CN108204324A - A kind of diesel engine plateau cold start pre-heating mean - Google Patents
A kind of diesel engine plateau cold start pre-heating mean Download PDFInfo
- Publication number
- CN108204324A CN108204324A CN201711298198.6A CN201711298198A CN108204324A CN 108204324 A CN108204324 A CN 108204324A CN 201711298198 A CN201711298198 A CN 201711298198A CN 108204324 A CN108204324 A CN 108204324A
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- warm
- heating
- diesel engine
- relay
- heater plug
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02N—STARTING OF COMBUSTION ENGINES; STARTING AIDS FOR SUCH ENGINES, NOT OTHERWISE PROVIDED FOR
- F02N19/00—Starting aids for combustion engines, not otherwise provided for
- F02N19/02—Aiding engine start by thermal means, e.g. using lighted wicks
- F02N19/04—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines
- F02N19/06—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of combustion-air by flame generating means, e.g. flame glow-plugs
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The present invention provides a kind of diesel engine plateau cold start pre-heating means, include the following steps：Diesel engine electric control system after the power is turned on, judges whether the smaller value of coolant temperature and intake air temperature is less than 5 DEG C, if then needing charge heating；Preceding warm control heater plug performs inlet air heating according to the pre- thermal endurance that MAP chart inquires；It after the completion of preceding preheating performs, sends out prompting waiting and starts, timing certain time, which waits for, to be started, and when rotating speed reaches start request, is stopped waiting and is started warm after performing.The present invention constructs the charge heating strategy under cold-mix asphalt mixture using a small amount of environmental variance, and the cooperation fuel-injected inlet air heating after warm is divided into prestarting single heating air inlet and is started according to engine condition, optimize and accelerate entire warm, under the limited computation resource that this strategy can be distributed in microcontroller, the warm of plateau extreme environment that is quick, real-time, efficiently controlling minimum 30 DEG C.
Description
Technical field
The invention belongs to Diesel Engine Technique Fields, and in particular to a kind of to improve diesel oil hair by control by stages intake air temperature
The method of cold-mix asphalt mixture under motivation altitude environment.
Background technology
Diesel-engine road vehicle is started in cold plateau area or winter, when the first job under cryogenic conditions recycles, due to
The environmental conditions such as engine components bulk temperature is relatively low, rapid heat dissipation, accumulator property reduce, machine oil resistance is big, it usually needs spray
Several times of fuel oils are projected, the combustion mixture for meeting start request could be formed.The fuel oil additionally discharged also causes initial several
Cycle generates a large amount of hydrocarbon discharge.Therefore, it is promptly started in order to reliable, it is necessary to improve the gas temperature into cylinder in advance
Degree improves the formation condition of mixed oil and gas, reduces mechanical power loss and Additional discharges.This process is also referred to as charge heating step
Suddenly.
Warm up strategy used by diesel engine at present, the starting stage heating that existing timing is tabled look-up, and have based on hair
The heating of motivation and accumulator status.The former realizes simply, but environmental suitability is not strong；The control logic of the latter is complicated, heating
Policy-flexible, but required calculation resources are big, and real-time performance is restricted by elements such as sensor signals.It is limited for calculation resources and
There are the applicable cases of requirement of real-time, should have a kind of logical AND to calculate more succinct effective charge heating method.
Invention content
In view of this, the present invention is directed to propose a kind of diesel engine plateau cold start pre-heating mean, to improve diesel engine in height
Original area carries out the operating mode of cold start.
In order to achieve the above objectives, the technical proposal of the invention is realized in this way：
A kind of diesel engine plateau cold start pre-heating mean, includes the following steps：
1) diesel engine electric control system after the power is turned on, acquires coolant temperature and intake air temperature by sensor, judges coolant
Whether the smaller value of temperature and intake air temperature is less than -5 DEG C, if then needing charge heating；
2) initialization of variable and fault self-checking are carried out to the flame-type preheater installed at inlet manifold；
3) enter preceding warm when self-test fault-free, when control heater plug continues according to the preheating that MAP chart inquires
Between perform inlet air heating, after being finished control relay give heater plug power-off；
4) it after the completion of preheating performs before, sends out prompting waiting and starts, timing certain time, which waits for, to be started, when rotating speed has reached
It is dynamic when requiring, stop waiting for simultaneously start to perform after warm, rear warm is equally to inquire preheating time according to MAP chart；
If rotating speed is unable to reach start request always, terminate warm and send out unsuccessfully to prompt.
Relative to the prior art, the present invention has the advantage that：
The present invention constructs the charge heating strategy under cold-mix asphalt mixture using a small amount of environmental variance, and according to engine shape
Warm is divided into the cooperation fuel-injected inlet air heating after prestarting single heating air inlet and starting by state, is optimized and is simultaneously added
The entire warm of speed, under the limited computation resource that this strategy can be distributed in microcontroller, it is quick, in real time, efficiently control
The warm of minimum -30 DEG C of plateau extreme environment.
