CN109356713A - The method for improving engine plateau cold-starting ability - Google Patents
The method for improving engine plateau cold-starting ability Download PDFInfo
- Publication number
- CN109356713A CN109356713A CN201811504136.0A CN201811504136A CN109356713A CN 109356713 A CN109356713 A CN 109356713A CN 201811504136 A CN201811504136 A CN 201811504136A CN 109356713 A CN109356713 A CN 109356713A
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- China
- Prior art keywords
- engine
- starting
- plateau
- improving
- automatically controlled
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B39/00—Component parts, details, or accessories relating to, driven charging or scavenging pumps, not provided for in groups F02B33/00 - F02B37/00
- F02B39/02—Drives of pumps; Varying pump drive gear ratio
- F02B39/08—Non-mechanical drives, e.g. fluid drives having variable gear ratio
- F02B39/10—Non-mechanical drives, e.g. fluid drives having variable gear ratio electric
-
- 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
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention discloses a kind of methods for improving engine plateau cold-starting ability.The method of the raising engine plateau cold-starting ability inflates pressurization in advance by plenum component before starter rotation in engine air inlet tube, when so that engine starter starting support turn starting, the admission pressure that inlet manifold is sent in each cylinder is by reaching the state close with Plain after pressurization, to improve starting performance when low temperature in plateau, after engine start success, plenum component stops working.The method of the raising engine plateau cold-starting ability installs one additional before the inlet manifold of engine inflates supercharging device, so that the admission pressure that inlet manifold is sent in each cylinder can reach the state close with Plain after passing through pressurization, thus starting performance when improving low temperature in plateau.
Description
Technical field
The present invention relates to engine arts, especially with regard to a kind of method for improving engine plateau cold-starting ability.
Background technique
Usual diesel fuel engine at present, under High aititude low temperature environment, since altitude environment air pressure is low, oxygen content is low, such as
In height above sea level 5000m, air pressure and oxygen content are almost the half in Plain, and the starting capability of engine, are started with diesel engine
Process cylinder internal pressure contracting temperature and oxygen density are closely related.High aititude air pressure is low, and engine is identical to hold in the palm cylinder pressure when walking around speed
Almost be reduced to the half in Plain, cause engine in the minimum cylinder in low temperature compression temperature it is low, diesel-fuel ignition item is not achieved
Part；The fuel oil completely burned acting that oxygen content is low to be also insufficient to allow penetrating, burning deteriorate, engine show as fail to start,
The problems such as engine operational stability difference is easy flame-out after hard-to-start, or starting, and over-emitting black exhaust is serious.Therefore it is managed from the burning of engine
It is analyzed by aspect, needs to find a kind of method, improved under low temperature in plateau environment, oxygen density in compression temperature or cylinder, makes in cylinder
The fuel oil of penetrating preferably burns and does work, and starts engine smoothly under low temperature in plateau environment.
To solve the above problems, on plateau engine starting, general way is exactly on engine air inlet tube at present
The method that boiler heater riser engine bulk temperature is filled in installation preheating, vehicle promotes the starting capability of engine, this method
Core is heating intake air temperature or engine cooling water jacket temperature, improves and compresses finishing temperature in cylinder, can solve to a certain extent
Certainly and the plateau starting performance of engine is made up, but if to reach and starting performance identical under Plain, there are also some gaps.
The information disclosed in the background technology section is intended only to increase the understanding to general background of the invention, without answering
When being considered as recognizing or imply that the information constitutes the prior art already known to those of ordinary skill in the art in any form.
Summary of the invention
The purpose of the present invention is to provide a kind of methods of the raising engine plateau cold-starting ability of advantages of simple, this is mentioned
The admission pressure that the method for high engine plateau cold-starting ability is sent to inlet manifold in each cylinder passes through reachable after pressurization
To the state close with Plain, thus starting performance when improving low temperature in plateau.
To achieve the above object, it the present invention provides a kind of method for improving engine plateau cold-starting ability, starts
Pressurization is inflated in advance toward engine air inlet tube in by plenum component before machine rotation, so that engine starter starts to hold in the palm turn
When starting, the admission pressure that inlet manifold is sent in each cylinder is by reaching the state close with Plain after pressurization, to improve
Starting performance when low temperature in plateau, after engine start success, plenum component stops working.
In a preferred embodiment, plenum component includes: automatically controlled pump-up device and electronic control unit, this is automatically controlled to beat
The outlet side of device of air is connected to the engine intake manifold；The electronic control unit and the automatically controlled pump-up device control connect
It connecing, the electronic control unit energy automatic identification engine, which is shut down, prestart prepares, starts support turns whole process, before ready to start,
Electronic control unit issues control instruction automatically opens automatically controlled pump-up device, and start in advance before starter rotation toward engine into
Intratracheally inflate.
In a preferred embodiment, the inlet end of automatically controlled pump-up device is provided with air cleaner.
