CN106555631B - Engine system and its control method - Google Patents
Engine system and its control method Download PDFInfo
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- CN106555631B CN106555631B CN201510631724.0A CN201510631724A CN106555631B CN 106555631 B CN106555631 B CN 106555631B CN 201510631724 A CN201510631724 A CN 201510631724A CN 106555631 B CN106555631 B CN 106555631B
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- temperature
- aspiration pump
- coolant liquid
- exhaust gas
- collecting pipe
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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
Abstract
A kind of engine system, can be realized makes the temperature of engine system rise to starting ideal temperature in the shortest possible time.The start-up temperature when engine system further includes for starting to the engine system carries out the auxiliary temperature elevation system of auxiliary heating.The auxiliary temperature elevation system includes the first exhaust gas collecting pipe, the second exhaust gas collecting pipe, tail gas return pipe, heat exchange department.In the heat exchange department, with the connecting tube for connecting first exhaust gas collecting pipe with the tail gas return pipe, the coolant liquid circulating line, the oil circulation pipeline pass through the heat exchange department, and contact the connecting tube in the heat exchange department with the coolant liquid circulating line and the oil circulation pipeline.
Description
Technical field
The present invention relates to a kind of engine systems, systems can be shortened the hair of the time of engine cold-start
Motivation system and its control method.
Background technique
It is well known that using under cryogenic, the abrasion of engine system is quite serious, according to statistics, about 50%
The cylinder wear of engine be occur during startup, and in winter when, engine system starting damage more takes place frequently.
This is because under cryogenic, lubricating oil viscosity increases, mobility is deteriorated, and rubs to can not be rapidly introduced into
Surface is wiped to form oil film, so that the surfaces such as cylinder wall and bearing is lubricating characteristics degraded.
On the other hand, under cryogenic, the sulfur oxide generated in combustion process and the water droplet condensed on cylinder wall are sent out
It is biochemical reaction and generate acidic materials, therefore, the generation of this acidic materials will lead to in-engine metal and damage
(abrasion), and then will lead to the alloy damage of bearing shell so that watt back is different from the coefficient of expansion between axle journal, fit clearance become smaller and
Become uneven, with the operating of engine system, the degree of abrasion can further aggravate.For driver, in addition to
It damages except engine, most direct presentation is obviously increasing for oil consumption.
The present inventor analyzes and studies to the producing cause of engine cold-start difficulty, finally obtains following reason:
(1) viscosity becomes larger machine oil under cryogenic, so that the crank rotation resistance of the internal combustion engine in engine system increases
Greatly, thus as defined in being unable to reach start revolving speed, or even can not rotate；
(2) under cryogenic conditions gasoline vaporization degradation, simultaneously because speed of crankshaft is low, can not be formed it is the desired amount of can
Fire mixed gas；
(3) viscosity increases the electrolyte of battery under cryogenic, and internal resistance increases, and causes voltage to decline, capacitance subtracts
Few undercharge weakens spark intensity when starting in ignition system, it is not easy to light burning mixture.
In addition, the inventors discovered that as long as the temperature of engine system is made to rise to starting reason in the shortest possible time
Think temperature (such as 90 DEG C), the abrasion between each component of engine system just can be greatly decreased, so as to protect engine system,
Improve the performance of engine system.
Therefore, how to realize in the shortest possible time makes the temperature of engine system rise to starting ideal temperature just
As technical problem urgently to be resolved.
Summary of the invention
The present invention makees to solve above-mentioned technical problem, and its purpose is to provide one kind can be realized when as short as possible
The interior engine system and its control method for making the temperature of engine system rise to starting ideal temperature, thereby, it is possible to big
Width reduces the abrasion between each component of engine system, protects engine system, improves the performance of engine system.
To achieve the goals above, the first technical solution of first aspect present invention provides a kind of engine system, including
Internal combustion engine, offgas duct, catalyst tank, tail gas discharging pipe, can make coolant liquid the coolant liquid circulating line wherein circulated with
And machine oil can be made in the oil circulation pipeline wherein circulated, the tail gas after burning in the internal combustion engine of above-mentioned engine system
Enter above-mentioned catalyst tank via above-mentioned offgas duct, is then discharged to outside vehicle via above-mentioned tail gas discharging pipe, characterized in that on
Stating engine system further includes auxiliary temperature elevation system, and above-mentioned auxiliary temperature elevation system is used to open when starting above-mentioned engine system
Dynamic temperature carries out auxiliary heating, and above-mentioned auxiliary temperature elevation system includes the first exhaust gas collecting pipe, the second exhaust gas collecting pipe, tail gas reflux
Pipe, heat exchange department, in which: one end of above-mentioned first exhaust gas collecting pipe is connected to positioned at the exhaust gas flow direction of above-mentioned catalyst tank
The midway of the above-mentioned tail gas discharging pipe in downstream side, the other end of above-mentioned first exhaust gas collecting pipe and one end of above-mentioned heat exchange department connect
It connects, one end of above-mentioned second exhaust gas collecting pipe is connected to the above-mentioned tail positioned at the exhaust gas flow direction upstream side of above-mentioned catalyst tank
At the first position of tracheae, the other end of above-mentioned second exhaust gas collecting pipe is connected to the midway of above-mentioned first exhaust gas collecting pipe, on
The one end for stating tail gas return pipe is connect with the other end of above-mentioned heat exchange department, and the other end of above-mentioned tail gas return pipe, which is connected to, to be located at
The second place of the above-mentioned offgas duct of the exhaust gas flow direction upstream side of above-mentioned catalyst tank, above-mentioned the second of above-mentioned offgas duct
Position is located between the above-mentioned first position and above-mentioned catalyst tank of above-mentioned offgas duct, in the above-mentioned first position of above-mentioned offgas duct
It is provided with check valve between said second position, above-mentioned check valve allows tail gas from the upstream side in exhaust gas flow direction to tail gas
The downstream side of flow direction is flowed, and is provided in the midway of above-mentioned first exhaust gas collecting pipe for aspirating from above-mentioned tail gas discharging pipe
First aspiration pump of tail gas is provided in the one end by above-mentioned offgas duct of above-mentioned second exhaust gas collecting pipe for from above-mentioned tail
Second aspiration pump of the above-mentioned first position suction tail gas of tracheae, is provided in the midway of above-mentioned tail gas return pipe for from above-mentioned
Intake-gas and by the third aspiration pump of the said second position of its force feed to above-mentioned offgas duct in heat exchange department, is handed in above-mentioned heat
It changes in portion, there is the connecting tube for connecting above-mentioned first exhaust gas collecting pipe with above-mentioned tail gas return pipe, above-mentioned coolant liquid circulation pipe
Road, said engine oil circulating line pass through above-mentioned heat exchange department, and make above-mentioned connecting tube and above-mentioned coolant liquid circulating line and above-mentioned
Oil circulation pipeline contacts in above-mentioned heat exchange department.