Description of the drawings
The attached drawing for forming the part of the present invention is used to provide further understanding of the present invention, schematic reality of the invention
Example and its explanation are applied for explaining the present invention, is not constituted improper limitations of the present invention.In the accompanying drawings：
Fig. 1 is the state transition figure in warm of the embodiment of the present invention；
Fig. 2 is diesel engine warming member circuit diagram of the embodiment of the present invention.
Specific embodiment
It should be noted that in the absence of conflict, the feature in embodiment and embodiment in the present invention can phase
Mutually combination.
The present invention will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.
A kind of diesel engine plateau cold start pre-heating mean, includes the following steps：
Diesel engine electric control system acquires coolant temperature and intake air temperature after the power is turned on, by sensor, judges coolant temperature
Whether degree and the smaller value of intake air temperature are less than -5 DEG C, if then needing charge heating, are preheated using divided cylinder type；
Initialization of variable and fault self-checking are carried out to the flame-type preheater installed at inlet manifold；
Enter preceding warm, the pre- thermal endurance that control heater plug is inquired according to MAP chart when self-test fault-free
Inlet air heating is performed, relay is controlled to be powered off to heater plug after being finished；
Before normal execution after warm, waiting is prompted to start to driver using warning light, timing 20s is waited for
It is dynamic, when rotating speed reaches start request (can demarcate), stop warm after waiting for and start to perform, looked into also according to MAP chart
Ask preheating time；If rotating speed is unable to reach start request always, terminate warm and send out unsuccessfully to prompt, it is entire preheated
State transition figure in journey is as shown in the figure.
Process of self-test is：When system judgement is preheated, relay under no speed conditions to flame-type preheater,
The feedback signal of heater plug carries out electro-detection, and fault detect is carried out, and start in warm to the feedback signal of solenoid valve
Posterior circle 10ms is detected the feedback signal of relay, solenoid valve, is tied when detecting that relay breaks down continuous 5 times
Beam warm.
As shown in Fig. 2, the flame-type preheater includes relay, heater plug and solenoid valve, by controlling relay real
The power on/off of existing heater plug controls fuel injector to spray fuel oil by controlling solenoid valve conduction；(although the electric heater thermal efficiency is more
Height, but operating temperature range, not as good as flame-type preheater, in highlands, application is limited), diesel oil is made in air inlet by heater plug
Combustion inner pipe heats air inlet, and heater plug of the power for 200W or so starts primary only power consumption 0.35A or so, and environment temperature is 20
DEG C when, cylinder intake temperature can reach 140 DEG C.
The present embodiment diesel engine electric control system uses the 80C196 microcontrollers of 16 to control flame-type pre- as control platform
Hot device carries out the gas for entering cylinder heating stage by stage.Microcontroller receive intake air temperature signals from environmental sensor and
Coolant temperature signal takes junior to establish MAP chart as environment input quantity to determine the time of each stage preheating.
For the present invention using pre-heating mean stage by stage, entire warm is divided into before (startings) warm and (starting) afterwards in advance
Thermal process, correspond respectively to before diesel engine starting with after starting.In entire warm, control relay makes heater plug be powered
Air inlet is heated, and in the rear warm after diesel engine starting, solenoid valve conduction is also controlled, sprays fuel oil.Entire pre-
In thermal process, cycle detection preheats the state of device, and until preheating terminates, control heater plug, solenoid valve power off.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (2)
1. a kind of diesel engine plateau cold start pre-heating mean, it is characterised in that include the following steps：
1) diesel engine electric control system after the power is turned on, acquires coolant temperature and intake air temperature by sensor, judges coolant temperature
Whether the smaller value with intake air temperature is less than -5 DEG C, if then needing charge heating；
2) initialization of variable and fault self-checking are carried out to the flame-type preheater installed at inlet manifold；
3) enter preceding warm when self-test fault-free, control heater plug is held according to the pre- thermal endurance that MAP chart inquires
Row inlet air heating controls relay to be powered off to heater plug after being finished；
4) it after the completion of preheating performs before, sends out prompting waiting and starts, timing certain time, which waits for, to be started, and is wanted when rotating speed reaches starting
When asking, stop warm after waiting for and start to perform, rear warm is equally to inquire preheating time according to MAP chart；If turn
Speed is unable to reach start request always, then terminates warm and send out unsuccessfully to prompt.