In a preferred embodiment, electronic control unit issues control instruction automatically opens automatically controlled pump-up device, and
3-5s starts to inflate in engine air inlet tube in advance before starter rotation.
In a preferred embodiment, the pressure of inflating of automatically controlled pump-up device is 1.0-2.0 standard atmospheric pressure.
Compared with prior art, the method according to the present invention for improving engine plateau cold-starting ability has following beneficial
Effect: the method for the raising engine plateau cold-starting ability installed additional before the inlet manifold of engine one inflate pressurization dress
Set, inflate in engine air inlet tube so that the admission pressure that is sent in each cylinder of inlet manifold by can reach after pressurization with
The close state in Plain, thus starting performance when improving low temperature in plateau.
Detailed description of the invention
Fig. 1 is the structural representation of the method for raising engine plateau cold-starting ability according to an embodiment of the present invention
Figure.
Specific embodiment
With reference to the accompanying drawing, specific embodiments of the present invention will be described in detail, it is to be understood that guarantor of the invention
Shield range is not limited by the specific implementation.
Unless otherwise explicitly stated, otherwise in entire disclosure and claims, term " includes " or its change
Changing such as "comprising" or " including " etc. will be understood to comprise stated element or component, and not exclude other members
Part or other component parts.
As shown in Figure 1, the specific structure of engine plateau cold-start system includes: diesel engine 1, engine charge discrimination
Pipe 3, engine intake manifold 4 and plenum component, wherein plenum component is laid on engine intake manifold 4, energy
Automatic identification engine, which is shut down, prestart prepares, starts support turns whole process, and before ready to start, plenum component is being risen
Start to inflate in engine air inlet tube in advance before motivation rotation, when engine starter, which starts support, to be turned to start, inlet manifold
The admission pressure being sent in each cylinder is by can reach the state close with Plain after pressurization, thus rising when improving low temperature in plateau
Dynamic performance.
Specifically, diesel engine 1 is burning diesel oil to obtain exergonic engine.The work of diesel engine
For process in fact as petrol engine, each working cycles also undergo four air inlet, compression, acting, exhaust strokes.Diesel oil
What machine sucked in suction stroke is pure air.In compression travel close to when ending, oil pressure is increased to by diesel oil through injection pump
10MPa or more sprays into cylinder by fuel injector, mixes within a very short time with compressed high temperature air, form flammable mixing
Gas.Since diesel engine compression ratio is high (generally 16-22), so cylinder air pressure is up to 3.5- when compression ends
4.5MPa, while temperature is up to 750-1000K (and the mixture pressure of gasoline engine at this moment can be for 0.6-1.2MPa, and temperature reaches
600-700K), the autoignition temperature of diesel oil is substantially exceeded.Therefore diesel oil mixes with air within a very short time after spraying into cylinder
It is soon voluntarily under fire and burns afterwards.Air pressure in cylinder rapidly rises to 6-9MPa, and temperature is also raised to 2000-2500K.In high pressure
Under gas push, piston moves downward and with dynamic crankshaft rotation and work done, exhaust gas are equally discharged into atmosphere through exhaust pipe.
Motor intake manifold 3 is laid in the air inlet side of diesel engine 1, and one end is each with diesel engine 1 respectively
Cylinder connection, the other end are connected to engine intake manifold 4, and fresh air passes through engine intake manifold 4 and engine charge discrimination
Each cylinder that pipe 3 enters diesel engine 1 participates in work by combustion.
Plenum component includes: automatically controlled pump-up device 5, air cleaner 6 and electronic control unit 7.Wherein, automatically controlled dress of inflating
It sets 5 outlet side to be connected to engine intake manifold 4, when plateau cold start inflates in engine air inlet tube, so that engine
The admission pressure that inlet manifold is sent in each cylinder is by can reach the state close with Plain after pressurization, so that it is low to improve plateau
Starting performance when warm.
Electronic control unit 7 and the control of automatically controlled pump-up device 5 connect, and automatically controlled pump-up device 5 is controlled by electronic control unit 7, automatically controlled
7 energy automatic identification engine of unit, which is shut down, prestart prepares, starts support turns whole process, and before ready to start, control unit is certainly
The dynamic control instruction that issues makes to inflate supercharging device unlatching, and starts to beat in engine air inlet tube in advance before starter rotation
Gas, when engine starter start support turn start when, inlet manifold be sent to the admission pressure in each cylinder by pressurization after it is reachable
To the state close with Plain, thus starting performance when improving low temperature in plateau.
Preferably, the inlet end of automatically controlled pump-up device 5 is provided with air cleaner 6.
