp Circle) rated current also require that more than or equal to parking power supply rated current, so in order to ensure alarm power supply just Often work, the rated current of alarm power supply is just necessarily required to be more than or equal to more than two times of the rated current of parking power supply, and it is real The rated current requirement of alarm power supply can not possibly be relevant with the rated current for the power supply that stops in engineering design on border, individually Be also impossible to the current requirements that flow through of alarm lamp for power supply power supply of alarming it is relevant with the rated current of parking power supply, and The rated current with parking power supply is also impossible to the rated current of the current relay coil requirement for power supply power supply of alarming It is relevant, equally unlikely require that the electric current that each alarm lamp flows through is more than or equal to for the specified electricity of its power supply powered Stream.On being stopped in emergency when control is stopped in emergency, Electromagnetic Valve Circuit disconnects, it is impossible to is switched to standby solenoid valves work The reasons why be：The current relay (the first current relay) for being serially connected in the Electromagnetic Valve Circuit that stops in emergency identifies not at all To the situation for Electromagnetic Valve Circuit disconnection of stopping in emergency, because being serially connected in the current relay line for the Electromagnetic Valve Circuit that stops in emergency Enclose specified electricity of (the first current relay coil) its rated current of invention setting requirements more than or equal to parking power supply Stream, it is less than jerk car Electromagnetic Valve Circuit disconnection, concrete reason so as to identify at all：Stopped in emergency 1. can only recognize The short-circuit situation of Electromagnetic Valve Circuit because stop in emergency the work of Electromagnetic Valve Circuit normal power-up when, it is set it is caused just Normal electric current can not possibly be more than or equal to the rated current of parking power supply, if caused electric current is more than or equal to parking power supply Rated current, there is short circuit phenomenon in that Electromagnetic Valve Circuit that stops in emergency certainly；2. returned when being serially connected in the magnetic valve that stops in emergency The current relay on road does not recognize the rated current more than or equal to parking power supply, can only illustrate the electromagnetism that stops in emergency Valve loop institute galvanization is in normal range (NR) or is less than normal value or direct breaking current etc. because loose contact resistance becomes high current In zero；3. because the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency can only recognize the magnetic valve that stops in emergency and return The short-circuit situation on road, so as to which no matter the Electromagnetic Valve Circuit institute's galvanization that occurs stopping in emergency is in normally, also it is less than normally When (such as open circuit)：Stop assuming that the 3rd current relay coil institute galvanization being serially connected on the second alarm lamp is more than or equal to The rated current of car power supply, then standby magnetic valve be similarly in obtain electric working condition；Actually it is serially connected on the second alarm lamp 3rd current relay coil institute galvanization can not possibly be more than or equal to the rated current of parking power supply, so ought promptly stop For car Electromagnetic Valve Circuit institute's galvanization no matter being in normal, being also less than standby magnetic valve when normal (such as open circuit) must not be electric；4. because For the short circuit for the Electromagnetic Valve Circuit that stops in emergency can only be recognized when the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency Situation, when the Electromagnetic Valve Circuit that stops in emergency electric current be more than or equal to parking power supply rated current when, to the electricity that stops in emergency Magnet valve loop is not cut off, and in the same old way in "on" position, and has been turned off the standby magnetic valve that has no problem, therefore is not had urgent Electromagnetic valve for braking loop short-circuit protection is made, and can not be switched to standby magnetic valve and be stopped in emergency, certainly can not be to parking Power supply plays overload protective function.Further reaffirm：Cause is serially connected in the specified of two current relay coils on alarm lamp Electric current is required to the rated current for being more than or equal to parking power supply, and hardly possible is more than or equal to parking to the rated current of alarm power supply More than two times of the rated current of power supply, and each with LED as alarm lamp light when the electric current that flows through be more than or equal to parking The rated current of power supply, otherwise, the current relay being serially connected on alarm lamp is had no idea work.Certainly there is patent Shen Please number be：201510845456.2 a kind of diesel-driven generator stop in emergency Electromagnetic Valve Circuit failure alarm circuit and its alarm Method, the redundant configuration provided with stand-by power supply and magnetic valve (being similarly normal-open electromagnetic valve), solve：During parking power loss It is switched to stand-by power supply power supply；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency when stopping in emergency, be switched to standby electromagnetism Valve energization work, pass through the dying of standby magnetic valve closing control, oil-break path.Emitting seemingly realizes above-mentioned function, but except depositing It is in number of patent application：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failure alarm circuit and its Alarm method all the problem of existing and defect, it is direct also to there is the electricity caused by diesel-driven generator of power supply used in alarm lamp To power, alarm lamp indicates to can't see at all after diesel-driven generator jerk car, because when controlling diesel-driven generator jerk, user Alarm lamp can not possibly be stared to see, it may be noted that once alarm lamp instruction state only after jerk, but diesel-driven generator jerk is not sent out How electricity, what is said or talked about have power supply output.And froming the perspective of from number of patent application 201510846141.X and number of patent application 201510845456.2 Beneficial effect content described in bright book is seen：Diesel engine (diesel generator) stop in emergency Electromagnetic Valve Circuit Failure Alarm electricity Road, self-shield can be carried out in time in device fails, to ensure its Electromagnetic Valve Circuit normal work of stopping in emergency, from And realize the automatic emergency stop-working protection of diesel engine (diesel generator) in abnormal cases.Further illustrate patent application The accompanying drawing of number 201510846141.X and number of patent application 201510845456.2 is diesel engine main control module to diesel engine (bavin Diesel engine) the Electromagnetic Valve Circuit failure alarm circuit that stops in emergency sends emergency shutdown instruction, and controlling switch module switch connects Diesel engine (diesel generator) after logical stops in emergency Electromagnetic Valve Circuit failure alarm circuit structural representation, that is to say, that The accompanying drawing of number of patent application 201510846141.X and number of patent application 201510845456.2 is bavin when stopping in emergency Oil machine (diesel generator) is stopped in emergency Electromagnetic Valve Circuit failure alarm circuit structural representation, so as to illustrate further (diesel engine is sent out for number of patent application 201510846141.X and diesel engine described in number of patent application 201510845456.2 Motor) use stop in emergency magnetic valve for magnetic electromagnetic valve for braking.

The content of the invention

The purpose of the present invention in order to solve the defects of prior art is present, for magnetic is died or the electromagnetism of oil-break Valve set diesel engine stop in emergency, there is provided a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failover, warning circuit and its Method, realize that parking power-fail is switched to stand-by power supply power supply, the Electromagnetic Valve Circuit undercurrent that ought be stopped in emergency when stopping in emergency, Excessively stream, it is switched to standby magnetic valve and is stopped in emergency, short-circuit protection is also carried out during magnetic valve excessively stream of stopping in emergency, ensures tight Anxious vehicle-parking circuit normal work；And indicator lamp is carried out to failure and prompted respectively.

In order to realize above-mentioned purpose, the technical scheme of realization of the invention is：

Diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit, including parking power supply DC1, stand-by power supply DC2, alarm power supply DC3, first voltage type relay, second voltage type relay, tertiary voltage type relay, the first electric current Type relay, the second current relay, the magnetic valve HV1 that stops in emergency, standby magnetic valve HV2, Fisrt fault indicator lamp MIL1, the second malfunction indicator lamp MIL2, the 3rd malfunction indicator lamp MIL3, first switch module K1, second switch module K2, can Control silicon SCR, resistance R1, resistance R2；The first voltage type relay coil KV11 directly power supply DC1 and connects with parking, stops Power supply DC1 positive pole is connected with first voltage type relay two-way contact KV12 normally opened end, stand-by power supply DC2 positive pole It is connected with first voltage type relay two-way contact KV12 normal-closed end, stand-by power supply DC2 negative pole and parking power supply DC1 Negative pole be connected；First switch module K1 switch is sequentially connected in series the first current relay coil KI11, the second current mode Relay coil KI21, tertiary voltage type relay normally closed contact KV33, the magnetic valve HV1 that stops in emergency coil after, first opens The other end for closing module K1 switch is connected with first voltage type relay two-way contact KV12 common port, stops in emergency The other end of magnetic valve HV1 coil is connected with the negative pole for the power supply DC1 that stops, with the power supply DC1 or stand-by power supply DC2 that stops First parking loop is formed, first parking loop is the Electromagnetic Valve Circuit that stops in emergency；Second switch module K2's opens After closing the coil for being sequentially connected in series standby magnetic valve HV2, second voltage type relay normally open contact KV22, second switch module K2 The other end of switch be connected with first voltage type relay two-way contact KV12 common port, second voltage type relay The normally opened contact KV22 other end is connected with the negative pole for the power supply DC1 that stops, and is formed with parking power supply DC1 or stand-by power supply DC2 Article 2 parking loop, the Article 2 parking loop is the standby Electromagnetic Valve Circuit that stops in emergency；Second current relay is normal The one end for opening contact KI22 is connected with resistance R1 one end, resistance the R1 other end and tertiary voltage type relay coil KV31 one end and the connecting line that first switch module K1 switch and the first current relay coil KI11 is accessed after connecing On, the tertiary voltage type relay coil KV31 other end is connected with the anode of controllable silicon SCR, the second current relay The normally opened contact KI22 other end and the control pole of controllable silicon SCR and resistance R2 one end phase simultaneously connect, the resistance R2 other end with The negative electrode phase of controllable silicon SCR and connect afterwards with stop power supply DC1 negative pole be connected, with stop power supply DC1 or stand-by power supply DC2 Article 3 parking loop is formed, the Article 3 parking loop is magnetic valve excessively stream switching control loop of stopping in emergency；First electricity The company of flow pattern relay normally closed contact KI12 one end access second switch module K2 switch and standby magnetic valve HV2 coils In wiring, after the first current relay normally-closed contact KI12 other end concatenation second voltage type relay coil KV21 with Parking power supply DC1 negative connect is connected, and Article 4 parking loop is formed with parking power supply DC1 or stand-by power supply DC2, and described the Four parking loops are magnetic valve undercurrent switching control loop of stopping in emergency；First voltage type relay normally closed contact KV13 goes here and there Connect with alarm power supply DC3 and connecing after the 3rd malfunction indicator lamp MIL3, forming parking power-fail with alarm power supply DC3 alarms back Road；Tertiary voltage type relay two-way contact KV32 common port is connected with the positive pole for the power supply DC3 that alarms, tertiary voltage type Relay two-way contact KV32 normally opened end is connected after concatenating the second malfunction indicator lamp MIL2 with the negative pole for the power supply DC3 that alarms, The magnetic valve excessively stream alarm circuit that stops in emergency is formed with alarm power supply DC3；Tertiary voltage type relay two-way contact KV32's is normal Negative pole after closed end concatenation second voltage type relay normally open contact KV23, Fisrt fault indicator lamp MIL1 with the power supply DC3 that alarms It is connected, the magnetic valve undercurrent alarm circuit that stops in emergency is formed with alarm power supply DC3；First switch module K1 control terminal and Second switch module K2 control terminal is connected with each other to be connected with the output of diesel engine main control module afterwards.

