CN102356220A - Engine cooling device - Google Patents
Engine cooling device Download PDFInfo
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- CN102356220A CN102356220A CN2009801581184A CN200980158118A CN102356220A CN 102356220 A CN102356220 A CN 102356220A CN 2009801581184 A CN2009801581184 A CN 2009801581184A CN 200980158118 A CN200980158118 A CN 200980158118A CN 102356220 A CN102356220 A CN 102356220A
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- Prior art keywords
- cooling water
- cooling
- water
- refrigeration agent
- circulation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/04—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids
- F01N3/043—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust using liquids without contact between liquid and exhaust gases
- F01N3/046—Exhaust manifolds with cooling jacket
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/08—Cabin heater
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P2060/00—Cooling circuits using auxiliaries
- F01P2060/16—Outlet manifold
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P7/00—Controlling of coolant flow
- F01P7/14—Controlling of coolant flow the coolant being liquid
- F01P7/16—Controlling of coolant flow the coolant being liquid by thermostatic control
- F01P7/165—Controlling of coolant flow the coolant being liquid by thermostatic control characterised by systems with two or more loops
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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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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
An engine cooling device (100) is provided with a water pump (10) for pumping cooling water (W) used in common in cooling water circulation passages (81-86), an engine (20) equipped with an engine body (21), a water-cooled exhaust manifold (30) having a smaller heat capacity than the engine body (21) and cooling an exhaust system of the engine (20) by the flowing cooling water (W), a radiator (50) for cooling the flowing cooling water (W), and an ECU (1) and a thermostat (60) which control flow of the cooling water (W) by determining, based on a predetermined judgment value, whether or not the cooling water (W) is to be caused to flow to the fifth and sixth cooling water circulation passages (85, 86), in which a radiator (50) is mounted, among the cooling water circulation passages (81-86). The predetermined judgment value is a value relating to the amount of heat which the cooling water (W) receives in the water-cooled exhaust manifold (30) from exhaust gas.
Description
Technical field
The present invention relates to the cooling equipment of motor, relate in particular to and comprise through coming the cooling equipment of motor of exhaust systems cool device of the vent systems of cooled engine with the common refrigeration agent of the refrigeration agent that in engine main body, circulates.
Background technique
In the past, known have a technology of coming the vent systems (particularly, for example gas exhaust manifold) of cooled engine through refrigeration agents such as water.About correlation technique, the technology of thinking related to the present invention is for example disclosed in patent documentation 1.The gas exhaust manifold equipment that comprises the water jacket that is formed on around the gas exhaust manifold and be the water spray projector system of spray form water-spraying to this water jacket is disclosed in patent documentation 1.In addition, comprise and to change the cooling control apparatus of cooling medium respectively as thinking technology related to the present invention, for example in patent documentation 2, disclosing to the internal-combustion engine of the flow control valve of the ratio of a plurality of cooling parts supplies.Particularly, the cooling control apparatus that on each cooling water path of cooling water being guided into a plurality of cooling parts such as exhaust port, is provided with the internal-combustion engine of flow control valve is disclosed in patent documentation 2.
Patent documentation 1: the Japanese documentation spy opens clear 63-208607 communique;
Patent documentation 2: the Japanese documentation spy opens the 2007-132313 communique.
Summary of the invention
The problem that invention will solve
But, in motor, be asked to reduce exhaust pollution with the response environment problem.About this point, during exhaust pollution when the running of main reduction middle-low load, have three-way catalyst is configured near the motor method with the three-way catalyst of promptly heating.
On the other hand, near running engine theoretical air fuel ratio or chemically correct fuel is hoped in the exhaust pollution discharging during for reduction high loaded process under utilizing the state of said method.But, in the case and since near engine configurations catalyzer, thereby catalyzer can be overheated, its result, catalyzer is deterioration excessively, and maybe since excessively deterioration cause the exhaust pollution deterioration.Thus, if consider the reduction of the exhaust pollution in high loaded process zone, then need dispose three-way catalyst away from motor.But,, therefore need increase the amount of the precious metal that promotes that catalyzer purifies because the reduction of the exhaust pollution in the middle-low load operation range of the catalyzer of promptly heating so far is abundant inadequately.Yet these precious metals are very rare, therefore possibly increase cost in the case.
With respect to this; Based on above-mentioned situation; The further reduction of the exhaust pollution during for exhaust pollution in the middle-low load operation range that can take into account the catalyzer of promptly heating better and high loaded process can consider to use the refrigerant cools vent systems to reduce delivery temperature.Also can suppress catalyst overheating thus.Therefore,, can dispose catalyzer near motor through so, thus the further reduction of the exhaust pollution can also take into account exhaust pollution and the high loaded process in the middle-low load operation range of the catalyzer of promptly heating better the time.
