CN104912680B - Automobile engine and its warm-up control method, device - Google Patents
Automobile engine and its warm-up control method, device Download PDFInfo
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- CN104912680B CN104912680B CN201510364462.6A CN201510364462A CN104912680B CN 104912680 B CN104912680 B CN 104912680B CN 201510364462 A CN201510364462 A CN 201510364462A CN 104912680 B CN104912680 B CN 104912680B
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Abstract
The invention discloses a kind of automobile engine warming up control method, the engine includes EGR valve and cooler for recycled exhaust gas, and the EGR valve is between the cooler for recycled exhaust gas and waste pipe；Methods described comprises the steps：Warming-up calibration value corresponding to each parameter of storage table sign engine operating condition, engine condition and ambient condition；Obtain under current state, characterize each current parameter value of engine operating condition, engine condition and ambient condition；Corresponding warming-up calibration value is respectively less than as warm-up condition using each current parameter value, warming-up is carried out according to the aperture of present engine regulating working conditions EGR valve；Treat that present engine temperature exceeds default engine temperature, warming-up is completed.This method realizes rapid warming-up using the egr system for being installed on engine, and while warming-up, the parts and normal work of engine will not be impacted.The invention also discloses the automobile engine of a kind of automobile engine warming up control device and the application device.
Description
Technical field
The present invention relates to technical field of engines, more particularly to a kind of automobile engine and its warm-up control method, dress
Put.
Background technology
90 DEG C~110 DEG C of the optimum working temperature in general (coolant temperature) of automobile engine, in the winter time or other temperature
Spend it is relatively low in the case of, engine start after need to carry out hot car warming-up, generally, temperature is lower, and warm-up period is longer.It is and warm
If the machine time is longer, the mechanical friction of engine can be increased, increase oil consumption, under the service efficiency and reliability that cause engine
Drop.
At present, a kind of mode of conventional shortening engine warm-up time is to carry out fast speed heat car using exhaust brake valve.
Specifically, when the current working of engine meets warm-up condition, exhaust brake valve is controlled, it is switched to warming-up operating position
(closing valve, block exhaust passage), carries out fast speed heat car, to shorten the warming up time using high-temp waste gas.
However, there are following problems in this kind of warming up mode：
When exhaust brake valve is in warming up operating position, waste gas can not discharge, the waste gas pressure before turbocharger of motor
Power can raise rapidly, the reliability of turbocharger can be influenceed when excessive, and then influence the service behaviour of engine；Simultaneously for
For engine equipped with EGR (Exhaust Gas Recirculation, waste gas recycling) system, entered using exhaust brake
During row warming-up, instantaneous caused high pressure can impact to parts such as EGR valve and coolers for recycled exhaust gas；
Exhaust brake valve is as normal exhaust brake function in use, engine is active flameout, and now turbine increases
Pressure is higher before depressor, and engine produces braking power to realize braking using this pressure；When warm-up condition establishment, make exhaust system
When dynamic valve is in warming-up operating position, engine is easy to cause moment passively to be stopped working because large quantity of exhaust gas can not be discharged, and influences
Normal driver behavior.
In view of this, for the automobile engine with egr system, its warming-up mode how is improved, while warming-up,
The parts and normal work of engine will not be impacted, be that the technology that those skilled in the art need to solve at present is asked
Topic.
The content of the invention
It is an object of the invention to provide a kind of automobile engine warming up control method, this method utilizes and is installed on engine
Egr system realizes rapid warming-up, and while warming-up, the parts and normal work of engine will not be impacted.
It is a further object of the present invention to provide the automobile hair of a kind of automobile engine warming up control device and the application device
Motivation.
In order to solve the above technical problems, the present invention provides a kind of automobile engine warming up control method, the engine bag
EGR valve and cooler for recycled exhaust gas are included, the EGR valve is between the cooler for recycled exhaust gas and waste pipe；
Methods described comprises the steps：
Warming-up calibration value corresponding to each parameter of storage table sign engine operating condition, engine condition and ambient condition；
Obtain under current state, characterize each current parameter value of engine operating condition, engine condition and ambient condition；
Corresponding warming-up calibration value is respectively less than as warm-up condition using each current parameter value, according to present engine regulating working conditions
The aperture of EGR valve carries out warming-up；
Treat that present engine temperature exceeds default engine temperature, warming-up is completed.
