CN108035831A - A kind of applicable highland and severe cold environment diesel engine assisted cold start device and control method - Google Patents
A kind of applicable highland and severe cold environment diesel engine assisted cold start device and control method Download PDFInfo
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- CN108035831A CN108035831A CN201711248116.7A CN201711248116A CN108035831A CN 108035831 A CN108035831 A CN 108035831A CN 201711248116 A CN201711248116 A CN 201711248116A CN 108035831 A CN108035831 A CN 108035831A
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- air inlet
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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
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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
- F02N19/10—Aiding engine start by thermal means, e.g. using lighted wicks by heating of fluids used in engines by heating of engine coolants
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of applicable highland and severe cold environment diesel engine assisted cold start device and control method, the device heats air inlet using heater and infrared coating strainer, first air intake branch and the second air intake branch form gas flow loop to heat air inlet repeatedly, and the efficiency of heating surface is high；Equipped with air accumulator, a certain amount of heating air inlet can be stored, carrys out assisted cold start to provide the high temperature air inlet of sufficient amount, completes the transition from cold start-up to engine work state.In addition, before cold start-up, using electric-heating-wire-heating cooling water, be conducive to starting the temperature of the high engine body of engine premise, can the auxiliary diesel cold start-up effectively under highland and severe cold environment, quickly complete the transition for reaching normal working temperature from cold start-up low-temperature cooling water to cooling water.
Description
Technical field
The present invention relates to assisted cold start device and control method, more particularly to a kind of applicable highland and severe cold environment diesel engine
Assisted cold start device and control method.
Background technology
Diesel engine is since its power is big, and long lifespan, power performance is good, and the thermal efficiency is higher, and fuel economy is preferable etc.
Feature, is widely used in heavy-duty car, motorbus, engineering machinery, ship, generating set etc..
In the geographical environment in the world, the vast area on the land in China, geographical environment is sufficiently complex, and high original area
Account for the 37% of territory total area.Highlands is due to height above sea level, and average temperature of the whole year is relatively low, so highlands is often with height
It is cold.The climate characteristic of highlands：Atmospheric pressure is low, and atmospheric density is small, and air oxygen content is low, cold weather, and day and night temperature is big.
The special geological surrounding and climatic characteristic of highlands generate significant impact to the properties of diesel engine, especially
It is easily lead to diesel engine often cannot start or start it is extremely difficult, and under a cold state by force start can cause engine
The abrasion aggravation of the critical components such as cylinder sleeve, piston, influences the service life of engine.According to the relevant information, height above sea level 4000m, -25 DEG C
Under the conditions of diesel engine starting difficulty equivalent to -40 DEG C of low temperature in plains region when state of starting operating.In recent years, both at home and abroad to diesel engine
The measure that cold-starting uses is very much, but more effective auxiliary starter measure is less.
The content of the invention
It is an object of the invention to overcome the shortcomings of prior art, there is provided one kind can be aided in effectively under highland and severe cold environment
Cold boot of diesel, is conducive to the applicable auxiliary cold starting boosting of highland and severe cold environment diesel engine that cooling water is rapidly achieved normal working temperature
Dynamic device and control method.