On the other hand, when the refrigerant cools vent systems, use that to be considered to waiting aspect the cost with the common refrigeration agent of the refrigeration agent that in engine main body, the circulates long-acting freezing mixture of the cooling water of motor (for example, as) be rational.About this point, the refrigeration agent in engine main body, flowing uses cooler (for example, radiator) to cool off usually.In addition, confirm about the temperature that whether refrigeration agent is circulated, be based on usually the refrigeration agent that circulates in the refrigerant cycle path that comprises engine main body to cooler.
But there are partial deviations in the temperature of the refrigeration agent that in the refrigerant cycle path, circulates.Therefore, refrigeration agent is circulated to cooler, more specifically usually be in which kind of degree and confirm according to the temperature of the outlet side part of engine main body or the temperature that just flow through the refrigeration agent in the circulation path of engine main body.In addition, through so confirming, can prevent or suppress to bring infringement to motor by refrigerant superheat etc.
But; Comprise through with situation at the exhaust systems cool device of the common refrigerant cools vent systems of the refrigeration agent of engine main body circulation under; Usually since the exhaust systems cool device size less than engine main body, so the thermal capacity of exhaust systems cool device is less than engine main body.Therefore, under the situation that comprises this exhaust systems cool device, comprise the refrigeration agent of circulation, the exhaust systems cool device is heated the effect transmitted greater than the suffered effect of engine main body.Thereby in the case; If determine whether to make refrigeration agent to circulate to cooler as above-mentioned; So make refrigeration agent reality before cooler circulation in the little exhaust systems cool device of thermal capacity refrigeration agent possibly surpass proper temperature; Thereby situation overheated or boiling possibly take place, and there is the problem of damaging motor in its result.
Therefore; The present invention makes in view of the above problems; Its purpose is to provide a kind of cooling equipment of motor; It is comprising through coming under the situation of exhaust systems cool device of vent systems of cooled engine with the common refrigeration agent of the refrigeration agent that in engine main body, circulates, thereby can prevent or be suppressed at refrigerant superheat or boiling infringement motor in the exhaust systems cool device.
The means that are used to deal with problems
The cooling equipment of the motor of the present invention that is used to deal with problems comprises: refrigeration agent force feed equipment, and said refrigeration agent force feed equipment is to the common refrigeration agent of a plurality of refrigerant cycle path force feed; Motor, the engine main body of said motor are included at least one the refrigerant cycle path in said a plurality of refrigerant cycle path; The exhaust systems cool device; Said exhaust systems cool device is included at least one the refrigerant cycle path in said a plurality of refrigerant cycle path; The thermal capacity of the said engine main body of ratio of heat capacities of said exhaust systems cool device is little, and said exhaust systems cool device uses the refrigeration agent of circulation to cool off said engine's exhaust system; Cooler, said cooler are included at least one the refrigerant cycle path in said a plurality of refrigerant cycle path, and the refrigeration agent of circulation is cooled off; And the circulation control apparatus, said circulation control apparatus determines whether to make refrigeration agent in said a plurality of refrigerant cycle path, to comprise at least one refrigerant cycle path circulation of said cooler based on predetermined decision content, and the circulation of control refrigeration agent; Wherein, said predetermined decision content be set to refrigeration agent in said exhaust systems cool device from the relevant decision content of the suffered received heat of exhaust.
In addition; The present invention preferably also comprises flow regulator; Said flow regulator is included at least one the refrigerant cycle path that comprises said exhaust systems cool device in said a plurality of refrigerant cycle path; And regulate from the flow of the refrigeration agent of said exhaust systems cool device discharge, so that the pressure of the refrigeration agent that in said exhaust systems cool device, circulates is higher than the system pressure in said a plurality of refrigerant cycle path.
The invention effect
According to the present invention; Come at the refrigeration agent common under the situation of exhaust systems cool device of vent systems of cooled engine, thereby can prevent or be suppressed at refrigerant superheat or boiling infringement motor in the exhaust systems cool device through the refrigeration agent that comprises Yu in engine main body, circulate.
