CN108223157A

CN108223157A - A kind of diesel engine stops in emergency circuit and its implementation

Info

Publication number: CN108223157A
Application number: CN201711371517.1A
Authority: CN
Inventors: 齐亮; 王长宝; 邵长斌; 於跃成
Original assignee: Jiangsu University of Science and Technology
Current assignee: Jiangsu University of Science and Technology
Priority date: 2017-12-19
Filing date: 2017-12-19
Publication date: 2018-06-29

Abstract

It stops in emergency circuit and its implementation the invention discloses a kind of diesel engine, circuit is：There is deficient, over-current detection electric current relay parking major loop including string, stop back-up circuit, the switch failure fault control circuit of major loop overcurrent and its module, major loop undercurrent switching control circuit, the switch failure short-circuit detecting circuit of module in major loop, the pre- energization of back-up circuit coil and breaking measure loop and corresponding alarm circuit.Method is：During stopping in emergency, major loop overcurrent/undercurrent is switched to back-up circuit work, and spare coil is powered in advance in back-up circuit enabling is preceding to its circuit, when major loop breaks down and is switched to back-up circuit, so as to solenoid valve quick acting parking of stopping in emergency；When switch short carries out physical break protection in major loop overcurrent and its circuit, overcurrent protection is waited to remove power supply and is stopped, and switch short is protected and removed when stopping in emergency；To spare coil, whether open circuit detection is prompted during non-emergent parking.

Description

A kind of diesel engine stops in emergency circuit and its implementation

Technical field

The invention belongs to diesel engine safety protection technique fields, and in particular to diesel engine stop in emergency Electromagnetic Valve Circuit failure Switching, warning circuit and its implementation.

Background technology

At present：The emergency stopping system of diesel engine dies and oil-break two ways to stopping in emergency for diesel engine, dies Mode is the installation Electromagnetic Control valve at inlet and outlet mouth, can in case of emergency control valve be died；Oil-break mode be Install oil-break Electromagnetic Control valving on oil circuit additional, it can urgent oil-break when failure occurs.These Electromagnetic Control valves are i.e. logical The often signified solenoid valve that stops in emergency.It is designed when the solenoid valve that the solenoid valve that stops in emergency uses is normal-closed electromagnetic valve The Electromagnetic Valve Circuit that stops in emergency stops for degaussing (dead electricity)；When the solenoid valve that the solenoid valve that stops in emergency uses is normal-open electromagnetic valve When it is designed stop in emergency Electromagnetic Valve Circuit for magnetic (energization) stops.Magnetic (energization) parking is stopped and obtains in degaussing (dead electricity) In two methods, what prior art Literature was recorded：Diesel engine died with degaussing or the solenoid valve of oil-break setting it is urgent There are many Electromagnetic Valve Circuit monitoring alarm method in vehicle-parking circuit, just do not sketch herein, only to the main problem of degaussing parking method It reiterates：It misses the bus and stops！When parking power loss and/or the Electromagnetic Valve Circuit that stops in emergency disconnect, diesel engine mistakenly stop vehicle influences bavin Oil machine normal operation.And diesel engine is returned with obtaining solenoid valve in the circuit that stops in emergency that magnetic is died or the solenoid valve of oil-break is set Road monitoring alarm method is seldom.Diesel engine is worked to obtain the circuit that stops in emergency that magnetic is died or the solenoid valve of oil-break is set Cheng Shi：The solenoid valve that stops in emergency when diesel engine works normally is in dead electricity (loss of excitation) state, that is, solenoid valve dead electricity of stopping in emergency During state its control die, oil-break valve is logical；The solenoid valve that stops in emergency is led to when in urgent and significant trouble Electricity (magnetic) closes the dying of its control, oil-break valve, realizes that diesel engine stops in emergency.However, for diesel engine with magnetic into In the circuit that stops in emergency that row is died or the solenoid valve of oil-break is set, when need to stop in emergency, solenoid valve normal power-up of stopping in emergency Diesel engine ability emergency stop, when line fracture, coil open circuit, coil short and power supply electricity occurs in the electromagnetic valve coil that stops in emergency Road loose contact need to stop in emergency when failures, can not just be closed by the solenoid valve that stops in emergency its control die, oil cut-off valve Door, leads to failure of stopping in emergency, so as to which the safety for making diesel engine cannot ensure.Therefore for magnetic is died or oil-break The diesel engine of solenoid valve setting stops in emergency circuit, to ensure the execution of diesel engine (diesel-driven generator) safe shutdown, is badly in need of pair Whether the corresponding Electromagnetic Valve Circuit that stops in emergency, which fails, is detected and alarms.Although being documented, as number of patent application is： A kind of diesel engine of 201510846141.X stops in emergency Electromagnetic Valve Circuit failure alarm circuit and its alarm method, equipped with spare The redundant configuration of power supply and solenoid valve (being similarly normal-open electromagnetic valve) solves：Stand-by power supply is switched to during parking power loss Power supply；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency when stopping in emergency, be switched to spare solenoid valves work, pass through The dying of spare solenoid valve closing control, oil-break access.Perfect setting is seemed actually to can not be achieved at all：Stop power supply Stand-by power supply power supply is switched to during dead electricity；The Electromagnetic Valve Circuit that stops in emergency when control is stopped in emergency disconnects, and is switched to standby electricity Magnet valve energization work passes through the dying of spare solenoid valve closing control, oil-break access.About when stop power loss when can not possibly Being switched to the reasons why stand-by power supply is powered is：Because specific control parking power supply and the current relay line of stand-by power supply switching Enclose (the second current relay coil) rated current be greater than or equal to parking power supply rated current, and with the current mode after The rated current that can not possibly be greater than or equal to parking power supply using LED as the electric current that the first alarm lamp flows through of electric apparatus coil concatenation, Otherwise will not with LED as alarm lamp；When stop power loss when, it is assumed that flow through and the current relay coil tandem It is greater than or equal to the rated current of parking power supply using LED as the electric current that the first alarm lamp flows through, current relay completion stops Vehicle power supply and stand-by power supply switch operating, so the rated current of requirement alarm power supply is greater than or equal to parking power supply again Rated current, otherwise cannot normally complete switching parking power supply and stand-by power supply and switch；Again because with using LED as the second alarm The rated current of current relay coil (third current relay coil) that lamp string connects, which also requires that be greater than or equal to, stops The rated current of vehicle power supply so in order to ensure alarm power supply normal work, just necessarily requires the specified electricity of alarm power supply It flows more than or equal to two times of rated current of parking power supply or more, and the rated current for power supply of alarming actually in engineering design It is required that can not possibly be relevant with the rated current for the power supply that stops, the current requirements individually flowed through with the alarm lamp for power supply power supply of alarming It is also impossible to current relay coil requirement relevant with the rated current for the power supply that stops and with power supply power supply of alarming Rated current be also impossible to stop power supply rated current it is relevant, equally unlikely require what each alarm lamp flowed through Electric current is greater than or equal to the rated current of the power supply for its power supply.About the Electromagnetic Valve Circuit that stops in emergency when control is stopped in emergency It disconnects, it is impossible to which being switched to the reasons why spare solenoid valves work is：It is serially connected in the current mode for the Electromagnetic Valve Circuit that stops in emergency Identification is less than the situation that the Electromagnetic Valve Circuit that stops in emergency disconnects at all for relay (the first current relay), because being serially connected in tight Its is specified for current relay coil (the first current relay coil) of the emergency stop vehicle Electromagnetic Valve Circuit invention setting requirements Electric current is greater than or equal to the rated current of parking power supply, so as to identify less than emergency stop vehicle Electromagnetic Valve Circuit disconnection, tool at all Body the reason is that：1. the situation of the short circuit for the Electromagnetic Valve Circuit that stops in emergency can only be recognized, because stopping in emergency Electromagnetic Valve Circuit just When normal open electricity works, the normal current of set generation can not possibly be more than or equal to the rated current of parking power supply, if institute The electric current of generation is greater than or equal to the rated current of parking power supply, that Electromagnetic Valve Circuit that stops in emergency certainly occurs short-circuit existing As；2. when the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency does not recognize the volume more than or equal to parking power supply Constant current, the Electromagnetic Valve Circuit institute galvanization that can only illustrate to stop in emergency are in normal range (NR) or because loose contact resistance become high current It is equal to zero less than normal value or direct breaking current；3. because it is serially connected in the current relay for the Electromagnetic Valve Circuit that stops in emergency only Can recognize the Electromagnetic Valve Circuit that stops in emergency short circuit situation, so as to occur stopping in emergency Electromagnetic Valve Circuit institute's galvanization no matter In normal, when being also less than normal (such as open circuit)：Assuming that the third current relay coil being serially connected on the second alarm lamp Institute's galvanization is greater than or equal to the rated current of parking power supply, then spare solenoid valve is similarly in work once electrified state；Actually The third current relay coil institute's galvanization being serially connected on the second alarm lamp can not possibly be more than or equal to the volume of parking power supply Constant current so when no matter the Electromagnetic Valve Circuit institute's galvanization that stops in emergency is in normal, is also less than standby when normal (such as open circuit) It must not electricity with solenoid valve；4. because promptly stop when the current relay for being serially connected in the Electromagnetic Valve Circuit that stops in emergency can only recognize The situation of the short circuit of vehicle Electromagnetic Valve Circuit, when the electric current for the Electromagnetic Valve Circuit that stops in emergency is greater than or equal to the specified electricity of parking power supply During stream, to stopping in emergency, Electromagnetic Valve Circuit is not cut off, in the same old way in energized state, and the spare electromagnetism that has been turned off that there is no problem Valve, therefore the Electromagnetic Valve Circuit short-circuit protection work that stops in emergency is not had, spare solenoid valve can not be switched to and stopped in emergency, when Can not so overload protective function be played to parking power supply.Further reaffirm：Because be serially connected in two current modes on alarm lamp after The rated current of electric apparatus coil is required to the rated current for being greater than or equal to parking power supply, and the rated current of hardly possible to alarm power supply is big In or equal to parking power supply two times of rated current or more！And each with LED as alarm lamp light when the electric current that flows through it is big In or equal to parking power supply rated current！Otherwise, the current relay being serially connected on alarm lamp is had no idea work.Certainly Also number of patent application is：201510845456.2 a kind of diesel-driven generator stop in emergency Electromagnetic Valve Circuit failure alarm circuit And its alarm method, the redundant configuration equipped with stand-by power supply and solenoid valve (being similarly normal-open electromagnetic valve) solve：Stop power supply Stand-by power supply power supply is switched to during dead electricity；Control recognizes Electromagnetic Valve Circuit disconnection of stopping in emergency when stopping in emergency, be switched to standby It is worked with solenoid valves, passes through the dying of spare solenoid valve closing control, oil-break access.Emitting seemingly realizes above-mentioned function, but To be in addition to there are number of patent application：201510846141.X a kind of diesel engine stop in emergency Electromagnetic Valve Circuit failure alarm circuit And its alarm method it is all there are the problem of and defect, it is also straight for electricity caused by diesel-driven generator there are power supply used in alarm lamp Power supply is connect, alarm lamp indicates to can't see at all after diesel-driven generator emergency stop vehicle, because when controlling diesel-driven generator emergency stop, user It alarm lamp can not possibly be stared at sees, it may be noted that once alarm lamp instruction state only after emergency stop, however diesel-driven generator emergency stop 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 Advantageous effect content described in bright book is seen：Diesel engine (diesel generator) stop in emergency Electromagnetic Valve Circuit Failure Alarm electricity Road can carry out self-shield in time in device fails, to ensure its Electromagnetic Valve Circuit normal work of stopping in emergency, so as to Realize the automatic emergency stop-working protection of diesel engine (diesel generator) in abnormal cases.Further illustrate number of patent application The attached drawing of 201510846141.X and number of patent application 201510845456.2 is diesel engine main control module to diesel engine (diesel engine Generator) the Electromagnetic Valve Circuit failure alarm circuit that stops in emergency send out emergency shutdown instruction, control switch module switch connection after Diesel engine (diesel generator) stop in emergency Electromagnetic Valve Circuit failure alarm circuit structure diagram, that is to say, that patent Shen Please the attached drawing of number 201510846141.X and number of patent application 201510845456.2 be diesel engine (bavin when stopping in emergency Diesel engine) stop in emergency Electromagnetic Valve Circuit failure alarm circuit structure diagram, so as to furtherly understand patent Shen Please number 201510846141.X and the diesel engine (diesel generator) described in number of patent application 201510845456.2 use Stop in emergency solenoid valve for magnetic electromagnetic valve for braking.