A kind of applicable highland and severe cold environment diesel engine assisted cold start device of the present invention, along airintake direction in air inlet pipe
Air cleaner and check valve are sequentially arranged with, the import of the air inlet pipe is connected with surrounding air, and the air inlet pipe goes out
Mouthful and the import of the first air intake branch and the inlet communication of the second air intake branch, first air intake branch is along airintake direction
Air pump and air accumulator are sequentially connected, close to a diameter of reducing expanding reach of the first air intake branch of air accumulator entrance, described
Reducing expanding reach entrance tube chamber in installation having heaters, in the tube chamber of reducing expanding reach and perpendicular to gas flowing side
To infrared coating strainer is provided with, heater alignment infrared coating strainer is set, and the heater is used for infrared
Coated screen heats, and is wrapped with insulating layer in the air accumulator, the air inlet crossed for Heat preservation, in the second air intake branch
Entrance valve is installed, intake air temperature sensor is installed on second air intake branch, the first air intake branch and
The outlet of second air intake branch is connected with inlet manifold jointly, and the inlet manifold is divided into multiple inlet manifold and engine
The connection of each cylinder, air inlet is provided for each cylinder of engine, the outlet of the cooling duct in engine cylinder body by cooling water channel successively
The import of cooling water tank, water pump, three-way valve, radiator and cooling duct is connected, cooling-water temperature sensor, which is installed on to enter, to be started
Cooling water terminal before machine, for detecting the temperature of cooling water, a valve port of the three-way valve passes through branch pipe and radiator
Outlet be connected with the cooling water channel between cooling duct import, heater strip is installed in the cooling water tank, for adding
Cooling water during hot cold start-up, electronic control unit pass through control line and intake air temperature sensor, heater, air pump, valve respectively
Door, heater strip, three-way valve and cooling-water temperature sensor are connected.
A kind of control method for being applicable in highland and severe cold environment diesel engine assisted cold start, comprises the following steps：
Before cold start-up, driver's electron control unit sends a preparation enabling signal, electronic control unit control
Heater is opened, air pump is opened, check valve is opened and valve is opened, and infrared coating strainer absorbs the heat that heater gives off,
Under the air-extraction function of air pump, air inlet passes sequentially through air cleaner, check valve, air pump and infrared coating strainer, and air inlet is logical
It is heated when crossing infrared coating strainer, the air inlet after heating is subsequently into air accumulator, and engine is also not actuated at this time, inlet manifold
Path is not formed with inlet manifold, enters the second air intake branch after the air-flow outflow in air accumulator, then from the second air intake branch stream
Air accumulator can be returned to the pumping of air pump by going out, and be formed into a loop to heat air inlet repeatedly；At the same time, before cold start-up, driver
After electron control unit sends a preparation enabling signal, electronic control unit control heater strip is begun to warm up, and water pump is opened
And the valve port all the way for controlling three-way valve to lead to branch pipe is opened, and cooling water is directly entered after water pump without radiator and is started
Machine；
When intake air temperature sensor detects that intake air temperature is higher than design temperature, pass through control line electron control unit
Signal is sent, electronic control unit control heater is closed, and air pump is kept it turned on, and check valve stays open, and valve is closed, driver
Start engine, inlet manifold and inlet manifold form path, be stored in the air inlet being heated in air accumulator, pass through inlet manifold
Enter with inlet manifold in cylinder；After engine stabilizer is run, electronic control unit control valve is opened, air pump is closed, into
Air inlet in tracheae enters in cylinder through the second air intake branch, inlet manifold and inlet manifold, completes from cold start-up to engine
The transition of normal operating conditions；
When cooling-water temperature sensor detects that cooling water temperature is higher than design temperature, controlled by control line electron
Unit sends signal, and electronic control unit control heater strip stops heating, while controls three-dimensional valve events to make cooling water by dissipating
Hot device enters engine, completes the transition for reaching normal working temperature from cold start-up low-temperature cooling water to cooling water.
Compared with prior art, the present invention has the advantage that：
First, during cold-starting automobile, under highland and severe cold environment, intake air temperature is relatively low so that cold start-up is difficult.The present invention adopts
The mode heated repeatedly with circuit heats air inlet, and the efficiency of heating surface is high.This is externally provided with air accumulator, can store a certain amount of add
Hot air inlet, carrys out assisted cold start to provide the high temperature air inlet of sufficient amount.
Second, during cold-starting automobile, the cylinder wall temperature of cold is relatively low under highland and severe cold environment, also so that cold start-up is difficult.
Before cold start-up, using electric-heating-wire-heating cooling water.On the one hand be conducive to before engine is started, improve the temperature of engine,
Can the auxiliary diesel cold start-up effectively under highland and severe cold environment；On the other hand be conducive to cooling water and be rapidly achieved normal work temperature
Degree.