Description of drawings
Fig. 1 be the motor that relates to of schematically illustrated embodiment cooling equipment (below; Abbreviate cooling equipment as) 100 figure; In Fig. 1; Pipeline of the cooling water circulating path between cold period when dotting formation and closing valve etc. as duct thermostat 60; Represent to constitute pipeline of the cooling water circulating path during warm when driving valve etc. with solid line, and this is shown the circulating direction of cooling water W with arrow as duct thermostat 60.In addition, among Fig. 3 to Fig. 8 too;
Fig. 2 is the figure of schematically illustrated water cooled exhaust manifold (below, abbreviate the water-cooled manifold as) 30;
Fig. 3 is the figure that the 1st cooling water circulating path 81 is shown;
Fig. 4 is the figure that the 2nd cooling water circulating path 82 is shown;
Fig. 5 is the figure that the 3rd cooling water circulating path 83 is shown;
Fig. 6 is the figure that the 4th cooling water circulating path 84 is shown;
Fig. 7 is the figure that the 5th cooling water circulating path 85 is shown;
Fig. 8 is the figure that the 6th cooling water circulating path 86 is shown;
Fig. 9 is the figure of the concrete formation of schematically illustrated ECU 1;
Figure 10 is the figure that the situation of coolant water temperature THW rising is shown with the variation of rotational speed N E and speed of a motor vehicle SPD in the lump; In Figure 10; Coolant water temperature THW representes with solid line under the situation of cooling equipment 100; Under the situation of cooling equipment 100X, dot, wherein cooling equipment 100X is identical with cooling equipment 100 in fact except that not having water-cooled manifold 30;
Figure 11 illustrates the flow that correspondingly is illustrated in the cooling water W of circulation in the water-cooled manifold 30 with the open and-shut mode of duct thermostat 60;
Figure 12 is the figure that the action of ECU 1 is shown with flow chart;
Figure 13 is the figure that positive opening duct thermostat 60 schematically is described;
Figure 14 be with during warm in water-cooled manifold 30 flow of the cooling water W of circulation under the situation of cooling equipment 100, represent with solid line; The figure that under the situation of cooling equipment 100Y, dots, wherein cooling equipment 100Y is identical with cooling equipment 100 in fact except that not having aperture 70;
Figure 15 is the figure of situation of variation of inlet pressure P1 and the outlet pressure P2 of the water-cooled manifold 30 of the variation with speed of a motor vehicle SPD, water temperature T HW and rotational speed N E when in the lump high temperature test being shown.
Embodiment
Below, in conjunction with accompanying drawing the preferred implementation that is used for embodiment of the present invention is elaborated.
Use Fig. 1 to Fig. 9 that cooling equipment 100 is described.Cooling equipment 100 comprises: ECU (Electronic Control Unit, electric control device) 1, water pump 10, motor 20, water-cooled manifold 30, heater core 40, radiator 50, duct thermostat 60 and aperture 70.Water pump 10 is assembled on the motor 20.Water pump 10 is mechanical pumps that the output through motor 20 drives, and force feed is as the cooling water W of refrigeration agent.
Motor 20 has engine main body 21.Engine main body 21 is by not having illustrated cylinder cap and cylinder body to constitute.Be formed with water jacket 22, bypass channel 23 and communication passage 24 in the engine main body 21.Cooling water W circulates in water jacket 22, the cooling water W cooled engine main body 21 of circulation in water pump 22.Bypass channel 23 makes cooling water W be circulated to duct thermostat 60 from water jacket 22.About this point, bypass channel 23 gets up water jacket 22 middle outlet side sections and external communications particularly.Communication passage 24 is got up the inlet side part and the external communications of bypass channel 23.Engine main body 21 is provided with the temperature that detects cooling water W, be the cooling-water temperature sensor 91 of coolant water temperature THW and the engine rotation speed sensor 92 that is used for the rotational speed N E of detection of engine 20.The outlet side that cooling-water temperature sensor 91 is provided in water jacket 22 partly detects coolant water temperature THW.
Water-cooled manifold 30 is assembled on the engine main body 21.Water-cooled manifold 30 confluxes the waste gas of discharging from each inflator of motor 20.As shown in Figure 2, water-cooled manifold 30 comprises and surrounds all outside wall portions 302 of a plurality of outlet pipe 301.Between outside wall portions 302 and a plurality of outlet pipe 301, formed the cooling water runner.In water-cooled manifold 30, cooling water W is provided to the cooling water runner from cooling water introducing port 303, and discharges cooling water W from the cooling water runner via cooling water outlet 304.In the present embodiment, water-cooled manifold 30 is the exhaust systems cool device.
Turn back to Fig. 1, heater core 40 is carried out heat exchange between cooling water W and air.Heater core 40 is not used in having illustrated air-conditioning equipment.The function that the air that air-conditioning equipment is heated by heater core 40 through conveying in vehicle car has come warm braw equipment.Radiator 50 is through travelling wind or do not have the heat radiation of the cooling water W that the air blast of illustrated electric fan promotes to circulate, with cooling cooling water W.In the present embodiment, radiator 50 is a cooler.
The flow that cooling water W is regulated in aperture 70.Aperture 70 is that flow is fixed, the flow decline prearranging quatity of the cooling water W of feasible circulation.
