CN106555631A - Engine system and its control method - Google Patents
Engine system and its control method Download PDFInfo
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- CN106555631A CN106555631A CN201510631724.0A CN201510631724A CN106555631A CN 106555631 A CN106555631 A CN 106555631A CN 201510631724 A CN201510631724 A CN 201510631724A CN 106555631 A CN106555631 A CN 106555631A
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- coolant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
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Abstract
A kind of engine system, can realize within the time as short as possible, make the temperature of engine system rise to startup ideal temperature.The start-up temperature when engine system is also included for starting to the engine system carries out the auxiliary temperature elevation system for aiding in intensification.The auxiliary temperature elevation system includes the first exhaust gas collecting pipe, the second exhaust gas collecting pipe, tail gas return duct, heat exchange department.In the heat exchange department, with the connecting tube for being connected first exhaust gas collecting pipe with the tail gas return duct, the coolant circulating line, the oil circulation pipeline pass through the heat exchange department, and the connecting tube is contacted in the heat exchange department with the coolant circulating line and the oil circulation pipeline.
Description
Technical field
The present invention relates to a kind of engine system, systems can shorten engine cold-start when
Between engine system and its control method.
Background technology
It is well known that using under cryogenic, the abrasion of engine system is quite serious, according to statistics, greatly
The cylinder wear of about 50% engine is that occur in start-up course, and when in the winter time, engine system
Start to damage and more take place frequently.
This is that due under cryogenic, oil body increase, mobility are deteriorated, so as to cannot be quick
Ground engaging friction surface forming oil film so that the surface such as cylinder wall and bearing is lubricating characteristics degraded.
On the other hand, under cryogenic, the sulfur oxide that produces in combustion process and condense on cylinder wall
There is chemical reaction and produce acidic materials in water droplet, therefore, the generation of this acidic materials can cause engine
Interior metal occurs damaging (abrasion), and then the alloy of bearing shell can be caused to damage so that watt carry on the back and between axle journal
The coefficient of expansion it is different, fit clearance diminishes and becomes uneven, with the operating of engine system, weares and teares
Degree further can aggravate.For driver, in addition to damaging engine, most direct table
Elephant is the obvious increase of oil consumption.
The present inventor is analyzed and is studied to the difficult producing cause of engine cold-start, is finally given as follows
Reason：
(1) viscosity becomes big to machine oil under cryogenic so that the bent axle of the internal combustion engine in engine system turns
Dynamic resistance increases, thus is unable to reach the startup rotating speed of regulation, or even cannot rotate；
(2) under cryogenic conditions gasoline vaporization degradation, simultaneously because speed of crankshaft is low, it is impossible to formed
The desired amount of burning mixture；
(3) viscosity increases the electrolyte of battery under cryogenic, and internal resistance increase causes voltage to decline,
Capacitance reduces undercharge, and spark intensity when making startup in ignition system weakens, it is not easy to light flammable
Mixed gas.
As long as in addition, the inventors discovered that within the time as short as possible rising to the temperature of engine system
Start ideal temperature (such as 90 DEG C), the abrasion between each part of engine system just can be greatly decreased, so as to
Engine system can be protected, the performance of engine system is improved.
Therefore, how to realize within the time as short as possible, make the temperature of engine system rise to startup ideal
Temperature is become as technical problem urgently to be resolved hurrily.
The content of the invention
The present invention makees to solve above-mentioned technical problem, its object is to offer one kind and can realize as far as possible
The temperature of engine system is made to rise to the engine system and its control for starting ideal temperature in the short time
Method, thereby, it is possible to the abrasion between each part of engine system is greatly decreased, protects engine system, carries
The performance of high engine system.
To achieve these goals, the first technical scheme of first aspect present invention provides a kind of engine system
System, including internal combustion engine, offgas duct, catalyst tank, tail gas discharging pipe, can be such that coolant circulates wherein
The coolant circulating line of flowing and the oil circulation pipeline that machine oil circulated wherein can be made, above-mentioned
Tail gas after burning in the internal combustion engine of engine system enters above-mentioned catalyst tank via above-mentioned offgas duct,
Then it is discharged to outside vehicle via above-mentioned tail gas discharging pipe, it is characterized in that, above-mentioned engine system is also wrapped
Include auxiliary temperature elevation system, startup when above-mentioned auxiliary temperature elevation system is for starting to above-mentioned engine system
Temperature carries out auxiliary intensification, and above-mentioned auxiliary temperature elevation system includes that the first exhaust gas collecting pipe, the second tail gas are received
Collector, tail gas return duct, heat exchange department, wherein：One end of above-mentioned first exhaust gas collecting pipe is connected to
It is positioned at the midway of the above-mentioned tail gas discharging pipe in the exhaust gas flow direction downstream of above-mentioned catalyst tank, above-mentioned
The other end of the first exhaust gas collecting pipe is connected with one end of above-mentioned heat exchange department, above-mentioned second exhaust collection
One end of pipe is connected to the above-mentioned offgas duct positioned at the exhaust gas flow direction upstream side of above-mentioned catalyst tank
First position, the other end of above-mentioned second exhaust gas collecting pipe are connected to above-mentioned first exhaust gas collecting pipe
Halfway, one end of above-mentioned tail gas return duct is connected with the other end of above-mentioned heat exchange department, and above-mentioned tail gas is returned
The other end of flow tube is connected to the above-mentioned tail gas positioned at the exhaust gas flow direction upstream side of above-mentioned catalyst tank
The second position of pipe, the said second position of above-mentioned offgas duct are located at above-mentioned the first of above-mentioned offgas duct
Between position and above-mentioned catalyst tank, in the above-mentioned first position of above-mentioned offgas duct and said second position
Between be provided with check valve, above-mentioned check valve allows upstream lateral tail gas of the tail gas from exhaust gas flow direction
The downstream flowing of flow direction, is provided with for from above-mentioned in the midway of above-mentioned first exhaust gas collecting pipe
Tail gas discharging pipe aspirates the first aspiration pump of tail gas, in above-mentioned second exhaust gas collecting pipe by above-mentioned tail gas
One side of pipe is provided with the second pumping for the above-mentioned first position suction tail gas from above-mentioned offgas duct
Pump, the midway of above-mentioned tail gas return duct be provided with for from intake-gas in above-mentioned heat exchange department and will
3rd aspiration pump of the said second position of its force feed to above-mentioned offgas duct, in above-mentioned heat exchange department,
With the connecting tube for being connected above-mentioned first exhaust gas collecting pipe with above-mentioned tail gas return duct, above-mentioned coolant
Circulating line, said engine oil circulating line pass through above-mentioned heat exchange department, and make above-mentioned connecting tube cold with above-mentioned
But liquid circulating line and said engine oil circulating line are contacted in above-mentioned heat exchange department.