The automobile engine warming up control method, rapid warming-up is realized using egr system, due to engine normal operation shape
Under state, the cooler for recycled exhaust gas of egr system cools down the waste gas of recycling using engine coolant, so needing warming-up in engine
When, the temperature that can lift coolant using waste-gas heat in turn realizes warming-up.Specifically, in this programme, with engine work
Condition, engine condition and ambient condition are monitoring object, when it meets warm-up condition, pass through the aperture regulation of EGR valve, control
By the exhaust gas flow of cooler for recycled exhaust gas, using the temperature of the heat lift engine coolant of waste gas, accelerate warming-up process.
The present invention realizes warming-up by egr system, compared with prior art, has evaded by closing exhaust brake valve come real
Existing warming-up, impacts to turbocharger so as to avoid, it also avoid causing the parts such as EGR valve and cooler for recycled exhaust gas
Impact；Simultaneously, it is thus also avoided that engine passively stops working caused by exhaust brake valve is closed.
Alternatively, the MAP of the EGR valve aperture corresponding to working conditions of different engines and storage are established；
During warming-up, the MAP is searched according to present engine operating mode, obtains the aperture of EGR valve under current state.
Alternatively, the parameter for characterizing engine operating condition is rotating speed and distributive value；
The parameter for characterizing engine condition is coolant temperature；
The parameter for characterizing ambient condition is environment temperature.
Alternatively, the parameter for characterizing engine condition is also aided with oil temperature on the basis of coolant temperature；With or,
The parameter for characterizing ambient condition is also aided with environmental pressure on the basis of environment temperature.
Alternatively, warming-up is completed, and generates warming-up success status message, and transmit by CAN；
Automobile instrument captures warming-up success status message and shown from CAN.
Alternatively, automobile instrument shows warming-up success status by bright light, or voice, or the mode of word.
The present invention also provides a kind of automobile engine warming up control device, and the engine includes EGR valve and EGR is cooled down
Device, the EGR valve is between the cooler for recycled exhaust gas and waste pipe；
Described device includes：
Memory cell, for being warmed up corresponding to each parameter of storage table sign engine operating condition, engine condition and ambient condition
Machine calibration value；
Acquiring unit, for obtaining under current state, characterize engine operating condition, engine condition and ambient condition respectively when
Preceding parameter value；
Judge execution unit, corresponding warming-up calibration value is respectively less than as warm-up condition using each current parameter value, according to current
The aperture of engine operating condition regulation EGR valve carries out warming-up, until present engine temperature exceeds default engine temperature.
The principle of the automobile engine warming up control device is consistent with the principle of the above method, can reach identical technology
Effect.
Alternatively, the memory cell also stores the MAP of the EGR valve aperture corresponding to working conditions of different engines；
It is described to judge that execution unit adjusts the aperture of the EGR valve to be obtained from MAP and present engine operating mode
Corresponding EGR valve aperture.
Alternatively, in addition to：
Warm-up mode message generation unit, after the completion of warming-up, warming-up success status message is generated, and pass by CAN
It is defeated；
Automobile instrument captures warming-up success status message and shown from CAN.
The present invention also provides a kind of automobile engine, including egr system and the warming up control dress using the egr system
Put, the warming up control device is the automobile engine warming up control device described in any of the above-described.
Because above-mentioned automobile engine warming up control device has above-mentioned technique effect, so being warmed up using the automobile engine
The automobile engine of truck control device also has corresponding technique effect, is not repeated to discuss herein.
Brief description of the drawings
Fig. 1 is the structure schematic diagram for the engine for being provided with egr system；
Fig. 2 is the flow chart of engine warming up control method in specific embodiment；
Fig. 3 is the logic chart of engine warm car condition judgment in specific embodiment；
Fig. 4 is the flow chart of engine warming up control method in another specific embodiment；
Fig. 5 is the schematic diagram that different EGR valve apertures influence on warm-up period under certain operating mode.
In Fig. 1：
Air inlet pipe 101, blast pipe 102, charge air cooler 103, booster 104, cooler for recycled exhaust gas 105, EGR valve 106.