Fisrt fault indicator lamp MIL1 described above carries for the magnetic valve HV1 coil undercurrents that stopped in emergency during stopping in emergency Show, when Fisrt fault indicator lamp MIL1 is lighted, the coil undercurrent for the magnetic valve HV1 that illustrates to stop in emergency.

Second malfunction indicator lamp MIL2 described above is multi-functional prompting：For period and the non-emergent dwelling period of stopping in emergency Between stop in emergency magnetic valve HV1 coil excessively stream prompting：Become during the second malfunction indicator lamp MIL2 is stopping in emergency by extinguishing Light, the magnetic valve HV1 that illustrates the to stop in emergency coil excessively stream during stopping in emergency；When the second malfunction indicator lamp MIL2 is non- Lighted by extinguishing change during stopping in emergency, the magnetic valve HV1 that illustrates the to stop in emergency coil excessively stream during non-emergent parking, and Illustrate that first switch module K1 switch fails and short-circuit during non-emergent parking simultaneously；As the second malfunction indicator lamp MIL2 Lighted during stopping in emergency by extinguishing change, after during diesel engine enters non-emergent parking：If the second malfunction indicator lamp MIL2 Extinguish, illustrate first switch module K1 switch controlled switch-off, if the second malfunction indicator lamp MIL2 is remain on, illustrate first Switch module K1 switch is uncontrolled and short-circuit；When the second malfunction indicator lamp MIL2 during non-emergent parking by extinguishing height It is bright, treat that diesel engine enters period of stopping in emergency, the second malfunction indicator lamp MIL2 is remain on.

3rd malfunction indicator lamp MIL3 described above be used to stop power supply DC1 dead electricity when prompt, when parking power supply the 3rd therefore When barrier indicator lamp MIL3 is lighted, illustrate power supply DC1 failures of stopping.

First voltage type relay coil KV11 described above rated voltage is more than parking power supply DC1 rated voltage.

Above-described first voltage type relay two-way contact KV12, second voltage type relay normally open contact KV22, And the maximum current that tertiary voltage type relay normally closed contact KV33 is allowed to flow through is all higher than or equal to stopping power supply DC1's Rated current.

Above-described first current relay coil KI11：When the electric current flowed through is more than or equal to its rated current The contact action of one current relay, i.e. normally opened contact are connected, and normally-closed contact disconnects；When the electric current flowed through is specified less than its The contact of the first current relay is in static state during electric current, i.e. normally opened contact is disconnected, and normally-closed contact is connected.

Above-described second current relay coil KI21：The second electricity when the electric current flowed through is more than its rated current The contact action of flow pattern relay, i.e. normally opened contact are connected, and normally-closed contact disconnects；When the electric current flowed through is specified less than or equal to its The contact of the second current relay is in static state during electric current, i.e. normally opened contact is disconnected, and normally-closed contact is connected.

First current relay coil KI11 described above rated current is set equal to the magnetic valve HV1 lines that stop in emergency The extinction current of circle；The rated current of the second current relay coil KI21 is set equal to the electromagnetism that stops in emergency The maximum allowed current of valve HV1 coils.

The above-described extinction current for stopping in emergency magnetic valve HV1 coils is to refer to guarantee to stop in emergency electromagnetism The minimum current of valve HV1 normal works.

The above-described maximum allowed current for stopping in emergency magnetic valve HV1 coils is to refer to guarantee to burn out promptly The maximum operating currenbt of electromagnetic valve for braking HV1 coils.

Second switch module K2 described above：When receiving the emergency shut-down control device signal that diesel engine main control module is sent Period, second switch module K2 switch connections；When not receiving the emergency shut-down control device signal that diesel engine main control module is sent Period, phase second switch module K2 switch, which is in, to be disconnected.

First switch module K1 described above is when receiving the emergency shut-down control device signal that diesel engine main control module is sent Period and when not receiving emergency shut-down control device signal that diesel engine main control module is sent during：First switch module K1's opens Pass break-make is unknown state.

In order to realize above-mentioned purpose, another technical scheme of the invention is：

Diesel engine stops in emergency the implementation method of Electromagnetic Valve Circuit failover, warning circuit, comprises the following steps:

First, stop power supply DC1 and stand-by power supply DC2 handoff procedures

1) when stop power supply DC1 output for it is normal when, first voltage type relay coil KV11 obtain it is electric, first voltage type after The contact action of electrical equipment：

(1) first voltage type relay two-way contact KV12 common port and normally opened termination are logical, and parking power supply DC1 is to parking Loop power supply；

(2) first voltage type relay normally closed contact KV13 disconnects, and the 3rd malfunction indicator lamp MIL3 extinguishes；

2) when the power supply DC1 that stops fails, first voltage type relay coil KV11 dead electricity, first voltage type relay Contact reverts to static state：

(1) first voltage type relay two-way contact KV12 common port is connected with normal-closed end, is switched to stand-by power supply DC2 To parking loop power supply；

(2) first voltage type relay normally closed contact KV13 is connected, and the 3rd malfunction indicator lamp MIL3 is lighted, and prompts user to stop Car power supply DC1 fails；

2nd, the process for the magnetic valve HV1 and standby magnetic valve HV2 that stops in emergency is controlled

1) during control diesel engine stops in emergency, second switch module K2 switch connection is assert, if entering control bavin Oil machine stop in emergency during before controllable silicon SCR be in cut-off, i.e., the contact of tertiary voltage type relay be in static state：

(1) when the coil for the magnetic valve HV1 that stops in emergency is in normal operating conditions, that is, the Electromagnetic Valve Circuit that stops in emergency is flowed through Electric current when the extinction current for the magnetic valve HV1 coils that stop in emergency is between maximum allowed current, illustrate first switch Module K1 switch connection, and the contact action of the first current relay, the contact of the second current relay are in quiet State：

1. the first current relay normally-closed contact KI12 disconnects, second voltage type relay coil KV21 must not be electric, the The contact of two voltage-type relays is in static state：

A. second voltage type relay normally open contact KV22 disconnects, and the standby Electromagnetic Valve Circuit that stops in emergency must not be electric, standby Magnetic valve HV2 is in loss of excitation；

B. second voltage type relay normally open contact KV23 disconnects, and Fisrt fault indicator lamp MIL1 extinguishes；

2. the second current relay normally opened contact KI22 disconnects, the control terminal of no triggering Continuity signal to controllable silicon SCR, Tertiary voltage type relay coil KV31 must not be electric, and the contact of tertiary voltage type relay is in static state, is serially connected in and stops in emergency Tertiary voltage type relay normally closed contact KV33 in Electromagnetic Valve Circuit is connected, and control alarm power supply DC3 indicates to Fisrt fault The tertiary voltage type relay two-way contact KV32 of lamp MIL1 and the second malfunction indicator lamp MIL2 power supplies common port and normally opened end Disconnect, the second malfunction indicator lamp MIL2 extinguishes；