According to configured as described above, by making above-mentioned connecting tube with above-mentioned coolant circulating line and above-mentioned machine
Oil circulation pipe is contacted in above-mentioned heat exchange department, so as to make the tail gas of the high temperature flowed in connecting tube
Enter with the coolant and machine oil for flowing in above-mentioned coolant circulating line and said engine oil circulating line respectively
Row heat exchange, thus, it is possible to realize within the time as short as possible, make the temperature of engine system rise to startup
Ideal temperature, and then the abrasion between each part of engine system can be greatly decreased, engine system is protected,
Improve the performance of engine system.
The engine system of the second technical scheme of first aspect present invention is in first aspect present invention
On the basis of the engine system of the first technical scheme, it is characterized in that, in above-mentioned first exhaust gas collecting pipe
Aspiration pump set location and the diverging positions that diverged of above-mentioned second exhaust gas collecting pipe between be provided with
One pressure sensor, above-mentioned first pressure sensor is for the tail gas to aspirating from above-mentioned tail gas discharging pipe
Pressure detected, in aspiration pump set location and above-mentioned second tail of above-mentioned second exhaust gas collecting pipe
Second pressure sensor is provided between the other end of gas collecting pipe, above-mentioned second pressure sensor is used for
The pressure of the tail gas to aspirating from above-mentioned offgas duct is detected.
According to configured as described above, can according to the pressure detected by above-mentioned first pressure sensor and
The comparative result of the pressure detected by above-mentioned second pressure sensor, adjust above-mentioned first suction pump and/
Or working unit time or the amount of unit intake-gas of above-mentioned second suction pump.
The engine system of the 3rd technical scheme of first aspect present invention is in first aspect present invention
On the basis of the engine system of the first technical scheme, it is characterized in that, in above-mentioned coolant circulating line
Midway is provided with cooling-water temperature transmitter, and above-mentioned cooling-water temperature transmitter is for following in above-mentioned coolant
The temperature of the coolant circulated in endless tube road is detected, is arranged in the midway of said engine oil circulating line
Organic oil temperature sensor, said engine oil temperature sensor is for the recycle stream in said engine oil circulating line
The temperature of dynamic machine oil is detected.
The engine system of the 4th technical scheme of first aspect present invention is in first aspect present invention
On the basis of the engine system of the first technical scheme, it is characterized in that, in above-mentioned coolant circulating line
It is respectively provided with the upstream side of above-mentioned heat exchange department of above-mentioned auxiliary temperature elevation system and the pipeline in downstream
Have open and close valve, opened by the above-mentioned open and close valve of the upstream side and downstream by above-mentioned heat exchange department is arranged at and
Close, whether coolant can be controlled into above-mentioned heat exchange department.
According to configured as described above, high temperature can be only made after the temperature of coolant reaches preferable start-up temperature
Tail gas machine oil is heated, thus improve the efficiency of heating surface.
The engine system of the 5th technical scheme of first aspect present invention is in first aspect present invention
On the basis of the engine system of the arbitrary technical scheme in the first technical scheme to the 4th technical scheme,
It is characterized in that, above-mentioned coolant circulating line and said engine oil circulating line are cylindrical, above-mentioned connecting tube
Cylindrical, above-mentioned connecting tube is with above-mentioned coolant circulating line and said engine oil circulating line in above-mentioned heat
Linear contact lay in exchange part.
According to configured as described above, the tail gas of the high temperature flowed in connecting tube can be made with respectively above-mentioned
The coolant and machine oil flowed in coolant circulating line and said engine oil circulating line carries out heat exchange.
The engine system of the 6th technical scheme of first aspect present invention is in first aspect present invention
On the basis of the engine system of the arbitrary technical scheme in the first technical scheme to the 4th technical scheme,
It is characterized in that, above-mentioned coolant circulating line and said engine oil circulating line are in prism-shaped, above-mentioned connecting tube
In prism-shaped, above-mentioned connecting tube is with above-mentioned coolant circulating line and said engine oil circulating line in above-mentioned heat
Face contact in exchange part.
According to configured as described above, except making the tail gas of the high temperature flowed in connecting tube and exist respectively
The coolant and machine oil flowed in above-mentioned coolant circulating line and said engine oil circulating line carries out heat exchange,
Can also contact because of mutual face, and make the in hgher efficiency of heat exchange.
First technical scheme of second aspect present invention provides a kind of first technology of first aspect present invention
The control method of the engine system of scheme, is characterized in that, the control method bag of the engine system
Include：The cooling flowed in above-mentioned coolant circulating line and said engine oil circulating line during to starting respectively
Whether the temperature of liquid and machine oil reaches and starts the startup initial temperature that judged of ideal temperature and judge step；It is right
Whether the catalyst being arranged in above-mentioned catalyst tank reaches the catalyst activity judged by active temperature
Judge step；And to being heated using above-mentioned auxiliary temperature elevation system after in above-mentioned coolant circulation pipe
Whether the coolant and machine oil flowed in road and said engine oil circulating line reaches startup ideal temperature is sentenced
Disconnected profit temperature judges step.