It is well-known：In working process of diesel engine, as long as the Electromagnetic Valve Circuit that stops in emergency is normal, spare solenoid valve is just constantly in Idle state, the whether breaking user of coil of spare solenoid valve can not know.When stopping in emergency, if the solenoid valve that stops in emergency returns Road is abnormal (such as undercurrent), the spare Electromagnetic Valve Circuit being just switched to stops in emergency, but at this time if spare solenoid valve Coil is in open circuit, then the spare Electromagnetic Valve Circuit being switched to will be unable to stop in emergency by spare solenoid valve.

It is well-known simultaneously：Redundancy is carried out using two electromagnetic valve for braking, realization is reliably stopped in emergency, but installs inconvenience, and It is of high cost.

Invention content

The purpose of the present invention in order to solve defect of the existing technology, for magnetic is died or the electromagnetism of oil-break The diesel engine of valve setting stops in emergency, and provides a kind of diesel engine and stops in emergency circuit and its implementation, stop in emergency electromagnetism Valve uses Double coil electromagnetic valve, and the function of realization has：Parking power-fail is switched to stand-by power supply power supply, works as when stopping in emergency Solenoid valve main coil circuit undercurrent, the overcurrent of stopping in emergency are switched to spare coil circuit and stop in emergency, and stop in emergency electromagnetism Also carry out short-circuit protection when valve main coil circuit overcurrent or switch failure short circuit, guarantee is stopped in emergency circuit normal work and anti- Only mistakenly stop；To spare coil, whether open circuit is detected identification during the non-emergent parking of diesel engine；It stops in emergency in diesel engine Period, spare coil enable before be powered in advance to it, it is to be cut change to spare coil work when, spare coil rapidly enters just Normal open stream obtains magnetic, that is, the valve of control is closed in solenoid valve quick acting of stopping in emergency, and is stopped in emergency；And failure is carried out Indicator light is prompted respectively.

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

A kind of diesel engine stops in emergency circuit, including parking power supply DC1, stand-by power supply DC2, alarm power supply DC3, the first electricity Die mould relay, second voltage type relay, tertiary voltage type relay, the 4th voltage-type relay, the 5th voltage-type relay Device, the first current relay, the second current relay, the solenoid valve that stops in emergency, Fisrt fault indicator light MIL1, the second event Barrier indicator light MIL2, third malfunction indicator lamp MIL3, the 4th malfunction indicator lamp MIL4, the 5th malfunction indicator lamp MIL5, first open Close module K1, second switch module K2, switching tube 100, switching tube 200, diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, diode D7, diode D8, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, electricity Hinder R6, resistance R7, controllable silicon SCR；The solenoid valve that stops in emergency stops in emergency solenoid valve for twin coil, that is, stop in emergency electromagnetism The coil of valve is made of spare two groups of coils of advocating peace；The first voltage type relay coil KV11 directly with stop power supply DC1 And connect, the anode of parking power supply DC1 is connected with the normally open end of first voltage type relay two-way contact KV12, stand-by power supply The anode of DC2 is connected with the normal-closed end of first voltage type relay two-way contact KV12, the cathode of stand-by power supply DC2 and parking The cathode of power supply DC1 is connected；First current relay coil KI11 be sequentially connected in series the second current relay coil KI21, Tertiary voltage type relay normally closed contact KV33, the solenoid valve main coil VC1 that stops in emergency, first switch module K1 switch after, The other end of first current relay coil KI11 is connected with the common end of first voltage type relay two-way contact KV12, The other end of the switch of first switch module K1 is connected with the cathode for the power supply DC1 that stops, with parking power supply DC1 or stand-by power supply DC2 forms first parking circuit, and first parking circuit is the major loop that stops in emergency, that is, stop in emergency solenoid valve main line Enclose circuit；The solenoid valve spare coil VC2 that stops in emergency is sequentially connected in series second voltage type relay normally open contact KV22, second switch After the switch of module K2, the other end and the first voltage type relay two-way contact of the solenoid valve spare coil VC2 that stops in emergency The common end of KV12 is connected, and the other end of the switch of second switch module K2 is connected with the cathode for the power supply DC1 that stops, with stopping Vehicle power supply DC1 or stand-by power supply DC2 forms Article 2 parking circuit, and the Article 2 parking circuit is stops in emergency spare time Road, that is, solenoid valve spare coil circuit of stopping in emergency；One end of second current relay normally opened contact KI22 is with resistance R6's One end is connected, and the other end of resistance R6 and one end phase of tertiary voltage type relay coil KV31 simultaneously access first voltage after connecing The common end of type relay two-way contact KV12, the other end of tertiary voltage type relay coil KV31 and the sun of controllable silicon SCR Pole is connected, and the one of the other end and resistance R7 of the control pole of controllable silicon SCR and the second current relay normally opened contact KI22 End mutually simultaneously connects, the cathode of controllable silicon SCR and the other end phase of resistance R7 and after connecing access parking power supply DC1 cathode, the 4th is electric One end of die mould relay normally open contact KV42 is connected with the anode of controllable silicon SCR, the 4th voltage-type relay normally open contact The other end of KV42 is connected with the anode of diode D7, and the cathode of diode D7 is connected with the anode of diode D8, two poles The cathode of pipe D8 is connected with the cathode for the power supply DC1 that stops, and Article 3 parking is formed with parking power supply DC1 or stand-by power supply DC2 Circuit, Article 3 parking circuit are that the stop in emergency switch failure fault control of major loop overcurrent and first switch module returns Road；One end of first current relay normally-closed contact KI12 and the common end phase of first voltage type relay two-way contact KV12 Connection, access second voltage type relay normally open contact KV22 and the after other end concatenation second voltage type relay coil KV21 On the connecting line of two switch module K2 switches, Article 4 parking circuit is formed with parking power supply DC1 or stand-by power supply DC2, it is described Article 4 parking circuit is major loop undercurrent switching control circuit of stopping in emergency；The 4th voltage-type relay coil KV41's One end is connected with the common end of first voltage type relay two-way contact KV12, the hot end of the other end and switching tube 100 It is connected, the cold end of switching tube 100 accesses the company for the solenoid valve main coil VC1 and first switch module K1 switches that stop in emergency In wiring, one end of resistance R1 is connected with the common end of first voltage type relay two-way contact KV12, the other end and two poles The anode of pipe D1 and the anode of diode D3 are connected with each other, the cathode access second voltage type relay normally open contact of diode D3 On the connecting line of KV22 and second switch module K2 switches, the cathode of diode D1 is connected with the anode of diode D2, two poles The cathode of pipe D2 and the control terminal of switching tube 100 and one end of resistance R2 are connected with each other, the other end access parking electricity of resistance R2 The cathode of source DC1 forms Article 5 parking circuit with parking power supply DC1 or stand-by power supply DC2, and the Article 5 parking circuit is The switch failure short-circuit detecting circuit for the first switch module in major loop of stopping in emergency；The electricity that stops in emergency is accessed in one end of resistance R3 On the connecting line of magnet valve spare coil VC2 and second voltage type relay normally open contact KV22, the other end of resistance R3 and two poles The anode of pipe D4 and the anode of diode D6 are connected with each other, the cathode access second voltage type relay normally open contact of diode D4 On the connecting line of KV22 and second switch module K2 switches, the cathode of diode D6 is connected with the anode of diode D5, two poles The cathode of pipe D5 is connected with one end of resistance R4, and the one of the other end of resistance R4 and the control terminal of switching tube 200 and resistance R5 Hold connected with each other, the cathode of the other end access parking power supply DC1 of resistance R5, cold end and the parking power supply of switching tube 200 The cathode of DC1 is connected, and first voltage is accessed after the 5th voltage-type relay coil KV51 of hot end concatenation of switching tube 200 The common end of type relay two-way contact KV12 forms Article 6 parking circuit, institute with parking power supply DC1 or stand-by power supply DC2 Stating Article 6 parking circuit, energization and open circuit detect back in advance for the solenoid valve spare coil that stops in emergency in the back-up circuit that stops in emergency Road；With alarm power supply DC3 and connecing after first voltage type relay normally closed contact KV13 concatenations third malfunction indicator lamp MIL3, with report Alert power supply DC3 forms parking power-fail alarm circuit；The common end of tertiary voltage type relay two-way contact KV32 and alarm The anode of power supply DC3 is connected, and the normally open end of tertiary voltage type relay two-way contact KV32 concatenates the second malfunction indicator lamp Cathode after MIL2 with the power supply DC3 that alarms is connected, and stop in emergency major loop overcurrent and first switch are formed with alarm power supply DC3 Module Fail alarm circuit；The normal-closed end concatenation second voltage type relay normally open of tertiary voltage type relay two-way contact KV32 Cathode after contact KV23, Fisrt fault indicator light MIL1 with the power supply DC3 that alarms is connected, and is formed with alarm power supply DC3 urgent Stop major loop undercurrent alarm circuit；4th voltage-type relay normally open contact KV43 concatenate the 4th malfunction indicator lamp MIL4 after with Alarm power supply DC3 simultaneously connects, and the switch failure short-circuit alarming circuit of first switch module is formed with alarm power supply DC3；5th voltage Type relay normally open contact KV52 power supply DC3 and connects after concatenating the 5th malfunction indicator lamp MIL5 with alarm, with power supply DC3 structures of alarming Into solenoid valve spare coil breaking alarming circuit of stopping in emergency；The control terminal and second switch module of the first switch module K1 The control terminal of K2 is connected with each other to be connected afterwards with the output of diesel engine main control module；The switching tube 100 is N-type metal-oxide-semiconductor or institute Switching tube 100 is stated as NPN type triode；The switching tube 200 is N-type metal-oxide-semiconductor or the switching tube 200 is three pole of NPN type Pipe.

The above-described solenoid valve that stops in emergency stops in emergency solenoid valve for twin coil, that is, the coil for the solenoid valve that stops in emergency By advocating peace, spare two groups of coils form, and any of which group coil is powered in two groups of coils or two groups of coils are powered simultaneously, promptly stops Vehicle solenoid valve obtain magnetic action close its control die or the valve of oil-break, realize diesel engine stop in emergency；Two groups of coils are During power failure state, the solenoid valve that stops in emergency is in loss of excitation state, solenoid valve control of stopping in emergency die or the valve of oil-break at In unlatching；It stops in emergency and is set as the solenoid valve main coil VC1 that stops in emergency, another group of setting for one group in two groups of coils of solenoid valve For the solenoid valve spare coil VC2 that stops in emergency.

The rated current of above-described first current relay coil KI11 is set equal to solenoid valve master of stopping in emergency The extinction current of coil VC1；The rated current of the second current relay coil KI21 is set equal to stop in emergency The maximum allowed current of solenoid valve main coil VC1.

Above-described first voltage type relay two-way contact KV12, second voltage type relay normally open contact KV22, And the maximum currents that allow to flow through of tertiary voltage type relay normally closed contact KV33 are equal to or the volume more than parking power supply DC1 Constant current.

The above-described extinction current for stopping in emergency solenoid valve main coil VC1 refers to：Ensure the electromagnetism that stops in emergency Valve works normally and flows through the minimum current for the solenoid valve main coil VC1 that stops in emergency.

The above-described maximum allowed current for stopping in emergency solenoid valve main coil VC1 refers to：Ensure the electromagnetism that stops in emergency Valve works normally, and will not burn out the maximum operating currenbt for the solenoid valve main coil VC1 that stops in emergency.