Any formation in water pump 10, motor 20, water-cooled manifold 30, heater core 40, radiator 50, duct thermostat 60 or the aperture 70 suitably is included in a plurality of cooling water circulating paths 81 to 86.In addition, in a plurality of cooling water circulating paths 81 to 86, these each formation directly or via pipeline interconnects.Next, use Fig. 3 to Fig. 8 that a plurality of cooling water circulating paths 81 to 86 are specified.
The 1st cooling water circulating path 81 is the circulating paths that comprise that specifically water pump 10, engine main body 21, heater core 40 and duct thermostat 60 and cooling water W circulate in this order.In addition, when circulation in engine main body 21, specifically circulation in water jacket 22 of cooling water W.
The 2nd cooling water circulating path 82 is the circulating paths that comprise that specifically water pump 10, engine main body 21 and duct thermostat 60 and cooling water W circulate in this order.In addition, when circulation in engine main body 21, the order that cooling water W specifically presses water jacket 22, bypass channel 23 circulates in water jacket 22 and bypass channel 23.
The 3rd cooling water circulating path 83 is the circulating paths that comprise that specifically water pump 10, water-cooled manifold 30, engine main body 21 and duct thermostat 60 and cooling water W circulate in this order.In addition, when circulation in engine main body 21, cooling water W specifically circulates in communication passage 24 and bypass channel 23 by the order of communication passage 24, bypass channel 23.
The the 1st to the 3rd cooling water flow path 81 to 83 is the circulating paths that do not comprise radiator 50.
The 4th cooling water circulating path 84 is the circulating paths that comprise that specifically water pump 10, engine main body 21, heater core 40 and duct thermostat 60 and cooling water W circulate in this order.In addition, when circulation in engine main body 21, specifically circulation in water jacket 22 of cooling water W.
The 5th cooling water circulating path 85 is the circulating paths that comprise that specifically water pump 10, engine main body 21, radiator 50 and duct thermostat 60 and cooling water W circulate in this order.In addition, when circulation in engine main body 21, specifically circulation in water jacket 22 of cooling water W.
The 6th cooling water circulating path 86 is the circulating paths that comprise that specifically water pump 10, water-cooled manifold 30, aperture 70, radiator 50 and duct thermostat 60 and cooling water W circulate in this order.
In addition, in a plurality of cooling water circulating paths 81 to 86 that so constitute,, duct thermostat 60 when closing valve (in other words, cooling water W is not when radiator 50 circulations and when radiator 50 circulations), cooling water W circulation is arranged all in the water-cooled manifold 30 when leaving valve.
As shown in Figure 8, aperture 70 is set at particularly in the 6th cooling water circulating path 86 that comprises water-cooled manifold 30 than water-cooled manifold 30 and leans on the part in downstream side and the part more forward than radiator 50.More specifically, aperture 70 is set at than water-cooled manifold 30 and leans on the part in downstream side and liken the forward part in the position of confluxing for the 5th cooling water circulating path 85 of other cooling water circulating paths to.And; The flow of the cooling water W that discharges from water-cooled manifold 30 is regulated in the aperture 70 flow decline prearranging quatity of the cooling water W through making circulation particularly, so that the pressure of the cooling water W of circulation is higher than the system pressure of a plurality of cooling water circulating paths 81 to 86 in water-cooled manifold 30.This system pressure specifically is the pressure of the radiator pressure cap of radiator 50.In addition, in the present embodiment, aperture 70 is a flow regulator.
As shown in Figure 9, ECU 1 comprises microcomputer and the imput output circuit 5,6 that is made up of CPU 2, ROM 3, RAM 4 etc.These CPU 2, ROM 3, RAM 4 and imput output circuit 5,6 interconnect through bus 7.ECU 1 is constituted as major control motor 20.ECU 1 for example is constituted as particularly, and control does not have illustrated Fuelinjection nozzle.In addition, in addition ECU 1 also is constituted as control duct thermostat 60.These controlling object are electrically connected with ECU 1.
In addition, ECU 1 is connected with cooling-water temperature sensor 91, engine rotation speed sensor 92, Air flow meter 93 various sensor electrical such as (more specifically for getting into air quantity sensor 93a and intake air temperature sensor 93b).In addition; ECU 1 detects coolant water temperature THW based on the output of cooling-water temperature sensor 91; Output based on engine rotation speed sensor 92 detects rotational speed N E, and comes the entering air amount G A and the intake temperature THA of detection of engine 20 based on the output of Air flow meter 93.
About this point; In ECU 1, realize detection device and estimation unit on the function; Detection device detects a plurality of estimation factors of the entering air amount G A that comprises motor 20; Estimation unit is based on estimating cooling loss Qw by the detected a plurality of estimation factors of detection device, this cooling loss Qw be in water-cooled manifold 30 refrigeration agent from the suffered received heat of exhaust.Whether the operating condition that cooling loss Qw can be used in detection of engine 20 is in the high loaded process state.