According to configured as described above, the tail gas of the high temperature flowed in connecting tube can be made with respectively above-mentioned cold
But the coolant and machine oil for flowing in liquid circulating line and said engine oil circulating line carries out heat exchange, thus, it is possible to
It is enough to realize within the time as short as possible making the temperature of engine system rise to startup ideal temperature, Jin Erneng
The abrasion between each part of engine system is enough greatly decreased, engine system is protected, engine system is improved
Performance.
The control method of the engine system of the second technical scheme of second aspect present invention is in the present invention
On the basis of the control method of the engine system of the first technical scheme of second aspect, it is characterized in that,
In above-mentioned startup initial temperature judges step, coolant and the temperature of machine oil upon start up reach or surpass
When crossing startup ideal temperature, above-mentioned first aspiration pump, above-mentioned second aspiration pump and above-mentioned 3rd aspiration pump are closed,
When coolant and the temperature of machine oil upon start up not yet reaches startup ideal temperature, above-mentioned catalyst is carried out
Activity judgment step.
The control method of the engine system of the 3rd technical scheme of second aspect present invention is in the present invention
On the basis of the control method of the engine system of the first technical scheme of second aspect, it is characterized in that,
In above-mentioned catalyst activity judges step, when catalyst reaches active temperature, above-mentioned first is taken out
Air pump, above-mentioned second aspiration pump and above-mentioned 3rd aspiration pump are opened, and now, the tail gas of high temperature is from above-mentioned tail gas
The first position of pipe and above-mentioned tail gas discharging pipe are respectively via above-mentioned first exhaust gas collecting pipe and above-mentioned second tail
Gas collecting pipe enters above-mentioned heat exchange department, and is back to the second of above-mentioned offgas duct via above-mentioned tail gas return line flow
Position, then carries out above-mentioned profit temperature and judges step, when being judged as that catalyst not yet reaches active temperature,
Above-mentioned first aspiration pump and above-mentioned 3rd aspiration pump are opened, and above-mentioned second aspiration pump cuts out, now,
The tail gas of high temperature only enters above-mentioned heat exchange department via above-mentioned first exhaust gas collecting pipe from above-mentioned tail gas discharging pipe,
And the second place of above-mentioned offgas duct is back to via above-mentioned tail gas return line flow, then carry out above-mentioned profit temperature
Judge step.
According to configured as described above, when catalyst is not reaching to active temperature, the tail gas of high temperature is not only to machine
Oil and coolant are heated, and also the catalyst to not yet reaching active temperature in catalyst tank carries out secondary adding
Heat.
The control method of the engine system of the 4th technical scheme of second aspect present invention is in the present invention
On the basis of the control method of the engine system of the 3rd technical scheme of second aspect, it is characterized in that,
Above-mentioned coolant circulating line the above-mentioned heat exchange department positioned at above-mentioned auxiliary temperature elevation system upstream side and
Open and close valve is respectively arranged with the pipeline in downstream, in above-mentioned profit temperature judges step, when coolant
When the temperature of temperature and machine oil respectively less than starts ideal temperature, keep or enter be about to above-mentioned first aspiration pump, on
The action that the second aspiration pump and above-mentioned 3rd aspiration pump are opened is stated, when the temperature and above-mentioned machine of above-mentioned coolant
When the temperature of oil is all higher than starting ideal temperature, whether the vehicle shutdown in stopped status is sentenced to carry out vehicle
Disconnected, when the temperature of above-mentioned coolant meets and exceeds startup ideal temperature, and the temperature of machine oil is still not up to opened
During dynamic ideal temperature, above-mentioned open and close valve is closed, now coolant is may not flow into above-mentioned auxiliary temperature elevation system
Above-mentioned heat exchange department, then, keep or enter be about to above-mentioned first aspiration pump, above-mentioned second aspiration pump and on
State the action that the 3rd aspiration pump is opened.
According to configured as described above, high temperature can be only made after the temperature of coolant reaches preferable start-up temperature
Tail gas machine oil is heated, thus improve the efficiency of heating surface.
The control method of the engine system of the 6th technical scheme of second aspect present invention is in the present invention
The basis of the control method of the engine system of the 3rd technical scheme or the 4th technical scheme of second aspect
On, it is characterized in that, when above-mentioned first aspiration pump, above-mentioned second aspiration pump and above-mentioned 3rd aspiration pump are beaten
When opening, examine according to the pressure detected by above-mentioned first pressure sensor and by above-mentioned second pressure sensor
The comparative result of the pressure measured, adjusts the unit of above-mentioned first suction pump and/or above-mentioned second suction pump
Working time or the amount of unit intake-gas.
The control method of the engine system of the 6th technical scheme of second aspect present invention is in the present invention
On the basis of the control method of the engine system of the 5th technical scheme of second aspect, it is characterized in that,
According to the pressure sensing by the river outlet located at above-mentioned first exhaust gas collecting pipe and above-mentioned second exhaust gas collecting pipe
Pressure measured by device, adjusts the working unit time of above-mentioned first suction pump and above-mentioned second suction pump
Or the amount of unit intake-gas, to ensure that tail gas is constant into the pressure of above-mentioned heat exchange department after confluxing.
Description of the drawings
Fig. 1 is the integrally-built schematic construction of the engine system for schematically illustrating embodiment of the present invention 1
Figure, which has auxiliary temperature elevation system.
Fig. 2 is to represent carry out intensification heating to machine oil and coolant using the auxiliary temperature elevation system shown in Fig. 1
Schematic diagram.
Fig. 3 be represent shown in Fig. 1 auxiliary temperature elevation system in heat exchange department another embodiment signal
Figure.
Fig. 4 be represent shown in Fig. 1 auxiliary temperature elevation system in heat exchange department another embodiment signal
Figure.
Fig. 5 is the flow chart illustrated to the control method of the engine system of embodiment of the present invention 1.
Fig. 6 is the integrally-built schematic construction of the engine system for schematically illustrating embodiment of the present invention 2
Figure, which has auxiliary temperature elevation system, and is respectively arranged with coolant circulating line and oil circulation pipeline
Open and close valve.