Embodiment
The core of the present invention is to provide a kind of automobile engine warming up control method, and this method utilizes and is installed on engine
Egr system realizes rapid warming-up, and while warming-up, the parts and normal work of engine will not be impacted.
Another core of the present invention is to provide the automobile hair of a kind of automobile engine warming up control device and the application device
Motivation.
The present invention is realized based on the engine with egr system.
Fig. 1 is refer to, it illustrates the structure diagram for the engine for being provided with egr system.
The portion that egr system discharges the exhaust pipe of engine 102 returns to air inlet pipe 101 again, to reduce NOxLife
Cheng Liang.
As shown in figure 1, egr system includes EGR valve 106 and cooler for recycled exhaust gas 105, EGR valve 106 is located at cooler for recycled exhaust gas 105
Upstream (being defined with the flow direction of waste gas), i.e., EGR valve 106 be located at waste pipe 102 and cooler for recycled exhaust gas 105 it
Between；Wherein, EGR valve 106 is used to control EGR rate；The waste gas that cooler for recycled exhaust gas 105 is recycled using the coolant cooling of engine.
Based on egr system, the present invention lifts coolant temperature using waste-gas heat, to accelerate warming-up process, shortens warm
The machine time, so as to effectively reduce engine mechanical friction, reduce oil consumption, and improve the service efficiency and reliability of engine.
In order that those skilled in the art more fully understand the present invention program, with reference to the accompanying drawings and detailed description
The present invention is described in further detail.
It is succinct for ease of understanding and describing, illustrate, have below in conjunction with automobile engine warming up control method and device
Beneficial effect is not repeated to discuss.
Fig. 2 is refer to, Fig. 2 is the flow chart of engine warming up control method in specific embodiment.
The engine warming up control method that the present embodiment provides comprises the following steps：
S11, storage table levy warming-up calibration value corresponding to each parameter of engine operating condition, engine condition and ambient condition；
S12, obtain under current state, characterize each current parameter value of engine operating condition, engine condition and ambient condition；
S13, using each current parameter value be respectively less than corresponding to warming-up calibration value as warm-up condition, according to present engine operating mode
The aperture for adjusting EGR valve 106 carries out warming-up；
S14, treat that present engine temperature exceeds default engine temperature, warming-up is completed.
It is pointed out that if warm-up condition is unsatisfactory for, the aperture of EGR valve 106 is according to engine normal operating condition
Under logic operated；After the completion of warming-up, the logic that the aperture of EGR valve 106 is also restored under normal operating condition is carried out
Operation.
The present embodiment provides engine warm truck control device, and the device includes components described below：
Memory cell, for being warmed up corresponding to each parameter of storage table sign engine operating condition, engine condition and ambient condition
Machine calibration value.
Acquiring unit, for obtaining under current state, characterize engine operating condition, engine condition and ambient condition respectively when
Preceding parameter value.
Judge execution unit, corresponding warming-up calibration value is respectively less than as warm-up condition using each current parameter value, according to current
The aperture of engine operating condition regulation EGR valve 106 carries out warming-up, until present engine temperature exceeds default engine temperature.
As above, the method and apparatus that the present embodiment provides, realize rapid warming-up, because engine is normal using egr system
Under running status, the cooler for recycled exhaust gas 105 of egr system cools down the waste gas of recycling using engine coolant, so in engine
When needing warming-up, the temperature that can lift coolant using waste-gas heat in turn realizes warming-up.Specifically, in this programme, with
Engine operating condition, engine condition and ambient condition are monitoring object, when it meets warm-up condition, pass through opening for EGR valve 106
Degree regulation, control, using the temperature of the heat lift engine coolant of waste gas, are added by the exhaust gas flow of cooler for recycled exhaust gas 105
Fast warming-up process.
Compared with prior art, this method and device have been evaded by closing exhaust brake valve to realize warming-up, so as to keep away
Exempt to impact pressure charging system (booster 104, charge air cooler 103 in such as Fig. 1), it also avoid to EGR valve 106 and EGR
The grade parts of cooler 105 impact；Simultaneously, it is thus also avoided that engine passively stops working caused by exhaust brake valve is closed.