It is constituted according to as described above, by making above-mentioned connecting tube and above-mentioned coolant liquid circulating line and said engine oil circulation pipe
Road contacts in above-mentioned heat exchange department, so as to make the tail gas of the high temperature flowed in connecting tube and follow respectively in above-mentioned coolant liquid
The coolant liquid and machine oil flowed in endless tube road and said engine oil circulating line carries out heat exchange, and thus, it is possible to realize as short as possible
Time in so that the temperature of engine system is risen to starting ideal temperature, and then each component of engine system can be greatly decreased
Between abrasion, protect engine system, improve the performance of engine system.
The engine system of second technical solution of first aspect present invention is the first technology in first aspect present invention
On the basis of the engine system of scheme, characterized in that above-mentioned first exhaust gas collecting pipe aspiration pump setting position with it is above-mentioned
First pressure sensor is provided between the diverging positions that second exhaust gas collecting pipe is diverged, above-mentioned first pressure sensor is used for
The pressure of the tail gas aspirated from above-mentioned tail gas discharging pipe is detected, position is set in the aspiration pump of above-mentioned second exhaust gas collecting pipe
It sets and is provided with second pressure sensor between the other end of above-mentioned second exhaust gas collecting pipe, above-mentioned second pressure sensor is used for
The pressure of the tail gas aspirated from above-mentioned offgas duct is detected.
It is constituted according to as described above, it can be according to the pressure detected by above-mentioned first pressure sensor and by above-mentioned second
The comparison result for the pressure that pressure sensor detects adjusts the unit of above-mentioned first aspiration pump and/or above-mentioned second aspiration pump
The amount of working time or unit intake-gas.
The engine system of the third technical solution of first aspect present invention is the first technology in first aspect present invention
On the basis of the engine system of scheme, characterized in that the midway of above-mentioned coolant liquid circulating line is provided with coolant temperature
Sensor, above-mentioned cooling-water temperature transmitter is for the temperature to the coolant liquid circulated in above-mentioned coolant liquid circulating line
It is detected, the midway of said engine oil circulating line is provided with oil temperature sensor, said engine oil temperature sensor is used for
The temperature of the machine oil circulated in said engine oil circulating line is detected.
The engine system of 4th technical solution of first aspect present invention is the first technology in first aspect present invention
On the basis of the engine system of scheme, characterized in that be located at above-mentioned auxiliary temperature elevation system in above-mentioned coolant liquid circulating line
The upstream side of above-mentioned heat exchange department and the pipeline in downstream side on be respectively arranged with open and close valve, by the way that above-mentioned heat exchange will be set to
The upstream side in portion and the above-mentioned open and close valve in downstream side open and close, and whether can enter above-mentioned heat exchange department to coolant liquid and carry out
Control.
It is constituted according to as described above, can only make the tail gas of high temperature after the temperature of coolant liquid reaches ideal start-up temperature
Machine oil is heated, heating efficiency is thus improved.
The engine system of 5th technical solution of first aspect present invention is the first technology in first aspect present invention
On the basis of the engine system of any technical solution of the scheme into the 4th technical solution, characterized in that above-mentioned coolant liquid is followed
Endless tube road and said engine oil circulating line are cylindrical, and above-mentioned connecting tube is cylindrical, and above-mentioned connecting tube is followed with above-mentioned coolant liquid
Endless tube road and said engine oil circulating line are contacted in above-mentioned heat exchange department middle line.
It is constituted according to as described above, the tail gas of the high temperature flowed in connecting tube can be made and followed respectively in above-mentioned coolant liquid
The coolant liquid and machine oil flowed in endless tube road and said engine oil circulating line carries out heat exchange.
The engine system of 6th technical solution of first aspect present invention is the first technology in first aspect present invention
On the basis of the engine system of any technical solution of the scheme into the 4th technical solution, characterized in that above-mentioned coolant liquid is followed
Endless tube road and said engine oil circulating line are in prism-shaped, and above-mentioned connecting tube is in prism-shaped, and above-mentioned connecting tube is followed with above-mentioned coolant liquid
Endless tube road and said engine oil the circulating line face contact in above-mentioned heat exchange department.
It is constituted according to as described above, in addition to the tail gas of the high temperature flowed in connecting tube can be made and respectively in above-mentioned cooling
The coolant liquid and machine oil flowed in liquid circulating line and said engine oil circulating line carries out heat exchange, moreover it is possible to because mutual face connects
Touching, and make the more efficient of heat exchange.