Fig. 7 is the flow chart illustrated to the control method of the engine system of embodiment of the present invention 2.
Fig. 8 is in the control method of the engine system to embodiment of the present invention 1 and embodiment 2
The flow chart that individual sub-process is illustrated.
Specific embodiment
Hereinafter, referring to the drawings, the engine system of each embodiment of the invention is described in detail.
(embodiment 1)
First, with reference to Fig. 1, the overall structure to the engine system 100 of embodiment of the present invention 1
Illustrate.Wherein, Fig. 1 be schematically illustrate embodiment of the present invention 1 engine system 100 it is whole
The schematic configuration diagram of body structure, which has auxiliary temperature elevation system 200.
As shown in figure 1, the engine system 100 of the present invention includes air inlet 110, electronic throttle
140th, internal combustion engine 150, offgas duct 160, catalyst tank 170 and tail gas discharging pipe 180 etc..
In addition, above-mentioned engine system 100 has coolant circulating line P1 and oil circulation pipeline P2,
Coolant (such as water) can be circulated in coolant circulating line P1, and machine oil can be in oil circulation pipe
Circulate in road P2.
Additionally, being provided with cooling-water temperature transmitter TS1 in the midway of coolant circulating line P1, this is cold
But temperature of the liquid temp sensor TS1 for the coolant to circulating in coolant circulating line P1
Detected.The midway of oil circulation pipeline P2 is provided with oil temperature sensor TS2, the oil temperature
Sensor TS2 is detected for the temperature of the machine oil to circulating in oil circulation pipeline P2.
Tail gas after burning in the internal combustion engine 150 of engine system 100 is entered via offgas duct 160
Catalyst tank 170, is carried out to tail gas using the catalyst (not shown) being arranged in catalyst tank 170
After purified treatment, it is discharged to outside vehicle via tail gas discharging pipe 180.
Engine system 100 also includes auxiliary temperature elevation system 200, and the auxiliary temperature elevation system 200 is used for
Start-up temperature when starting to engine system 100 carries out auxiliary intensification.
Above-mentioned auxiliary temperature elevation system 200 include the first exhaust gas collecting pipe 210, the second exhaust gas collecting pipe 220,
Tail gas return duct 230, heat exchange department 240.
One end of first exhaust gas collecting pipe 210 is connected to positioned at the exhaust gas flow direction of catalyst tank 170
The midway of the tail gas discharging pipe 180 in downstream, the other end of the first exhaust gas collecting pipe 210 and heat exchange
One end connection in portion 240.
One end of second exhaust gas collecting pipe 210 is connected to positioned at the exhaust gas flow direction of catalyst tank 170
The first position of the offgas duct 160 of upstream side, the other end of the second exhaust gas collecting pipe 210 are connected to
The midway of above-mentioned first exhaust gas collecting pipe 210.
One end of tail gas return duct 230 is connected with the other end of heat exchange department 240, tail gas return duct 230
The other end be connected to the offgas duct 160 positioned at the exhaust gas flow direction upstream side of catalyst tank 170
Second position, and the said second position of offgas duct 160 is located at above-mentioned the first of offgas duct 160
Between position and catalyst tank 170.
In addition, being provided between the above-mentioned first position of offgas duct 160 and said second position unidirectional
Valve 161, the check valve 161 allow tail gas from the lateral exhaust gas flow direction in upstream in exhaust gas flow direction
Downstream is flowed (by taking Fig. 1 as an example, being flowed from left side to the right), and does not allow tail gas from tail gas stream
The upstream side flowing in the lateral exhaust gas flow direction in downstream in dynamic direction.
The midway of the first exhaust gas collecting pipe 210 is provided with the first aspiration pump 211, first aspiration pump
211 for from the suction tail gas of tail gas discharging pipe 180.In addition, in the pumping of the first exhaust gas collecting pipe 210
First pressure is provided between the diverging positions diverged by pump set location and the second exhaust gas collecting pipe 220
Sensor 212, the first pressure sensor 212 is for the tail gas to aspirating from tail gas discharging pipe 180
Pressure is detected.
A side by offgas duct 160 of the second exhaust gas collecting pipe 220 is provided with the second aspiration pump
221, second aspiration pump 221 is for from offgas duct 160 (first position) suction tail gas.In addition,
In the other end of the aspiration pump set location and the second exhaust gas collecting pipe 220 of the second exhaust gas collecting pipe 220
Between be provided with second pressure sensor 222, the second pressure sensor 222 is for from offgas duct
The pressure of the tail gas of 160 suctions is detected.
The midway of tail gas return duct 230 is provided with the 3rd aspiration pump 231, the 3rd aspiration pump 231
For from intake-gas in heat exchange department 240, and by its force feed to offgas duct 160 (second place).
In above-mentioned heat exchange department 240, with by the first exhaust gas collecting pipe 210 and tail gas return duct 230
The connecting tube 250 (with reference to Fig. 2) of connection.In the explanation of present embodiment 1, the first exhaust collection
Pipe 210, tail gas return duct 230 and connecting tube 250 are the different pipelines being interconnected, but the present invention is not
It is confined to this, it is also possible to constitute the pipeline of an one.In addition, above-mentioned coolant circulating line P1 and
Oil circulation pipeline P2 is equally also through heat exchange department 240.
Then, with reference to Fig. 2 to Fig. 4, the internal structure of heat exchange department 240 is described in detail.Wherein,
Fig. 2 is to represent carry out intensification heating to machine oil and coolant using the auxiliary temperature elevation system 200 shown in Fig. 1
Schematic diagram.Fig. 3 be represent shown in Fig. 1 auxiliary temperature elevation system 200 in heat exchange department 240 another reality
Apply the schematic diagram of example.Fig. 4 be represent shown in Fig. 1 auxiliary temperature elevation system in heat exchange department 240 it is another
The schematic diagram of embodiment.
