CN103147897B - Engine cold-start pre-heating mean and pre-heating system - Google Patents
Engine cold-start pre-heating mean and pre-heating system Download PDFInfo
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- CN103147897B CN103147897B CN201310062154.9A CN201310062154A CN103147897B CN 103147897 B CN103147897 B CN 103147897B CN 201310062154 A CN201310062154 A CN 201310062154A CN 103147897 B CN103147897 B CN 103147897B
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Abstract
The invention discloses a kind of engine cold-start pre-heating mean and pre-heating system.Described pre-heating system comprises: Real-Time Monitoring motor car engine external work environment temperature, and external work environment temperature and lower preset temperature value and higher preset temperature value is compared; Higher preset temperature value described in if external work environment temperature is greater than, direct ato unit; If described external work environment temperature is less than or equal to higher preset temperature value and be greater than lower preset temperature value, after second scheduled time was heated to engine charge and engine fuel, restart motor; Lower preset temperature value described in if external work environment temperature is less than or equal to, first scheduled time was heated to engine motor oil and engine coolant, and judge whether the oil temperature after heating is more than or equal to machine oil desired value, be then ato unit, otherwise restart motor after second scheduled time was heated to engine charge and engine fuel.Pre-heating system structure of the present invention is simple, and the efficiency of heating surface is high.
Description
Technical field
The present invention relates to engine art, particularly relate to engine cold-start pre-heating mean and pre-heating system.
Background technique
Motor irrelevantly cold start-up has very large harm to engine consumption, performance, life-span and environment, be mainly reflected in following some: 1) engine body, each part temperatures are low, in fuel-air mixture, part fuel oil is bonded on manifold, intake duct, need many oil spouts to compensate, add engine consumption.2) cold-starting oil temperature is low, and viscosity is large, increases starting resistance square, harsher to starter motor, battery request; Can not get lubricating timely and effectively between each kinematic pair, unstable wear simultaneously, reduce the life-span.3) accelerate cylinder wall wearing and tearing, reduce the life-span; The metal fillings ground off can be fallen in oil sump, shortens the oil exchange cycle; And firing chamber easily leaks gas.4) air inlet, fuel oil temperature are low, and atomizing effect is poor, burns insufficient even flame-out, causes hydrocarbon (HC) to discharge high.Existing motor car engine is generally heat cooling liquid or the machine oil of motor car engine by arranging Preheating unit, realizes cold start-up; But existing engine warming up component number is many, design very complicated, the also wayward and cold start-up length consuming time of temperature, so both adds mechanical loss and too increases cost.
Summary of the invention
The object of the invention is to for above-mentioned defect of the prior art, a kind of new engine cold-start pre-heating mean and pre-heating system are provided.Pre-heating system structure of the present invention is simple, and the efficiency of heating surface is high.In warm, consider the speed of the heating rate of machine oil, it is more reasonable to design.
According to one aspect of the present invention, the invention provides a kind of engine cold-start pre-heating mean, comprising:
Real-Time Monitoring motor car engine external work environment temperature T0, and described external work environment temperature T0 and lower preset temperature value TL and higher preset temperature value TH are compared;
Higher preset temperature value TH described in if described external work environment temperature T0 is greater than, direct ato unit;
If described external work environment temperature T0 is less than or equal to higher preset temperature value TH and be greater than lower preset temperature value TL, after the second scheduled time t2 is heated to engine charge and engine fuel, restart motor;
Lower preset temperature value TL described in if described external work environment temperature T0 is less than or equal to, first scheduled time t1 is heated to engine motor oil and engine coolant, and judge whether the oil temperature T1 after heating is more than or equal to machine oil desired temperature value T2, be then ato unit, otherwise restart motor after the second scheduled time t2 is heated to engine charge and engine fuel.
Because machine oil and cooling liquid heating rate are slow, consider the efficiency of heating surface, preferably described first scheduled time t1 is greater than described second scheduled time t2.
In one embodiment, electromagnetic induction device can be adopted to heat engine motor oil, engine coolant, engine charge and engine fuel.The power supply of automobile storage battery as electromagnetic induction device can be chosen.
In one embodiment, above-mentioned pre-heating mean can also comprise:
Real-Time Monitoring automobile storage battery dump energy, when described storage battery dump energy equals the minimum electricity of ato unit, stops powering to described electromagnetic induction device.