First technical solution of second aspect of the present invention provides a kind of hair of the first technical solution of first aspect present invention
The control method of motivation system, characterized in that respectively above-mentioned cold when the control method of the engine system includes: to starting
Whether the temperature of the coolant liquid and machine oil that but flow in liquid circulating line and said engine oil circulating line reaches starting ideal temperature
The starting initial temperature judgment step judged；Whether active temperature is reached to the catalyst being set in above-mentioned catalyst tank
The catalyst activity judgment step judged；And to after being heated using above-mentioned auxiliary temperature elevation system in above-mentioned cooling
Whether the coolant liquid and machine oil flowed in liquid circulating line and said engine oil circulating line, which reaches starting ideal temperature, is judged
Grease temperature judging step.
It is constituted according to as described above, the tail gas of the high temperature flowed in connecting tube can be made and recycled respectively in above-mentioned coolant liquid
The coolant liquid and machine oil flowed in pipeline and said engine oil circulating line carries out heat exchange, and thus, it is possible to realize as short as possible
So that the temperature of engine system is risen to starting ideal temperature in time, and then can be greatly decreased between each component of engine system
Abrasion, protect engine system, improve the performance of engine system.
The control method of the engine system of second technical solution of second aspect of the present invention is in second aspect of the present invention
The first technical solution engine system control method on the basis of, characterized in that above-mentioned starting initial temperature judge
In step, when the temperature of coolant liquid and machine oil upon start up meets or exceeds starting ideal temperature, above-mentioned first pumping is closed
Starting reason has not yet been reached in pump, above-mentioned second aspiration pump and above-mentioned third aspiration pump, the temperature of coolant liquid and machine oil upon start up
When thinking temperature, above-mentioned catalyst activity judgment step is carried out.
The control method of the engine system of the third technical solution of second aspect of the present invention is in second aspect of the present invention
The first technical solution engine system control method on the basis of, characterized in that above-mentioned catalyst activity judge walk
In rapid, when catalyst has reached active temperature, by above-mentioned first aspiration pump, above-mentioned second aspiration pump and above-mentioned third aspiration pump
It opens, at this point, the tail gas of high temperature is from the first position of above-mentioned offgas duct and above-mentioned tail gas discharging pipe respectively via above-mentioned first tail
Gas collecting pipe and above-mentioned second exhaust gas collecting pipe enter above-mentioned heat exchange department, and are back to above-mentioned tail via above-mentioned tail gas return line flow
Then the second position of tracheae carries out above-mentioned grease temperature judging step, when being judged as that active temperature has not yet been reached in catalyst,
Above-mentioned first aspiration pump and above-mentioned third aspiration pump are opened, and above-mentioned second aspiration pump is closed, at this point, the tail gas of high temperature is only
Enter above-mentioned heat exchange department from above-mentioned tail gas discharging pipe via above-mentioned first exhaust gas collecting pipe, and via above-mentioned tail gas return line flow
It is back to the second position of above-mentioned offgas duct, then carries out above-mentioned grease temperature judging step.
It is constituted according to as described above, when catalyst does not reach active temperature, the tail gas of high temperature is not only to machine oil and cold
But liquid is heated, and also carries out reheating to the catalyst that active temperature has not yet been reached in catalyst tank.
The control method of the engine system of 4th technical solution of second aspect of the present invention is in second aspect of the present invention
Third technical solution engine system control method on the basis of, characterized in that in above-mentioned coolant liquid circulating line
It is respectively arranged with open and close valve on the upstream side of above-mentioned heat exchange department of above-mentioned auxiliary temperature elevation system and the pipeline in downstream side,
In above-mentioned grease temperature judging step, when the temperature of coolant liquid and the temperature of machine oil, which are respectively less than, starts ideal temperature, keep or
The movement for opening above-mentioned first aspiration pump, above-mentioned second aspiration pump and above-mentioned third aspiration pump is carried out, when above-mentioned coolant liquid
Temperature and said engine oil temperature be all larger than starting ideal temperature when, carry out vehicle whether be in shutdown status vehicle shut down
Judgement, when the temperature of above-mentioned coolant liquid meets and exceeds starting ideal temperature, and the temperature of machine oil still not up to starts ideal temperature
When spending, above-mentioned open and close valve is closed, coolant liquid may not flow into the above-mentioned heat exchange department of above-mentioned auxiliary temperature elevation system at this time, connect
, keep or carry out the movement for opening above-mentioned first aspiration pump, above-mentioned second aspiration pump and above-mentioned third aspiration pump.
It is constituted according to as described above, can only make the tail gas of high temperature after the temperature of coolant liquid reaches ideal start-up temperature
Machine oil is heated, heating efficiency is thus improved.
The control method of the engine system of 6th technical solution of second aspect of the present invention is in second aspect of the present invention
Third technical solution or the 4th technical solution engine system control method on the basis of, characterized in that when above-mentioned
When one aspiration pump, above-mentioned second aspiration pump and above-mentioned third aspiration pump are opened, detected according to by above-mentioned first pressure sensor
The comparison result of pressure and the pressure detected by above-mentioned second pressure sensor out, adjust above-mentioned first aspiration pump and/or
The working unit time of above-mentioned second aspiration pump or the amount of unit intake-gas.
The control method of the engine system of 6th technical solution of second aspect of the present invention is in second aspect of the present invention
The 5th technical solution engine system control method on the basis of, characterized in that according to by be set to above-mentioned first tail gas
Pressure measured by the pressure sensor of collecting pipe and the river outlet of above-mentioned second exhaust gas collecting pipe, to adjust above-mentioned first pumping
Pump and the working unit time of above-mentioned second aspiration pump or the amount of unit intake-gas, to guarantee to enter above-mentioned heat after tail gas converges
The pressure of exchange part is constant.
Detailed description of the invention
Fig. 1 is the integrally-built schematic configuration diagram for schematically illustrating the engine system of embodiment of the present invention 1, is had
Assist temperature elevation system.
Fig. 2 is the schematic diagram for indicating to carry out machine oil and coolant liquid using auxiliary temperature elevation system shown in FIG. 1 heating heating.