Above-mentioned a plurality of estimation factors comprise that getting into air amount G A has the high dependency relation of the linearity because get between air amount G A and the cooling loss Qw.
In addition, above-mentioned a plurality of estimation factors preferably also comprise at least a among coolant water temperature THW, intake temperature THA or the rotational speed N E as refrigerant temperature.This is because these four factors have the cause of considerable influence to cooling loss Qw.
Particularly, if for example the running environmental conditions of motor 20 such as original state is different, then cooling loss Qw is also with difference.To this, coolant water temperature THW and intake temperature THA can represent the running environmental conditions of motor 20.In addition, if the frictional force of motor 20 increases, then owing to the heat that produces from motor 20 will increase, so cooling loss Qw also has the trend of increase.To this, rotational speed N E can represent the size of the frictional force of motor 20.Therefore, when estimating cooling loss Qw more accurately, preferably also comprise at least a among coolant water temperature THW, intake temperature THA or the rotational speed N E.
And about above-mentioned a plurality of estimation factors, cooling loss Qw is preferably based on the following formula (1) that comprises above-mentioned whole four factors and estimates.
Qw=(THW+THA) * NE * GA ... Formula (1)
That is, cooling loss Qw is preferably based on through coolant water temperature THW and intake temperature THA sum, rotational speed N E and gets into the value that the product of air amount G A calculates and estimates.This be because through experimental verification have the cause of the highest dependency relation of the linearity when estimating cooling loss Qw and between the cooling loss Qw of reality based on formula (1).Therefore, in ECU 1, specifically estimate cooling loss Qw based on formula (1).
In addition, in ECU 1, realize control gear on the function, control gear determines whether to make cooling water W to radiator 50 circulations based on the predetermined decision content relevant with cooling loss Qw.Control gear circulates via radiator 50 to allow cooling water W when the control duct thermostat of estimating 60 during more than or equal to predetermined decision content as the cooling loss Qw of received heat realizing on the function particularly.About this point, control gear is further realizing forcing to make duct thermostat 60 to open the control of valve as cooling loss Qw when being scheduled to decision content in the present embodiment particularly on the function.Thus, control gear is realized being used to determine whether to make cooling water W to the 5th and the 6th cooling water circulating path 85,86 circulations that comprise radiator 50 on function.In the present embodiment, duct thermostat 60 and ECU 1 are the circulation control apparatus.
Next, the action effect to cooling equipment 100 describes.In cooling equipment 100, be in out the valve state at (for example, coolant water temperature THW is smaller or equal to 75 ℃ occasion) duct thermostat 60 between cold period.Therefore, in cooling equipment 100, between cold period, cooling water W circulates in the 1st to the 3rd cooling water circulating path 81,82,83.In addition, the 1st to the 3rd cooling water circulating path 81,82,83 is the circulating path that does not comprise radiator 50.Thereby in cooling equipment 100, between cold period, the cooling water W of circulation is basically by radiator 50 coolings in engine main body 21.Therefore, in cooling equipment 100, the warm-up characteristics of motor 20 can improve thus.
In addition, in cooling equipment 100, the cooling water W of circulation is being formed on after flowing through water-cooled manifold 30 in communication passage 24 and the bypass channel 23 in the engine main body 21 and is circulating in the 3rd cooling water circulating path 83.Therefore, in cooling equipment 100, can with between cold period in water-cooled manifold 30 cooling water W from the suffered Btu utilization of exhaust in the warming-up of motor 20, can further improve the warm-up characteristics of motor 20 thus.Its result in cooling equipment 100, compares with the occasion of as shown in figure 10 cooling equipment 100X, can improve the warm-up characteristics of motor 20.
On the other hand, in cooling equipment 100, if become warm during, valve just left by duct thermostat 60.Therefore, in cooling equipment 100, if become warm during, cooling water W just in the 4th to the 6th cooling water circulating path 84,85,86 circulation.And the 5th and the 6th cooling water circulating path 85,86 is the circulating path that comprises radiator 50.Thereby in cooling equipment 100, during warm, the cooling water W that is cooled through radiator 50 passes through water pump 10 by force feed.Therefore, in cooling equipment 100, can cool off the water-cooled manifold 30 that is included in the 6th cooling water circulating path 86 thus, and then the cooling water W that can prevent or suppress in the water-cooled manifold 30 takes place or boiling overheated.That is, according to cooling equipment 100, preventing of overheated or boiling taken place or suppressed in raising and the cooling water W in the water-cooled manifold 30 that can take into account the warm-up characteristics of motor 20.