(2) when the coil undercurrent for the magnetic valve HV1 that stops in emergency, that is, the electric current for flowing through the Electromagnetic Valve Circuit that stops in emergency are less than tightly During the extinction current of anxious electromagnetic valve for braking HV1 coils, illustrate that first switch module K1 switch is possible to breaking, and the The contact of one current relay and the contact of the second current relay are in static state：

1. the first current relay normally-closed contact KI12 connect, second voltage type relay coil KV21 obtain it is electric, second The contact action of voltage-type relay, i.e. second voltage type relay normally open contact KV22 are connected, and second voltage type relay is normal Open contact KV23 connections：Second voltage type relay normally open contact KV22 is connected, and the standby Electromagnetic Valve Circuit that stops in emergency is powered, Standby magnetic valve HV2 obtains magnetic；

2. the second current relay normally opened contact KI22 disconnects, the control terminal of no triggering Continuity signal to controllable silicon SCR, Tertiary voltage type relay coil KV31 must not be electric, and the contact of tertiary voltage type relay is in static state, is serially connected in and stops in emergency Tertiary voltage type relay normally closed contact KV33 in Electromagnetic Valve Circuit is connected, and control alarm power supply DC3 indicates to Fisrt fault The tertiary voltage type relay two-way contact KV32 of lamp MIL1 and the second malfunction indicator lamp MIL2 power supplies common port and normally opened end Disconnect, and connected with normal-closed end：

A. tertiary voltage type relay two-way contact KV32 common port disconnects with normally opened end, the second malfunction indicator lamp MIL2 Extinguish；

B. tertiary voltage type relay two-way contact KV32 common port is connected with normal-closed end, treats second voltage type relay Normally opened contact KV23 is connected, and Fisrt fault indicator lamp MIL1 is lighted, the coil undercurrent for prompting user to stop in emergency magnetic valve HV1；

(3) when the coil excessively stream for the magnetic valve HV1 that stops in emergency, that is, the electric current for flowing through the Electromagnetic Valve Circuit that stops in emergency are more than tightly During the maximum allowed current of anxious electromagnetic valve for braking HV1 coils, illustrate first switch module K1 switch connection, and the first electric current The contact of type relay and the contact of the second current relay act：

1. the second current relay normally opened contact KI22 is connected, there is control terminal of the triggering and conducting signal to controllable silicon SCR, Controllable silicon SCR conducting is triggered, tertiary voltage type relay coil KV31 obtains electric, the contact action of tertiary voltage type relay：

A. the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, and cut-out is tight Jerk car Electromagnetic Valve Circuit is powered, and to stopping in emergency, Electromagnetic Valve Circuit carries out short-circuit protection；

B. the 3rd electricity that control alarm power supply DC3 powers to Fisrt fault indicator lamp MIL1 and the second malfunction indicator lamp MIL2 Die mould relay two-way contact KV32 common port and normally opened termination are logical, and are disconnected with normal-closed end：

Tertiary voltage type relay two-way contact KV32 common port and normally opened termination are logical, the second malfunction indicator lamp MIL2 points Coil excessively stream that is bright, prompting user to stop in emergency magnetic valve HV1；

Tertiary voltage type relay two-way contact KV32 common port disconnects with normal-closed end, and Fisrt fault indicator lamp MIL1 puts out Go out；

C. after controllable silicon SCR conducting, wait to remove to controllable silicon SCR anode institute's power supply source or treat opening for first switch module K1 Shut-off controllable silicon SCR cut-off when opening, the contact of tertiary voltage type relay are static state, otherwise, tertiary voltage type by Dynamic- Recovery Relay is always maintained at being powered；

2. the first current relay normally-closed contact KI12 disconnects, second voltage type relay coil KV21 must not be electric, the The contact of two voltage-type relays is in static state, i.e. second voltage type relay normally open contact KV22 disconnects, stopped in emergency standby Electromagnetic Valve Circuit no power, standby magnetic valve HV2 losss of excitation：

Until when the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, the The contact of one current relay reverts to static state, i.e. the first current relay normally-closed contact KI12 is connected, second voltage type Relay coil KV21 obtains electric, and the contact of second voltage type relay action, second voltage type relay normally open contact KV22 connects Logical, second voltage type relay normally open contact KV23 is connected：

A. second voltage type relay normally open contact KV22 is connected, then the standby Electromagnetic Valve Circuit that stops in emergency is powered, standby Magnetic valve HV2 obtains magnetic；

B. second voltage type relay normally open contact KV23 is connected, and does not influence the Fisrt fault indicator lamp in OFF state MIL1；

2) during non-controlling diesel engine stops in emergency, switching off for second switch module K2 is assert：

(1) standby magnetic valve HV2 is in loss of excitation；

Second voltage type relay coil KV21 must not electricity, the contact of second voltage type relay is in static state, i.e., the Two voltage-type relay normally open contact KV23 disconnect, and Fisrt fault indicator lamp MIL1 extinguishes；

(3) when first switch module K1 switch is in short circuit, then tertiary voltage type relay keeps entering non-controlling diesel oil Machine stop in emergency before working condition：

1. controllable silicon SCR is on before being stopped in emergency into non-controlling diesel engine, i.e., at tertiary voltage type relay In energization, then, the contact of tertiary voltage type relay keeps being in operating state, that is, controls alarm power supply DC3 to Fisrt fault Indicator lamp MIL1 and the second malfunction indicator lamp MIL2 power supply tertiary voltage type relay two-way contact KV32 common port with often Beginning connects, and the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects：

A. tertiary voltage type relay two-way contact KV32 common port and normally opened termination are logical, the second failure being remain on Indicator lamp MIL2, the coil excessively stream and for prompting user to enter before non-controlling diesel engine stops in emergency the magnetic valve HV1 that stops in emergency One switch module K1 switch failure short circuit；

B. the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, and promptly stops The line segment that car Electromagnetic Valve Circuit is controlled by tertiary voltage type relay normally closed contact KV33 disconnects；

2. controllable silicon SCR is in cut-off before being stopped in emergency into non-controlling diesel engine, if stopping in emergency Electromagnetic Valve Circuit Middle electric current is less than or equal to the maximum allowed current for the magnetic valve HV1 coils that stop in emergency, then controllable silicon SCR holding cut-off, the 3rd electricity The contact of die mould relay keeps being in static state, that is, controls alarm power supply DC3 to Fisrt fault indicator lamp MIL1 and second The tertiary voltage type relay two-way contact KV32 of malfunction indicator lamp MIL2 power supplies common port disconnects with normally opened end, is serially connected in The tertiary voltage type relay normally closed contact KV33 to stop in emergency in Electromagnetic Valve Circuit is connected：

B. the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency is connected, and is promptly stopped The line segment that car Electromagnetic Valve Circuit is controlled by tertiary voltage type relay normally closed contact KV33 connects；

3. controllable silicon SCR is in cut-off before being stopped in emergency into non-controlling diesel engine, if stopping in emergency Electromagnetic Valve Circuit Middle electric current is more than the maximum allowed current for the magnetic valve HV1 coils that stop in emergency, then the contact action of the second current relay, Second current relay normally opened contact KI22 is connected, controllable silicon SCR triggering and conducting, tertiary voltage type relay coil KV31 Obtain electric, the contact action of tertiary voltage type relay：

B. the 3rd electricity that control alarm power supply DC3 powers to Fisrt fault indicator lamp MIL1 and the second malfunction indicator lamp MIL2 Die mould relay two-way contact KV32 common port and normally opened termination are logical, and the second malfunction indicator lamp MIL2 is lighted, and prompts user to exist Non-controlling diesel engine stops in emergency magnetic valve HV1 coil excessively stream during stopping in emergency, and and represents first switch module K1's Switch failure short circuit；

C. after controllable silicon SCR conducting, wait to remove to controllable silicon SCR anode institute's power supply source or treat opening for first switch module K1 Shut-off controllable silicon SCR cut-off when opening, the contact of tertiary voltage type relay are static state, otherwise, tertiary voltage type by Dynamic- Recovery Relay is always maintained at being powered.

(4) switching off as first switch module K1, then, controllable silicon SCR cut-off, the contact of tertiary voltage type relay In static state, that is, alarm power supply DC3 is controlled to the 3rd of Fisrt fault indicator lamp MIL1 and the second malfunction indicator lamp MIL2 power supplies Voltage-type relay two-way contact KV32 common port disconnects with normally opened end, the be serially connected in the Electromagnetic Valve Circuit that stops in emergency Three voltage-type relay normally closed contact KV33 are connected：

B. the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency is connected, and is promptly stopped The line segment that car Electromagnetic Valve Circuit is controlled by tertiary voltage type relay normally closed contact KV33 connects.

Above-described diesel engine stops in emergency the implementation method of Electromagnetic Valve Circuit failover, warning circuit, in addition to Following steps:

In stand-by power supply DC2 to during parking loop power supply, when power supply DC1 outputs of stopping revert to normal, first is electric Die mould relay coil KV11 obtains electric, the contact action of first voltage type relay：

(1) first voltage type relay two-way contact KV12 common port and normally opened termination are logical, recover parking power supply DC1 to Stop loop power supply；

(2) first voltage type relay normally closed contact KV13 disconnects, and the 3rd malfunction indicator lamp MIL3 lighted extinguishes.