Fig. 3 is the schematic diagram for indicating another embodiment of the heat exchange department in auxiliary temperature elevation system shown in FIG. 1.
Fig. 4 is the schematic diagram for indicating the another embodiment of the heat exchange department in auxiliary temperature elevation system shown in FIG. 1.
Fig. 5 is the flow chart being illustrated to the control method of the engine system of embodiment of the present invention 1.
Fig. 6 is the integrally-built schematic configuration diagram for schematically illustrating the engine system of embodiment of the present invention 2, is had
Temperature elevation system is assisted, and is respectively arranged with open and close valve on coolant liquid circulating line and oil circulation pipeline.
Fig. 7 is the flow chart being illustrated to the control method of the engine system of embodiment of the present invention 2.
Fig. 8 is a sub-process in the control method to the engine system of embodiment of the present invention 1 and embodiment 2
The flow chart being illustrated.
Specific embodiment
Hereinafter, the engine system of each embodiment of the present invention is described in detail referring to attached drawing.
(embodiment 1)
Firstly, referring to Fig.1, being illustrated to the overall structure of the engine system 100 of embodiment of the present invention 1.Wherein,
Fig. 1 is the integrally-built schematic configuration diagram for schematically illustrating the engine system 100 of embodiment of the present invention 1, has auxiliary
Temperature elevation system 200.
As shown in Figure 1, engine system 100 of the invention include air inlet 110, electronic throttle 140, 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 liquid circulating line P1 and oil circulation pipeline P2, coolant liquid (example
Such as water) it can be circulated in coolant liquid circulating line P1, machine oil can circulate in oil circulation pipeline P2.
In addition, being provided with cooling-water temperature transmitter TS1 in the midway of coolant liquid circulating line P1, which is passed
Sensor TS1 is for detecting the temperature of the coolant liquid circulated in coolant liquid circulating line P1.In oil circulation pipe
The midway of road P2 is provided with oil temperature sensor TS2, and oil temperature sensor TS2 is used for in oil circulation pipeline P2
The temperature of the machine oil circulated is detected.
Tail gas after burning in the internal combustion engine 150 of engine system 100 enters catalyst tank 170 via offgas duct 160,
After carrying out purified treatment to tail gas using the catalyst (not shown) being set in catalyst tank 170, via tail gas discharging pipe 180
It is discharged to outside vehicle.
Engine system 100 further includes auxiliary temperature elevation system 200, which is used for engine system
Start-up temperature when 100 starting carries out auxiliary heating.
Above-mentioned auxiliary temperature elevation system 200 includes the first exhaust gas collecting pipe 210, the second exhaust gas collecting pipe 220, tail gas return pipe
230, heat exchange department 240.
One end of first exhaust gas collecting pipe 210 is connected to the tail positioned at the exhaust gas flow direction downstream side of catalyst tank 170
The other end of the midway of gas delivery pipe 180, the first exhaust gas collecting pipe 210 is connect with one end of heat exchange department 240.
One end of second exhaust gas collecting pipe 220 is connected to the tail positioned at the exhaust gas flow direction upstream side of catalyst tank 170
At the first position of tracheae 160, the other end of the second exhaust gas collecting pipe 220 is connected in above-mentioned first exhaust gas collecting pipe 210
On the way.
One end of tail gas return pipe 230 is connect with the other end of heat exchange department 240, and the other end of tail gas return pipe 230 connects
It is connected to the second place of the offgas duct 160 positioned at the exhaust gas flow direction upstream side of catalyst tank 170, and offgas duct 160
Said second position be located between the above-mentioned first position and catalyst tank 170 of offgas duct 160.
In addition, check valve 161 is provided between the above-mentioned first position of offgas duct 160 and said second position, the list
To valve 161 allow tail gas from the upstream side in exhaust gas flow direction to the downstream side in exhaust gas flow direction flow (by taking Fig. 1 as an example, from
Flow to the right in left side), without allowing tail gas to flow from the downstream side in exhaust gas flow direction to the upstream side in exhaust gas flow direction.
The midway of first exhaust gas collecting pipe 210 is provided with the first aspiration pump 211, which is used for from tail
Gas delivery pipe 180 aspirates tail gas.In addition, in the aspiration pump setting position of the first exhaust gas collecting pipe 210 and the second exhaust gas collecting pipe
It is provided with first pressure sensor 212 between 220 diverging positions to be diverged, which is used for from tail
The pressure for the tail gas that gas delivery pipe 180 aspirates is detected.
The one end by offgas duct 160 of second exhaust gas collecting pipe 220 is provided with the second aspiration pump 221, second pumping
Air pump 221 is used to aspirate tail gas from offgas duct 160 (first position).In addition, the aspiration pump in the second exhaust gas collecting pipe 220 is set
It is provided with second pressure sensor 222 between seated position and the other end of the second exhaust gas collecting pipe 220, the second pressure sensor
222 for detecting the pressure of the tail gas aspirated from offgas duct 160.
The midway of tail gas return pipe 230 is provided with third aspiration pump 231, which is used for from heat exchange
Intake-gas in portion 240, and by its force feed to offgas duct 160 (second position).
In above-mentioned heat exchange department 240, there is the connection for connecting the first exhaust gas collecting pipe 210 with tail gas return pipe 230
Pipe 250 (referring to Fig. 2).In the explanation of present embodiment 1, the first exhaust gas collecting pipe 210, tail gas return pipe 230 and connecting tube
250 be interconnected different pipelines, but the present invention is not limited to this, also may be constructed the pipeline of an one.In addition, above-mentioned
Coolant liquid circulating line P1 and oil circulation pipeline P2 equally also passes through heat exchange department 240.