In the embodiment shown in Fig. 2, there is coolant circulating line in the inside of heat exchanger 240
P1, oil circulation pipeline P2, the company for connecting the first exhaust gas collecting pipe 210 and tail gas return duct 230
Adapter 250 and be arranged on coolant circulating line P1, between oil circulation pipeline P2 and connecting tube 250
Conducting strip 241.
The tail gas of high temperature flows into tail gas return duct via connecting tube 250 from the first exhaust gas collecting pipe 210
230, and during connecting tube 250 is flow through, the tail gas of high temperature with respectively in coolant circulation pipe
There is heat exchange in the coolant flowed in road P1 and oil circulation pipeline P2 and machine oil, with to coolant and machine
Oil is heated.
In an alternative embodiment as shown in figure 3, coolant circulating line P1 and oil circulation pipeline P2 examples
It is such as cylindrical, and connecting tube 250 is also for example cylindrical, and connecting tube 250 is circulated with coolant
Pipeline P1 and oil circulation pipeline P2 contacts, now, connecting tube 250 and coolant circulating line P1 and
It is linear contact lay between oil circulation pipeline P2.
In the another embodiment shown in Fig. 4, coolant circulating line P1 and oil circulation pipeline P2 are for example
In prism-shaped, and connecting tube 250 is also for example in prism-shaped, and makes connecting tube 250 and coolant circulation pipe
Road P1 and oil circulation pipeline P2 contacts, now, connecting tube 250 and coolant circulating line P1 and machine
Contact for face between oil circulation pipe P2.
Hereinafter, with reference to Fig. 5, the control method of the engine system 100 of embodiment of the present invention 1 is carried out
Explanation.Wherein, Fig. 5 is that the control method of the engine system 100 to embodiment of the present invention 1 is said
Bright flow chart.
As shown in figure 5, at vehicle launch (step S100), first with temperature sensor (cooling
Liquid temp sensor TS1 and oil temperature sensor TS2), detect and gather respectively in coolant circulation pipe
The coolant flowed in road P1 and oil circulation pipeline P2 and the temperature (step S200) of machine oil.
Then, start-up temperature is judged (step S300).
When start-up temperature (i.e. temperature T2 of temperature T1 and machine oil of coolant) is more than or equal to the preferable temperature of startup
Degree (such as 90 DEG C) when, i.e., when " >=90 DEG C " are judged as in step S300, by the first aspiration pump 211,
Second aspiration pump 221 and the 3rd aspiration pump 231 are turned off (step S310).
When start-up temperature (i.e. the temperature of the temperature and machine oil of coolant) less than start ideal temperature (for example
90 DEG C) when, i.e., (step when " 90 DEG C of ＜ " is judged as in step S300, is judged to catalyst activity
Rapid S400).
When being judged as that catalyst has reached active temperature (such as 350 DEG C), i.e., when sentencing in step S400
Break for "Yes" when, the first aspiration pump 211, the second aspiration pump 221 and the 3rd aspiration pump 231 are opened
(step S410), now, the tail gas of high temperature is from offgas duct 160 (first position) and tail gas discharging pipe
180 enter heat exchange department 240 via the first exhaust gas collecting pipe 210 and the second exhaust gas collecting pipe 220 respectively,
And offgas duct 160 (second place) is flow back into via tail gas return duct 230.Then carry out profit temperature to sentence
Disconnected (step S500).
Conversely, when being judged as that catalyst not yet reaches active temperature (such as 350 DEG C), i.e., when step S400
In when being judged as "No", the first aspiration pump 211 and the 3rd aspiration pump 231 are opened, and by the second pumping
Pump 221 cuts out (step S420), and now, the tail gas of high temperature is only from tail gas discharging pipe 180 via the first tail
Gas collecting pipe 210 enters heat exchange department 240, and via tail gas return duct 230 flow back into offgas duct 160 (
The second place), the tail gas of high temperature is not only heated to machine oil and coolant, also in catalyst tank 170
The catalyst for not yet reaching active temperature carries out reheating.Then carry out profit temperature and judge (step S500).
In profit temperature judgement (step S500), to temperature T2 of temperature T1 and machine oil of coolant it is
It is no reach startup ideal temperature (such as 90 DEG C) judged.
As the rate of rise in temperature of coolant is faster than the rate of rise in temperature of machine oil, therefore, cool down in theory
Temperature T2 of temperature T1 of liquid more than machine oil.Here, only the situation of common T1 ＞ T2 is illustrated,
And omit the explanation to few T2 ＞ T1 for occurring.
When temperature T2 of temperature T1 and machine oil of coolant respectively less than start ideal temperature (such as 90 DEG C),
I.e. when " 90 DEG C of T2 ＜ T1 ＜ " is judged as in step S500, return to step S410 is kept first
The state that aspiration pump 211, the second aspiration pump 221 and the 3rd aspiration pump 231 are opened.Then carry out again
Profit temperature judges (step S500).
When temperature T2 of temperature T1 and machine oil of coolant is all higher than starting ideal temperature (such as 90 DEG C)
When, when " T1 and T2 >=90 DEG C " are judged as in step S500, whether carry out vehicle in shutting down
The vehicle of state is shut down and judges (step S600).
If ECU does not receive halt instruction (being judged as "No" in step S600), step is returned
Rapid S200, detects and gathers flow in coolant circulating line P1 and oil circulation pipeline P2 respectively cold
But the temperature of liquid and machine oil., whereas if ECU receives halt instruction (being judged as "Yes" in step S600)
When, terminate whole flow process (step S700).
(embodiment 2)
Hereinafter, with reference to Fig. 6, the overall structure to the engine system 100 ' of embodiment of the present invention 2
Illustrate.Wherein, Fig. 6 be schematically illustrate embodiment of the present invention 2 engine system 100 ' it is whole
The schematic configuration diagram of body structure, which has auxiliary temperature elevation system 200, and sets on coolant circulating line P1
It is equipped with open and close valve V1 and V2..
In addition, for identical reference is marked with 1 identical inscape of embodiment, and omitting which
Describe in detail.Here, only illustrating to the part different from embodiment 1.