When above-described switching tube 100 and switching tube 200 are N-type metal-oxide-semiconductor, the grid of N-type metal-oxide-semiconductor is switching tube 100 With the control terminal of switching tube 200, the drain electrode of N-type metal-oxide-semiconductor is the hot end of switching tube 100 and switching tube 200, N-type metal-oxide-semiconductor Source electrode is switching tube 100 and the cold end of switching tube 200；The switching tube 100 and switching tube 200 are NPN type triode When, the base stage of NPN type triode is the control terminal of switching tube 100 and switching tube 200, and the current collection of NPN type triode extremely switchs The hot end of pipe 100 and switching tube 200, the transmitting extremely low potential of switching tube 100 and switching tube 200 of NPN type triode End.

Above-described diode D1, diode D2, diode D3, diode D4, diode D5, diode D6, two poles Pipe D7 and diode D8 is switching diode；The N-type metal-oxide-semiconductor is the enhanced metal-oxide-semiconductor of N-channel；Three pole of NPN type It manages as NPN type switching transistor；The controllable silicon SCR is that the pressure drop of itself is the single-phase silicon-controlled of 1V or so after being connected.

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

A kind of diesel engine stops in emergency the implementation method of circuit, includes 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 electric appliance：

(1) the common end of first voltage type relay two-way contact KV12 and normally open end are connected, and parking power supply DC1 is to parking Loop power supply,

(2) first voltage type relay normally closed contact KV13 is disconnected, and third 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) the common end 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 third malfunction indicator lamp MIL3 is lighted, and user is prompted to stop Vehicle power supply DC1 fails；

3) when in stand-by power supply DC2 to during parking loop power supply, when power supply DC1 outputs of stopping revert to normal, the One voltage-type relay coil KV11 obtains electric, the contact action of first voltage type relay：

(1) the common end of first voltage type relay two-way contact KV12 and normally open end are connected, restore parking power supply DC1 to Stop loop power supply,

(2) first voltage type relay normally closed contact KV13 is disconnected, and the third malfunction indicator lamp MIL3 lighted extinguishes；

2nd, the process in control parking circuit

1) assert that second switch module K2 is intact, first switch module K1 quality is set as being unknown：

When diesel engine main control module sends out emergency shut-down control device signal to first switch module K1 and second switch module K2 Whether period, the switch connection of second switch module K2, the switch of first switch module K1 are connected to be unknown,

When diesel engine main control module does not send out emergency shut-down control device letter to first switch module K1 and second switch module K2 During number, the switch of second switch module K2 disconnects, and it is unknown whether the switch of first switch module K1 is broken as；

2) when the switch of second switch module K2 in an ON state, that is, stop in emergency during, then switching tube 100 ends, Switching tube 200 ends：

(1) switching tube 100 ends, and the contact of the 4th voltage-type relay is in static state, and the 4th voltage-type relay is not to tight The switch failure fault control circuit of emergency stop car owner circuit overcurrent and first switch module generates control signal, and the 4th failure refers to Show lamp MIL4 to extinguish,

(2) switching tube 200 ends, and the contact of the 5th voltage-type relay is in static state, and the 5th malfunction indicator lamp MIL5 is puts out It goes out,

(3) disconnected when second voltage type relay normally open contact KV22 is in：

1. if the solenoid valve spare coil VC2 that stops in emergency is in non-off state, for use is promptly stopped through resistance R3 The solenoid valve spare coil VC2 that stops in emergency in vehicle back-up circuit is powered in advance, and by making pre- energization to the setting of resistance R3 resistance values Electric current treats second between 1st/3rd to three/5ths of the extinction current for the solenoid valve spare coil VC2 that stops in emergency When voltage-type relay normally open contact KV22 is connected, the solenoid valve spare coil VC2 that stops in emergency rapidly enters normal through-flow magnetic, The valve of control is closed in solenoid valve quick acting of stopping in emergency, and is stopped in emergency,

2. if the solenoid valve spare coil VC2 that stops in emergency is in off state, stop in emergency solenoid valve spare coil VC2 No current passes through, and when second voltage type relay normally open contact KV22 is connected, stops in emergency solenoid valve spare coil VC2 still No current passes through, and the solenoid valve that stops in emergency cannot close the valve of control；

3) when the switch of second switch module K2 is off, i.e., during non-emergent parking：

(1) disconnected if the switch of first switch module K1 is in, switching tube 100 ends, and the 4th voltage-type relay touches Point is in static state, the not switch failure short circuit to stop in emergency major loop overcurrent and first switch module of the 4th voltage-type relay Control loop generates control signal, and the 4th malfunction indicator lamp MIL4 is extinguishing,

(2) connected if the switch of first switch module K1 is in, saturation, the 4th voltage-type relay is connected in switching tube 100 Contact be in dynamic：

1. the 4th voltage-type relay normally open contact KV42 is connected, to major loop overcurrent and the first switch module of stopping in emergency Switch failure fault control circuit generate control signal：

If a. controllable silicon SCR is in triggering and conducting, controllable silicon SCR is kept to be connected, i.e. tertiary voltage type relay coil KV31 holdings are powered through controllable silicon SCR,

If b. controllable silicon SCR is in cut-off, tertiary voltage type relay coil KV31 is led to by diode D7, D8 branch Electricity, and controllable silicon SCR is kept to end, until diode D7, D8 branch when the contact of the 4th voltage-type relay reverts to static state Stop being powered to tertiary voltage type relay coil KV31,

2. the 4th voltage-type relay normally open contact KV43 is connected, the 4th malfunction indicator lamp MIL4 is lighted, user is prompted to exist The switch failure short circuit of first switch module K1 during non-emergent parking,

If the solenoid valve spare coil VC2 that (3) stops in emergency is in non-off state, switching tube 200 is connected saturation, the 5th Voltage-type relay coil KV51 is powered, i.e., the contact of the 5th voltage-type relay is in dynamic, and the 5th voltage-type relay is normal Opening contact KV52 in an ON state, the 5th malfunction indicator lamp MIL5 is lighted,

(4), if the solenoid valve spare coil VC2 that stops in emergency is in off state, switching tube 200 ends, the 5th voltage-type Relay coil KV51 no powers, the i.e. contact of the 5th voltage-type relay are in static state, and the 5th voltage-type relay normally open touches Point KV52 is off, and the 5th malfunction indicator lamp MIL5 extinguishes, and the user solenoid valve spare coil VC2 that stops in emergency is prompted to break Road,

(5) whether no matter the first current relay normally-closed contact KI12 is connected, second voltage type relay coil KV21 is equal Must not be electric, the contact of second voltage type relay is in static state, and Fisrt fault indicator light MIL1 extinguishes；

4) when the switch of second switch module K2 in an ON state, that is, stop in emergency during, solenoid valve master of stopping in emergency Coil VC1 by electric current be more than its maximum allowed current when, the contact of the second current relay is in dynamic, i.e., the second electricity Flow pattern relay normally open contact KI22 is connected, then form trigger circuit by resistance R6 and R7 generates trigger signal to controllable silicon SCR：

If (1) controllable silicon SCR is in the conduction state, controllable silicon SCR is kept to be connected, tertiary voltage type relay coil KV31 holdings are powered through controllable silicon SCR,

If (2) controllable silicon SCR is in cut-off state, controllable silicon SCR conducting, tertiary voltage type relay coil are triggered KV31 is powered through controllable silicon SCR；

5) when the switch of second switch module K2 in an ON state, that is, stop in emergency during, solenoid valve master of stopping in emergency Coil VC1 by electric current be less than or equal to maximum allowed current when, the contact of the second current relay is in static state, i.e., second Current relay normally opened contact KI22 is disconnected, then form trigger circuit by resistance R6 and R7 does not generate triggering to controllable silicon SCR Signal；

6) when controllable silicon SCR is on or/and the 4th voltage-type relay normally open contact KV42 is in and connects, third electricity Die mould relay coil KV31 is powered, i.e., the contact of tertiary voltage type relay is in dynamic：

(1) the tertiary voltage type relay normally closed contact KV33 being serially connected in the major loop that stops in emergency is disconnected, to stopping in emergency Major loop carries out physical break protection,

(2) the common end of tertiary voltage type relay two-way contact KV32 is connected with normally open end, lights the second malfunction indicator lamp MIL2, the switch failure short circuit that user is prompted to stop in emergency major loop overcurrent or/and first switch module：

1. when the second malfunction indicator lamp MIL2 is lighted during diesel engine stops in emergency, illustrate major loop mistake of stopping in emergency Stream,

2. when the 4th malfunction indicator lamp MIL4 is always maintained at OFF state, then, the second malfunction indicator lamp MIL2 lighted is said Bright major loop overcurrent of stopping in emergency,

It is 3. former with the 4th at this time when the second malfunction indicator lamp MIL2 is lit during the non-emergent parking of diesel engine by extinguishing Barrier indicator light MIL4 functions are identical, that is, illustrate the switch failure short circuit of first switch module K1,

4. when the second malfunction indicator lamp MIL2 is remain on, and the 4th malfunction indicator lamp during the non-emergent parking of diesel engine MIL4 is lit by extinguishing, then in the second malfunction indicator lamp MIL2 lighted, illustrates stop in emergency major loop overcurrent and first The switch failure short circuit of switch module；

7) when the switch of second switch module K2 in an ON state, that is, stop in emergency during, solenoid valve to be stopped in emergency Main coil VC1 by electric current be less than its extinction current when, the contact of the first current relay is in static state, the first electricity Flow pattern relay normally closed contact KI12 connect, second voltage type relay coil KV21 obtain it is electric, second voltage type relay touch Point enter dynamic, using stop in emergency back-up circuit control stop in emergency, and if tertiary voltage type relay contact be in it is quiet State then lights Fisrt fault indicator light MIL1, and user is prompted not carry out the undercurrent of the major loop that stops in emergency of physical break protection, Otherwise, Fisrt fault indicator light MIL1 extinguishes；

8) when flow through the solenoid valve main coil VC1 that stops in emergency electric current be less than or equal to its maximum allowed current, be more than or equal to During its extinction current, the major loop that stops in emergency control diesel engine stops in emergency；

9) it after controllable silicon SCR triggers admittance, waits to remove parking power supply DC1 and stand-by power supply DC2, controllable silicon SCR is ended, I.e. the contact of tertiary voltage type relay is static state by Dynamic- Recovery.

The above-described extinction current for stopping in emergency solenoid valve spare coil VC2 refers to：Ensure the electricity that stops in emergency Magnet valve works normally and flows through the minimum current for the solenoid valve spare coil VC2 that stops in emergency.

When the switch of above-described second switch module K2 is off：If at the switch of first switch module K1 In connection, then the conducting of switching tube 100 saturation, the contact of the 4th voltage-type relay are in dynamic, tertiary voltage type relay line It encloses KV31 to be powered, the contact of tertiary voltage type relay is in dynamic, the tertiary voltage type being serially connected in the major loop that stops in emergency Relay normally closed contact KV33 is disconnected, and to stopping in emergency, major loop carries out physical break protection；If first switch module K1's opens It closes in disconnecting, then stop in emergency major loop no current；Therefore the switch in second switch module K2 is off, i.e., non- During stopping in emergency, situation about flowing through is not present in the major loop that stops in emergency.

Advantageous effect：

A kind of diesel engine of the present invention stops in emergency circuit and its implementation, main feature：

Diesel engine stop in emergency during and non-emergent parking during during the entire process of, once parking power-fail, Stand-by power supply work is switched to, and lights third malfunction indicator lamp MIL3, prompts user's parking power-fail；Power supply to be stopped is extensive It is multiple normal, automatically return to parking power supply power supply.

(2) during diesel engine stops in emergency, if lighting Fisrt fault indicator light MIL1, user is prompted not carry out physics and is cut Tertiary voltage type relay normally closed contact during the undercurrent of the major loop that stops in emergency of disconnected protection, i.e. prompting user stop in emergency KV33 is in connect in the case of stop in emergency the undercurrent of major loop.