Then, referring to Figure 2 to Figure 4, the internal structure of heat exchange department 240 is described in detail.Wherein, Fig. 2 is to indicate
The schematic diagram of heating heating is carried out to machine oil and coolant liquid using auxiliary temperature elevation system 200 shown in FIG. 1.Fig. 3 is to indicate Fig. 1 institute
The schematic diagram of another embodiment of the heat exchange department 240 in auxiliary temperature elevation system 200 shown.Fig. 4 is to indicate auxiliary shown in FIG. 1
The schematic diagram of the another embodiment of heat exchange department 240 in temperature elevation system.
In an embodiment shown in Fig. 2, in the inside of heat exchanger 240 there is coolant liquid circulating line P1, machine oil to follow
Endless tube road P2, the connecting tube 250 for connecting the first exhaust gas collecting pipe 210 and tail gas return pipe 230 and setting are in coolant liquid
Thermally conductive sheet 241 between circulating line P1, oil circulation pipeline P2 and connecting tube 250.
The tail gas of high temperature flows into tail gas return pipe 230 via connecting tube 250 from the first exhaust gas collecting pipe 210, and is flowing
During crossing connecting tube 250, the tail gas of high temperature with flowed in coolant liquid circulating line P1 and oil circulation pipeline P2 respectively
Coolant liquid and machine oil occur heat exchange, to be heated to coolant liquid and machine oil.
In an alternative embodiment as shown in figure 3, coolant liquid circulating line P1 and oil circulation pipeline P2 are for example cylindrical,
And connecting tube 250 is also for example cylindrical, and meets connecting tube 250 and coolant liquid circulating line P1 and oil circulation pipeline P2
Touching, at this point, being contacted between connecting tube 250 and coolant liquid circulating line P1 and oil circulation pipeline P2 for line.
In another embodiment shown in Fig. 4, coolant liquid circulating line P1 and oil circulation pipeline P2 for example in prism-shaped,
And connecting tube 250 is also for example in prism-shaped, and meets connecting tube 250 and coolant liquid circulating line P1 and oil circulation pipeline P2
Touching, at this point, being face contact between connecting tube 250 and coolant liquid circulating line P1 and oil circulation pipeline P2.
Hereinafter, being illustrated referring to Fig. 5 to the control method of the engine system 100 of embodiment of the present invention 1.Wherein,
Fig. 5 is the flow chart being illustrated to the control method of the engine system 100 of embodiment of the present invention 1.
As shown in figure 5, at vehicle launch (step S100), first with temperature sensor (cooling-water temperature transmitter
TS1 and oil temperature sensor TS2), it detects and acquires and flowed in coolant liquid circulating line P1 and oil circulation pipeline P2 respectively
The temperature (step S200) of dynamic coolant liquid and machine oil.
Then, (step S300) is judged to start-up temperature.
When start-up temperature (i.e. the temperature T2 of the temperature T1 and machine oil of coolant liquid) is more than or equal to starting ideal temperature (such as 90
DEG C) when, i.e., when being judged as " >=90 DEG C " in step S300, the first aspiration pump 211, the second aspiration pump 221 and third are evacuated
Pump 231 is turned off (step S310).
When start-up temperature (i.e. the temperature of the temperature of coolant liquid and machine oil) is less than starting ideal temperature (such as 90 DEG C), i.e.,
When being judged as " 90 DEG C of < " in step S300, (step S400) is judged to catalyst activity.
When being judged as that catalyst has reached active temperature (such as 350 DEG C), i.e., when being judged as "Yes" in step S400,
First aspiration pump 211, the second aspiration pump 221 and third aspiration pump 231 are opened into (step S410), at this point, the tail gas of high temperature
From offgas duct 160 (first position) and tail gas discharging pipe 180 respectively via the first exhaust gas collecting pipe 210 and the second exhaust collection
Pipe 220 enters heat exchange department 240, and flows back into offgas duct 160 (second position) via tail gas return pipe 230.Then it carries out
Grease temperature judges (step S500).
Conversely, being judged as when in step S400 when being judged as that active temperature (such as 350 DEG C) have not yet been reached in catalyst
When "No", the first aspiration pump 211 and third aspiration pump 231 are opened, and the second aspiration pump 221 is closed into (step S420), this
When, the tail gas of high temperature only enters heat exchange department 240 from tail gas discharging pipe 180 via the first exhaust gas collecting pipe 210, and via tail gas
Return pipe 230 flows back into offgas duct 160 (second position), and the tail gas of high temperature not only heats machine oil and coolant liquid, also
Reheating is carried out to the catalyst that active temperature has not yet been reached in catalyst tank 170.Then grease temperature judgement (step is carried out
S500)。
In grease temperature judgement (step S500), whether the temperature T2 of temperature T1 and machine oil to coolant liquid reach starting reason
Think that temperature (such as 90 DEG C) is judged.
Since the rate of rise in temperature of coolant liquid is faster than the rate of rise in temperature of machine oil, the theoretically temperature of coolant liquid
Spend the temperature T2 that T1 is greater than machine oil.Here, being only illustrated to the case where common T1 > T2, and omit to the T2 seldom occurred
The explanation of > T1.
Start ideal temperature (such as 90 DEG C), i.e. when in step when the temperature T1 of coolant liquid and the temperature T2 of machine oil are respectively less than
When being judged as " 90 DEG C of T2 < T1 < " in S500, return step S410 is kept the first aspiration pump 211,221 and of the second aspiration pump
The state that third aspiration pump 231 is opened.Then the judgement of grease temperature (step S500) is carried out again.
When the temperature T2 of the temperature T1 of coolant liquid and machine oil are all larger than starting ideal temperature (such as 90 DEG C), i.e. when in step
When being judged as " T1 and T2 >=90 DEG C " in rapid S500, the vehicle shutdown judgement (step whether vehicle is in shutdown status is carried out
S600)。
If ECU does not receive halt instruction (being judged as "No" in step S600), return step S200, detection is simultaneously
Acquire the temperature of the coolant liquid and machine oil that flow in coolant liquid circulating line P1 and oil circulation pipeline P2 respectively.Conversely, such as
When fruit ECU receives halt instruction (being judged as "Yes" in step S600), terminate whole flow process (step S700).