Present embodiment 2 with the difference of embodiment 1 is, in the position of coolant circulating line P1
It is respectively provided with the upstream side of heat exchange department 240 of above-mentioned auxiliary temperature elevation system 200 and the pipeline in downstream
There are open and close valve V1 and V2.By by the upstream side and downstream that are arranged at above-mentioned heat exchange department 240 open
Valve closing V1 and V2 are opened and closed, and whether coolant can be controlled into heat exchange department 240.
Then, with reference to Fig. 7, the control method of the engine system 100 ' of embodiment of the present invention 2 is entered
Row explanation.Wherein, Fig. 7 is that the control method to the engine system 100 ' of embodiment of the present invention 2 is entered
The flow chart of row explanation.
With above similarly, for the control method identical step with the engine system 100 of embodiment 1
Suddenly, identical mark is marked, and description is omitted.Here, only to the portion different from embodiment 1
Divide and illustrate.
Present embodiment 2 with the difference of embodiment 1 is, profit temperature judges (step S500 ')
Determination methods it is different.
More particularly, the profit temperature in the control method of embodiment 2 judged in (step S500 '),
In the same manner as embodiment 1, whether startup ideal is reached to temperature T2 of temperature T1 and machine oil of coolant
Temperature (such as 90 DEG C) is judged.
In addition, similarly, only the situation of common T1 ＞ T2 is illustrated, and is omitted to few appearance
T2 ＞ T1 explanation.
When temperature T2 of temperature T1 and machine oil of coolant respectively less than start ideal temperature (such as 90 DEG C),
I.e. when in step S500 ' in when being judged as " 90 DEG C of T2 ＜ T1 ＜ ", in the same manner as embodiment 1, return
Step S410, keeps or enters and be about to the first aspiration pump 211, the second aspiration pump 221 and the 3rd aspiration pump 231
The action opened.Then profit temperature is carried out again judges (step S500 ').
As the rate of rise in temperature of coolant is faster than the rate of rise in temperature of machine oil, coolant is accordingly, there exist
Temperature T1 meet and exceed startup ideal temperature, and temperature T2 of machine oil still not up to starts ideal temperature
Situation.
In embodiment 1, continuation is heated to coolant and machine oil, until temperature T1 of coolant
Startup ideal temperature is met and exceeded with temperature T2 of machine oil.And in present embodiment 2, work as cooling
The temperature of liquid meets and exceeds startup ideal temperature (such as 90 DEG C), and temperature T2 of machine oil is still not up to
In the case of starting ideal temperature (such as 90 DEG C), i.e., be judged as in step S500 " T1 >=90 DEG C and
During 90 DEG C of T2 ＜ ", open and close valve V1 and V2 are closed, now coolant is may not flow into auxiliary temperature elevation system
200 heat exchange department 240 (step S510), then, return to step S410 keeps or enters to be about to first
The action that aspiration pump 211, the second aspiration pump 221 and the 3rd aspiration pump 231 are opened.Then carry out again
The judgement of profit temperature (step S500 ').
When temperature T2 of temperature T1 and machine oil of coolant is all higher than starting ideal temperature (such as 90 DEG C)
When, when in step S500 ' in when being judged as " T1 and T2 >=90 DEG C ", whether carry out vehicle in stopping
The vehicle of machine state is shut down and judges (step S600).
Remaining step is identical with embodiment 1.
Then, with reference to Fig. 8, the control to embodiment of the present invention 1 and the engine system of embodiment 2
Step S410 in method is illustrated.Fig. 8 is sending out to embodiment of the present invention 1 and embodiment 2
The flow chart that step S410 in the control method of motivation system is illustrated.
In above-mentioned embodiment 1 and embodiment 2, what step 410 was carried out is to maintain or enters to be about to first
The action that aspiration pump 211, the second aspiration pump 221 and the 3rd aspiration pump 231 are opened.But in different situations
Under, working unit time of the first aspiration pump 211 and the second aspiration pump 221 in step S410 (or it is single
The amount of position intake-gas) it is different.
More particularly, in step S410, including：Using first pressure sensor 212 and the second pressure
Force snesor 222, detects and gathers from tail gas discharging pipe 180 and offgas duct 160 (first position)
The step of pressure of the tail gas of place's suction (step S411)；To being detected by first pressure sensor 212
The pressure A that goes out and (step the step of be compared by the pressure B that second pressure sensor 222 is detected
Rapid S412).
In the pressure A detected by first pressure sensor 212 more than by second pressure sensor 222
During the pressure B for detecting, the shortening working unit time of the second suction pump 221 (or unit intake-gas
Amount) (step S413), conversely, the pressure A detected by first pressure sensor 212 less than by
During the pressure B that second pressure sensor 222 is detected, when working unit is shortened in the first suction pump 211
Between (or amount of unit intake-gas) (step S414).In addition, if by first pressure sensor 212
The pressure A for detecting keeps first to aspirate equal to the pressure B detected by second pressure sensor 222
The current state (step S415) of pump 211 and the second suction pump 221.
In addition, can be according to by the river outlet located at the first exhaust gas collecting pipe 210 and the second exhaust gas collecting pipe 220
Pressure sensor (not shown) measured by pressure, adjust the first suction pump 211 and the second suction
The working unit time of pump 221, to ensure that tail gas is constant into the pressure of heat exchange department 240 after confluxing.
The present invention is exemplarily described above in conjunction with accompanying drawing, it is clear that the present invention's implements simultaneously
It is not limited to the embodiments described above.Those of ordinary skill in the art will be readily apparent other advantages and
Modification.Therefore, in its wider range of aspect, the present invention is not limited to depicted herein and is retouched
The detail stated and representative embodiment.Therefore, it can without departing from such as appended claims and
On the premise of the spirit or scope of this general inventive concept that its equivalent is limited, various modification can be adapted.
In the above-described embodiment, it is illustrated by taking the engine system of naturally aspirated as an example, but this
It is bright to be not limited to this, it is also possible to suitable for turbocharged engine system.