(3) during stopping in emergency in diesel engine, if detecting major loop overcurrent of stopping in emergency, physical break stops in emergency master Circuit, to stopping in emergency, major loop carries out short-circuit protection, lights the second malfunction indicator lamp MIL2, and user is prompted to stop in emergency and is led back Stream is passed by, and is promptly stopped to the back-up circuit that stops in emergency by means of the major loop undercurrent switching control loop switch that stops in emergency Vehicle.

(4) stop in emergency during the non-emergent parking of diesel engine switch failure short circuit in major loop, light the 4th indicating fault Lamp MIL4 prompts user to stop in emergency switch failure short circuit in major loop, if the major loop that stops in emergency is not in physical break guarantor Shield state then carries out physical break to the major loop that stops in emergency and protects, and prevent mistakenly stop vehicle, protection at this time until into Row is removed when stopping in emergency.

(5) when progress diesel engine stops in emergency, it is switched to and stops in emergency in overcurrent protection before diesel engine stops in emergency Back-up circuit stops in emergency.

(6) during the non-emergent parking of diesel engine, extinguish if the 5th malfunction indicator lamp MIL5 is in, user is prompted promptly to stop Vehicle solenoid valve spare coil VC2 is in off state.

(7) during diesel engine stops in emergency, stop in emergency electromagnetism in back-up circuit enabling of stopping in emergency is preceding to its circuit Valve spare coil VC2 is powered in advance, wait the major loop that stops in emergency break down be switched to stop in emergency back-up circuit work when, So that the solenoid valve spare coil VC2 that stops in emergency rapidly enters normal through-flow magnetic, making to stop in emergency solenoid valve quick acting will The valve of control is closed, and is stopped in emergency.

Description of the drawings

A kind of diesel engine that Fig. 1 is the present invention stops in emergency schematic block circuit diagram；

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 are normal Open contact, KV31. tertiary voltage type relay coils, KV32. tertiary voltage type relay two-way contacts, KV33. tertiary voltages Type relay normally closed contact, the 4th voltage-type relay coils of KV41., the 4th voltage-type relay normally open of KV42, KV43. touch Point, the 5th voltage-type relay coils of KV51., the 5th voltage-type relay normally open contacts of KV52., the first current modes of KI11. after Electric apparatus coil, KI12. the first current relay normally-closed contacts, KI21. the second current relay coils, the second electricity of KI22. Flow pattern relay normally open contact, 100. switching tubes, 200. switching tubes, D1, D2, D3, D4, D5, D6, D7, D8. diode, R1, R2, R3, R4, R5, R6, R7. resistance, SCR. is silicon-controlled, DC1. parking power supplys, DC2. stand-by power supplies, DC3. alarm power supplys, VC1. Stop in emergency solenoid valve main coil, and VC2. stops in emergency solenoid valve spare coil, MIL1. Fisrt fault indicator lights, MIL2. second Malfunction indicator lamp, MIL3. third malfunction indicator lamp, the 4th malfunction indicator lamp of MIL4., the 5th malfunction indicator lamp of MIL5., K1. One switch module, K2. second switch modules.

Specific embodiment

The circuit as shown in Figure 1, a kind of 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 4th voltage-type relay, the 5th Voltage-type relay, the first current relay, the second current relay, the solenoid valve that stops in emergency, Fisrt fault indicator light MIL1, the second malfunction indicator lamp MIL2, third malfunction indicator lamp MIL3, the 4th malfunction indicator lamp MIL4, the 5th malfunction indicator lamp MIL5, first switch module K1, second switch module K2, switching tube 100, switching tube 200, diode D1, diode D2, two poles Pipe D3, diode D4, diode D5, diode D6, diode D7, diode D8, resistance R1, resistance R2, resistance R3, resistance R4, resistance R5, resistance R6, resistance R7, controllable silicon SCR；The solenoid valve that stops in emergency stops in emergency solenoid valve for twin coil, i.e., The coil of solenoid valve of stopping in emergency is made of spare two groups of coils of advocating peace；The first voltage type relay coil KV11 directly with Parking power supply DC1 simultaneously connects, and the anode of parking power supply DC1 is connected with the normally open end of first voltage type relay two-way contact KV12 It connects, the anode of stand-by power supply DC2 is connected with the normal-closed end of first voltage type relay two-way contact KV12, stand-by power supply DC2 Cathode with stop power supply DC1 cathode be connected；First current relay coil KI11 be sequentially connected in series the second current mode after Electric apparatus coil KI21, tertiary voltage type relay normally closed contact KV33, stop in emergency solenoid valve main coil VC1, first switch mould After the switch of block K1, the other end of the first current relay coil KI11 is with first voltage type relay two-way contact KV12's Common end is connected, and the other end of the switch of first switch module K1 is connected with the cathode for the power supply DC1 that stops, with the power supply that stops DC1 or stand-by power supply DC2 forms first parking circuit, and first parking circuit is the major loop that stops in emergency, i.e., promptly Electromagnetic valve for braking main coil circuit；The solenoid valve spare coil VC2 that stops in emergency is sequentially connected in series second voltage type relay normally open and touches Point KV22, second switch module K2 switch after, the other end of the solenoid valve spare coil VC2 that stops in emergency and first voltage type after The common end of electric appliance two-way contact KV12 is connected, the other end of the switch of second switch module K2 and bearing for parking power supply DC1 Pole is connected, and forms Article 2 parking circuit with parking power supply DC1 or stand-by power supply DC2, the Article 2 parking circuit is tight Emergency stop vehicle back-up circuit, that is, solenoid valve spare coil circuit of stopping in emergency；The one of second current relay normally opened contact KI22 End is connected with one end of resistance R6, the other end of resistance R6 and one end phase of tertiary voltage type relay coil KV31 and after connecing Access the common end of first voltage type relay two-way contact KV12, the other end of tertiary voltage type relay coil KV31 with can The anode of control silicon SCR is connected, the other end of the control pole of controllable silicon SCR and the second current relay normally opened contact KI22 and One end phase of resistance R7 simultaneously connects, the cathode of controllable silicon SCR and the other end phase of resistance R7 and after connecing access parking power supply DC1 it is negative Pole, one end of the 4th voltage-type relay normally open contact KV42 are connected with the anode of controllable silicon SCR, the 4th voltage-type relay The other end of normally opened contact KV42 is connected with the anode of diode D7, and the cathode of diode D7 is connected with the anode of diode D8 It connects, the cathode of diode D8 is connected with the cathode for the power supply DC1 that stops, and third is formed with parking power supply DC1 or stand-by power supply DC2 Item stops circuit, and Article 3 parking circuit is the switch failure short circuit of major loop overcurrent and first switch module of stopping in emergency Control loop；One end of first current relay normally-closed contact KI12 and the public affairs of first voltage type relay two-way contact KV12 End is connected altogether, and second voltage type relay normally open contact is accessed after other end concatenation second voltage type relay coil KV21 On the connecting line of KV22 and second switch module K2 switches, form Article 4 with parking power supply DC1 or stand-by power supply DC2 and stop back Road, the Article 4 parking circuit is major loop undercurrent switching control circuit of stopping in emergency；The 4th voltage-type relay line One end of circle KV41 is connected with the common end of first voltage type relay two-way contact KV12, the other end and switching tube 100 Hot end is connected, and the cold end of switching tube 100 accesses the solenoid valve main coil VC1 and first switch module K1 that stops in emergency On the connecting line of switch, one end of resistance R1 is connected with the common end of first voltage type relay two-way contact KV12, another End is connected with each other with the anode of diode D1 and the anode of diode D3, the cathode access second voltage type relay of diode D3 On the connecting line of normally opened contact KV22 and second switch module K2 switches, the cathode of diode D1 is connected with the anode of diode D2 It connects, the cathode of diode D2 and one end of the control terminal of switching tube 100 and resistance R2 are connected with each other, the other end access of resistance R2 The cathode of parking power supply DC1 forms Article 5 parking circuit, the Article 5 parking with parking power supply DC1 or stand-by power supply DC2 Circuit is the switch failure short-circuit detecting circuit of first switch module in major loop of stopping in emergency；One end access of resistance R3 is urgent On the connecting line of electromagnetic valve for braking spare coil VC2 and second voltage type relay normally open contact KV22, the other end of resistance R3 Connected with each other with the anode of diode D4 and the anode of diode D6, the cathode access second voltage type relay of diode D4 is normal On the connecting line for opening contact KV22 and second switch module K2 switches, the cathode of diode D6 is connected with the anode of diode D5 It connects, the cathode of diode D5 is connected with one end of resistance R4, the other end of resistance R4 and the control terminal and resistance of switching tube 200 One end of R5 is connected with each other, and the cathode of the other end access parking power supply DC1 of resistance R5, the cold end of switching tube 200 is with stopping The cathode of vehicle power supply DC1 is connected, and the hot end of switching tube 200, which concatenates, accesses the after the 5th voltage-type relay coil KV51 The common end of one voltage-type relay two-way contact KV12 forms Article 6 with parking power supply DC1 or stand-by power supply DC2 and stops back Road, the Article 6 parking circuit is powered in advance for the solenoid valve spare coil that stops in emergency in the back-up circuit that stops in emergency and open circuit inspection Survey time road；With alarm power supply DC3 and connecing after first voltage type relay normally closed contact KV13 concatenations third malfunction indicator lamp MIL3, Parking power-fail alarm circuit is formed with alarm power supply DC3；The common end of tertiary voltage type relay two-way contact KV32 with The anode of alarm power supply DC3 is connected, and the normally open end of tertiary voltage type relay two-way contact KV32 concatenates the second indicating fault Cathode after lamp MIL2 with the power supply DC3 that alarms is connected, and stops in emergency and major loop overcurrent and first opens with alarm power supply DC3 compositions Close Module Fail alarm circuit；The normal-closed end concatenation second voltage type relay of tertiary voltage type relay two-way contact KV32 is normal It is connected after opening contact KV23, Fisrt fault indicator light MIL1 with the cathode for the power supply DC3 that alarms, is formed with alarm power supply DC3 tight Emergency stop car owner circuit undercurrent alarm circuit；After 4th voltage-type relay normally open contact KV43 concatenates the 4th malfunction indicator lamp MIL4 It power supply DC3 and is connect with alarm, the switch failure short-circuit alarming circuit of first switch module is formed with alarm power supply DC3；5th electricity Die mould relay normally open contact KV52 power supply DC3 and connects after concatenating the 5th malfunction indicator lamp MIL5 with alarm, with the power supply DC3 that alarms Composition is stopped in emergency solenoid valve spare coil breaking alarming circuit；The control terminal and second switch mould of the first switch module K1 The control terminal of block K2 is connected with each other to be connected afterwards with the output of diesel engine main control module.

Controllable silicon SCR described above for stop in emergency major loop overcurrent when be powered self-locking.When the second current relay Normally opened contact KI22 is connected, and parking power supply DC1 or stand-by power supply DC2 is provided to controllable silicon SCR control pole by resistance R6, R7 and touched Send out Continuity signal, triggering controllable silicon SCR conducting；When the second current relay normally opened contact KI22 disconnect, parking power supply DC1 and Stand-by power supply DC2 cannot provide triggering and conducting signal by resistance R6, R7 to controllable silicon SCR control pole, you can control silicon SCR control Pole is without triggering Continuity signal；The present invention selects controllable silicon SCR to be single-phase silicon-controlled, and selected controllable silicon SCR after switch itself Pressure drop be about 1V or so, ensure that controllable silicon SCR be connected self-locking during, when the 4th voltage-type relay normally open contact KV42 is connected, and the forward direction being attempted by between controllable silicon SCR anode and cathode is not turned on along diode D7, D8 of string, even if third In voltage-type relay coil KV31 by electric current fall a part from positive diode D7, D8 shunting along string, and flow through can The electric current for controlling silicon SCR anodes is more than maintenance electric current, in order to which during more reliably ensuring controllable silicon SCR conducting self-locking, being attempted by can Forward direction between control silicon SCR anodes and cathode does not influence the conducting state that controllable silicon SCR is in along the diode of string, can will be positive It is attempted by between controllable silicon SCR anode and cathode after being changed to the suitable string of three diode forwards along two diodes gone here and there.Due to parking Power supply DC1 and stand-by power supply DC2 rated voltages are generally 24V, during controllable silicon SCR is ended, when the 4th voltage-type relay Normally opened contact KV42 is connected, and tertiary voltage type relay coil KV31 is powered, and the electric current flowed through is through the positive diode along string D7, D8 are to the cathode of parking power supply DC1 or stand-by power supply DC2, and the decompression be connected on diode D7, D8 does not interfere with third Voltage-type relay power works normally, because pressure drop is generally in the positive and negative of coil rated voltage on voltage-type relay coil It can be worked normally between 10%.