In concrete scheme, the parameter for characterizing engine operating condition is rotating speed and distributive value；Characterize engine condition parameter be
Coolant temperature；The parameter for characterizing ambient condition is environment temperature.
Warming-up calibration value corresponding to above-mentioned each parameter can by advance by testing or emulating in a manner of obtain.
Further, it is more accurately reaction environment state, can also be on the basis of environment temperature when characterizing ambient condition
It is aided with environmental pressure.In practice, environmental pressure is basically identical, but under some particular surroundings (such as altitude environment), environment pressure
Whether power can be varied from, can also need warming-up to produce certain influence to engine, by environment temperature and environmental pressure combination table
Ambient condition is levied, can more accurately control warming-up.
Further,, can also be in coolant temperature when characterizing engine condition more accurately to react engine condition
On the basis of be aided with oil temperature.
In practice, it is also feasible with coolant pressure, oil pressure gauge motivational state of levying.It is of course also possible to use it
His parameter (such as fuel oil temperature) characterizes engine condition, and in contrast, coolant and machine oil state are more typical, can conduct
It is preferred that.
Generally, engine is inherently provided with detection or the corresponding sensor for calculating above-mentioned each characterization parameter or calculates mould
Block, so in concrete scheme, the real-time parameter value of above-mentioned each characterization parameter can utilize the detection acquisition of existing sensor (such as to start
Machine rotating speed, coolant temperature etc.), or calculating acquisition is carried out (such as engine according to associated arguments by existing computing module
Distributive value).
More specifically, it can be realized using the ECU of engine, ECU (Electronic Control Unit, electronics control
Unit processed) it is also known as car running computer, vehicle-mounted computer etc., foregoing memory cell, acquiring unit and judge that execution unit can be built in
In ECU.
Generally, engine temperature refers to coolant temperature, and whether warming-up is successful also referring especially to coolant temperature, so foregoing
In method and device, as long as monitoring that coolant temperature is more than default coolant temperature i.e. it is believed that warming-up is completed.
It is pointed out that from aforementioned method steps as can be seen that when judging whether to need warming-up, coolant temperature
A reference quantity is also served as, so, when actually setting, warming-up calibration value and the default coolant temperature of coolant temperature are
Two different storage values.
With reference to Fig. 3, Fig. 3 is the logic chart of engine warm car condition judgment in specific embodiment.
Present engine operating mode judges：
Speed probe detects to engine speed, and ECU can calculate present engine distributive value in real time；Detect
The current rotating speed of engine is less than the rotating speed warming-up calibration value of ECU memory storages, and the current distributive value being calculated is again smaller than ECU
During the distributive value warming-up calibration value of memory storage, present engine operating mode meets warm-up condition.
Explanation is needed exist for, engine operating condition is not necessarily limited by idling operation herein, as long as meeting the operating mode of demarcation
Condition (such as 1000r/min, 100mg/hug).
Present engine condition adjudgement：
ECTS detects coolant temperature in real time, and engine motor oil temperature sensor detects in real time
Engine motor oil temperature；Detect that the current coolant temperature of engine is less than the coolant temperature warming-up demarcation of ECU memory storages
Value, and detect the current oil temperature of engine again smaller than ECU memory storages oil temperature warming-up calibration value when, current power
Machine state meets warm-up condition.
Current ambient conditions judge：
Environment temperature sensor detects environment temperature in real time, and ambient pressure sensor detects environmental pressure in real time；Detect
Current environmental temperature be less than ECU memory storages environment temperature warming-up calibration value, and the current environment pressure detected again smaller than
During the environmental pressure warming-up calibration value of ECU memory storages, current ambient conditions meet warm-up condition.
It is pointed out that due to current OBD laws and regulations requirements when the temperature of the surroundings is low can without the supervision of discharge,
So discharge decline is led caused by EGR valve 106 is opened when can rationally, effectively evade warming up by the setting of the Rule of judgment
The OBD alarm problems of cause.
When above-mentioned engine operating condition, engine condition and ambient condition are satisfied by warm-up condition, warming-up is just proceeded by.
During warming-up, the aperture of EGR valve 106 is adjusted, control passes through the exhaust gas flow of cooler for recycled exhaust gas 105, to control to starting
The lifting of machine coolant temperature.