According to another aspect of the present invention, the invention provides a kind of engine cold-start pre-heating system, comprise
Ambient temperature monitoring cell, for Real-Time Monitoring motor car engine external work environment temperature T0;
First heating unit, for heating engine motor oil and engine coolant;
Second heating unit, for heating engine charge and engine fuel; And
Judge and performance element, for judging ato unit, the first heating unit or the second heating unit according to described external work environment temperature T0.
In one embodiment, described judgement and performance element can comprise:
Determination module, for comparing described external work environment temperature T0 and lower preset temperature value TL and higher preset temperature value TH;
First Executive Module, for described in being greater than as described external work environment temperature T0 during higher preset temperature value TH, direct ato unit;
Second Executive Module, for when described external work environment temperature T0 is less than or equal to higher preset temperature value TH and is greater than lower preset temperature value TL, first start after the second heating unit heats the second scheduled time t2 to engine charge and engine fuel and restart motor;
3rd Executive Module, for described in being less than or equal to as described external work environment temperature T0 during lower preset temperature value TL, start the first heating unit and the first scheduled time t1 is heated to engine motor oil and engine coolant, and judge whether the oil temperature T1 after heating is more than or equal to machine oil desired temperature value T2, be then ato unit, otherwise start after the second heating unit heats the second scheduled time t2 to engine charge and engine fuel and restart motor.
Preferably, above-mentioned pre-heating system can also comprise the temperature transducer detecting oil temperature T1.
In one embodiment, described heating unit can adopt way of electromagnetic induction to heat, and provides power supply by automobile storage battery.
Preferably, above-mentioned pre-heating system also can also comprise electric quantity monitoring module, for Real-Time Monitoring automobile storage battery dump energy, when described storage battery dump energy equals the minimum electricity of ato unit, stops powering to described heating unit.
At least there is following technique effect in the embodiment of the present invention: the preheating scheme in hinge structure, and the present invention has following advantage:
1) the present invention before an engine is started, produces machine oil, the cooling liquid that eddy current heat comes in heated engine by electromagnetic induction in metal inside.A whole set of heating system takes closed loop control.There is rate of heating fast, the high and feature of safety of the efficiency of heating surface.By accurate temperature controlling, the wasting of resources or Insufficient heating can be avoided.
2) can select to need heating position and degree of heat according to live state information.Before an engine is started, preliminary preheating can also be carried out to realize better atomizing effect to oil-feed and air inlet.
3) driver can select conventional cold start-up according to personal inclination or preheat cold start-up and pre-warmed time.
Accompanying drawing explanation
Fig. 1 is the structural representation of the engine cold-start pre-heating system according to the embodiment of the present invention.
Fig. 2 is the engine cold-start pre-heating mean flow chart according to the embodiment of the present invention.
Embodiment
For making the object of the embodiment of the present invention, technological scheme and advantage clearly, below in conjunction with accompanying drawing, specific embodiment is described in detail.
As shown in Figure 1, the engine cold-start pre-heating system that the embodiment of the present invention provides comprises ambient temperature monitoring cell 1, first heating unit 301, second heating unit 302 and judges and performance element 2.Ambient temperature monitoring cell 1 is for Real-Time Monitoring motor car engine external work environment temperature T0.First heating unit 301 is for heating engine motor oil and engine coolant.Second heating unit 302 is for heating engine charge and engine fuel.Judgement and performance element 2 are for judging ato unit 4, first heating unit 301 or the second heating unit 302 according to external work environment temperature T0.
Judgement and performance element 2 can comprise determination module 201, the first Executive Module 202, second Executive Module 203 and the 3rd Executive Module 204.Determination module is used for external work environment temperature T0 and lower preset temperature value TL and higher preset temperature value TH to compare.First Executive Module 202 for when external work environment temperature T0 is greater than higher preset temperature value TH, direct ato unit 4.When second Executive Module 203 is for being less than or equal to higher preset temperature value TH as external work environment temperature T0 and being greater than lower preset temperature value TL, first starts after the second heating unit 302 pairs of engine charges and engine fuel heat the second scheduled time t2 and restart motor 4.3rd Executive Module is used for when external work environment temperature T0 is less than or equal to lower preset temperature value TL, start the first heating unit 301 pairs of engine motor oils and engine coolant heats the first scheduled time t1, and judge whether the oil temperature T1 after heating is more than or equal to machine oil desired temperature value T2, be then ato unit 4, otherwise start after the second heating unit 302 pairs of engine charges and engine fuel heat the second scheduled time t2 and restart motor 4.