Brief description of the drawings
Fig. 1 is a kind of structure diagram for being applicable in highland and severe cold environment diesel engine assisted cold start device of the present invention；
Fig. 2 is a kind of part-structure signal for being applicable in highland and severe cold environment diesel engine assisted cold start device of the present invention
Figure.
Embodiment
The present invention will be described in detail with specific embodiment below in conjunction with the accompanying drawings.
A kind of applicable highland and severe cold environment diesel engine assisted cold start device of the present invention as shown in drawings, along air inlet side
To air cleaner 12 and check valve 11 is sequentially arranged with air inlet pipe 13, import and the surrounding air of the air inlet pipe 13 connect
Lead to, outlet and the import of the first air intake branch 5 and the inlet communication of the second air intake branch 15 of the air inlet pipe 13,
First air intake branch is sequentially connected air pump 10 and air accumulator 7 along airintake direction, close to 7 entrance of air accumulator
The first air intake branch a diameter of reducing expanding reach, having heaters is installed in the entrance tube chamber of the reducing expanding reach
9, infrared coating strainer 8 is installed in the tube chamber of reducing expanding reach and perpendicular to gas flow direction, the heater 9 is right
Quasi- infrared coating strainer 8 is set, and the heater 9 is used to heat infrared coating strainer 8, the heater 9 and infrared
Coated screen 8 is commercially available.Insulating layer 6 is wrapped with the air accumulator 7, the air inlet crossed for Heat preservation.Second
The entrance of air intake branch 15 is provided with valve 14, and intake air temperature sensor 4 is provided with second air intake branch 15.
The outlet of first air intake branch 5 and the second air intake branch 15 is connected with inlet manifold 3 jointly, and the inlet manifold 3 is divided into more
A inlet manifold 2 is connected with each cylinder of engine 1, and air inlet is provided for each cylinder of engine 1.
The outlet of cooling duct in 1 cylinder body of engine is sequentially connected cooling water tank 18, water pump 19, three-dimensional by cooling water channel
The import of valve 20, radiator 21 and cooling duct, cooling-water temperature sensor 22 are installed on the cooling water terminal before entering engine,
For detecting the temperature of cooling water.The outlet and cooling duct import that one valve port of the three-way valve passes through branch pipe and radiator
Between cooling water channel be connected, heater strip 17 is installed in the cooling water tank 18, it is cold during for heating cold start-up
But water.
Electronic control unit 16 respectively by control line and intake air temperature sensor 4, heater 9, air pump 10, valve 14,
Heater strip 17, three-way valve 20 and cooling-water temperature sensor 22 are connected.
A kind of control method for being applicable in highland and severe cold environment diesel engine assisted cold start, comprises the following steps：
Before cold start-up, driver's electron control unit 16 sends a preparation enabling signal, electronic control unit 16
Heater 9 is opened, air pump 10 is opened, check valve 11 is opened and valve 14 is opened for control.Infrared coating strainer 8 absorbs heater 9
The heat given off, for the flow direction of air inlet as shown in Fig. 2, under the air-extraction function of air pump 10, air inlet passes sequentially through air cleaner
12nd, check valve 11, air pump 10 and infrared coating strainer 8, air inlet by being heated during infrared coating strainer 8, after heating into
Gas is subsequently into air accumulator 7.Since engine is also not actuated at this time, inlet manifold 3 and inlet manifold 2 do not form path, gas storage
Enter the second air intake branch 15 after air-flow outflow in tank 7, then can be returned from the outflow of the second air intake branch 15 with the pumping of air pump 10
Air accumulator 7 is returned, is formed into a loop to heat air inlet repeatedly.Since the volume of air accumulator 7 is larger, so while from air inlet pipe 13 into
Gas, while forming circuit heats repeatedly；At the same time, before cold start-up, driver's electron control unit 16 sends a standard
After standby enabling signal, electronic control unit 16 controls heater strip 17 to begin to warm up, and water pump 19 is opened and controls three-way valve 20 to lead to
The valve port all the way of branch pipe is opened, and cooling water is directly entered engine 1 without radiator 21 after water pump 19.Heater strip 17
Cooling water is heated, mobilization dynamic, when heated cooling water passes through engine 1, heated engine body are provided by water pump 19.