(embodiment 2)
Hereinafter, being illustrated referring to Fig. 6 to the overall structure of the engine system 100 ' of embodiment of the present invention 2.Its
In, Fig. 6 is the integrally-built schematic configuration diagram for schematically illustrating the engine system 100 ' of embodiment of the present invention 2, is had
Temperature elevation system 200 is assisted, and is provided with open and close valve V1 and V2 on coolant liquid circulating line P1.
In addition, marking identical appended drawing reference for constituent element same as embodiment 1, and omit it specifically
It is bright.Here, being only illustrated to the part different from embodiment 1.
Present embodiment 2 and embodiment 1 the difference is that, be located at above-mentioned auxiliary in coolant liquid circulating line P1
Open and close valve V1 and V2 are respectively arranged on the upstream side of heat exchange department 240 of temperature elevation system 200 and the pipeline in downstream side.Passing through will
The upstream side for being set to above-mentioned heat exchange department 240 and downstream side open and close valve V1 and V2 open and close, can be to coolant liquid
Whether enter heat exchange department 240 to be controlled.
Then, referring to Fig. 7, the control method of the engine system 100 ' of embodiment of the present invention 2 is illustrated.Its
In, Fig. 7 is the flow chart being illustrated to the control method of the engine system 100 ' of embodiment of the present invention 2.
And above similarly, for the step identical as the control method of engine system 100 of embodiment 1, mark
Identical label, and description is omitted.Here, being only illustrated to the part different from embodiment 1.
Present embodiment 2 and embodiment 1 the difference is that, grease temperature judges the judgment method of (step S500 ')
It is different.
More specifically, in the grease temperature judgement (step S500 ') of the control method of embodiment 2, with embodiment 1
Similarly, judge whether the temperature T2 of the temperature T1 of coolant liquid and machine oil reach starting ideal temperature (such as 90 DEG C).
In addition, similarly, being only illustrated to the case where common T1 > T2, and omit to the T2 > T1's seldom occurred
Explanation.
Start ideal temperature (such as 90 DEG C), i.e. when in step when the temperature T1 of coolant liquid and the temperature T2 of machine oil are respectively less than
When being judged as " 90 DEG C of T2 < T1 < " in S500 ', in the same manner as embodiment 1, return step S410 keeps or carries out first
The movement that aspiration pump 211, the second aspiration pump 221 and third aspiration pump 231 are opened.Then grease temperature judgement (step is carried out again
Rapid S500 ').
Since the rate of rise in temperature of coolant liquid is faster than the rate of rise in temperature of machine oil, accordingly, there exist the temperature of coolant liquid
The case where T1 meets and exceeds starting ideal temperature, and the temperature T2 of machine oil still not up to starts ideal temperature.
In the embodiment 1, continue to heat coolant liquid and machine oil, until the temperature T1 of coolant liquid and the temperature of machine oil
Degree T2 meets and exceeds starting ideal temperature.And in present embodiment 2, when the temperature of coolant liquid meets and exceeds starting reason
Think temperature (such as 90 DEG C), and in the case that the temperature T2 of machine oil still not up to starts ideal temperature (such as 90 DEG C), i.e., in step
When being judged as " 90 DEG C of T1 >=90 DEG C and T2 < " in rapid S500, open and close valve V1 and V2 are closed, at this time coolant liquid may not flow into
The heat exchange department 240 (step S510) of temperature elevation system 200 is assisted, then, return step S410 is kept the first pumping or carried out
The movement that the 211, second aspiration pump 221 of pump and third aspiration pump 231 are opened.Then grease temperature judgement (step is carried out again
S500’)。
When the temperature T2 of the temperature T1 of coolant liquid and machine oil are all larger than starting ideal temperature (such as 90 DEG C), i.e. when in step
When being judged as " T1 and T2 >=90 DEG C " in rapid S500 ', the vehicle shutdown judgement (step whether vehicle is in shutdown status is carried out
S600)。
Remaining step is identical as embodiment 1.
Then, referring to Fig. 8, to the step in the control method of the engine system of embodiment of the present invention 1 and embodiment 2
Rapid S410 is illustrated.Fig. 8 is the step in the control method to the engine system of embodiment of the present invention 1 and embodiment 2
The flow chart that rapid S410 is illustrated.
In above embodiment 1 and embodiment 2, what step 410 carried out is to maintain the first aspiration pump or carries out
211, the movement that the second aspiration pump 221 and third aspiration pump 231 are opened.But in varied situations, first in step S410
The working unit time (or amount of unit intake-gas) of aspiration pump 211 and the second aspiration pump 221 is different.
More specifically, in step S410, comprising: first pressure sensor 212 and second pressure sensor 222 are utilized,
The step of detecting and acquiring the pressure of the tail gas aspirated from tail gas discharging pipe 180 and at offgas duct 160 (first position) (step
Rapid S411)；To the pressure A detected by first pressure sensor 212 and the pressure B detected by second pressure sensor 222
The step of being compared (step S412).
It is greater than the pressure detected by second pressure sensor 222 in the pressure A detected by first pressure sensor 212
When B, the second aspiration pump 221 shortens working unit time (or amount of unit intake-gas) (step S413), on the contrary, by first
When the pressure A that pressure sensor 212 detects is less than the pressure B detected by second pressure sensor 222, the first aspiration pump
211 shorten working unit time (or amount of unit intake-gas) (step S414).In addition, if by first pressure sensor
The 212 pressure A detected are equal to the pressure B detected by second pressure sensor 222, keep the first aspiration pump 211 and second
The current state (step S415) of aspiration pump 221.