In unshowned embodiment, the present invention can also comprise the temperature transducer detecting oil temperature T1.In the present invention, heating unit can adopt way of electromagnetic induction to heat, and can provide power supply by automobile storage battery.Produce in metal inside the thermal source that eddy current hotwork is heating by electromagnetic induction.Electromagnetic induction heating can not produce naked light or electric leakage, safer, and conductor generates heat through high-frequency electromagnetic, and heat focuses on conductor, protects without the need to additional high temperature.Thermal source for heating hybrid vehicle engine oil can be arranged in oil pump for engine, also can be arranged on the oil suction dish in the oil sump of motor.Thermal source for heated cooling fluid can be arranged in water pump or liquid container.Thermal source for heated fuel oil and air inlet can be arranged on engine fuel supply oil circuit and engine charge air flue.By arranging heating unit like this, can realize directly heating machine oil etc., heating object such as machine oil, cooling liquid etc. can be made to reach better heating effect.And circuit is simple, only with wire, heating unit need be connected with automobile storage battery, be easy to arrange.In unshowned embodiment, the present invention can also comprise electric quantity monitoring module, for Real-Time Monitoring automobile storage battery dump energy, when storage battery dump energy equals the minimum electricity of ato unit, stop powering to heating unit, be automatically converted to conventional cold start mode.
In other unshowned embodiment, judge and performance element 2 in determination module 201, first Executive Module 202, second Executive Module 203, the 3rd Executive Module 204 and electric quantity monitoring module be all integrated in ECU.Lower preset temperature TL, higher preset temperature TH, machine oil desired temperature value T2, the first scheduled time t1 and the second scheduled time t2 can be set in advance in ECU, control by ECU is unified.Each heating unit operating time and working power completely controlled, only need extract corresponding engine Map according to live state information.For the temperature value of the above-mentioned lower predetermined temperature preset and higher predetermined temperature, can according to actual conditions as area surroundings, concrete vehicle condition, user to need etc. to arrange flexibly this temperature value.
Generally, when ambient temperature is at subzero 40 DEG C, machine oil heating to 10 DEG C, or even the time being heated to 0 DEG C all can be very long, and user probably subjective aspect is unwilling or the objective aspects no-wait long time.To wait for as of the prior art the preheating method being heated to preset temperature ability ato unit, just seem it is not very with practical value.This is due to once open preheating system, and before not reaching preset temperature, individual subscriber is difficult to know that judgement also needs heating how long just can reach preset temperature.Add the mode of heating efficiency of heating surface taked in prior art low, if still do not reach preset temperature after the heating long period, user waits with anxiety for a long time but does not reach predetermined pre-heat effect, owing to wasting for a long time, user probably after would not select to preheat before cold start-up.Or user oneself selects to open preheating system by personal inclination, manually stops heating, then manually boot motor when not continuing wait.Such design is not quite reasonable, for user or very inconvenient.Pre-heating system of the present invention considers the heating rate of machine oil in warm, if machine oil heats up very slow after heating first scheduled time t1, just can stop heating machine oil.The time that user can be able to wait for according to oneself sets the preheating time (i.e. the first scheduled time t1) of machine oil, within this time, if can't preset temperature be heated to, because the heating rate of machine oil is very slow, and do not had the sufficient time to continue again to wait for, can stop machine oil heating.(the second scheduled time t2) is to fuel oil and inlet air heating more in the short period of time, makes engine combustion abundant, reduces some adverse effects that cold start-up brings as far as possible.As can be seen here, design of the present invention more rationally and be rich in hommization.
Fig. 2 is the engine cold-start pre-heating mean flow chart according to the embodiment of the present invention.In embodiment as shown in Figure 2, after car load energising, environmental temperature monitoring module 1 performs step 501, Real-Time Monitoring external work environment temperature T0, and the temperature information of monitoring is passed to judgement and performance element 2.Judgement and performance element 2 perform step 502, judge whether external work environment temperature T0 is greater than lower preset temperature value TL.If step 502 judges that ambient temperature T0 is greater than lower preset temperature, perform step 503.In step 503, judgement and performance element 2 continue to judge whether external work environment temperature T0 is greater than higher preset temperature TH, if perform step 507, ato unit; If not, execution step 504, starts the second heating unit 302 pairs of engine charges and fuel oil heats, and performs step 507, ato unit after heating second scheduled time t2.