On the one hand be conducive to before engine is started, improve the temperature of engine, can effectively under highland and severe cold environment auxiliary diesel
Cold start-up；On the other hand being conducive to cooling water is rapidly achieved normal working temperature.
When intake air temperature sensor 4 detects that intake air temperature is higher than design temperature, controlled by control line electron single
Member 16 sends signal, and electronic control unit 16 controls heater 9 to close, and air pump 10 is kept it turned on, and check valve 11 stays open, valve
Door 14 is closed.Driver starts engine, and inlet manifold 3 and inlet manifold 2 form path, be stored in what is be heated in air accumulator 7
Air inlet, is entered in cylinder by inlet manifold 3 and inlet manifold 2.To ensure current path, vapour lock is avoided, so this Process Gas
Pump 10 is the state opened.After engine stabilizer is run, 16 control valve 14 of electronic control unit is opened, air pump 10 is closed,
Air inlet in air inlet pipe enters in cylinder through the second air intake branch 15, inlet manifold 3 and inlet manifold 2.Complete from cold start-up to
The transition of engine work state.
When cooling-water temperature sensor 22 detects that cooling water temperature is higher than design temperature, pass through control line electron control
Unit 16 processed sends signal, and electronic control unit 16 controls heater strip 17 to stop heating, while it is cold to control the action of three-way valve 20 to make
But water enters engine 1 by radiator 19.Completion reaches normal working temperature from cold start-up low-temperature cooling water to cooling water
Transition.
Claims (2)
- A kind of 1. applicable highland and severe cold environment diesel engine assisted cold start device, it is characterised in that：Along airintake direction in air inlet pipe On be sequentially arranged with air cleaner and check valve, the import of the air inlet pipe is connected with surrounding air, the air inlet pipe Outlet and the import of the first air intake branch and the inlet communication of the second air intake branch, first air intake branch is along air inlet side To air pump and air accumulator is sequentially connected, close to a diameter of reducing expanding reach of the first air intake branch of air accumulator entrance, in institute Installation having heaters in the entrance tube chamber for the reducing expanding reach stated, flows in the tube chamber of reducing expanding reach and perpendicular to gas Direction is provided with infrared coating strainer, and heater alignment infrared coating strainer is set, and the heater is used for red External coating strainer heats, and is wrapped with insulating layer in the air accumulator, the air inlet crossed for Heat preservation, in the second air inlet branch The entrance of pipe is provided with valve, and intake air temperature sensor, the first air intake branch are provided with second air intake branch Outlet with the second air intake branch is connected with inlet manifold jointly, and the inlet manifold is divided into multiple inlet manifold and engine The connection of each cylinder, provide air inlet for each cylinder of engine, the outlet of the cooling duct in engine cylinder body by cooling water channel according to The secondary import for connecting cooling water tank, water pump, three-way valve, radiator and cooling duct, cooling-water temperature sensor are installed on to enter and send out Cooling water terminal before motivation, for detecting the temperature of cooling water, a valve port of the three-way valve passes through branch pipe and heat dissipation Cooling water channel between the outlet of device and cooling duct import is connected, and is provided with heater strip in the cooling water tank, is used for Heat cooling water during cold start-up, electronic control unit respectively by control line and intake air temperature sensor, heater, air pump, Valve, heater strip, three-way valve and cooling-water temperature sensor are connected.