Stopped in emergency with above-mentioned diesel engine the implementation method of Electromagnetic Valve Circuit failover, warning circuit, in addition to：

The process for the magnetic valve HV1 and standby magnetic valve HV2 that stops in emergency is controlled, during control diesel engine stops in emergency, Assert second switch module K2 switch connection, controllable silicon SCR is in before during entering control diesel engine and stopping in emergency leads Logical, i.e., tertiary voltage type relay is in "on" position, illustrates the first switch mould before during control diesel engine stops in emergency Block K1 switch failure short circuit, and Electromagnetic Valve Circuit excessively stream of stopping in emergency, and excessively stream has been carried out to the Electromagnetic Valve Circuit that stops in emergency Protection, the line segment that Electromagnetic Valve Circuit is controlled by tertiary voltage type relay normally closed contact KV33 that stops in emergency disconnect, the first electric current The contact of type relay and the contact of the second current relay keep, in static state, being directly entered the magnetic valve that stops in emergency HV1 coil undercurrent control, the first current relay normally-closed contact KI12 are connected, second voltage type relay coil KV21 Must be electric, the contact action of second voltage type relay, specifically have：

1) the 3rd electricity that control alarm power supply DC3 powers to Fisrt fault indicator lamp MIL1 and the second malfunction indicator lamp MIL2 Die mould relay two-way contact KV32 common port and normally opened termination are logical, and are disconnected with normal-closed end：

(1) tertiary voltage type relay two-way contact KV32 common port and normally opened termination are logical, the second failure being remain on Indicator lamp MIL2, prompt user stop in emergency magnetic valve HV1 coil excessively stream and first switch module K1 switch failure it is short Road；

(2) tertiary voltage type relay two-way contact KV32 common port disconnects with normal-closed end, keeps the Fisrt fault extinguished Indicator lamp MIL1；

2) second voltage type relay normally open contact KV22 is connected, and the standby Electromagnetic Valve Circuit that stops in emergency is powered, standby electricity Magnet valve HV2 obtains magnetic；

3) second voltage type relay normally open contact KV23 is connected, and does not influence the Fisrt fault indicator lamp in OFF state MIL1。

Above-described diesel engine stops in emergency the implementation method of Electromagnetic Valve Circuit failover, warning circuit, in addition to:

After controllable silicon SCR turns on, the second current relay normally opened contact KI22 disconnects, and does not influence controllable silicon SCR and leads Logical self-locking state.

Above-described diesel engine stops in emergency the implementation method of Electromagnetic Valve Circuit failover, warning circuit, its feature It is, after the controllable silicon SCR triggering and conducting, discharges self-locking when removing to controllable silicon SCR anode institute power supply source, refer to treat When removing parking power supply DC1 and stand-by power supply DC2, controllable silicon SCR cut-off, the contact of tertiary voltage type relay is by dynamically extensive Multiple is static state.

Beneficial effect：

The diesel engine of the present invention stops in emergency Electromagnetic Valve Circuit failover, warning circuit and its method, main feature：

(1) during the entire process of during diesel engine stops in emergency period and non-emergent parking, once parking power-fail, Stand-by power supply work is immediately switched to, and lights the 3rd malfunction indicator lamp MIL3, prompts user's parking power-fail；Wait to stop Power up is normal, automatically returns to parking power supply power supply.

(2) overcurrent protection is not in before diesel engine stops in emergency, during diesel engine stops in emergency, if stopping in emergency electricity Magnet valve HV1 coil undercurrent, stopped in emergency immediately by standby magnetic valve HV2, and light Fisrt fault indicator lamp MIL1, the coil undercurrent for prompting user to stop in emergency magnetic valve HV1.

(3) during diesel engine stops in emergency, if detecting the coil excessively stream for the magnetic valve HV1 that stops in emergency, cut-out is tight immediately Jerk car Electromagnetic Valve Circuit, the Electromagnetic Valve Circuit that stopped in emergency to cut-out carry out short-circuit protection, light the second malfunction indicator lamp MIL2, the coil excessively stream for prompting user to stop in emergency magnetic valve HV1, and by means of the coil undercurrent for the magnetic valve HV1 that stops in emergency When be switched to standby magnetic valve HV2 and carry out method of stopping in emergency, stopped in emergency by standby magnetic valve HV2.

(4) during stopping in emergency when diesel engine, excessively stream short-circuit protection has been carried out, its short-circuit protection and the second failure has been lighted and refers to Show that lamp MIL2 until removing parking power supply DC1 and stand-by power supply DC2 or when switching off of first switch module K1, stops short Protect and extinguish the second malfunction indicator lamp MIL2 lighted in road.

(5) overcurrent protection is in before diesel engine stops in emergency, not only explanation stop in emergency Electromagnetic Valve Circuit have short circuit and mistake Stream, also illustrate first switch module K1 switch failure short circuit, when diesel engine stops in emergency, be directly switch to standby electromagnetism Valve HV2 is stopped in emergency.

(6) Electromagnetic Valve Circuit excessively stream of being stopped in emergency when diesel engine stops in emergency and protect, if into mistake during non-emergent parking Stream indicator lamp is always maintained at lighting, and also illustrates first switch module K1 switch failure short circuit.

(7) the number of contacts of tertiary voltage type relay is reduced with controllable silicon as self-locking element.

Brief description of the drawings

The diesel engine that Fig. 1 is the present invention stops in emergency the circuit structure diagram of Electromagnetic Valve Circuit failover, warning circuit；

In figure：KV11. first voltage type relay coil, KV12. first voltage type relay two-way contacts, KV13. One voltage-type relay normally closed contact, KV21. second voltage type relay coils, KV22, KV23. second voltage type relay Normally opened contact, KV31. tertiary voltage type relay coils, KV32. tertiary voltage type relay two-way contacts, the electricity of KV33. the 3rd Die mould relay normally closed contact, KI11. the first current relay coils, KI12. the first current relay normally-closed contacts, KI21. the second current relay coil, KI22. the second current relay normally opened contacts, DC1. parking power supplys, DC2. are standby With power supply, DC3. alarm power supplys, HV1. stops in emergency magnetic valve, the standby magnetic valves of HV2., MIL1. Fisrt fault indicator lamps, MIL2. the second malfunction indicator lamp, the malfunction indicator lamp of MIL3. the 3rd, K1. first switch modules, K2. second switch modules, SCR. Controllable silicon, R1, R2. resistance.

Embodiment

Electromagnetic Valve Circuit failover, warning circuit as shown in figure 1, diesel engine stops in emergency, including parking power supply DC1, Stand-by power supply DC2, alarm power supply DC3, first voltage type relay, second voltage type relay, tertiary voltage type relay, First current relay, the second current relay, the magnetic valve HV1 that stops in emergency, standby magnetic valve HV2, Fisrt fault refer to Show lamp MIL1, the second malfunction indicator lamp MIL2, the 3rd malfunction indicator lamp MIL3, first switch module K1, second switch module K2, controllable silicon SCR, resistance R1, resistance R2；The first voltage type relay coil KV11 is directly with stopping power supply DC1 simultaneously Connect, parking power supply DC1 positive pole is connected with first voltage type relay two-way contact KV12 normally opened end, stand-by power supply DC2 Positive pole be connected with first voltage type relay two-way contact KV12 normal-closed end, stand-by power supply DC2 negative pole and parking electricity Source DC1 negative pole is connected；First switch module K1 switch is sequentially connected in series the first current relay coil KI11, second Current relay coil KI21, tertiary voltage type relay normally closed contact KV33, the magnetic valve HV1 that stops in emergency coil after, The other end of first switch module K1 switch is connected with first voltage type relay two-way contact KV12 common port, tightly The other end of anxious electromagnetic valve for braking HV1 coil is connected with the negative pole for the power supply DC1 that stops, with parking power supply DC1 or standby electricity Source DC2 forms first parking loop, and first parking loop is the Electromagnetic Valve Circuit that stops in emergency；Second switch module After K2 switch is sequentially connected in series standby magnetic valve HV2 coil, second voltage type relay normally open contact KV22, second switch The other end of module K2 switch is connected with first voltage type relay two-way contact KV12 common port, second voltage type The relay normally open contact KV22 other end is connected with the negative pole for the power supply DC1 that stops, with parking power supply DC1 or stand-by power supply DC2 forms Article 2 parking loop, and the Article 2 parking loop is the standby Electromagnetic Valve Circuit that stops in emergency；Second current mode Relay normally open contact KI22 one end is connected with resistance R1 one end, resistance the R1 other end and tertiary voltage type relay Device coil KV31 one end and the company that first switch module K1 switch and the first current relay coil KI11 is accessed after connecing In wiring, the tertiary voltage type relay coil KV31 other end is connected with the anode of controllable silicon SCR, the second current mode after The electrical equipment normally opened contact KI22 other end and the control pole of controllable silicon SCR and resistance R2 one end phase simultaneously connect, and resistance R2's is another The negative pole held the negative electrode phase with controllable silicon SCR and connect afterwards with the power supply DC1 that stops is connected, with parking power supply DC1 or stand-by power supply DC2 forms Article 3 parking loop, and the Article 3 parking loop is magnetic valve excessively stream switching control loop of stopping in emergency；The One current relay normally-closed contact KI12 one end access second switch module K2 switch and standby magnetic valve HV2 coils Connecting line on, the first current relay normally-closed contact KI12 other end concatenation second voltage type relay coil KV21 Negative connect with the power supply DC1 that stops is connected afterwards, and Article 4 parking loop, institute are formed with parking power supply DC1 or stand-by power supply DC2 Article 4 parking loop is stated as magnetic valve undercurrent switching control loop of stopping in emergency；First voltage type relay normally closed contact KV13 power supply DC3 and is connect after concatenating the 3rd malfunction indicator lamp MIL3 with alarm, and parking power-fail is formed with alarm power supply DC3 Alarm circuit；Tertiary voltage type relay two-way contact KV32 common port is connected with the positive pole for the power supply DC3 that alarms, and the 3rd Negative pole after voltage-type relay two-way contact KV32 normally opened end the second malfunction indicator lamp MIL2 of concatenation with the power supply DC3 that alarms It is connected, the magnetic valve excessively stream alarm circuit that stops in emergency is formed with alarm power supply DC3；Tertiary voltage type relay two-way contact After KV32 normal-closed end concatenation second voltage type relay normally open contact KV23, Fisrt fault indicator lamp MIL1 with power supply of alarming DC3 negative pole is connected, and the magnetic valve undercurrent alarm circuit that stops in emergency is formed with alarm power supply DC3；First switch module K1's It is connected after control terminal and second switch module K2 control terminal are connected with each other with the output of diesel engine main control module.