2. a kind of diesel engine plateau cold start pre-heating mean according to claim 1, it is characterised in that：The process of self-test
For：When system judgement is preheated, the feedback signal of relay, heater plug under no speed conditions to flame-type preheater
Electro-detection is carried out, fault detect is carried out, and start Posterior circle 10ms to relay in warm to the feedback signal of solenoid valve
Device, solenoid valve feedback signal be detected, terminate warm when detecting that relay breaks down continuous 5 times.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298198.6A CN108204324A (en) | 2017-12-08 | 2017-12-08 | A kind of diesel engine plateau cold start pre-heating mean |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711298198.6A CN108204324A (en) | 2017-12-08 | 2017-12-08 | A kind of diesel engine plateau cold start pre-heating mean |
Publications (1)
| Publication Number | Publication Date |
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| CN108204324A true CN108204324A (en) | 2018-06-26 |
Family
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| CN201711298198.6A Pending CN108204324A (en) | 2017-12-08 | 2017-12-08 | A kind of diesel engine plateau cold start pre-heating mean |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098910A (en) * | 2018-09-07 | 2018-12-28 | 浙江吉利控股集团有限公司 | A kind of auxiliary system starting method and apparatus |
| CN109339990A (en) * | 2018-10-30 | 2019-02-15 | 中国北方发动机研究所(天津) | A kind of active flame charge heating control system and method |
| CN109404176A (en) * | 2018-11-20 | 2019-03-01 | 汽解放汽车有限公司 | A kind of commercial vehicle engine air inlet intermittent-heating control system and method based on state machine |
| CN111520271A (en) * | 2020-04-22 | 2020-08-11 | 东风越野车有限公司 | Auxiliary starting control method for engine of off-road vehicle in plateau high-cold environment |
| CN114320702A (en) * | 2021-12-17 | 2022-04-12 | 中国北方发动机研究所(天津) | Air inlet heating control method for diesel engine |
| CN116066281A (en) * | 2022-12-28 | 2023-05-05 | 北京理工大学 | Flame preheating plug oil injection method for realizing cold start of diesel engine |
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| CN101387255A (en) * | 2008-10-20 | 2009-03-18 | 奇瑞汽车股份有限公司 | Low-temperature cold-start control method for diesel engine with heater plug |
| CN104179619A (en) * | 2013-05-27 | 2014-12-03 | 北汽福田汽车股份有限公司 | Preheat control system and method for glow plug |
| CN205025674U (en) * | 2015-10-19 | 2016-02-10 | 中国重汽集团济南动力有限公司 | Vehicle flame preheats starting device |
| CN105370472A (en) * | 2013-08-04 | 2016-03-02 | 刘载海 | Working method of water and electricity integrated intelligent diesel heating system |
| CN106468236A (en) * | 2015-08-20 | 2017-03-01 | 义乌正隆新能源科技有限公司 | High-power diesel engine low temperature quick one-key start system and startup method automatically |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101387255A (en) * | 2008-10-20 | 2009-03-18 | 奇瑞汽车股份有限公司 | Low-temperature cold-start control method for diesel engine with heater plug |
| CN104179619A (en) * | 2013-05-27 | 2014-12-03 | 北汽福田汽车股份有限公司 | Preheat control system and method for glow plug |
| CN105370472A (en) * | 2013-08-04 | 2016-03-02 | 刘载海 | Working method of water and electricity integrated intelligent diesel heating system |
| CN106468236A (en) * | 2015-08-20 | 2017-03-01 | 义乌正隆新能源科技有限公司 | High-power diesel engine low temperature quick one-key start system and startup method automatically |
| CN205025674U (en) * | 2015-10-19 | 2016-02-10 | 中国重汽集团济南动力有限公司 | Vehicle flame preheats starting device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109098910A (en) * | 2018-09-07 | 2018-12-28 | 浙江吉利控股集团有限公司 | A kind of auxiliary system starting method and apparatus |
| CN109339990A (en) * | 2018-10-30 | 2019-02-15 | 中国北方发动机研究所(天津) | A kind of active flame charge heating control system and method |
| CN109339990B (en) * | 2018-10-30 | 2021-01-12 | 中国北方发动机研究所(天津) | Active flame air inlet preheating control system and method |
| CN109404176A (en) * | 2018-11-20 | 2019-03-01 | 汽解放汽车有限公司 | A kind of commercial vehicle engine air inlet intermittent-heating control system and method based on state machine |
| CN111520271A (en) * | 2020-04-22 | 2020-08-11 | 东风越野车有限公司 | Auxiliary starting control method for engine of off-road vehicle in plateau high-cold environment |
| CN114320702A (en) * | 2021-12-17 | 2022-04-12 | 中国北方发动机研究所(天津) | Air inlet heating control method for diesel engine |
| CN114320702B (en) * | 2021-12-17 | 2023-05-16 | 中国北方发动机研究所(天津) | Air inlet heating control method for diesel engine |
| CN116066281A (en) * | 2022-12-28 | 2023-05-05 | 北京理工大学 | Flame preheating plug oil injection method for realizing cold start of diesel engine |
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Application publication date: 20180626 |
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