On the other hand, in cooling equipment 100, the thermal capacity of water-cooled manifold 30 is less than the thermal capacity of engine main body 21.Thereby in cooling equipment 100, the effect of transmitting about being heated comprises the cooling water W of circulation, and the suffered degree of water-cooled manifold 30 is greater than the suffered degree of engine main body 21.
In addition, in cooling equipment 100, as shown in figure 11, the flow of the cooling water W of circulation changes according to the open and-shut mode of duct thermostat 60 in water-cooled manifold 30.Said flow in during the flow of the cooling water W of circulation in water-cooled manifold 30 between cold period when particularly, closing valve warm when driving valve as duct thermostat 60 as duct thermostat 60.This is because the cooling water W of circulation circulation and be included in the bypass channel 23 the 3rd cooling water circulating path 83 in the big cause of the pressure loss of the cooling water W when circulating in the 3rd cooling water circulating path 83 when duct thermostat 60 closes valve in water-cooled manifold 30.
Therefore; In cooling equipment 100; For example when motor 20 has carried out the high loaded process of WOT etc. at once after cold start-up; Although thermal capacity is little; And the flow of the cooling water W of circulation is little; But the received heat of water-cooled manifold 30 sharply increases, and the cooling water W in the water-cooled manifold 30 may take place overheated prior to the cooling water W in the engine main body 21 or boiling thus.
About this point,, in cooling equipment 100, make the action that ECU 1 carries out based on flow chart shown in Figure 12 to this.This flow chart repeats with the minimum time lag between motor 20 on-stream periods.Whether ECU 1 judge temperature regulator 60 is in the valve state (step S1) that closes.If negate to judge, then require no special processing, so this flow chart temporarily finishes.On the other hand, if in step S1, made sure judgement, then ECU 1 judges that whether cooling loss Qw is more than or equal to predetermined decision content (step S2).
And,, be judged as that cooling water W may overheated or boiling in water-cooled manifold 30 as cooling loss Qw during more than or equal to predetermined decision content.Thereby if in step S2, made negative judgement, then at temporary transient process ends figure, if in step S2, made sure judgement on the other hand, then ECU 1 carries out the control (step S3) of positive closing duct thermostat 60.Thus, as shown in figure 13, carry out the control of positive closing duct thermostat 60.And thus, even under the situation that received heat has sharply increased in water-cooled manifold 30 between cold period, also the cooling water W that can prevent or suppress in the water-cooled manifold 30 is overheated.
In addition, when ECU 1 estimated cooling loss Qw, coolant water temperature THW, intake temperature THA, rotational speed N E and entering air amount G A can use the sensor that has been provided with to detect usually.Therefore, when grasping the Environmental Conditions state of water-cooled manifold 30, the situation of the temperature of the cooling water W that for example is used for directly detecting at water-cooled manifold 30 with new equipment, the sensor of delivery temperature is compared, and cooling equipment 100 is favourable aspect cost.
In addition, utilizing the sensor directly detect to grasp under the situation of Environmental Conditions state of water-cooled manifold 30 as stated, at actual detected positive opening duct thermostat 60 afterwards after received heat has increased.Therefore, in the case, especially the response characteristic with respect to the rapid increase of received heat may be not enough.With respect to this, cooling equipment 100 is compared with said situation also excellent aspect the response characteristic.
On the other hand; Thermal capacity to water-cooled manifold 30 is little; In cooling equipment 100, also aperture 70 is arranged on as above-mentioned in the 6th cooling water circulating path 86 than water-cooled manifold 30 lean on the downstream side branch and than with the position of confluxing of the 5th cooling water circulating path 85 than forward part.Therefore, in cooling equipment 100, as shown in figure 14, at the water-cooled manifold 30 of the upstream side that is arranged in aperture 70, the flow of cooling water W descends, and the pressure of cooling water W improves and the flow of decline is measured accordingly.
In addition; The pressure of cooling water W rises along with the rising of coolant water temperature THW; Thereby in cooling equipment 100; As shown in figure 15, about the inlet pressure P1 high 50kPa of the outlet pressure P2 of the cooling water W at cooling water outlet 304 places of water-cooled manifold 30 than the cooling water W at cooling water introducing port 303 places.Therefore, in cooling equipment 100, can improve the boiling point of the cooling water W in the water-cooled manifold 30, thus can also prevent or be suppressed at warm during cooling water W boiling in the water-cooled manifold 30.In addition; Because aperture 70 only is set; Therefore for example compare, can avoid complicating with the situation that the engine main body 21 as the cooling object is provided with the electronic type flow control valve respectively with water-cooled manifold 30 and is controlled at the flow that respectively cools off the cooling water W that circulates in the object.