Controllable silicon SCR described above be used for stop in emergency Electromagnetic Valve Circuit excessively stream when stop in emergency magnetic valve excessively stream switching control Energization self-locking in loop processed.When the second current relay normally opened contact KI22 connections, switch of the power supply through first switch module K1 By resistance R1, R2 triggering and conducting signal, triggering controllable silicon SCR conducting are provided to controllable silicon SCR control pole；When the second electric current Type relay normally open contact KI22 disconnects, and power supply can not provide triggering and conducting by resistance R1, R2 to controllable silicon SCR control pole Signal, you can control silicon SCR control pole is without triggering Continuity signal；The present invention is single-phase silicon-controlled from controllable silicon SCR.When first The switch module K1 cut-off of controllable silicon SCR when switching off.

Magnetic valve excessively stream switching control loop described above of stopping in emergency is used for stop in emergency period and non-emergent dwelling period Between stop in emergency magnetic valve HV1 coil over-current detection switching control.

Magnetic valve undercurrent switching control loop described above of stopping in emergency is used for the magnetic valve that stopped in emergency during stopping in emergency HV1 coil undercurrent detection switching control.

Coil undercurrents of the Fisrt fault indicator lamp MIL1 described above for the magnetic valve HV1 that stopped in emergency during stopping in emergency Prompting, when Fisrt fault indicator lamp MIL1 is lighted, the Electromagnetic Valve Circuit that illustrate to stop in emergency is likely to contact poor electrical resistance and become greatly Or the coil open circuit for the magnetic valve HV1 that stops in emergency or the loop open circuit elsewhere (open circuit of such as first switch module K1 switches), Certainly being also possible to damage including institute's power supply source causes for stream deficiency.

When the second malfunction indicator lamp MIL2, which is in, to be lighted, the Electromagnetic Valve Circuit that illustrates to stop in emergency is by the magnetic valve that stops in emergency Excessively stream switching control loop is cut off, and in overcurrent protection, and illustrates the magnetic valve that stops in emergency in Electromagnetic Valve Circuit that stops in emergency HV1 coil short, also it is possible to higher including institute's power supply source voltage certainly.

3rd malfunction indicator lamp MIL3 described above, which is used to stop when power supply DC1 fails, to be prompted, when the event of parking power supply the 3rd When barrier indicator lamp MIL3 is lighted, the power supply DC1 output voltages that illustrate to stop are less than first voltage type relay coil KV11 maintenance electricity Press or equal to zero, here when parking power supply DC1 output voltages less than first voltage type relay coil KV11 maintenance voltages or wait Power supply DC1 failures (or halting car power supply DC1 dead electricity or decompression) of stopping are regarded as when zero.

First voltage type relay coil KV11 described above rated voltage is more than parking power supply DC1 rated voltage, Be advantageous to the rated voltage for making first voltage type relay coil KV11 maintenance voltages close to parking power supply DC1, but ensure again The contact of first voltage type relay normally becomes dynamic from static, and the present invention selects first voltage type relay coil KV11 Rated voltage be equal to parking power supply DC1 rated voltage 106%.

When stopping in emergency when the electric current that magnetic valve HV1 coils flow through of stopping in emergency in its extinction current to maximum allowable When between electric current, the present invention assert that the coil for the magnetic valve HV1 that stops in emergency is in normal operating conditions, and otherwise, identification promptly stops Car Electromagnetic Valve Circuit breaks down.

The present invention assert that the output that can guarantee that the power supply DC1 that stopped during contact adhesive (action) of first voltage type relay is Normal output.

When first switch module K1 described above and second switch module K2 is serviceable condition：Receiving diesel engine master control During during (machine) control signal that what module was sent stop in emergency, the switch connection that accordingly controls, i.e. first switch module K1's opens Close and connect, second switch module K2 switch connection；(machine) control of stopping in emergency that diesel engine main control module sends is not being received During during signal processed, the switch accordingly controlled is off, i.e. the switch of first switch module K1 is off, Second switch module K2 switch is off.

It is described above receive that diesel engine main control module sends stop in emergency (machine) control signal when during, that is, Say the present invention diesel engine stop in emergency Electromagnetic Valve Circuit failover, warning circuit receiving diesel engine main control module hair Go out stop in emergency (machine) control signal when during, now diesel engine stops in emergency Electromagnetic Valve Circuit failover, warning circuit Control diesel engine is operated in stop in emergency period.

It is described above do not receive that diesel engine main control module sends stop in emergency (machine) control signal when during, also It is that stop in emergency Electromagnetic Valve Circuit failover, the warning circuit of diesel engine for saying the present invention is not receiving diesel engine master control mould During during (machine) control signal that what block was sent stop in emergency, now diesel engine stops in emergency Electromagnetic Valve Circuit failover, alarm Circuit is operated in non-controlling diesel engine and stopped in emergency period.

But in real work：Because standby magnetic valve HV2 frequency of use is not high, so second switch module K2 switch It is less likely to be damaged；But for the relatively standby magnetic valve HV2 of the magnetic valve HV1 that stops in emergency：Frequency of use is high, such as works as and stops in emergency Magnetic valve HV1 causes its coil short to be just easy to first switch module K1 switching burning short circuit after being used for multiple times, then non-tight Being stopped in emergency during jerk car, there is also excessively stream for Electromagnetic Valve Circuit.Therefore assert that described second switch module K2 is in the present invention Serviceable condition, first switch module K1 are unknown state.

Above-described diesel engine stop in emergency Electromagnetic Valve Circuit failover, warning circuit parking power supply DC1 with it is standby It is as follows with power supply DC2 handoff procedures：

(1) first voltage type relay two-way contact KV12 common port is connected with normal-closed end, is switched to stand-by power supply (DC2) to parking loop power supply；

3) stand-by power supply DC2 to parking loop power supply during, wait stop power supply DC1 output revert to normal when, first Voltage-type relay coil KV11 obtains electric, the contact action of first voltage type relay：

The stop in emergency control of Electromagnetic Valve Circuit failover, warning circuit of above-described diesel engine is stopped in emergency electromagnetism Valve HV1 and standby magnetic valve HV2 process are as follows：

2. the second current relay normally opened contact KI22 disconnects, the control pole of no triggering Continuity signal to controllable silicon SCR, Tertiary voltage type relay coil KV31 must not be electric, and the contact of tertiary voltage type relay is in static state, is serially connected in and stops in emergency Tertiary voltage type relay normally closed contact KV33 in Electromagnetic Valve Circuit is connected, and control alarm power supply DC3 indicates to Fisrt fault The tertiary voltage type relay two-way contact KV32 of lamp MIL1 and the second malfunction indicator lamp MIL2 power supplies common port and normally opened end Disconnect, the second malfunction indicator lamp MIL2 extinguishes；

(2) when the coil undercurrent for the magnetic valve HV1 that stops in emergency, that is, the electric current for flowing through the Electromagnetic Valve Circuit that stops in emergency are less than tightly During the extinction current of anxious electromagnetic valve for braking (HV1) coil, illustrate that first switch module K1 switch is possible to open circuit, and The contact of first current relay and the contact of the second current relay are in static state：