In addition, can be passed according to the pressure of the river outlet by being set to the first exhaust gas collecting pipe 210 and the second exhaust gas collecting pipe 220
Pressure measured by sensor (not shown), to adjust the working unit time of the first aspiration pump 211 and the second aspiration pump 221, with
Guarantee that the pressure for entering heat exchange department 240 after tail gas converges is constant.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that specific implementation of the invention is not by above-mentioned reality
Apply the limitation of mode.Those skilled in the art will be readily apparent other advantage and modification.Therefore, in its wider range of side
For on face, the present invention is not limited to detail and representative embodiment shown and described herein.It therefore, can be not
It is made under the premise of the spirit or scope for being detached from this general inventive concept as defined by the appended claims and its equivalent
Various modifications.
In the above-described embodiment, it is illustrated by taking the engine system of naturally aspirated as an example, but the present invention not office
It is limited to this, is readily applicable in 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
Delivery pipe (180) can make coolant liquid in the coolant liquid circulating line (P1) wherein circulated and machine oil can be made to follow wherein
The dynamic oil circulation pipeline (P2) of circulation, the tail in the internal combustion engine (150) of the engine system (100,100 ') after burning
Gas enters the catalyst tank (170) via the offgas duct (160), is then discharged to via the tail gas discharging pipe (180)
Outside vehicle, which is characterized in that
The engine system (100,100 ') further includes auxiliary temperature elevation system (200), and the auxiliary temperature elevation system (200) is used for
Start-up temperature when to the engine system (100,100 ') starting carries out auxiliary heating,
The auxiliary temperature elevation system (200) includes the first exhaust gas collecting pipe (210), the second exhaust gas collecting pipe (220), tail gas reflux
Manage (230), heat exchange department (240), in which:
One end of first exhaust gas collecting pipe (210) is connected under the exhaust gas flow direction of the catalyst tank (170)
Swim the midway of the tail gas discharging pipe (180) of side, the other end and the heat exchange department of first exhaust gas collecting pipe (210)
(240) one end connection,
One end of second exhaust gas collecting pipe (220) is connected on the exhaust gas flow direction of the catalyst tank (170)
At the first position for swimming the offgas duct (160) of side, the other end of second exhaust gas collecting pipe (220) is connected to described the
The midway of one exhaust gas collecting pipe (210),
One end of the tail gas return pipe (230) is connect with the other end of the heat exchange department (240), the tail gas return pipe
(230) the other end is connected to the offgas duct (160) positioned at the exhaust gas flow direction upstream side of the catalyst tank (170)
The second place,
The second position of the offgas duct (160) be located at the offgas duct (160) the first position and the catalysis
Between agent tank (170),
Check valve (161), the list are provided between the first position and the second position of the offgas duct (160)
Tail gas is allowed to flow from the upstream side in exhaust gas flow direction to the downstream side in exhaust gas flow direction to valve (161),
It is provided in the midway of first exhaust gas collecting pipe (210) for aspirating tail gas from the tail gas discharging pipe (180)
First aspiration pump (211),
It is provided in the one end by the offgas duct (160) of second exhaust gas collecting pipe (220) for from the tail gas
The second aspiration pump (221) of the first position suction tail gas of (160) is managed,
The midway of the tail gas return pipe (230) be provided with for the intake-gas from the heat exchange department (240) and by its
Force feed to the second position of the offgas duct (160) third aspiration pump (231),
In the heat exchange department (240), have first exhaust gas collecting pipe (210) and the tail gas return pipe (230)
The connecting tube (250) of connection,
The coolant liquid circulating line (P1), the oil circulation pipeline (P2) pass through the heat exchange department (240), and make described
Connecting tube (250) and the coolant liquid circulating line (P1) and the oil circulation pipeline (P2) are in the heat exchange department (240)
Middle contact.
2. engine system (100,100 ') as described in claim 1, which is characterized in that
It is diverged in the aspiration pump setting position of first exhaust gas collecting pipe (210) with second exhaust gas collecting pipe (220)
Diverging positions between be provided with first pressure sensor (212), the first pressure sensor (212) is used for from the tail
The pressure of the tail gas of gas delivery pipe (180) suction is detected,
Second exhaust gas collecting pipe (220) aspiration pump setting position and second exhaust gas collecting pipe (220) it is another
It is provided between end second pressure sensor (222), the second pressure sensor (222) is used for from the offgas duct
(160) pressure of the tail gas aspirated is detected.
3. engine system (100,100 ') as described in claim 1, which is characterized in that
The midway of the coolant liquid circulating line (P1) is provided with cooling-water temperature transmitter (TS1), the coolant temperature
Sensor (TS1) is used to detect the temperature of the coolant liquid circulated in the coolant liquid circulating line (P1),
The midway of the oil circulation pipeline (P2) is provided with oil temperature sensor (TS2), the oil temperature sensor
(TS2) for being detected to the temperature of the machine oil circulated in the oil circulation pipeline (P2).
4. engine system (100 ') as described in claim 1, which is characterized in that
In the heat exchange department (240) for being located at auxiliary temperature elevation system (200) of the coolant liquid circulating line (P1)
Open and close valve (V1, V2) is respectively arranged on the pipeline in upstream side and downstream side,
On and off is beaten by the open and close valve (V1, V2) of the upstream side and downstream side that will be set to the heat exchange department (240)
It closes, the heat exchange department (240) whether can be entered to coolant liquid and is controlled.
5. engine system (100,100 ') according to any one of claims 1 to 4, which is characterized in that
The coolant liquid circulating line (P1) and the oil circulation pipeline (P2) are cylindrical,
The connecting tube (250) is cylindrical,
The connecting tube (250) and the coolant liquid circulating line (P1) and the oil circulation pipeline (P2) are in the heat exchange
The contact of portion's (240) middle line.