So, cooling equipment 100 can prevent or be suppressed at cooling water W overheated or boiling and infringement motor 20 etc. in the water-cooled manifold 30.
The above embodiments are preferred embodiment of the invention.But the present invention is not limited to this, can in the scope that does not break away from main idea of the present invention, carry out various distortion.
For example, in the above-described embodiment, the situation that the water-cooled manifold 30 as the exhaust systems cool device is had concrete structure as shown in Figure 2 is illustrated.Yet, in the present invention, and nonessentially being defined in this, the exhaust systems cool device also can have all or part of other suitable structures that can come the coolant exhaust manifold through refrigeration agent.
In addition, for example in the above-described embodiment, cooling manifold 30 is illustrated for the situation of exhaust systems cool device.This is because cooling is to the cause of the exhaust of catalyzer inflow under the situation that can dispose near motor 20 at the catalyzer with purifying exhaust gas.Yet, in the present invention, and nonessentially being defined in this, the exhaust systems cool device also can be can cool off through refrigeration agent for example to be in other suitable formations of discharging the exhaust of the state of back before catalyzer flows into from motor.
In addition, for example in the above-described embodiment, duct thermostat 60 is illustrated for the situation of circulation control apparatus with ECU 1.Whether this is to make cooling water W to the duct thermostat 60 of radiator 50 circulations facility and in cause also favourable aspect the cost comparatively because when the circulation of control cooling water W, utilize to switch according to open and-shut mode.
Yet, also nonessentially in the present invention be defined in this, the pipeline that is communicated with radiator 50 and water pump 10 for example also can also be set, and solenoid valve for example be set in this pipeline as the COMM communication that can allow/cut off the circulation of cooling water W.And; Through replacing duct thermostat 60 to be used as the controlling object of ECU 1 this solenoid valve; And replace positive opening duct thermostat 60 and open and be in this solenoid valve that closes the valve state, can make cooling water W to radiator 50 circulations with the form of walking around duct thermostat 60.In the case, this solenoid valve and ECU 1 constitute the circulation control apparatus.
In addition, for example in the above-described embodiment, a plurality of cooling water circulating paths 81 to 86 are illustrated for the situation in a plurality of refrigerant cycle path.Yet, also nonessentially in the present invention being defined in this, a plurality of refrigerant cycle path also can constitute with other suitable reasonable quantities.
In addition, for example in the above-described embodiment, be illustrated to the 5th and the 6th cooling water circulating path 85,86 circulations that comprise radiator 50 and the situation of controlling the circulation of cooling water W determine whether to make cooling water W based on predetermined decision content.This is because with duct thermostat 60 and the cause of ECU 1 as the circulation control apparatus, through so constituting, can cool off more flow in addition, overheated when its result can improve the received heat that suppresses water-cooled manifold 30 and sharply increases or the effect of seething with excitement.
Yet; Also nonessentially in the present invention be defined in this; For example also can control the circulation of cooling water W; So that only threading a pipe to the 5th and the 6th cooling water flow, cooling water W comprises the 6th cooling water circulating path 86 circulations of water-cooled manifold 30 in 85,86; Can control the circulation of cooling water W in addition, so that cooling water W is for example after this also to 85 circulations of the 5th cooling water circulating path.
In the case, can cool off cooling water W stage by stage, can under the situation of the warm-up characteristics of taking into account motor 20, cool off cooling water W thus according to necessary degree.
Particularly; For example the 5th cooling water circulating path 85 also is provided with and the confluence of the 6th cooling water circulating path 86 and the bypass duct of walking around radiator 50, and solenoid valve for example also is set is used as to flow to this bypass duct to cooling water W and still flows to the COMM communication that radiator 50 switches.And, with this solenoid valve and duct thermostat 60 controlling object as ECU 1, and control electromagnetic valve so that positive opening during duct thermostat 60 cooling water W circulate to bypass duct.Thus, can control the circulation of cooling water W, so that only the 6th cooling water circulating path 86 circulations in the 5th and the 6th cooling water circulating path 85,86 of cooling water W.
In addition, after this further pass through this solenoid valve of control so that cooling water W to radiator 50 circulations, can make cooling water W also to 85 circulations of the 5th cooling water circulating path.In the case, for example can use a plurality of decision contents that comprise the 1st decision content and have the 2nd decision content of the value bigger to be used as predetermined decision content than the 1st decision content.In addition, in the case, duct thermostat 60, this solenoid valve and ECU 1 constitute the circulation control apparatus.