- 2. a kind of control method for being applicable in highland and severe cold environment diesel engine assisted cold start device using claim 1, including Following steps：Before cold start-up, driver's electron control unit sends a preparation enabling signal, electronic control unit control heating Device is opened, air pump is opened, check valve is opened and valve is opened, and infrared coating strainer absorbs the heat that heater gives off, in gas Under the air-extraction function of pump, air inlet passes sequentially through air cleaner, check valve, air pump and infrared coating strainer, and air inlet is by red Be heated during external coating strainer, the air inlet after heating is subsequently into air accumulator, and engine is also not actuated at this time, inlet manifold and into Gas manifold does not form path, enters the second air intake branch after the air-flow outflow in air accumulator, then from the outflow meeting of the second air intake branch Pumping with air pump returns to air accumulator, is formed into a loop to heat air inlet repeatedly；At the same time, before cold start-up, driver is to electricity After sub-control unit sends a preparation enabling signal, electronic control unit control heater strip is begun to warm up, and water pump is opened and controlled The valve port all the way that three-way valve processed leads to branch pipe is opened, and cooling water is directly entered engine without radiator after water pump；When intake air temperature sensor detects that intake air temperature is higher than design temperature, sent by control line electron control unit Signal, electronic control unit control heater are closed, and air pump is kept it turned on, and check valve stays open, and valve is closed, and driver starts Engine, inlet manifold and inlet manifold form path, are stored in the air inlet being heated in air accumulator, by inlet manifold and into Gas manifold enters in cylinder；After engine stabilizer is run, electronic control unit control valve is opened, air pump is closed, air inlet pipe In air inlet through the second air intake branch, inlet manifold and inlet manifold enter cylinder in, complete normal from cold start-up to engine The transition of working status；When cooling-water temperature sensor detects that cooling water temperature is higher than design temperature, pass through control line electron control unit Signal is sent, electronic control unit control heater strip stops heating, while controls three-dimensional valve events cooling water is passed through radiator Into engine, the transition for reaching normal working temperature from cold start-up low-temperature cooling water to cooling water is completed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248116.7A CN108035831B (en) | 2017-11-28 | 2017-11-28 | A kind of applicable highland and severe cold environment diesel engine assisted cold start device and control method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711248116.7A CN108035831B (en) | 2017-11-28 | 2017-11-28 | A kind of applicable highland and severe cold environment diesel engine assisted cold start device and control method |
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| CN108035831B CN108035831B (en) | 2019-05-17 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108730094A (en) * | 2018-06-28 | 2018-11-02 | 潍柴动力股份有限公司 | A kind of auxiliary starter control system and method under low temperature in plateau environment |
| CN110761931A (en) * | 2019-10-30 | 2020-02-07 | 湖南大学 | Improve holding water tank of engine cold start performance |
| 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 |
| CN114854569A (en) * | 2022-06-17 | 2022-08-05 | 南京溯远基因科技有限公司 | Thermal cycling device and PCR instrument |
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| CN104832346A (en) * | 2015-05-12 | 2015-08-12 | 广西玉柴机器股份有限公司 | Auxiliary device for highland cold boot of electric control engine |
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| EP1229240A2 (en) * | 2001-02-05 | 2002-08-07 | Beru AG | Automotive diesel engine cold starting arrangement |
| EP1752656A2 (en) * | 2005-07-19 | 2007-02-14 | Valeo Equipements Electriques Moteur | Starting device for internal combustion engine, in particular for diesel engine without glowplugs |
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| CN108730094A (en) * | 2018-06-28 | 2018-11-02 | 潍柴动力股份有限公司 | A kind of auxiliary starter control system and method under low temperature in plateau environment |
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| CN110761931A (en) * | 2019-10-30 | 2020-02-07 | 湖南大学 | Improve holding water tank of engine cold start performance |
| 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 |
| CN114854569A (en) * | 2022-06-17 | 2022-08-05 | 南京溯远基因科技有限公司 | Thermal cycling device and PCR instrument |
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|---|---|
| CN108035831B (en) | 2019-05-17 |
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