6. engine system (100,100 ') according to any one of claims 1 to 4, which is characterized in that
The coolant liquid circulating line (P1) and the oil circulation pipeline (P2) are in prism-shaped,
The connecting tube (250) is in prism-shaped,
The connecting tube (250) and the coolant liquid circulating line (P1) and the oil circulation pipeline (P2) are in the heat exchange
Face contact in portion (240).
7. a kind of control method of engine system as described in claim 1 (100,100 '), which is characterized in that described to start
The control method of machine system includes:
The coolant liquid flowed in the coolant liquid circulating line (P1) and the oil circulation pipeline (P2) respectively when to starting
Whether reach the starting initial temperature judgment step that starting ideal temperature is judged with the temperature of machine oil；
Sentence to whether the catalyst being set in the catalyst tank (170) reaches the catalyst activity that active temperature is judged
Disconnected step；And
To using it is described auxiliary temperature elevation system (200) heat after in the coolant liquid circulating line (P1) and the machine oil
Whether the coolant liquid and machine oil flowed in circulating line (P2) reaches the grease temperature judgement step that starting ideal temperature is judged
Suddenly.
8. the control method of engine system (100,100 ') as claimed in claim 7, which is characterized in that
In the starting initial temperature judgment step,
When the temperature of coolant liquid and machine oil upon start up meets or exceeds starting ideal temperature, first aspiration pump is closed
(211), second aspiration pump (221) and the third aspiration pump (231),
When starting ideal temperature has not yet been reached in the temperature of coolant liquid and machine oil upon start up, the catalyst activity judgement is carried out
Step.
9. the control method of engine system (100,100 ') as claimed in claim 7, which is characterized in that
In the catalyst activity judgment step,
When catalyst has reached active temperature, by first aspiration pump (211), second aspiration pump (221) and described
Third aspiration pump (231) is opened, at this point, first position and the exhaust emissions of the tail gas of high temperature from the offgas duct (160)
It manages (180) and enters the heat exchange via first exhaust gas collecting pipe (210) and second exhaust gas collecting pipe (220) respectively
Portion (240), and flow back into via the tail gas return pipe (230) second position of the offgas duct (160), then carry out described in
Grease temperature judging step,
When being judged as that active temperature has not yet been reached in catalyst, by first aspiration pump (211) and the third aspiration pump
(231) it opens, and second aspiration pump (221) is closed, at this point, the tail gas of high temperature is only from the tail gas discharging pipe (180)
Enter the heat exchange department (240) via first exhaust gas collecting pipe (210), and is flowed via the tail gas return pipe (230)
It is back to the second position of the offgas duct (160), then carries out the grease temperature judging step.
10. the control method of engine system (100 ') as claimed in claim 9, which is characterized in that
In the heat exchange department (240) for being located at auxiliary temperature elevation system (200) of the coolant liquid circulating line (P1)
Open and close valve (V1, V2) is respectively arranged on the pipeline in upstream side and downstream side,
In the grease temperature judging step,
When the temperature (T1) of coolant liquid and the temperature (T2) of machine oil, which are respectively less than, starts ideal temperature, keep described the or carry out
The movement that one aspiration pump (211), second aspiration pump (221) and the third aspiration pump (231) are opened,
When the temperature (T2) of the temperature (T1) of the coolant liquid and the machine oil is all larger than starting ideal temperature, carrying out vehicle is
The no vehicle in shutdown status shuts down judgement,
When the temperature (T1) of the coolant liquid meets and exceeds starting ideal temperature, and the temperature (T2) of machine oil still not up to starts
When ideal temperature, the open and close valve (V1, V2) is closed, coolant liquid may not flow into the auxiliary temperature elevation system (200) at this time
The heat exchange department (240) then keep first aspiration pump (211), second aspiration pump (221) or carry out
The movement opened with the third aspiration pump (231).
11. the control method of the engine system (100,100 ') as described in claim 9 or 10, which is characterized in that
When first aspiration pump (211), second aspiration pump (221) and the third aspiration pump (231) are opened, root
According to the aspiration pump by being set to first exhaust gas collecting pipe (210), position and the second exhaust gas collecting pipe (220) institute are set
Pressure (A) that first pressure sensor (212) between the diverging positions of fork detects and by being set to second tail gas
Second pressure between the aspiration pump setting position of collecting pipe (220) and the other end of second exhaust gas collecting pipe (220) passes
The comparison result for the pressure (B) that sensor (222) detects adjusts first aspiration pump (211) and/or second aspiration pump
(221) amount of working unit time or unit intake-gas.
12. the control method of engine system (100,100 ') as claimed in claim 11, which is characterized in that
According to the pressure of the river outlet by being set to first exhaust gas collecting pipe (210) and second exhaust gas collecting pipe (220)
Pressure measured by sensor, when working unit to adjust first aspiration pump (211) and second aspiration pump (221)
Between or unit intake-gas amount, with guarantee tail gas confluence after enter the heat exchange department (240) pressure it 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 true CN106555631B (en) | 2019-02-05 |
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| CN201510631724.0A Expired - Fee Related CN106555631B (en) | 2015-09-29 | 2015-09-29 | Engine system and its control method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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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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|---|---|---|---|---|
| GB1325526A (en) * | 1970-04-29 | 1973-08-01 | Saviem | Cooling systems of supercharged diesel engines |
| DE19737818A1 (en) * | 1996-08-30 | 1998-03-05 | Denso Corp | Cooling water circulation circuit for vehicle IC engine |
| 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 |
| 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 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006044820B4 (en) * | 2006-09-20 | 2019-03-07 | MAN Truck & Bus Österreich AG | Cooling system of an internal combustion engine with charge air supply |
-
2015
- 2015-09-29 CN CN201510631724.0A patent/CN106555631B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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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