2. the second current relay normally opened contact KI22 disconnects, the control pole of no triggering Continuity signal to controllable silicon SCR, Tertiary voltage type relay coil KV31 must not be electric, and the contact of tertiary voltage type relay is in static state, is serially connected in and stops in emergency Tertiary voltage type relay normally closed contact KV33 in Electromagnetic Valve Circuit is connected, and control alarm power supply DC3 indicates to Fisrt fault The tertiary voltage type relay two-way contact KV32 of lamp MIL1 and the second malfunction indicator lamp MIL2 power supplies common port and normally opened end Disconnect, and connected with normal-closed end：

1. the second current relay normally opened contact KI22 is connected, there is control pole of the triggering and conducting signal to controllable silicon SCR, Controllable silicon SCR conducting is triggered, tertiary voltage type relay coil KV31 obtains electric, the contact action of tertiary voltage type relay：

C. after controllable silicon SCR conducting, wait to remove to controllable silicon SCR anode institute's power supply source or treat opening for first switch module K1 Shut-off discharges self-locking when opening, controllable silicon SCR cut-off, and the contact of tertiary voltage type relay is static state by Dynamic- Recovery, otherwise, Tertiary voltage type relay power state is always maintained at；

(1) standby magnetic valve HV2 is in loss of excitation；

1. controllable silicon SCR turns on before being stopped in emergency into non-controlling diesel engine, i.e., tertiary voltage type relay is in logical Electricity, then, the contact of tertiary voltage type relay keep being in operating state, i.e. control alarm power supply DC3 indicates to Fisrt fault The tertiary voltage type relay two-way contact KV32 of lamp MIL1 and the second malfunction indicator lamp MIL2 power supplies common port and normally opened end Connect, the tertiary voltage type relay normally closed contact KV33 being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects：

2. controllable silicon SCR is ended before being stopped in emergency into non-controlling diesel engine, if electric in the Electromagnetic Valve Circuit that stops in emergency Stream is less than or equal to the maximum allowed current for the magnetic valve HV1 coils that stop in emergency, then controllable silicon SCR holding cut-off, tertiary voltage type The contact of relay keeps being in static state, that is, controls alarm power supply DC3 to Fisrt fault indicator lamp MIL1 and the second failure The tertiary voltage type relay two-way contact KV32 of indicator lamp MIL2 power supplies common port disconnects with normally opened end, is serially connected in urgent Tertiary voltage type relay normally closed contact KV33 in electromagnetic valve for braking loop is connected：

3. controllable silicon (SCR) is in cut-off before being stopped in emergency into non-controlling diesel engine, if the magnetic valve that stops in emergency returns Electric current is more than the maximum allowed current for magnetic valve (HV1) coil that stops in emergency in road, then the contact of the second current relay is moved Make, the second current relay normally opened contact (KI22) is connected, controllable silicon (SCR) triggering and conducting, tertiary voltage type relay line Enclose (KV31) and obtain electric, the contact action of tertiary voltage type relay：

C. after controllable silicon SCR triggering and conducting, wait to remove to controllable silicon SCR anode institute's power supply source or treat first switch module K1 Controllable silicon SCR when switching off cut-off, i.e., the contact of tertiary voltage type relay by Dynamic- Recovery for static state, otherwise, the 3rd Voltage-type relay is always maintained at being powered.

The stop in emergency control of Electromagnetic Valve Circuit failover, warning circuit of above-described diesel engine is stopped in emergency electromagnetism Valve HV1 and standby magnetic valve HV2 process, in addition to：During control diesel engine stops in emergency, second switch module is assert K2 switch connection, controllable silicon SCR has been on before during entering control diesel engine and stopping in emergency, i.e. tertiary voltage type Relay coil KV31 is in "on" position, illustrates that first switch module K1 is opened before during control diesel engine stops in emergency Failure short circuit, and Electromagnetic Valve Circuit excessively stream of stopping in emergency are closed, and overcurrent protection has been carried out to the Electromagnetic Valve Circuit that stops in emergency, tightly The line segment that jerk car Electromagnetic Valve Circuit is controlled by tertiary voltage type relay normally closed contact KV33 disconnects, the first current mode relay The contact of device and the contact of the second current relay keep, in static state, being directly entered the line for the magnetic valve HV1 that stops in emergency Enclose undercurrent control, the first current relay normally-closed contact KI12 is connected, second voltage type relay coil KV21 obtain it is electric, the The contact action of two voltage-type relays, specifically has：

The stop in emergency control of Electromagnetic Valve Circuit failover, warning circuit of above-described diesel engine is stopped in emergency electromagnetism Valve HV1 and standby magnetic valve HV2 process, in addition to：

The stop in emergency control of Electromagnetic Valve Circuit failover, warning circuit of above-described diesel engine is stopped in emergency electromagnetism During valve HV1 and standby magnetic valve HV2：After the controllable silicon SCR conducting, wait to remove and powered to controllable silicon SCR anode Source, refer to wait to remove parking power supply DC1 and stand-by power supply DC2.

Claims

Electromagnetic Valve Circuit failover, warning circuit 1. diesel engine stops in emergency, including parking power supply (DC1), stand-by power supply (DC2), alarm power supply (DC3), first voltage type relay, second voltage type relay, tertiary voltage type relay, the first electricity Flow pattern relay, the second current relay, the magnetic valve that stops in emergency (HV1), standby magnetic valve (HV2), Fisrt fault instruction Lamp (MIL1), the second malfunction indicator lamp (MIL2), the 3rd malfunction indicator lamp (MIL3), first switch module (K1), second switch Module (K2), controllable silicon (SCR), resistance R1, resistance R2；Characterized in that, the first voltage type relay coil (KV11) Directly (DC1) and connect with parking power supply, positive pole and the first voltage type relay two-way contact (KV12) of parking power supply (DC1) Normally opened end is connected, and the positive pole of stand-by power supply (DC2) is connected with the normal-closed end of first voltage type relay two-way contact (KV12) Connect, the negative pole of stand-by power supply (DC2) is connected with the negative pole of parking power supply (DC1)；The switch of first switch module (K1) is successively It is normal to concatenate the first current relay coil (KI11), the second current relay coil (KI21), tertiary voltage type relay Closed contact (KV33), the magnetic valve that stops in emergency (HV1) coil after, the other end and first of the switch of first switch module (K1) The common port of voltage-type relay two-way contact (KV12) is connected, the other end of the coil of the magnetic valve that stops in emergency (HV1) with The negative pole of parking power supply (DC1) is connected, and first parking loop, institute are formed with parking power supply (DC1) or stand-by power supply (DC2) First parking loop is stated as the Electromagnetic Valve Circuit that stops in emergency；The switch of second switch module (K2) is sequentially connected in series standby magnetic valve (HV2) after coil, second voltage type relay normally open contact (KV22), the other end of the switch of second switch module (K2) with The common port of first voltage type relay two-way contact (KV12) is connected, second voltage type relay normally open contact (KV22) The other end is connected with the negative pole of parking power supply (DC1), and forming Article 2 with parking power supply (DC1) or stand-by power supply (DC2) stops Car loop, the Article 2 parking loop is the standby Electromagnetic Valve Circuit that stops in emergency；Second current relay normally opened contact (KI22) one end is connected with resistance R1 one end, resistance the R1 other end and tertiary voltage type relay coil (KV31) One end is simultaneously accessed on the switch of first switch module (K1) and the connecting line of the first current relay coil (KI11) after connecing, the The other end of three voltage-type relay coils (KV31) is connected with the anode of controllable silicon (SCR), and the second current relay is normal Open the other end of contact (KI22) and the control pole of controllable silicon (SCR) and resistance R2 one end phase and connect, the resistance R2 other end It is connected with the negative electrode phase of controllable silicon (SCR) and after connecing with the negative pole of parking power supply (DC1), with the power supply (DC1) or standby that stops Power supply (DC2) forms Article 3 parking loop, and the Article 3 parking loop is returned for magnetic valve excessively stream switching control of stopping in emergency Road；The switch and standby magnetic valve of one end access second switch module (K2) of first current relay normally-closed contact (KI12) (HV2) on the connecting line of coil, the other end concatenation second voltage type relay of the first current relay normally-closed contact (KI12) Negative connect of the device coil (KV21) afterwards with parking power supply (DC1) is connected, and is formed with parking power supply (DC1) or stand-by power supply (DC2) Article 4 parking loop, the Article 4 parking loop is magnetic valve undercurrent switching control loop of stopping in emergency；First voltage type Relay normally closed contact (KV13) concatenates the 3rd malfunction indicator lamp (MIL3) and (DC3) and connect with alarm power supply afterwards, with power supply of alarming (DC3) parking power-fail alarm circuit is formed；The common port of tertiary voltage type relay two-way contact (KV32) and alarm electricity The positive pole in source (DC3) is connected, and the normally opened end of tertiary voltage type relay two-way contact (KV32) concatenates the second malfunction indicator lamp (MIL2) negative pole afterwards with alarm power supply (DC3) is connected, and magnetic valve excessively stream alarm of stopping in emergency is formed with alarm power supply (DC3) Loop；The normal-closed end concatenation second voltage type relay normally open contact of tertiary voltage type relay two-way contact (KV32) (KV23), negative pole of the Fisrt fault indicator lamp (MIL1) afterwards with alarm power supply (DC3) is connected, and is formed with alarm power supply (DC3) Stop in emergency magnetic valve undercurrent alarm circuit；The control terminal of first switch module (K1) and the control terminal of second switch module (K2) It is connected after connected with each other with the output of diesel engine main control module.
Electromagnetic Valve Circuit failover, warning circuit 2. a kind of diesel engine according to claim 1 stops in emergency, its feature It is, the rated current of the first current relay coil (KI11), which is equal to, stops in emergency magnetic valve (HV1) coil most Small maintenance electric current；The rated current of the second current relay coil (KI21) is equal to magnetic valve (HV1) line that stops in emergency The maximum allowed current of circle.
Electromagnetic Valve Circuit failover, warning circuit 3. a kind of diesel engine according to claim 1 stops in emergency, its feature It is, described first voltage type relay two-way contact (KV12), second voltage type relay normally open contact (KV22), and The maximum current that tertiary voltage type relay normally closed contact (KV33) allows to flow through is equal to or the volume more than parking power supply (DC1) Determine electric current.
Electromagnetic Valve Circuit failover, warning circuit 4. a kind of diesel engine according to claim 2 stops in emergency, its feature It is, the extinction current of the described magnetic valve that stops in emergency (HV1) coil is to refer to guarantee to stop in emergency magnetic valve (HV1) minimum current of normal work.
Electromagnetic Valve Circuit failover, warning circuit 5. a kind of diesel engine according to claim 2 stops in emergency, its feature It is, the maximum allowed current of the described magnetic valve that stops in emergency (HV1) coil is to refer to guarantee and will not burn out stop in emergency The maximum operating currenbt of magnetic valve (HV1) coil.
Electromagnetic Valve Circuit failover, alarm electricity 6. a kind of diesel engine according to claims 1 to 3 any bar stops in emergency The implementation method on road, it is characterised in that comprise the following steps:

First, stop power supply (DC1) and stand-by power supply (DC2) handoff procedure

1) when stop power supply (DC1) output for it is normal when, first voltage type relay coil (KV11) it is electric, first voltage type after The contact action of electrical equipment：

(1) the common port of first voltage type relay two-way contact (KV12) and normally opened termination are logical, and parking power supply (DC1) is to parking Loop power supply；

(2) first voltage type relay normally closed contact (KV13) disconnects, and the 3rd malfunction indicator lamp (MIL3) is extinguished；

2) when the power supply (DC1) that stops fails, first voltage type relay coil (KV11) dead electricity, first voltage type relay Contact reverts to static state：

(1) the common port of first voltage type relay two-way contact (KV12) is connected with normal-closed end, is switched to stand-by power supply (DC2) To parking loop power supply；

(2) first voltage type relay normally closed contact (KV13) is connected, and the 3rd malfunction indicator lamp (MIL3) is lighted, and prompts user to stop Car power supply (DC1) fails；

2nd, the process of stop in emergency magnetic valve (HV1) and standby magnetic valve (HV2) is controlled

1) during control diesel engine stops in emergency, the switch connection of second switch module (K2) is assert, if entering control diesel oil Machine stop in emergency during before controllable silicon (SCR) be in cut-off, i.e., the contact of tertiary voltage type relay be in static state：

(1) when the coil of the magnetic valve that stops in emergency (HV1) is in normal operating conditions, that is, the Electromagnetic Valve Circuit that stops in emergency is flowed through Electric current illustrates first switch when the extinction current of the magnetic valve that stops in emergency (HV1) coil is between maximum allowed current The switch connection of module (K1), and the contact action of the first current relay, the contact of the second current relay are in quiet State：

1. the first current relay normally-closed contact (KI12) disconnects, second voltage type relay coil (KV21) must not be electric, the The contact of two voltage-type relays is in static state：

A. second voltage type relay normally open contact (KV22) disconnects, and the standby Electromagnetic Valve Circuit that stops in emergency must not be electric, standby electricity Magnet valve (HV2) is in loss of excitation；

B. second voltage type relay normally open contact (KV23) disconnects, and Fisrt fault indicator lamp (MIL1) extinguishes；

2. the second current relay normally opened contact (KI22) disconnects, the control terminal of no triggering Continuity signal to controllable silicon (SCR), Tertiary voltage type relay coil (KV31) must not be electric, and the contact of tertiary voltage type relay is in static state, is serially connected in and promptly stops Tertiary voltage type relay normally closed contact (KV33) in car Electromagnetic Valve Circuit is connected, and controls alarm power supply (DC3) to the first event Hinder the public affairs of indicator lamp (MIL1) and the tertiary voltage type relay two-way contact (KV32) of the second malfunction indicator lamp (MIL2) power supply End disconnects with normally opened end altogether, and the second malfunction indicator lamp (MIL2) is extinguished；

(2) when the coil undercurrent of the magnetic valve that stops in emergency (HV1), that is, the electric current for flowing through the Electromagnetic Valve Circuit that stops in emergency are less than promptly During the extinction current of electromagnetic valve for braking (HV1) coil, illustrate that the switch of first switch module (K1) is possible to breaking, and the The contact of one current relay and the contact of the second current relay are in static state：

1. the first current relay normally-closed contact (KI12) is connected, second voltage type relay coil (KV21) must be electric, second The contact action of voltage-type relay, i.e. second voltage type relay normally open contact (KV22) are connected, second voltage type relay Normally opened contact (KV23) is connected：Second voltage type relay normally open contact (KV22) is connected, and stop in emergency standby Electromagnetic Valve Circuit It is powered, standby magnetic valve (HV2) obtains magnetic；

2. the second current relay normally opened contact (KI22) disconnects, the control terminal of no triggering Continuity signal to controllable silicon (SCR), Tertiary voltage type relay coil (KV31) must not be electric, and the contact of tertiary voltage type relay is in static state, is serially connected in and promptly stops Tertiary voltage type relay normally closed contact (KV33) in car Electromagnetic Valve Circuit is connected, and controls alarm power supply (DC3) to the first event Hinder the public affairs of indicator lamp (MIL1) and the tertiary voltage type relay two-way contact (KV32) of the second malfunction indicator lamp (MIL2) power supply End disconnects with normally opened end altogether, and is connected with normal-closed end：

A. the common port of tertiary voltage type relay two-way contact (KV32) disconnects with normally opened end, the second malfunction indicator lamp (MIL2) Extinguish；

B. the common port of tertiary voltage type relay two-way contact (KV32) is connected with normal-closed end, treats that second voltage type relay is normal Contact (KV23) connection is opened, Fisrt fault indicator lamp (MIL1) is lighted, and the coil for prompting user to stop in emergency magnetic valve (HV1) is owed Stream；

(3) when the coil excessively stream of the magnetic valve that stops in emergency (HV1), that is, the electric current for flowing through the Electromagnetic Valve Circuit that stops in emergency are more than promptly During the maximum allowed current of electromagnetic valve for braking (HV1) coil, illustrate first switch module (K1) switch connection, and the first electric current The contact of type relay and the contact of the second current relay act：

1. the second current relay normally opened contact (KI22) is connected, there is control terminal of the triggering and conducting signal to controllable silicon (SCR), Controllable silicon (SCR) conducting is triggered, tertiary voltage type relay coil (KV31) must be electric, and the contact of tertiary voltage type relay is moved Make：

A. the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, and cut-out is urgent Electromagnetic valve for braking loop is powered, and to stopping in emergency, Electromagnetic Valve Circuit carries out short-circuit protection；

B. the 3rd that alarm power supply (DC3) is powered to Fisrt fault indicator lamp (MIL1) and the second malfunction indicator lamp (MIL2) is controlled The common port of voltage-type relay two-way contact (KV32) and normally opened termination are logical, and are disconnected with normal-closed end：

The common port of tertiary voltage type relay two-way contact (KV32) and normally opened termination are logical, the second malfunction indicator lamp (MIL2) point Coil excessively stream that is bright, prompting user to stop in emergency magnetic valve (HV1)；

The common port of tertiary voltage type relay two-way contact (KV32) disconnects with normal-closed end, and Fisrt fault indicator lamp (MIL1) puts out Go out；

C. after controllable silicon (SCR) conducting, wait to remove to controllable silicon (SCR) anode institute's power supply source or treat first switch module (K1) Controllable silicon (SCR) ends when switching off, and the contact of tertiary voltage type relay is by Dynamic- Recovery to be static, and otherwise, the 3rd is electric Die mould relay is always maintained at being powered；

2. the first current relay normally-closed contact (KI12) disconnects, second voltage type relay coil (KV21) must not be electric, the The contact of two voltage-type relays is in static state, i.e. second voltage type relay normally open contact (KV22) disconnects, and stops in emergency standby With Electromagnetic Valve Circuit no power, standby magnetic valve (HV2) loss of excitation：