In specific scheme, MAP and the storage of the aperture of EGR valve 106 corresponding to working conditions of different engines can be established,
That is, the memory cell of described device also stores the MAP of the aperture of EGR valve 106 corresponding to working conditions of different engines.
Certainly, engine operating condition is also characterized with rotating speed and distributive value here.
It should be noted that being based on different type of machines, the MAP formed is also different.
When warm-up condition is set up, it is necessary to when carrying out warming-up, institute that can be according to current engine operating condition to being stored in ECU
State MAP to be searched, obtain the aperture with the EGR valve 106 of present engine Conditions Matching, and adjust with this.
Explanation is needed exist for, during warming up, different EGR can be carried out to different operating modes by setting for MAP
The aperture of valve 106 is set, so as to prevent situation bad under some operating modes from occurring, under idling operation, to avoid because of EGR valve 106
The problems such as idle stability caused by unlatching declines, vehicle vibration, the EGR valve 106 of the idling operation point can be demarcated as not open
Open or aperture very little.
Fig. 4 is refer to, Fig. 4 is the flow chart of engine warming up control method in another specific embodiment.
Compared with specific embodiment shown in Fig. 2, in the embodiment, after the completion of warming-up, following steps are still further comprised
Suddenly：
S15, generation warming-up success status message, and transmitted by CAN；
S16, automobile instrument capture warming-up success status message and shown from CAN.
Correspondingly, described device also includes warm-up mode message generation unit, so that after the completion of warming-up, generation warming-up is successful
State message, and transmitted by CAN, captured and shown by automobile instrument.
Specifically, automobile instrument can be by way of bright light, or the mode of language, or word mode show warming-up into
Work(state.
In this way, automobile instrument can show the successful state of warming-up and prompt driver, so that driver carries out subsequent operation, keep away
Exempt from excessive warming-up to cause to waste.
Fig. 5 is refer to, Fig. 5 is the schematic diagram that different EGR valve apertures influence on warm-up period under certain operating mode.
As shown in Figure 5, under certain operating mode, 85 DEG C are reached with engine temperature for warming-up target, the aperture of EGR valve 106 is
Time when 60% needed for warming-up be significantly less than the aperture of EGR valve 106 for 0 when warming-up needed for time, it is seen that by egr system,
Coolant temperature is heated using high-temp waste gas, can effectively shorten warm-up period, is rubbed so as to reduce the machinery of engine
Wipe, reduce oil consumption, improve the service efficiency and reliability of engine.
In addition, the invention also discloses a kind of automobile engine, including egr system and the warming up using the egr system
Control device, the warming up control device are automobile engine warming up control device described above.
Because above-mentioned automobile engine warming up control device has above-mentioned technique effect, so being warmed up using the automobile engine
The automobile engine of truck control device also has corresponding technique effect, is not repeated to discuss herein.
Detailed Jie has been carried out to a kind of automobile engine provided by the present invention and its warm-up control method, device above
Continue.Specific case used herein is set forth to the principle and embodiment of the present invention, and the explanation of above example is only
It is the method and its core concept for being used to help understand the present invention.It should be pointed out that for those skilled in the art
For, under the premise without departing from the principles of the invention, some improvement and modification can also be carried out to the present invention, these improve and repaiied
Decorations are also fallen into the protection domain of the claims in the present invention.
Claims (10)
1. automobile engine warming up control method, the engine includes EGR valve and cooler for recycled exhaust gas, and the EGR valve is positioned at described
Between cooler for recycled exhaust gas and waste pipe；
Characterized in that, methods described comprises the steps：
Warming-up calibration value corresponding to each parameter of storage table sign engine operating condition, engine condition and ambient condition；
Obtain under current state, characterize each current parameter value of engine operating condition, engine condition and ambient condition；
Corresponding warming-up calibration value is respectively less than as warm-up condition using each current parameter value, according to present engine regulating working conditions EGR
The aperture of valve carries out warming-up；
Treat that present engine temperature exceeds default engine temperature, warming-up is completed.
2. control method according to claim 1, it is characterised in that：
Establish the MAP of the EGR valve aperture corresponding to working conditions of different engines and storage；
During warming-up, the MAP is searched according to present engine operating mode, obtains the aperture of EGR valve under current state.