Above-described diode D7 and D8 is switching diode, and selects transwitch diode.

The above-described solenoid valve that stops in emergency stops in emergency solenoid valve for twin coil, that is, the coil for the solenoid valve that stops in emergency By advocating peace, spare two groups of coils form, as long as any group of coil is powered in two groups of coils or two groups of coils are powered simultaneously, promptly stop Vehicle solenoid valve obtain magnetic action close its control die or the valve of oil-break, realize diesel engine stop in emergency；Two groups of coils are During power failure state, the solenoid valve that stops in emergency is in loss of excitation state, solenoid valve control of stopping in emergency die or the valve of oil-break at In unlatching.The present invention sets in two groups of coils of the solenoid valve that stops in emergency one group as the solenoid valve main coil VC1 of stopping in emergency, another Group is then the solenoid valve spare coil VC2 that stops in emergency.

Above-described first switch module K1 and second switch module K2 are when for serviceable condition：Receiving diesel engine What main control module was sent out stop in emergency (machine) control signal, the switch of the switch connection accordingly controlled, i.e. first switch module K1 It connects, the switch connection of second switch module K2；(machine) control of stopping in emergency that diesel engine main control module sends out is not being received Signal, the switch accordingly controlled are off, i.e. the switch of first switch module K1 is off, second switch mould The switch of block K2 is off.

The above is receiving (machine) control signal that stops in emergency that diesel engine main control module sends out, that is to say, that this hair The bright diesel engine circuit that stops in emergency is receiving (machine) control signal that stops in emergency that diesel engine main control module sends out, at this time bavin Oil machine stop in emergency circuit be operated in control diesel engine stop in emergency.

The above is not receiving (machine) control signal that stops in emergency that diesel engine main control module sends out, that is to say, that this The diesel engine of the invention circuit that stops in emergency is not receiving (machine) control signal that stops in emergency that diesel engine main control module sends out, this When the diesel engine circuit that stops in emergency be operated in non-controlling diesel engine and stop in emergency.

But in real work：Due to stopping in emergency, solenoid valve spare coil VC2 frequency of use is not high, so second switch The switch of module K2 is less likely to be damaged；But the opposite solenoid valve spare coil VC2 that stop in emergency of the solenoid valve main coil VC1 that stops in emergency For：Frequency of use is high, be easy to if leading to its coil short after being used for multiple times as the solenoid valve main coil VC1 that stops in emergency by First switch module K1 switch burn short circuit, then non-controlling diesel engine stop in emergency during stop in emergency Electromagnetic Valve Circuit there is also During overcurrent or non-emergent parking, due to the short circuit of first switch module K1 switch failures, cause and accidentally stop in emergency.Therefore this hair Second switch module K2 described in bright middle identification is serviceable condition, and first switch module K1 is unknown state.

In working process of diesel engine, as long as since the major loop that stops in emergency is normal, back-up circuit is stopped in emergency just always In idle state, that is, the solenoid valve spare coil VC2 that stops in emergency just is constantly in idle state, and tight in this idle state The whether breaking users of anxious electromagnetic valve for braking spare coil VC2 can not know.When stopping in emergency, detection recognizes master of stopping in emergency Circuit overcurrent or undercurrent are switched to the back-up circuit that stops in emergency and stop in emergency, if stopping in emergency solenoid valve siding at this time It encloses VC2 and is in open circuit, then the diesel engine circuit that stops in emergency will be unable to make the solenoid valve that stops in emergency by the back-up circuit that stops in emergency Spare coil VC2 be powered magnetic stops in emergency.

Above-described diode D1, D2 and D3 are switching diode, and diode D1 and D2 select transwitch diode, Diode D3 selects transwitch diode or germanium switching diode.

Above-described switching tube 100 is N-type metal-oxide-semiconductor or NPN type triode, and the N-type metal-oxide-semiconductor used increases for N-channel Strong type metal-oxide-semiconductor, the NPN type triode used is NPN type switching transistor；When switching tube 100 is N-type metal-oxide-semiconductor, N-type metal-oxide-semiconductor Grid (G) be switching tube 100 control terminal, the drain electrode (D) of N-type metal-oxide-semiconductor is the hot end of switching tube 100, N-type metal-oxide-semiconductor Source electrode (S) be switching tube 100 cold end, and second switch module K2 switch be in disconnect, first switch module When the switch of K1 is in connection (short circuit), gate-source voltage is adjusted by resistance R1 and resistance R2, makes the conducting of switching tube 100 full With；When switching tube 100 is NPN type triode, the base stage of NPN type triode is the control terminal of switching tube 100, three pole of NPN type The hot end of the current collection of pipe extremely switching tube 100, the cold end of the transmitting extremely switching tube 100 of NPN type triode, and The switch of second switch module K2, which is in, to be disconnected, and when the switch of first switch module K1 is in connection (short circuit), passes through resistance R1 Base current is adjusted with resistance R2, makes switching tube 100 that saturation be connected.When the switch connection of second switch module K2, i.e. diode When D3 is connected, the cathode current potential of diode D3 anodes to parking power supply DC1 are clamped at the following level of 0.7V or so, so as to anode The diode D1 to connect with diode D3 anodes, the current potential of anode to parking power supply DC1 cathode are arrived equal to diode D3 anodes The current potential of the current potential that parking power supply DC1 cathode are clamped, i.e. diode D1 anodes to parking power supply DC1 cathode is clamped at 0.7V The following level in left and right, therefore positive diode D1 and diode D2 cut-off along string, no conductivity control signal are sent to switching tube 100 Whether the switch connection of control terminal, at this time first switch module K1, switching tube 100 is turned off.When opening for first switch module K1 Close in disconnect when, switching tube 100 use N-type metal-oxide-semiconductor, no matter second switch module K2 switch connection whether, N-type metal-oxide-semiconductor Equal no-voltage between grid source, the cut-off of N-type metal-oxide-semiconductor；When the switch of first switch module K1, which is in, to be disconnected, switching tube 100 uses NPN Type triode, no matter second switch module K2 switch connection whether, the equal no current of base stage of NPN type triode, three pole of NPN type Pipe ends.

For switching tube 100 for for NPN type triode：It is disconnected when the switch of second switch module K2 is in, i.e. two poles When pipe D3 is in cut-off, if the switch of first switch module K1, which is in, connects (short circuit), stop power supply DC1 or stand-by power supply DC2 is diverted to NPN type triode base current through resistance R1, diode D1, diode D2, and it is full to meet NPN type triode conducting With require, NPN type triode conducting saturation, otherwise, parking power supply DC1 or stand-by power supply DC2 through resistance R1, diode D1, two It is zero that pole pipe D2, which is diverted to NPN type triode base current, NPN type triode cut-off；When the switch of second switch module K2 connects Logical, i.e. when diode D3 is connected, the current potential of diode D3 anodes to parking power supply DC1 are clamped at the following level of 0.7V or so, So as to the diode D1 that anode connects with diode D3 anodes, the current potential of anode to parking power supply DC1 cathode is equal to diode The current potential of the current potential that D3 anodes are clamped to parking power supply DC1, i.e. diode D1 anodes to parking power supply DC1 cathode is clamped at The following level of 0.7V or so, therefore positive diode D1 and diode D2 along string is obstructed, no current send the base of NPN type triode Pole, at this time no matter first switch module K1 switch connection whether, NPN type triode is turned off.

For switching tube 100 for for N-type metal-oxide-semiconductor：It is disconnected when the switch of second switch module K2 is in, i.e. diode D3 During in cut-off, if the switch of first switch module K1, which is in, connects (short circuit), stop power supply DC1 or stand-by power supply DC2 warps Resistance R1, diode D1, diode D2, resistance R2 are divided to the gate-source voltage of N-type metal-oxide-semiconductor, and it is full to meet the conducting of N-type metal-oxide-semiconductor With require, N-type metal-oxide-semiconductor conducting saturation, otherwise, parking power supply DC1 or stand-by power supply DC2 through resistance R1, diode D1, diode The gate-source voltage that D2, resistance R2 are divided to N-type metal-oxide-semiconductor is zero, the cut-off of N-type metal-oxide-semiconductor；When the switch of second switch module K2 connects Logical, i.e. when diode D3 is connected, the current potential of diode D3 anodes to parking power supply DC1 are clamped at the following level of 0.7V or so, So as to the diode D1 that anode connects with diode D3 anodes, the current potential of anode to parking power supply DC1 cathode is equal to diode The current potential of the current potential that D3 anodes are clamped to parking power supply DC1, i.e. diode D1 anodes to parking power supply DC1 cathode is clamped at The following level of 0.7V or so, therefore positive diode D1 and diode D2 along string is obstructed, no-voltage adds to the grid of N-type metal-oxide-semiconductor, At this time no matter first switch module K1 switch connection whether, N-type metal-oxide-semiconductor is turned off.

When switching tube 100 be in cut-off, then the 4th voltage-type relay coil KV41 no currents pass through, the 4th voltage-type after Electric appliance does not work, and the contact of the 4th voltage-type relay is in static state.

When switching tube 100 is on saturation, then the 4th voltage-type relay coil KV41 has electric current to pass through, the 4th voltage Type relay works, and the contact of the 4th voltage-type relay is in dynamic.

When assert that second switch module K2 is serviceable condition, in second switch module K2 in during switch disconnection：It opens It closes pipe 100 to end, i.e., the contact of the 4th voltage-type relay is in static state, then illustrates that the switch of first switch module K1 is equally located It is intact in being broken as；Saturation is connected in switching tube 100, i.e. the contact of the 4th voltage-type relay is in dynamic, then assert that first opens The switch for closing module K1 is in connection (short circuit) as damage.

When assert second switch module K2 be serviceable condition, during the switch connection of second switch module K2：No matter Whether the switch of one switch module K1 is connected, and switching tube 100 is turned off, and the contact of the 4th voltage-type relay is in static state, I.e. during the switch connection of second switch module K2, then switch failure short-circuit detecting circuit does not open first switch module K1 Whether pass damages detection identification.

Above-described diode D4, D5 and D6 are switching diode, and diode D5 and D6 select two pole of transwitch Pipe, diode D4 select transwitch diode or germanium switching diode.