Until when the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, first The contact of current relay reverts to static state, i.e. the first current relay normally-closed contact (KI12) is connected, second voltage type Relay coil (KV21) obtains electric, the contact action of second voltage type relay, second voltage type relay normally open contact (KV22) connect, second voltage type relay normally open contact (KV23) is connected：

A. second voltage type relay normally open contact (KV22) is connected, then the standby Electromagnetic Valve Circuit that stops in emergency is powered, standby electricity Magnet valve (HV2) obtains magnetic；

B. second voltage type relay normally open contact (KV23) is connected, and does not influence the Fisrt fault indicator lamp in OFF state (MIL1)；

2) during non-controlling diesel engine stops in emergency, switching off for second switch module (K2) is assert：

(1) standby magnetic valve (HV2) is in loss of excitation；

(2) second voltage type relay coil (KV21) must not be electric, and the contact of second voltage type relay is in static, i.e., and second Voltage-type relay normally open contact (KV23) disconnects, and Fisrt fault indicator lamp (MIL1) extinguishes；

(3) when the switch of first switch module (K1) is in short circuit, then tertiary voltage type relay keeps entering non-controlling diesel engine Working condition before stopping in emergency：

1. controllable silicon (SCR) is on before being stopped in emergency into non-controlling diesel engine, i.e., tertiary voltage type relay is in It is powered, then, the contact of tertiary voltage type relay keeps being in operating state, that is, controls alarm power supply (DC3) to Fisrt fault Indicator lamp (MIL1) and the second malfunction indicator lamp (MIL2) power supply tertiary voltage type relay two-way contact (KV32) it is public End and normally opened termination are logical, and the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency is disconnected Open：

A. the common port of tertiary voltage type relay two-way contact (KV32) and normally opened termination are logical, and the second failure being remain on refers to Show lamp (MIL2), prompt coil excessively stream that user enters before non-controlling diesel engine stops in emergency the magnetic valve (HV1) that stops in emergency and The switch failure short circuit of first switch module (K1)；

B. the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, and stops in emergency The line segment that Electromagnetic Valve Circuit is controlled by tertiary voltage type relay normally closed contact (KV33) disconnects；

2. controllable silicon (SCR) is in cut-off before being stopped in emergency into non-controlling diesel engine, if in the Electromagnetic Valve Circuit that stops in emergency Electric current is less than or equal to the maximum allowed current of magnetic valve (HV1) coil of stopping in emergency, then controllable silicon (SCR) keeps cut-off, and the 3rd The contact of voltage-type relay keeps being in static state, that is, controls alarm power supply (DC3) to Fisrt fault indicator lamp (MIL1) Break with the common port of the tertiary voltage type relay two-way contact (KV32) of the second malfunction indicator lamp (MIL2) power supply with normally opened end Open, the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency is connected：

A. the common port of tertiary voltage type relay two-way contact (KV32) disconnects with normally opened end, the second malfunction indicator lamp (MIL2) Extinguish；

B. the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency is connected, and is stopped in emergency The line segment that Electromagnetic Valve Circuit is controlled by tertiary voltage type relay normally closed contact (KV33) connects；

3. controllable silicon (SCR) is in cut-off before being stopped in emergency into non-controlling diesel engine, if in the Electromagnetic Valve Circuit that stops in emergency Electric current is more than the maximum allowed current for magnetic valve (HV1) coil that stops in emergency, then the contact action of the second current relay, the Two current relay normally opened contacts (KI22) are connected, controllable silicon (SCR) triggering and conducting, tertiary voltage type relay coil (KV31) electric, the contact action of tertiary voltage type relay is obtained：

A. the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency disconnects, and cut-out is urgent Electromagnetic valve for braking loop is powered, and to stopping in emergency, Electromagnetic Valve Circuit carries out short-circuit protection；

B. the 3rd that alarm power supply (DC3) is powered to Fisrt fault indicator lamp (MIL1) and the second malfunction indicator lamp (MIL2) is controlled The common port of voltage-type relay two-way contact (KV32) and normally opened termination are logical, and the second malfunction indicator lamp (MIL2) is lighted, and is prompted User is stopped in emergency the coil excessively stream of magnetic valve (HV1) during non-controlling diesel engine stops in emergency, and and represents first switch The switch failure short circuit of module (K1)；

C. after controllable silicon (SCR) conducting, wait to remove to controllable silicon (SCR) anode institute's power supply source or treat first switch module (K1) Controllable silicon (SCR) ends when switching off, and the contact of tertiary voltage type relay is by Dynamic- Recovery to be static, and otherwise, the 3rd is electric Die mould relay is always maintained at being powered.

(4) switching off as first switch module (K1), then, controllable silicon (SCR) cut-off, the contact of tertiary voltage type relay In static state, i.e. control alarm power supply (DC3) is powered to Fisrt fault indicator lamp (MIL1) and the second malfunction indicator lamp (MIL2) Common port and the normally opened end of tertiary voltage type relay two-way contact (KV32) disconnect, be serially connected in the Electromagnetic Valve Circuit that stops in emergency In tertiary voltage type relay normally closed contact (KV33) connect：

A. the common port of tertiary voltage type relay two-way contact (KV32) disconnects with normally opened end, the second malfunction indicator lamp (MIL2) Extinguish；

B. the tertiary voltage type relay normally closed contact (KV33) being serially connected in the Electromagnetic Valve Circuit that stops in emergency is connected, and is stopped in emergency The line segment that Electromagnetic Valve Circuit is controlled by tertiary voltage type relay normally closed contact (KV33) connects.
The implementation method of Electromagnetic Valve Circuit failover, warning circuit 7. diesel engine according to claim 6 stops in emergency, Characterized in that, also comprise the following steps:

In stand-by power supply (DC2) to during parking loop power supply, when power supply (DC1) output of stopping reverts to normal, first is electric Die mould relay coil (KV11) obtains electric, the contact action of first voltage type relay：

(1) the common port of first voltage type relay two-way contact (KV12) and normally opened termination are logical, recover parking power supply (DC1) to Stop loop power supply；

(2) first voltage type relay normally closed contact (KV13) disconnects, and the 3rd malfunction indicator lamp (MIL3) lighted is extinguished.
The implementation method of Electromagnetic Valve Circuit failover, warning circuit 8. diesel engine according to claim 6 stops in emergency, Characterized in that, also include：The process of stop in emergency magnetic valve (HV1) and standby magnetic valve (HV2) is controlled, in control diesel engine During stopping in emergency, the switch connection of second switch module (K2) is assert, can before during entering control diesel engine and stopping in emergency Control silicon (SCR) has been on, i.e., tertiary voltage type relay is in "on" position, illustrates to stop in emergency in control diesel engine The switch failure short circuit of first switch module (K1) before period, and Electromagnetic Valve Circuit excessively stream of stopping in emergency, and to the electricity that stops in emergency Magnet valve loop has carried out overcurrent protection, and the Electromagnetic Valve Circuit that stops in emergency is controlled by tertiary voltage type relay normally closed contact (KV33) Line segment disconnect, the contact of the contact of the first current relay and the second current relay is kept in static state, directly Coil undercurrent into the magnetic valve that stops in emergency (HV1) is controlled, and the first current relay normally-closed contact (KI12) is connected, and second Voltage-type relay coil (KV21) must be electric, the contact action of second voltage type relay, specifically has：

1) the 3rd that alarm power supply (DC3) is powered to Fisrt fault indicator lamp (MIL1) and the second malfunction indicator lamp (MIL2) is controlled The common port of voltage-type relay two-way contact (KV32) and normally opened termination are logical, and are disconnected with normal-closed end：

(1) the common port of tertiary voltage type relay two-way contact (KV32) and normally opened termination are logical, and the second failure being remain on refers to Show lamp (MIL2), prompt user to stop in emergency the coil excessively stream of magnetic valve (HV1) and the switch failure of first switch module (K1) Short circuit；

(2) the common port of tertiary voltage type relay two-way contact (KV32) disconnects with normal-closed end, and the Fisrt fault for keeping extinguishing refers to Show lamp (MIL1)；

2) second voltage type relay normally open contact (KV22) is connected, and the standby Electromagnetic Valve Circuit that stops in emergency is powered, standby electromagnetism Valve (HV2) obtains magnetic；

3) second voltage type relay normally open contact (KV23) is connected, and does not influence the Fisrt fault indicator lamp in OFF state (MIL1)。
Electromagnetic Valve Circuit failover, the realization side of warning circuit 9. the diesel engine according to claim 6 or 8 stops in emergency Method, it is characterised in that also include:

After controllable silicon (SCR) turns on, the second current relay normally opened contact (KI22) disconnects, and does not influence controllable silicon (SCR) Turn on self-locking state.
Electromagnetic Valve Circuit failover, the realization side of warning circuit 10. diesel engine according to claim 6 stops in emergency Method, it is characterised in that after controllable silicon (SCR) triggering and conducting, discharged when removing to controllable silicon (SCR) anode institute's power supply source Self-locking, refer to when parking power supply (DC1) and stand-by power supply (DC2) is removed, controllable silicon (SCR) cut-off, tertiary voltage type relay The contact of device is static state by Dynamic- Recovery.