3. control method according to claim 1, it is characterised in that：
The parameter for characterizing engine operating condition is rotating speed and distributive value；
The parameter for characterizing engine condition is coolant temperature；
The parameter for characterizing ambient condition is environment temperature.
4. control method according to claim 3, it is characterised in that：
The parameter for characterizing engine condition is also aided with oil temperature on the basis of coolant temperature；With or,
The parameter for characterizing ambient condition is also aided with environmental pressure on the basis of environment temperature.
5. control method according to claim 1, it is characterised in that：
Warming-up is completed, and generates warming-up success status message, and transmit by CAN；
Automobile instrument captures warming-up success status message and shown from CAN.
6. control method according to claim 5, it is characterised in that：
Automobile instrument shows warming-up success status by bright light, or voice, or the mode of word.
7. automobile engine warming up control device, the engine includes EGR valve and cooler for recycled exhaust gas, and the EGR valve is positioned at described
Between cooler for recycled exhaust gas and waste pipe；
Characterized in that, described device includes：
Memory cell, for warming-up mark corresponding to each parameter of storage table sign engine operating condition, engine condition and ambient condition
Definite value；
Acquiring unit, for obtaining under current state, characterize each current ginseng of engine operating condition, engine condition and ambient condition
Numerical value；
Judge execution unit, corresponding warming-up calibration value is respectively less than as warm-up condition using each current parameter value, according to current power
The aperture of machine regulating working conditions EGR valve carries out warming-up, until present engine temperature exceeds default engine temperature.
8. automobile engine warming up control device according to claim 7, it is characterised in that：
The memory cell also stores the MAP of the EGR valve aperture corresponding to working conditions of different engines；
It is described judge execution unit adjust the EGR valve aperture it is corresponding with present engine operating mode to be obtained from MAP
EGR valve aperture.
9. automobile engine warming up control device according to claim 7, it is characterised in that also include：
Warm-up mode message generation unit, after the completion of warming-up, warming-up success status message is generated, and transmit by CAN；
Automobile instrument captures warming-up success status message and shown from CAN.
10. automobile engine, including egr system and the warming up control device using the egr system, it is characterised in that described
Warming up control device is the automobile engine warming up control device described in claim any one of 7-9.
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| CN109838323B (en) * | 2017-11-29 | 2020-12-25 | 长城汽车股份有限公司 | Valve control method, valve control device and vehicle |
| CN112576361B (en) * | 2019-09-30 | 2022-10-04 | 广州汽车集团股份有限公司 | Rapid warming method and rapid warming device based on temperature control module |
| CN111691990A (en) * | 2020-06-12 | 2020-09-22 | 东风商用车有限公司 | Rapid engine warming method |
| CN112782974B (en) * | 2020-11-02 | 2023-01-10 | 联合汽车电子有限公司 | Control parameter calibration method |
| CN112594074B (en) * | 2020-12-08 | 2022-11-29 | 长沙中联重科环境产业有限公司 | Control method and device, storage medium and equipment for auxiliary engine of special vehicle |
| CN115839283B (en) * | 2023-02-22 | 2023-06-06 | 四川腾盾科技有限公司 | Unmanned aerial vehicle piston engine starting method and system |
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| US6003315A (en) * | 1997-03-31 | 1999-12-21 | Caterpillar Inc. | Exhaust gas recirculation system for an internal combustion engine |
| JP2001280200A (en) * | 2000-03-30 | 2001-10-10 | Aisin Seiki Co Ltd | Exhaust gas circulation device of engine |
| GB2429763B (en) * | 2005-09-02 | 2011-01-19 | Ford Global Tech Llc | A cooling system for a motor vehicle providing cold start oil heating |
| DE102010036946A1 (en) * | 2010-08-11 | 2012-02-16 | Ford Global Technologies, Llc. | High pressure exhaust gas recirculation system with heat recovery |
| CN202007697U (en) * | 2011-02-25 | 2011-10-12 | 潍柴动力股份有限公司 | Engineering vehicle and diesel engine system thereof |
| CN104389714B (en) * | 2014-10-16 | 2017-10-10 | 中国北方发动机研究所(天津) | The internal combustion engine cooling means and system of a kind of utilization exhaust gas heat |
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