Above-described switching tube 200 is N-type metal-oxide-semiconductor or NPN type triode, and the N-type metal-oxide-semiconductor used increases for N-channel Strong type metal-oxide-semiconductor, the NPN type triode used is NPN type switching transistor；When switching tube 200 is N-type metal-oxide-semiconductor, N-type metal-oxide-semiconductor Grid (G) be switching tube 200 control terminal, the drain electrode (D) of N-type metal-oxide-semiconductor is the hot end of switching tube 200, N-type metal-oxide-semiconductor Source electrode (S) be switching tube 200 cold end；When switching tube 200 is NPN type triode, the base stage of NPN type triode is The control terminal of switching tube 200, the hot end of the current collection extremely switching tube 200 of NPN type triode, the transmitting of NPN type triode The extremely cold end of switching tube 200.It is connected when the switch of second switch module K2 is in：(1) if second voltage type relay is normal It opens contact KV22 and is in disconnection, when the solenoid valve spare coil VC2 that stops in emergency is in non-off state, diode D4 conductings, two The cathode current potential of pole pipe D4 anodes to parking power supply DC1 are clamped at the following level of 0.7V or so, so as to anode and diode D4 The diode D6 that anode connects, the current potential of anode to parking power supply DC1 cathode are equal to diode D4 anodes to parking power supply DC1 The current potential of the current potential that cathode is clamped, i.e. diode D6 anodes to parking power supply DC1 cathode is clamped at the following electricity of 0.7V or so It is flat, therefore positive diode D6 and diode D5 cut-off along string, no conductivity control signal send to the control terminal of switching tube 200, open Pipe 200 is closed to end；(2) if second voltage type relay normally open contact KV22 is in connection, no matter the solenoid valve that stops in emergency is spare Which kind of state coil VC2 is in, and the current potential of diode D6 anodes to parking power supply DC1 cathode is by the switch of second switch module K2 Clamper is in 0V or so, therefore positive diode D6 and diode D5 cut-off along string, no conductivity control signal are sent to switching tube 200 Control terminal, switching tube 200 end；(3) disconnected if second voltage type relay normally open contact KV22 is in, stop in emergency solenoid valve When spare coil VC2 is in off state, parking power supply DC1 and stand-by power supply DC2 can not be spare by the solenoid valve that stops in emergency Coil VC2 is sent to the anode of diode D4 and diode D6, diode D6 anodes to the electricity of parking power supply DC1 cathode through resistance R3 Position is 0V, therefore is sent without conductivity control signal to the control terminal of switching tube 200, and switching tube 200 ends；To sum up state (1), (2) and (3) point It understands：When the switch of second switch module K2, which is in, to be connected, no conductivity control signal is sent to the control terminal of switching tube 200, is opened Pipe 200 is closed to end.It is disconnected when the switch of second switch module K2 is in：(1) if at second voltage type relay normally open contact KV22 In disconnection, when the solenoid valve spare coil VC2 that stops in emergency is in non-off state, diode D4 cut-offs, stop power supply DC1 or standby It will be opened through resistance R3, diode D6, diode D5 and resistance R4 by the solenoid valve spare coil VC2 that stops in emergency with power supply DC2 The conductivity control signal for closing pipe 200 is sent to the control terminal of switching tube 200, and saturation is connected in switching tube 200；If second voltage type after Electric appliance normally opened contact KV22, which is in, to be disconnected, and when the solenoid valve spare coil VC2 that stops in emergency is in off state, stop power supply DC1 The anode of diode D6, two poles can not be sent to by stopping in emergency solenoid valve spare coil VC2 through resistance R3 with stand-by power supply DC2 The current potential of pipe D6 anodes to parking power supply DC1 cathode is 0V, therefore is sent without conductivity control signal to the control terminal of switching tube 200, is opened Pipe 200 is closed to end；(3) connected if second voltage type relay normally open contact KV22 is in, stop in emergency solenoid valve spare coil When VC2 is in non-off state, diode D4 ends, and parking power supply DC1 or stand-by power supply DC2 is standby by the solenoid valve that stops in emergency The conductivity control signal of switching tube 200 is sent to switch through resistance R3, diode D6, diode D5 and resistance R4 with coil VC2 Saturation is connected in the control terminal of pipe 200, switching tube 200；(4) connected if second voltage type relay normally open contact KV22 is in, promptly When electromagnetic valve for braking spare coil VC2 is in off state, parking power supply DC1 and stand-by power supply DC2 can not be by stopping in emergency Solenoid valve spare coil VC2 is sent to the anode of diode D6, diode D6 anodes to the electricity of parking power supply DC1 cathode through resistance R3 Position is 0V, therefore is sent without conductivity control signal to the control terminal of switching tube 200, and switching tube 200 ends；It to sum up states (1), (2), (3) and (4) Point is understood：1. it is disconnected, and the solenoid valve spare coil VC2 that stops in emergency is in non-open circuit when the switch of second switch module K2 is in During state, conductivity control signal is sent to the control terminal of switching tube 200, and saturation is connected in switching tube 200；2. as second switch module K2 Switch be in and disconnect, and when the solenoid valve spare coil VC2 that stops in emergency is in off state, no conductivity control signal is sent to opening The control terminal of pipe 200 is closed, switching tube 200 ends；In fact in the present invention：Shape is disconnected when the switch of second switch module K2 is in During state, second voltage type relay normally open contact KV22 is in situation about connecting and is not present.

It is connected when the switch of second switch module K2 is in, and second voltage type relay normally open contact KV22 is in disconnected It opens, when the solenoid valve spare coil VC2 that stops in emergency is in non-off state (regarding as intact), diode D4 conductings, switching tube 200 cut-offs, parking power supply DC1 or stand-by power supply DC2 is by the solenoid valve spare coil VC2 that stops in emergency through resistance R3, diode The switch composition power circuit of D4, second switch module K2, and the resistance value of appropriate resistance R3 is selected to make loop current urgent Electromagnetic valve for braking requirement the solenoid valve spare coil VC2 that stops in emergency extinction current 1/3rd to three/5ths it Between, and including 3/5ths and 1/3rd, stop in emergency during stopping in emergency to for use so as to be realized by resistance R3 The solenoid valve spare coil VC2 that stops in emergency in back-up circuit is powered in advance, and the back-up circuit that stops in emergency to be cut of changing to promptly is stopped Che Shi that is, when second voltage type relay normally open contact KV22 is connected, realizes the electricity that stops in emergency in the back-up circuit that stops in emergency Magnet valve spare coil VC2 is quick that magnetic closes the valve of control, stops in emergency.

It is disconnected, and the solenoid valve spare coil VC2 that stops in emergency is in non-open circuit when the switch of second switch module K2 is in During state (regarding as intact), diode D4 branches are obstructed, by selecting the resistance value of resistance R4 and R5, make parking power supply DC1 or Stand-by power supply DC2 is sent by the solenoid valve spare coil VC2 that stops in emergency through resistance R3, diode D6, diode D5 and resistance R4 Conductivity control signal to 200 control terminal of switching tube meets the conducting saturation requirement of switching tube 200.Preferably switching tube 200 of the invention For N-type metal-oxide-semiconductor.

When switching tube 200 ends, the 5th voltage-type relay coil KV51 no powers, i.e. the 5th voltage-type relay Contact is in static state, and the 5th voltage-type relay normally open contact KV52 is off, and the 5th malfunction indicator lamp MIL5 is in Extinguish.

When saturation is connected in switching tube 200, the 5th voltage-type relay coil KV51 is powered, i.e. the 5th voltage-type relay Contact be in dynamic, the 5th voltage-type relay normally open contact KV52 in an ON state, at the 5th malfunction indicator lamp MIL5 In lighting.

Above-described major loop undercurrent switching control circuit of stopping in emergency, is used for：It is received during stopping in emergency tight During the deficient flow control signals that anxious electromagnetic valve for braking main coil circuit is sent out, control is switched to the back-up circuit that stops in emergency and carries out promptly Parking；Stop in emergency solenoid valve undercurrent switching control circuit and lending give when stop in emergency major loop overcurrent when, control is switched to The back-up circuit that stops in emergency stops in emergency.

The switch failure fault control circuit of above-described stop in emergency major loop overcurrent and first switch module：For Stop in emergency during stopping in emergency the switch failure short circuit of first switch module during major loop overcurrent and non-emergent parking when, it is right The major loop that stops in emergency carries out physical break protection, and passes through major loop overcurrent and the alarm of first switch Module Fail of stopping in emergency Circuit carries out the second malfunction indicator lamp MIL2 alarms, and the physical break for major loop overcurrent of stopping in emergency is remained to Wait remove parking power supply DC1 and stand-by power supply DC2 when terminate (releasing), otherwise, the physics for major loop overcurrent of stopping in emergency is cut It is disconnected protection be always held at diesel engine it is later stop in emergency during and non-emergent parking during, that is, be always held at diesel engine with In entire implementation procedure afterwards；And it stops in emergency to the physical break protection of the switch failure short circuit of first switch module is pending When terminate (releasing).When receiving the mistake flow control signals that the major loop that stops in emergency is sent out during stopping in emergency, to promptly stopping Car owner circuit carries out physical break protection, and is always held in the later entire implementation procedure of diesel engine, waits to remove parking electricity (releasing) is terminated during source DC1 and stand-by power supply DC2；When the switch failure that first switch module is received between non-emergent dwelling period is short When road controls signal, physical break/holding tripping protection is carried out to the major loop that stops in emergency, and until whole when being stopped in emergency Only (release).Detected during non-emergent parking first switch module switch failure short circuit, to stop in emergency major loop into Row physical break is protected, and mistake emergency stop is caused by the switch failure short circuit of first switch module during also solving non-emergent parking Problem.To, when the short circuit of the switch failure of first switch module, carrying out physics during non-emergent parking to the major loop that stops in emergency and cutting It is disconnected/to keep the protection of cut-out until terminating (releasings) when being stopped in emergency, be conducive to mainly utilize stop in emergency major loop into Row stops in emergency.When the major loop that stops in emergency is in the switch failure short circuit of stop in emergency major loop overcurrent and first switch module The physical break guard mode that control loop carries out it because of overcurrent, then when stopping in emergency to diesel engine, directly by promptly stopping Car owner circuit undercurrent switching control circuit, control are switched to the back-up circuit that stops in emergency and stop in emergency.

Fisrt fault indicator light MIL1 described above does not carry out physics for the major loop that stops in emergency during stopping in emergency and cuts Undercurrent prompting in the case of disconnected protection, i.e., the undercurrent under the non-disconnections of tertiary voltage type relay normally closed contact KV33 carries Show, when Fisrt fault indicator light MIL1 is lighted, the major loop that illustrates to stop in emergency is likely to contact poor electrical resistance and becomes larger or emergency stop Vehicle solenoid valve main coil VC1 open circuits or the circuit are breaking elsewhere, if the switch failure of first switch module is opened a way, certainly Including institute's power supply source it is possible that damage causes for stream deficiency.

When above-described second malfunction indicator lamp MIL2 is in action state for the contact of tertiary voltage type relay, The second malfunction indicator lamp MIL2 is lighted, the second malfunction indicator lamp MIL2 lighted illustrates stop in emergency major loop overcurrent or/and The switch failure short circuit of one switch module：

1. when the second malfunction indicator lamp MIL2 is lighted during diesel engine stops in emergency, illustrate major loop mistake of stopping in emergency Stream；

2. when the 4th malfunction indicator lamp MIL4 is always maintained at OFF state, then, the second malfunction indicator lamp MIL2 lighted is said Bright major loop overcurrent of stopping in emergency；

It is 3. former with the 4th at this time when the second malfunction indicator lamp MIL2 is lit during the non-emergent parking of diesel engine by extinguishing Barrier indicator light MIL4 functions are identical, that is, illustrate the switch failure short circuit of first switch module K1；

4. when the second malfunction indicator lamp MIL2 is remain on, and the 4th malfunction indicator lamp during the non-emergent parking of diesel engine MIL4 is lit by extinguishing, then in the second malfunction indicator lamp MIL2 lighted, illustrates stop in emergency major loop overcurrent and first The switch failure short circuit of switch module.

Above-described 4th malfunction indicator lamp MIL4 stops for the switch of first switch module K1 diesel engine is non-emergent Short circuit of failing during vehicle is prompted, if diesel engine, during non-emergent parking, the switch failure of first switch module K1 is short-circuit, then point Otherwise bright 4th malfunction indicator lamp MIL4 keeps extinguishing.The present invention due to assert second switch module K2 be serviceable condition, therefore During diesel engine stops in emergency, the 4th malfunction indicator lamp MIL4 is in OFF state.

Above-described third malfunction indicator lamp MIL3 is prompted when failing for the power supply DC1 that stops, when parking power supply third When malfunction indicator lamp MIL3 is lighted, the power supply DC1 output voltages that illustrate to stop are less than first voltage type relay coil KV11 maintenances Voltage or equal to zero, here when parking power supply DC1 output voltages less than first voltage type relay coil KV11 maintenance voltages or Parking power supply DC1 failures (or halting vehicle power supply DC1 dead electricity or decompression) are regarded as during equal to zero.

Above-described 5th malfunction indicator lamp MIL5, for diesel engine during non-emergent parking, i.e. second switch mould When the switch of block K2 is off, if the solenoid valve spare coil VC2 that stops in emergency is in non-off state, the 5th event is lighted Hinder indicator light MIL5, prompt user stop in emergency solenoid valve spare coil VC2 contact it is intact, otherwise, extinguish the 5th indicating fault Lamp MIL5, prompt user stop in emergency solenoid valve spare coil VC2 open circuit.