Claims (12)
1. a kind of engine system (100,100 '), including internal combustion engine (150), offgas duct (160),
Catalyst tank (170), tail gas discharging pipe (180), the cooling that coolant circulated wherein can be made
Liquid circulating line (P1) and the oil circulation pipeline (P2) that machine oil circulated wherein can be made, in institute
Tail gas after burning in stating the internal combustion engine (150) of engine system (100,100 ') is via the tail
Tracheae (160) into the catalyst tank (170), then via the tail gas discharging pipe (180)
It is discharged to outside vehicle, it is characterised in that
The engine system (100,100 ') also includes auxiliary temperature elevation system (200), described auxiliary
Startup temperature when helping temperature elevation system (200) for starting to the engine system (100,100 ')
Degree carries out auxiliary intensification,
Auxiliary temperature elevation system (200) is received including the first exhaust gas collecting pipe (210), the second tail gas
Collector (220), tail gas return duct (230), heat exchange department (240), wherein：
One end of first exhaust gas collecting pipe (210) is connected to positioned at the catalyst tank (170)
Exhaust gas flow direction downstream the tail gas discharging pipe (180) midway, first tail gas receives
The other end of collector (210) is connected with one end of the heat exchange department (240),
One end of second exhaust gas collecting pipe (210) is connected to positioned at the catalyst tank (170)
Exhaust gas flow direction upstream side the offgas duct (160) first position, second tail gas
The other end of collecting pipe (210) is connected to the midway of first exhaust gas collecting pipe (210),
One end of the tail gas return duct (230) is connected with the other end of the heat exchange department (240),
The other end of the tail gas return duct (230) is connected to the tail gas positioned at the catalyst tank (170)
The second position of the offgas duct (160) of flow direction upstream side,
The second place of the offgas duct (160) is located at described the of the offgas duct (160)
Between one position and the catalyst tank (170),
It is provided between the first position of the offgas duct (160) and the second place unidirectional
Valve (161), the check valve (161) allow upstream lateral tail gas of the tail gas from exhaust gas flow direction
The downstream flowing of flow direction,
It is provided with for from the tail gas discharging pipe in the midway of first exhaust gas collecting pipe (210)
(180) first aspiration pump (211) of tail gas is aspirated,
Arrange in the side by the offgas duct (160) of second exhaust gas collecting pipe (220)
There is the second aspiration pump (221) for the first position suction tail gas from the offgas duct (160),
It is provided with for from the heat exchange department (240) in the midway of the tail gas return duct (230)
Middle intake-gas the 3rd aspiration pump by its force feed to the second place of the offgas duct (160)
(231),
In the heat exchange department (240), with by first exhaust gas collecting pipe (210) and institute
The connecting tube (250) that tail gas return duct (230) connects is stated,
The coolant circulating line (P1), the oil circulation pipeline (P2) are through the heat exchange department
(240), and the connecting tube (250) is made with the coolant circulating line (P1) and the machine oil
Circulating line (P2) contact in the heat exchange department (240).
2. engine system (100,100 ') as claimed in claim 1, it is characterised in that
In the aspiration pump set location and second exhaust collection of first exhaust gas collecting pipe (210)
It is provided with first pressure sensor (212) between pipe (220) diverging positions that diverged, described the
Pressure of one pressure sensor (212) for the tail gas to aspirating from the tail gas discharging pipe (180)
Detected,
In the aspiration pump set location and second exhaust collection of second exhaust gas collecting pipe (220)
Second pressure sensor (222) is provided between the other end of pipe (220), the second pressure is passed
Sensor (222) is detected for the pressure of the tail gas to aspirating from the offgas duct (160).
3. engine system (100,100 ') as claimed in claim 1, it is characterised in that
The midway of the coolant circulating line (P1) is provided with cooling-water temperature transmitter (TS1),
The cooling-water temperature transmitter (TS1) is for the recycle stream in the coolant circulating line (P1)
The temperature of dynamic coolant detected,
The midway of the oil circulation pipeline (P2) is provided with oil temperature sensor (TS2), it is described
Oil temperature sensor (TS2) is for the machine oil to circulating in the oil circulation pipeline (P2)
Temperature detected.
4. engine system (100 ') as claimed in claim 1, it is characterised in that
In the heat positioned at auxiliary temperature elevation system (200) of the coolant circulating line (P1)
Open and close valve (V1, V2) is respectively arranged with the pipeline of the upstream side and downstream of exchange part (240),
By will be arranged at the upstream side and downstream of the heat exchange department (240) the open and close valve (V1,
V2) open and close, whether coolant can be controlled into the heat exchange department (240).
5. engine system (100,100 ') as any one of Claims 1-4, its
It is characterised by,
The coolant circulating line (P1) and the oil circulation pipeline (P2) are cylindrical,
The connecting tube (250) is cylindrical,
The connecting tube (250) and the coolant circulating line (P1) and the oil circulation pipeline (P2)
The linear contact lay in the heat exchange department (240).
6. engine system (100,100 ') as any one of Claims 1-4, its
It is characterised by,
The coolant circulating line (P1) and the oil circulation pipeline (P2) in prism-shaped,
The connecting tube (250) in prism-shaped,
The connecting tube (250) and the coolant circulating line (P1) and the oil circulation pipeline (P2)
The face contact in the heat exchange department (240).
7. a kind of control method of engine system as claimed in claim 1 (100,100 '),
Characterized in that, the control method of the engine system includes：
Respectively in the coolant circulating line (P1) and the oil circulation pipeline (P2) during to starting
Whether the temperature of the coolant and machine oil of middle flowing reaches that to start the startup that judged of ideal temperature initially warm
Degree judges step；
Whether the catalyst to being arranged in the catalyst tank (170) reaches active temperature judges
Catalyst activity judge step；And
To using it is described auxiliary temperature elevation system (200) heat after in the coolant circulating line
(P1) whether the coolant and machine oil for and in the oil circulation pipeline (P2) flowing reaches the preferable temperature of startup
The profit temperature judged by degree judges step.