If in step 503, judge that ambient temperature T0 is less than or equal to lower preset temperature TL, then execution step 505, starts the first heating unit 301 pairs of engine motor oils and engine coolant heats, and performs step 506 after heating first scheduled time t1.In step 506, to judge whether machine oil heating in the first scheduled time t1 to machine oil desired temperature value T2 according to oil temperature T1.If so, step 507 is performed, ato unit; If not, execution step 504, starts the second heating unit 302 pairs of engine charges and fuel oil heats, and performs step 507, ato unit after heating second scheduled time t2.
In unshowned embodiment, also first can perform step 503, namely first judge whether operate outside temperature T0 is greater than higher preset temperature TH, if so, step 507 ato unit is performed, if not, perform step 502 again, judge whether operate outside temperature T0 is greater than lower preset temperature TL.All the other steps are same or similar, do not repeat them here.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (9)
1. an engine cold-start pre-heating mean, is characterized in that, comprising:
Real-Time Monitoring motor car engine external work environment temperature T0, and described external work environment temperature T0 and lower preset temperature value TL and higher preset temperature value TH are compared;
Higher preset temperature value TH described in if described external work environment temperature T0 is greater than, direct ato unit;
If described external work environment temperature T0 is less than or equal to higher preset temperature value TH and be greater than lower preset temperature value TL, after the second scheduled time t2 is heated to engine charge and engine fuel, restart motor;
Lower preset temperature value TL described in if described external work environment temperature T0 is less than or equal to, first scheduled time t1 is heated to engine motor oil and engine coolant, and judge whether the oil temperature T1 after heating is more than or equal to machine oil desired temperature value T2, be then ato unit, otherwise restart motor after the second scheduled time t2 is heated to engine charge and engine fuel.
2. engine cold-start pre-heating mean according to claim 1, is characterized in that, described first scheduled time t1 is greater than described second scheduled time t2.
3. engine cold-start pre-heating mean according to claim 1, is characterized in that, adopts electromagnetic induction device to heat engine motor oil, engine coolant, engine charge and engine fuel.
4. engine cold-start pre-heating mean according to claim 3, is characterized in that, automobile storage battery is as the power supply of electromagnetic induction device.
5. engine cold-start pre-heating mean according to claim 4, is characterized in that, also comprise:
Real-Time Monitoring automobile storage battery dump energy, when described storage battery dump energy equals the minimum electricity of ato unit, stops powering to described electromagnetic induction device.
6. an engine cold-start pre-heating system, is characterized in that, comprises
Ambient temperature monitoring cell, for Real-Time Monitoring motor car engine external work environment temperature T0;
First heating unit, for heating engine motor oil and engine coolant;
Second heating unit, for heating engine charge and engine fuel; And
Judge and performance element, for judging ato unit, the first heating unit or the second heating unit according to described external work environment temperature T0;
Wherein, described judgement and performance element comprise:
Determination module, for comparing described external work environment temperature T0 and lower preset temperature value TL and higher preset temperature value TH;
First Executive Module, for described in being greater than as described external work environment temperature T0 during higher preset temperature value TH, direct ato unit;
Second Executive Module, for when described external work environment temperature T0 is less than or equal to higher preset temperature value TH and is greater than lower preset temperature value TL, first start after the second heating unit heats the second scheduled time t2 to engine charge and engine fuel and restart motor;
3rd Executive Module, for described in being less than or equal to as described external work environment temperature T0 during lower preset temperature value TL, start the first heating unit and the first scheduled time t1 is heated to engine motor oil and engine coolant, and judge whether the oil temperature T1 after heating is more than or equal to machine oil desired temperature value T2, be then ato unit, otherwise start after the second heating unit heats the second scheduled time t2 to engine charge and engine fuel and restart motor.
7. engine cold-start pre-heating system according to claim 6, is characterized in that, also comprises the temperature transducer detecting oil temperature T1.
8. the engine cold-start pre-heating system according to any one of claim 6-7, is characterized in that, described heating unit adopts way of electromagnetic induction heating, and provides power supply by automobile storage battery.
9. engine cold-start pre-heating system according to claim 8, it is characterized in that, also comprise electric quantity monitoring module, for Real-Time Monitoring automobile storage battery dump energy, when described storage battery dump energy equals the minimum electricity of ato unit, stop powering to described heating unit.
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