In addition, in the above-described embodiment, the situation that aperture 70 is included in the 6th cooling water circulating path 86 is illustrated.This be because can prevent or be suppressed at warm during the cause of boiling of cooling water W.Yet, also nonessentially in the present invention be defined in this, for example aperture 70 also can be arranged in the 3rd cooling water circulating path 83 the forward part of part and ratio engine main body 21 of leaning on the downstream side than water-cooled manifold 30.In the case, can prevent or suppress owing to between cold period the received heat of water-cooled manifold 30 sharply increase and cause cooling water W boiling.
In addition, in the above-described embodiment, aperture 70 is illustrated for the situation of flow regulator.Yet, also nonessentially in the present invention being defined in this, flow regulator for example also can be the electronic type flow control valve.And for example, also can improve the pressure of the cooling water W in the water-cooled manifold 30, perhaps regulate the pressure size of the cooling water W in the cooling manifold 30 according to the degree of necessity according to necessary situation through in ECU 1, suitably controlling this flow control valve.In addition, when this flow control valve of control like this, for example can perhaps control this flow control valve based on the size of cooling loss Qw in response to the size of cooling loss Qw.
In addition; Mainly in the ECU 1 of control motor 20, realize comparatively rationally though use various devices such as the detection device that uses when of the present invention, estimation unit, control gear, for example also can realize through hardware such as other control electronics, special electronic circuit or their combination.About this point, the circulation control apparatus among the present invention for example can be used as by duct thermostat 60 and the modular assembly that constitutes that has as the special electronic circuit of the function of control gear and realizes.
Claims (2)
1. the cooling equipment of a motor comprises:
Refrigeration agent force feed equipment, said refrigeration agent force feed equipment is to the common refrigeration agent of a plurality of refrigerant cycle path force feed;
Motor, the engine main body of said motor are included at least one the refrigerant cycle path in said a plurality of refrigerant cycle path;
The exhaust systems cool device; Said exhaust systems cool device is included at least one the refrigerant cycle path in said a plurality of refrigerant cycle path; The said engine main body of the ratio of heat capacities of said exhaust systems cool device is little, and said exhaust systems cool device uses the refrigeration agent of circulation to cool off said engine's exhaust system;
Cooler, said cooler are included at least one the refrigerant cycle path in said a plurality of refrigerant cycle path, and the refrigeration agent of circulation is cooled off;
The circulation control apparatus, said circulation control apparatus determines whether to make refrigeration agent in said a plurality of refrigerant cycle path, to comprise at least one refrigerant cycle path circulation of said cooler based on predetermined decision content, and the circulation of control refrigeration agent;
Wherein, said predetermined decision content be set to refrigeration agent in said exhaust systems cool device from the relevant decision content of the suffered received heat of exhaust.
2. the cooling equipment of motor as claimed in claim 1, wherein,
Also comprise flow regulator; Said flow regulator is included at least one the refrigerant cycle path that comprises said exhaust systems cool device in said a plurality of refrigerant cycle path; And regulate from the flow of the refrigeration agent of said exhaust systems cool device discharge, so that the pressure of the refrigeration agent that in said exhaust systems cool device, circulates is higher than the system pressure in said a plurality of refrigerant cycle path.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2009/055018 WO2010106615A1 (en) | 2009-03-16 | 2009-03-16 | Engine cooling device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102356220A true CN102356220A (en) | 2012-02-15 |
Family
ID=42739286
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009801581184A Pending CN102356220A (en) | 2009-03-16 | 2009-03-16 | Engine cooling device |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US20110265740A1 (en) |
| JP (1) | JP5267654B2 (en) |
| CN (1) | CN102356220A (en) |
| WO (1) | WO2010106615A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104775888A (en) * | 2015-04-08 | 2015-07-15 | 玉柴联合动力股份有限公司 | Water-jacket type exhaust manifold and engine provided with same |
| CN108474287A (en) * | 2015-11-13 | 2018-08-31 | 法国诺华公司 | Cooling circuit for motor vehicles |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8620516B2 (en) * | 2011-02-17 | 2013-12-31 | GM Global Technology Operations LLC | System and method for performing engine material temperature sensor diagnostics |
| AT521447B1 (en) * | 2018-06-20 | 2022-07-15 | Avl List Gmbh | EXTERNAL EXHAUST MANIFOLD |
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- 2009-03-16 WO PCT/JP2009/055018 patent/WO2010106615A1/en active Application Filing
- 2009-03-16 US US13/142,430 patent/US20110265740A1/en not_active Abandoned
- 2009-03-16 JP JP2011504629A patent/JP5267654B2/en not_active Expired - Fee Related
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Also Published As
| Publication number | Publication date |
|---|---|
| US20110265740A1 (en) | 2011-11-03 |
| JP5267654B2 (en) | 2013-08-21 |
| WO2010106615A1 (en) | 2010-09-23 |
| JPWO2010106615A1 (en) | 2012-09-20 |
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