8. the control method of engine system (100,100 ') as claimed in claim 7, which is special
Levy and be,
In the startup initial temperature judges step,
When coolant and the temperature of machine oil upon start up meets or exceeds startup ideal temperature, close described
First aspiration pump (211), second aspiration pump (212) and the 3rd aspiration pump (213),
When coolant and the temperature of machine oil upon start up not yet reaches startup ideal temperature, described urging is carried out
Agent activity judgment step.
9. the control method of engine system (100,100 ') as claimed in claim 7, which is special
Levy and be,
In the catalyst activity judges step,
When catalyst reaches active temperature, by first aspiration pump (211), second pumping
Pump (221) and the 3rd aspiration pump (231) are opened, and now, the tail gas of high temperature is from the offgas duct (160)
First position and the tail gas discharging pipe (180) respectively via first exhaust gas collecting pipe (210) and
Second exhaust gas collecting pipe (220) is into the heat exchange department (240), and flows back via the tail gas
Pipe (230) flows back into the second place of the offgas duct (160), then carries out the profit temperature and judges
Step,
When being judged as that catalyst not yet reaches active temperature, by first aspiration pump (211) and described
3rd aspiration pump (231) is opened, and second aspiration pump (221) is closed, now, the tail of high temperature
Gas is only handed over into the heat from the tail gas discharging pipe (180) via first exhaust gas collecting pipe (210)
Portion (240) is changed, and the of the offgas duct (160) is flow back into via the tail gas return duct (230)
Two positions, then carry out the profit temperature and judge step.
10. the control method of engine system (100 ') as claimed in claim 9, its feature exist
In,
In the heat positioned at auxiliary temperature elevation system (200) of the coolant circulating line (P1)
Open and close valve (V1, V2) is respectively arranged with the pipeline of the upstream side and downstream of exchange part (240),
In the profit temperature judges step,
When the temperature (T2) of the temperature (T1) and machine oil of coolant respectively less than starts ideal temperature, keep
Or enter to be about to first aspiration pump (211), second aspiration pump (221) and the 3rd aspiration pump
(231) action opened,
When the temperature (T2) of the temperature (T1) and the machine oil of the coolant is all higher than starting ideal temperature
When, whether the vehicle in stopped status shuts down judgement to carry out vehicle,
When the temperature (T1) of the coolant meets and exceeds startup ideal temperature, and the temperature (T2) of machine oil
When still not up to starting ideal temperature, the open and close valve (V1, V2) is closed, now coolant will not flow
Enter to the heat exchange department (240) of auxiliary temperature elevation system (200), then, keep or enter to be about to
First aspiration pump (211), second aspiration pump (221) and the 3rd aspiration pump (231)
The action opened.
The control method of 11. engine systems (100,100 ') as described in claim 9 or 10,
Characterized in that,
When first aspiration pump (211), second aspiration pump (221) and the 3rd aspiration pump (231)
When opening, according to the pressure (A) detected by the first pressure sensor (212) and by described
The comparative result of the pressure (B) that second pressure sensor (222) is detected, adjusts described first and takes out
The working unit time or unit intake-gas of sucking pump (211) and/or second suction pump (221)
Amount.
The control method of 12. engine systems (100,100 ') as claimed in claim 11, its
It is characterised by,
According to by located at first exhaust gas collecting pipe (210) and second exhaust gas collecting pipe (220)
Pressure measured by the pressure sensor of river outlet, adjusts first suction pump (211) and described
The working unit time of two suction pumps (221) or the amount of unit intake-gas, after ensureing that tail gas confluxes
Pressure into the heat exchange department (240) is constant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510631724.0A CN106555631B (en) | 2015-09-29 | 2015-09-29 | Engine system and its control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510631724.0A CN106555631B (en) | 2015-09-29 | 2015-09-29 | Engine system and its control method |
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| CN106555631B CN106555631B (en) | 2019-02-05 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111237026A (en) * | 2020-03-25 | 2020-06-05 | 北京汽车股份有限公司 | Engine oil heating device for engine, engine with engine oil heating device and vehicle |
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| DE19737818A1 (en) * | 1996-08-30 | 1998-03-05 | Denso Corp | Cooling water circulation circuit for vehicle IC engine |
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| US20080066697A1 (en) * | 2006-09-20 | 2008-03-20 | Man Nutzfahrzeuge Oesterreich Ag | Cooling system of an internal combustion engine having charge air feed |
| DE102013113240A1 (en) * | 2013-08-12 | 2015-02-12 | Hyundai Motor Co. | COOLING DEVICE AND COOLING CONTROL METHOD FOR EGR GAS AND ENGINE OIL |
| CN104727985A (en) * | 2013-12-20 | 2015-06-24 | 现代自动车株式会社 | Apparatus for adjusting temperature of oil for vehicle and method for controlling the apparatus |
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2015
- 2015-09-29 CN CN201510631724.0A patent/CN106555631B/en not_active Expired - Fee Related
Patent Citations (6)
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|---|---|---|---|---|
| GB1325526A (en) * | 1970-04-29 | 1973-08-01 | Saviem | Cooling systems of supercharged diesel engines |
| RU2109148C1 (en) * | 1996-07-16 | 1998-04-20 | Акционерное общество закрытого типа "Зил-КАР" | Combination system of automatic control and regulation of internal combustion engine thermal conditions |
| DE19737818A1 (en) * | 1996-08-30 | 1998-03-05 | Denso Corp | Cooling water circulation circuit for vehicle IC engine |
| US20080066697A1 (en) * | 2006-09-20 | 2008-03-20 | Man Nutzfahrzeuge Oesterreich Ag | Cooling system of an internal combustion engine having charge air feed |
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| CN111237026A (en) * | 2020-03-25 | 2020-06-05 | 北京汽车股份有限公司 | Engine oil heating device for engine, engine with engine oil heating device and vehicle |
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| CN106555631B (en) | 2019-02-05 |
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