The rated voltage of first voltage type relay coil KV11 described above is more than the rated voltage of parking power supply DC1, Be conducive 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's Rated voltage is equal to the 106% of the rated voltage of parking power supply DC1.

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 the volume for stopping power supply DC1 Constant current.

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

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

The rated current of the first current relay coil KI11 of the above is set equal to anxious electromagnetic valve for braking main coil The extinction current of VC1；The rated current of the second current relay coil KI21 is set equal to anxious electromagnetic valve for braking The maximum allowed current of main coil VC1.

The above-described extinction current for stopping in emergency solenoid valve main coil VC1 is to refer to ensure the electricity that stops in emergency Magnet valve works normally the minimum current for flowing through the solenoid valve main coil VC1 that stops in emergency.

The above-described maximum allowed current for stopping in emergency solenoid valve main coil VC1 is to refer to ensure the electricity that stops in emergency Magnet valve works normally, and will not burn out the maximum operating currenbt for the solenoid valve main coil VC1 that stops in emergency.

When the electric current that the solenoid valve main coil VC1 that stops in emergency flows through is permitted in its extinction current to maximum when stopping in emergency When perhaps between electric current, the present invention assert that the solenoid valve main coil VC1 that stops in emergency is in normal operating conditions, otherwise, assert urgent The major loop that stops breaks down.

The above-described extinction current for stopping in emergency solenoid valve spare coil VC2 is to refer to ensure to stop in emergency Solenoid valve works normally the minimum current for flowing through the solenoid valve spare coil VC2 that stops in emergency.

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

Above-described diesel engine stop in emergency circuit parking power supply DC1 and stand-by power supply DC2 handoff procedures it is as follows：

(1) the common end of first voltage type relay two-way contact KV12 and normally open end are connected, and parking power supply DC1 is to parking Loop power supply；

(1) the common end 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；

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：

(1) the common end of first voltage type relay two-way contact KV12 and normally open end are connected, restore parking power supply DC1 to Stop loop power supply；

(2) first voltage type relay normally closed contact KV13 is disconnected, and the third malfunction indicator lamp MIL3 lighted extinguishes.

In the present invention：Since the resistance value of biasing resistor R4 and R5 are very big, therefore while stopping in emergency, is once switched to and stops in emergency Back-up circuit carries out carry out emergency stop, after the switch of second switch module K2 disconnects, second voltage type relay coil KV21 warps The passage current very little that its second voltage type relay normally open contact KV22 being closed is formed, therefore flow through second voltage type relay The electric current of coil KV21 is far smaller than second voltage type relay and keeps the requirement being attracted, that is, treats the switch of second switch module K2 After disconnection, the contact of second voltage type relay reverts to static state.

Claims

The circuit 1. a kind of diesel engine stops in emergency, including parking power supply (DC1), stand-by power supply (DC2), alarm power supply (DC3), the One voltage-type relay, second voltage type relay, tertiary voltage type relay, the 4th voltage-type relay, the 5th voltage-type Relay, the first current relay, the second current relay, the solenoid valve that stops in emergency, Fisrt fault indicator light (MIL1), Second malfunction indicator lamp (MIL2), third malfunction indicator lamp (MIL3), the 4th malfunction indicator lamp (MIL4), the 5th malfunction indicator lamp (MIL5), first switch module (K1), second switch module (K2), switching tube (100), switching tube (200), diode D1, two Pole pipe D2, diode D3, diode D4, diode D5, diode D6, diode D7, diode D8, resistance R1, resistance R2, electricity Hinder R3, resistance R4, resistance R5, resistance R6, resistance R7, silicon-controlled (SCR)；It is characterized in that, the solenoid valve that stops in emergency is Twin coil stops in emergency solenoid valve, that is, the coil for the solenoid valve that stops in emergency is made of spare two groups of coils of advocating peace；First electricity Die mould relay coil (KV11) directly (DC1) and connects with parking power supply, the anode of parking power supply (DC1) and first voltage type after The normally open end of electric appliance two-way contact (KV12) is connected, and the anode and first voltage type relay of stand-by power supply (DC2) are two-way tactile The normal-closed end of point (KV12) is connected, and the cathode of stand-by power supply (DC2) is connected with the cathode of parking power supply (DC1)；First electricity It is normally closed tactile that flow pattern relay coil (KI11) is sequentially connected in series the second current relay coil (KI21), tertiary voltage type relay Point (KV33), the solenoid valve main coil (VC1) that stops in emergency, first switch module (K1) switch after, the first current relay The other end of coil (KI11) is connected with the common end of first voltage type relay two-way contact (KV12), first switch module (K1) other end of switch is connected with the cathode of parking power supply (DC1), with parking power supply (DC1) or stand-by power supply (DC2) First parking circuit is formed, first parking circuit is the major loop that stops in emergency, that is, stop in emergency solenoid valve main coil Circuit；The solenoid valve spare coil (VC2) that stops in emergency is sequentially connected in series second voltage type relay normally open contact (KV22), second opens After the switch for closing module (K2), the other end and first voltage type relay for the solenoid valve spare coil (VC2) that stops in emergency are two-way The common end of contact (KV12) is connected, the cathode of the other end and parking power supply (DC1) of the switch of second switch module (K2) It is connected, forms Article 2 parking circuit with parking power supply (DC1) or stand-by power supply (DC2), the Article 2 parking circuit is Stop in emergency back-up circuit, that is, solenoid valve spare coil circuit of stopping in emergency；Second current relay normally opened contact (KI22) One end be connected with one end of resistance R6, one end phase of the other end and tertiary voltage type relay coil (KV31) of resistance R6 And the common end of first voltage type relay two-way contact (KV12) is accessed after connecing, tertiary voltage type relay coil (KV31) The other end is connected with the anode of silicon-controlled (SCR), the control pole of silicon-controlled (SCR) and the second current relay normally opened contact (KI22) the other end and one end phase of resistance R7 simultaneously connect, the cathode of silicon-controlled (SCR) and the other end phase of resistance R7 and after connecing The cathode of access parking power supply (DC1), one end of the 4th voltage-type relay normally open contact (KV42) and the sun of silicon-controlled (SCR) Pole is connected, and the other end of the 4th voltage-type relay normally open contact (KV42) is connected with the anode of diode D7, diode The cathode of D7 is connected with the anode of diode D8, and the cathode of diode D8 is connected with the cathode of parking power supply (DC1), with stopping Vehicle power supply (DC1) or stand-by power supply (DC2) form Article 3 parking circuit, and the Article 3 parking circuit is led back to stop in emergency Pass by the switch failure fault control circuit of stream and first switch module；The one of first current relay normally-closed contact (KI12) End is connected with the common end of first voltage type relay two-way contact (KV12), other end concatenation second voltage type relay line (KV21) is enclosed to access on the connecting line that second voltage type relay normally open contact (KV22) is switched with second switch module (K2) afterwards, Article 4 parking circuit is formed with parking power supply (DC1) or stand-by power supply (DC2), the Article 4 parking circuit is stops in emergency Major loop undercurrent switching control circuit；One end of the 4th voltage-type relay coil (KV41) and first voltage type relay The common end of two-way contact (KV12) is connected, and the other end is connected with the hot end of switching tube (100), switching tube (100) Cold end access stop in emergency solenoid valve main coil (VC1) and first switch module (K1) switch connecting line on, resistance One end of R1 is connected with the common end of first voltage type relay two-way contact (KV12), the anode of the other end and diode D1 And the anode of diode D3 is connected with each other, the cathode of diode D3 access second voltage type relay normally open contact (KV22) and the On the connecting line of two switch modules (K2) switch, the cathode of diode D1 is connected with the anode of diode D2, diode D2's Cathode and the control terminal of switching tube (100) and one end of resistance R2 are connected with each other, the other end access parking power supply of resistance R2 (DC1) cathode forms Article 5 parking circuit with parking power supply (DC1) or stand-by power supply (DC2), and the Article 5 is stopped back Road is the switch failure short-circuit detecting circuit of first switch module in major loop of stopping in emergency；One end access of resistance R3 promptly stops On the connecting line of vehicle solenoid valve spare coil (VC2) and second voltage type relay normally open contact (KV22), resistance R3's is another End is connected with each other with the anode of diode D4 and the anode of diode D6, the cathode access second voltage type relay of diode D4 On the connecting line that normally opened contact (KV22) is switched with second switch module (K2), the cathode of diode D6 and the anode of diode D5 It is connected, the cathode of diode D5 is connected with one end of resistance R4, the other end of resistance R4 and the control terminal of switching tube (200) And one end of resistance R5 is connected with each other, the cathode of the other end of resistance R5 access parking power supply (DC1), switching tube (200) it is low Potential end is connected with the cathode of parking power supply (DC1), and the hot end of switching tube (200) concatenates the 5th voltage-type relay line The common end that (KV51) accesses first voltage type relay two-way contact (KV12) afterwards is enclosed, with parking power supply (DC1) or standby electricity Source (DC2) forms Article 6 parking circuit, and the Article 6 parking circuit is the electromagnetism that stops in emergency in the back-up circuit that stops in emergency Valve spare coil is powered in advance and breaking measure loop；First voltage type relay normally closed contact (KV13) concatenates third indicating fault Lamp (MIL3) (DC3) and connects afterwards with alarm power supply, and parking power-fail alarm circuit is formed with alarm power supply (DC3)；Third electricity The common end of die mould relay two-way contact (KV32) is connected with the anode of alarm power supply (DC3), tertiary voltage type relay The normally open end of two-way contact (KV32) concatenates cathode of the second malfunction indicator lamp (MIL2) afterwards with alarm power supply (DC3) and is connected, Stop in emergency major loop overcurrent and first switch Module Fail alarm circuit are formed with alarm power supply (DC3)；Tertiary voltage type after Normal-closed end concatenation second voltage type relay normally open contact (KV23), the Fisrt fault indicator light of electric appliance two-way contact (KV32) (MIL1) cathode afterwards with alarm power supply (DC3) is connected, and major loop undercurrent alarm of stopping in emergency is formed with alarm power supply (DC3) Circuit；4th voltage-type relay normally open contact (KV43) concatenate the 4th malfunction indicator lamp (MIL4) afterwards with alarm power supply (DC3) And connect, the switch failure short-circuit alarming circuit of first switch module is formed with alarm power supply (DC3)；5th voltage-type relay is normal It opens contact (KV52) and concatenates the 5th malfunction indicator lamp (MIL5) and (DC3) and connect with alarm power supply afterwards, formed with alarm power supply (DC3) It stops in emergency solenoid valve spare coil breaking alarming circuit；The control terminal and second switch module of the first switch module (K1) (K2) it is connected after control terminal is connected with each other with the output of diesel engine main control module；The switching tube (100) is N-type metal-oxide-semiconductor, Or the switching tube (100) is NPN type triode；The switching tube (200) is N-type metal-oxide-semiconductor or the switching tube (200) is NPN type triode.
The circuit 2. a kind of diesel engine according to claim 1 stops in emergency, which is characterized in that the electromagnetism that stops in emergency Valve stops in emergency solenoid valve for twin coil, that is, the coil for the solenoid valve that stops in emergency is made of spare two groups of coils of advocating peace, two groups of lines Any of which group coil is powered in circle or two groups of coils are powered simultaneously, and the solenoid valve that stops in emergency obtains magnetic action and closes the disconnected of its control The valve of gas or oil-break realizes that diesel engine stops in emergency；When two groups of coils are power failure state, the solenoid valve that stops in emergency, which is in, to be lost Magnetic state, solenoid valve control of stopping in emergency die or the valve of oil-break be in open；Stop in emergency two groups of coils of solenoid valve In one group be set as the solenoid valve main coil (VC1) that stops in emergency, another group is set as the solenoid valve spare coil that stops in emergency (VC2)。
The circuit 3. a kind of diesel engine according to claim 1 stops in emergency, which is characterized in that the first current mode relay The rated current of device coil (KI11) is set equal to stop in emergency the extinction current of solenoid valve main coil (VC1)；Described The rated current of two current relay coils (KI21) is set equal to the maximum allowable of solenoid valve main coil (VC1) of stopping in emergency Electric current.
The circuit 4. a kind of diesel engine according to claim 1 stops in emergency, which is characterized in that the first voltage type after Electric appliance two-way contact (KV12), second voltage type relay normally open contact (KV22) and tertiary voltage type relay are normally closed tactile The maximum current that point (KV33) allows to flow through is equal to or the rated current more than parking power supply (DC1).
The circuit 5. a kind of diesel engine according to claim 3 stops in emergency, which is characterized in that the electromagnetism that stops in emergency The extinction current of valve main coil (VC1) refers to：Ensure to stop in emergency solenoid valve normal work and flow through the electromagnetism that stops in emergency The minimum current of valve main coil (VC1).
The circuit 6. a kind of diesel engine according to claim 3 stops in emergency, which is characterized in that the electromagnetism that stops in emergency The maximum allowed current of valve main coil (VC1) refers to：Ensure solenoid valve normal work of stopping in emergency, and will not burn out and stop in emergency The maximum operating currenbt of solenoid valve main coil (VC1).
The circuit 7. a kind of diesel engine according to claim 1 stops in emergency, which is characterized in that the switching tube (100) When with switching tube (200) being N-type metal-oxide-semiconductor, the control terminal of the grid of N-type metal-oxide-semiconductor for switching tube (100) and switching tube (200), N The drain electrode of type metal-oxide-semiconductor is switching tube (100) and the hot end of switching tube (200), and the source electrode of N-type metal-oxide-semiconductor is switching tube (100) With the cold end of switching tube (200)；When the switching tube (100) and switching tube (200) they are NPN type triode, NPN type three Control terminal of the base stage of pole pipe for switching tube (100) and switching tube (200), the current collection extremely switching tube (100) of NPN type triode With the hot end of switching tube (200), the transmitting extremely switching tube (100) of NPN type triode and the low potential of switching tube (200) End.
The circuit 8. a kind of diesel engine according to claim 1 stops in emergency, which is characterized in that the diode D1, two Pole pipe D2, diode D3, diode D4, diode D5, diode D6, diode D7 and diode D8 are switching diode； The N-type metal-oxide-semiconductor is the enhanced metal-oxide-semiconductor of N-channel；The NPN type triode is NPN type switching transistor；Described can Control silicon (SCR) is that the pressure drop of itself is the single-phase silicon-controlled of 1V or so after being connected.
The implementation method of circuit 9. a kind of diesel engine according to claims 1 to 3 any bar stops in emergency, feature exist In including the following steps:

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

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

(1) the common end of first voltage type relay two-way contact (KV12) and normally open end are connected, and parking power supply (DC1) is to parking Loop power supply,

(2) first voltage type relay normally closed contact (KV13) disconnects, and third 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 end 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 third malfunction indicator lamp (MIL3) is lighted, and user is prompted to stop Vehicle power supply (DC1) fails；

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

(1) the common end of first voltage type relay two-way contact (KV12) and normally open end are connected, restore parking power supply (DC1) to Stop loop power supply,

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

2nd, the process in control parking circuit

1) assert that second switch module (K2) is intact, first switch module (K1) quality is set as being unknown：

When diesel engine main control module sends out emergency shut-down control device signal to first switch module (K1) and second switch module (K2) Whether period, the switch connection of second switch module (K2), the switch of first switch module (K1) are connected to be unknown,

When diesel engine main control module does not send out emergency shut-down control device letter to first switch module (K1) and second switch module (K2) During number, the switch of second switch module (K2) disconnects, and it is unknown whether the switch of first switch module (K1) is broken as；

2) when the switch of second switch module (K2) in an ON state, that is, stop in emergency during, then switching tube (100) end, Switching tube (200) ends：

(1) switching tube (100) ends, and the contact of the 4th voltage-type relay is in static state, and the 4th voltage-type relay is not to urgent The switch failure fault control circuit of major loop overcurrent of stopping and first switch module generates control signal, and the 4th indicating fault Lamp (MIL4) is extinguishing,

(2) switching tube (200) ends, and the contact of the 5th voltage-type relay is in static state, and the 5th malfunction indicator lamp (MIL5) is puts out It goes out,

(3) when second voltage type relay normally open contact (KV22) is in disconnection：

1. if the solenoid valve spare coil (VC2) that stops in emergency stops in emergency to for use through resistance R3 in non-off state The solenoid valve spare coil (VC2) that stops in emergency in back-up circuit is powered in advance, and by making pre- energization to the setting of resistance R3 resistance values Electric current treats between 1st/3rd to three/5ths of the extinction current for the solenoid valve spare coil (VC2) that stops in emergency When two voltage-type relay normally open contacts (KV22) are connected, the solenoid valve spare coil (VC2) that stops in emergency rapidly enters positive normal open Magnetic is flowed to obtain, the valve of control is closed in solenoid valve quick acting of stopping in emergency, and is stopped in emergency,

If 2. the solenoid valve spare coil (VC2) that stops in emergency in off state, solenoid valve spare coil (VC2) nothing of stopping in emergency Electric current passes through, and when second voltage type relay normally open contact (KV22) is connected, stops in emergency solenoid valve spare coil (VC2) still Right no current passes through, and the solenoid valve that stops in emergency cannot close the valve of control；

3) when the switch of second switch module (K2) is off, i.e., during non-emergent parking：

(1) disconnected if the switch of first switch module (K1) is in, switching tube (100) cut-off, the 4th voltage-type relay touches Point is in static state, the not switch failure short circuit to stop in emergency major loop overcurrent and first switch module of the 4th voltage-type relay Control loop generates control signal, and the 4th malfunction indicator lamp (MIL4) is extinguishing,

(2) connected if the switch of first switch module (K1) is in, switching tube (100) conducting saturation, the 4th voltage-type relay Contact be in dynamic：

1. the 4th voltage-type relay normally open contact (KV42) is connected, to stop in emergency major loop overcurrent and first switch module Switch failure fault control circuit generates control signal：

A. silicon-controlled if (SCR) keeps silicon-controlled (SCR) to be connected, i.e. tertiary voltage type relay coil in triggering and conducting (KV31) it keeps being powered through silicon-controlled (SCR),

B. silicon-controlled if (SCR) is led in cut-off, tertiary voltage type relay coil (KV31) by diode D7, D8 branch Electricity, and silicon-controlled (SCR) is kept to end, until diode D7, D8 branch when the contact of the 4th voltage-type relay reverts to static state Road stops being powered to tertiary voltage type relay coil (KV31),

2. the 4th voltage-type relay normally open contact (KV43) is connected, the 4th malfunction indicator lamp (MIL4) is lighted, user is prompted to exist The switch failure short circuit of first switch module (K1) during non-emergent parking,

If the solenoid valve spare coil (VC2) that (3) stops in emergency is in non-off state, switching tube (200) conducting saturation, the 5th Voltage-type relay coil (KV51) is powered, i.e., the contact of the 5th voltage-type relay is in dynamic, the 5th voltage-type relay Normally opened contact (KV52) in an ON state, light by the 5th malfunction indicator lamp (MIL5),

(4) if the solenoid valve spare coil (VC2) that stops in emergency is in off state, switching tube (200) cut-off, the 5th voltage-type Relay coil (KV51) no power, the i.e. contact of the 5th voltage-type relay are in static state, the 5th voltage-type relay normally open (KV52) is off for contact, and the 5th malfunction indicator lamp (MIL5) is extinguished, and user is prompted to stop in emergency solenoid valve siding (VC2) open circuit is enclosed,

(5) whether no matter the first current relay normally-closed contact (KI12) is connected, second voltage type relay coil (KV21) is equal Must not be electric, the contact of second voltage type relay is in static state, and Fisrt fault indicator light (MIL1) extinguishes；

4) when the switch of second switch module (K2) in an ON state, that is, stop in emergency during, stop in emergency solenoid valve main line Enclose (VC1) by electric current be more than its maximum allowed current when, the contact of the second current relay is in dynamic, i.e., the second electricity Flow pattern relay normally open contact (KI22) is connected, then form trigger circuit by resistance R6 and R7 generates triggering to silicon-controlled (SCR) Signal：

If (1) silicon-controlled (SCR) is in the conduction state, silicon-controlled (SCR) is kept to be connected, tertiary voltage type relay coil (KV31) it keeps being powered through silicon-controlled (SCR),

(2) silicon-controlled if (SCR) triggers silicon-controlled (SCR) conducting, tertiary voltage type relay coil in cut-off state (KV31) it is powered through silicon-controlled (SCR)；

5) when the switch of second switch module (K2) in an ON state, that is, stop in emergency during, stop in emergency solenoid valve main line Enclose (VC1) by electric current be less than or equal to maximum allowed current when, the contact of the second current relay is in static state, i.e., second Current relay normally opened contact (KI22) disconnects, then forming trigger circuit by resistance R6 and R7 does not generate silicon-controlled (SCR) Trigger signal；

6) when silicon-controlled (SCR) is on or/and the 4th voltage-type relay normally open contact (KV42) is in connection, third electricity Die mould relay coil (KV31) is powered, i.e., the contact of tertiary voltage type relay is in dynamic：

(1) the tertiary voltage type relay normally closed contact (KV33) being serially connected in the major loop that stops in emergency disconnects, to master of stopping in emergency Circuit carries out physical break protection,

(2) the common end of tertiary voltage type relay two-way contact (KV32) is connected with normally open end, lights the second malfunction indicator lamp (MIL2), the switch failure short circuit that user is prompted to stop in emergency major loop overcurrent or/and first switch module：

1. when the second malfunction indicator lamp (MIL2) is lighted during diesel engine stops in emergency, illustrate major loop overcurrent of stopping in emergency,

2. when the 4th malfunction indicator lamp (MIL4) is always maintained at OFF state, then, the second malfunction indicator lamp (MIL2) lighted is said Bright major loop overcurrent of stopping in emergency,

3. when the second malfunction indicator lamp (MIL2) is lit during the non-emergent parking of diesel engine by extinguishing, at this time with the 4th failure Indicator light (MIL4) function is identical, that is, illustrates the switch failure short circuit of first switch module (K1),

4. when the second malfunction indicator lamp (MIL2) is remain on, and the 4th malfunction indicator lamp during the non-emergent parking of diesel engine (MIL4) be lit by extinguishing, then in the second malfunction indicator lamp (MIL2) for lighting, illustrate to stop in emergency major loop overcurrent with The switch failure short circuit of first switch module；

7) when the switch of second switch module (K2) in an ON state, that is, stop in emergency during, solenoid valve master to be stopped in emergency Coil (VC1) by electric current be less than its extinction current when, the contact of the first current relay is in static state, the first electricity Flow pattern relay normally closed contact (KI12) is connected, and second voltage type relay coil (KV21) obtains electric, second voltage type relay Contact enter dynamic, using stop in emergency back-up circuit control stop in emergency, and if at the contact of tertiary voltage type relay In static state, then Fisrt fault indicator light (MIL1) is lighted, user is prompted not carry out the major loop that stops in emergency of physical break protection Undercurrent, otherwise, Fisrt fault indicator light (MIL1) extinguish；

8) when flow through the solenoid valve main coil (VC1) that stops in emergency electric current be less than or equal to its maximum allowed current, more than or equal to it During extinction current, the major loop that stops in emergency control diesel engine stops in emergency；

9) it after silicon-controlled (SCR) triggers admittance, waits to remove parking power supply (DC1) and stand-by power supply (DC2), silicon-controlled (SCR) Cut-off, the i.e. contact of tertiary voltage type relay are static state by Dynamic- Recovery.
The implementation method of circuit 10. diesel engine according to claim 9 stops in emergency, which is characterized in that described is urgent The extinction current of electromagnetic valve for braking spare coil (VC2) refers to：Guarantee is stopped in emergency solenoid valve normal work and is flowed through tight The minimum current of anxious electromagnetic valve for braking spare coil (VC2).