The method according to the preferred embodiment of the present invention for improving engine plateau cold-starting ability be engine into
Install a plenum component before gas general pipeline additional, which has electronic control unit, electronic control unit energy automatic identification hair
Motivation, which is shut down, prestart prepares, starts support turns whole process, and before ready to start, electronic control unit issues control instruction automatically to be made
Plenum component is opened, and 3-5s starts to inflate in engine air inlet tube in advance before starter rotation, inflates pressure
It can be adjusted flexibly automatically according to current environmental pressure, generally 1.0-2.0 standard atmospheric pressure, when engine starter is opened
When the support that begins turns to start, the admission pressure that inlet manifold is sent in each cylinder can reach the state close with Plain after passing through pressurization,
To improve starting performance when low temperature in plateau, after engine start success, control unit can allow pump-up device to stop work
Make, required electric energy is inflated in saving.Compared with the low temperature in plateau of traditional common starts measure, this method can make under altitude environment
It is close when air-suction state when starting and Plain, so that engine low temperature in plateau starting capability is improved, it is high after the device
The starting that former cold-starting ability can reach Plain is horizontal.
To sum up, the method for the raising engine plateau cold-starting ability installs one additional before the inlet manifold of engine and inflates
Supercharging device is inflated in engine air inlet tube so that inlet manifold be sent to the admission pressure in each cylinder by pressurization after can
Reach the state close with Plain, thus starting performance when improving low temperature in plateau.
The aforementioned description to specific exemplary embodiment of the invention is in order to illustrate and illustration purpose.These descriptions
It is not wishing to limit the invention to disclosed precise forms, and it will be apparent that according to the above instruction, can much be changed
And variation.The purpose of selecting and describing the exemplary embodiment is that explaining specific principle of the invention and its actually answering
With so that those skilled in the art can be realized and utilize a variety of different exemplary implementation schemes of the invention and
Various chooses and changes.The scope of the present invention is intended to be limited by claims and its equivalents.
Claims (5)
1. a kind of method for improving engine plateau cold-starting ability, which is characterized in that increased before starter rotation by air inlet
Pressure component inflates pressurization in advance toward engine air inlet tube in, and when so that engine starter starting support turn starting, inlet manifold is sent
Enter to the admission pressure in each cylinder by reaching the state close with Plain after pressurization, thus startability when improving low temperature in plateau
Can, after engine start success, plenum component stops working.
2. improving the method for engine plateau cold-starting ability as described in claim 1, which is characterized in that the plenum
Component includes: automatically controlled pump-up device and electronic control unit, and the outlet side of the automatically controlled pump-up device and the engine intake manifold connect
It is logical；The electronic control unit and the automatically controlled pump-up device control connect, and the electronic control unit energy automatic identification engine is shut down, risen
Preparation, starting support turn whole process before dynamic, and before ready to start, electronic control unit issues control instruction automatically makes automatically controlled pump-up device
It opens, and starts to inflate in engine air inlet tube in advance before starter rotation.
3. improving the method for engine plateau cold-starting ability as claimed in claim 2, which is characterized in that described automatically controlled to inflate
The inlet end of device is provided with air cleaner.
4. improving the method for engine plateau cold-starting ability as claimed in claim 3, which is characterized in that the electronic control unit
The automatic control instruction that issues opens automatically controlled pump-up device, and 3-5s starts toward engine air inlet tube in advance before starter rotation
Inside inflate.
5. improving the method for engine plateau cold-starting ability as claimed in claim 4, which is characterized in that described automatically controlled to inflate
The pressure of inflating of device is 1.0-2.0 standard atmospheric pressure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504136.0A CN109356713A (en) | 2018-12-10 | 2018-12-10 | The method for improving engine plateau cold-starting ability |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811504136.0A CN109356713A (en) | 2018-12-10 | 2018-12-10 | The method for improving engine plateau cold-starting ability |
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| Publication Number | Publication Date |
|---|---|
| CN109356713A true CN109356713A (en) | 2019-02-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811504136.0A Pending CN109356713A (en) | 2018-12-10 | 2018-12-10 | The method for improving engine plateau cold-starting ability |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608839A (en) * | 2020-06-16 | 2020-09-01 | 成都航利航空科技有限责任公司 | System and method for plateau starting of engine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446228A (en) * | 2008-12-26 | 2009-06-03 | 泰豪科技股份有限公司 | Electric and turbo double-intake supercharging device for engine |
| CN105804896A (en) * | 2014-12-31 | 2016-07-27 | 上海擎掣汽车电子有限公司 | Engine and air inlet system thereof |
| CN106285917A (en) * | 2016-08-05 | 2017-01-04 | 同济大学 | A kind of diesel engine starting aid system being applicable to high altitude localities and method |
-
2018
- 2018-12-10 CN CN201811504136.0A patent/CN109356713A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101446228A (en) * | 2008-12-26 | 2009-06-03 | 泰豪科技股份有限公司 | Electric and turbo double-intake supercharging device for engine |
| CN105804896A (en) * | 2014-12-31 | 2016-07-27 | 上海擎掣汽车电子有限公司 | Engine and air inlet system thereof |
| CN106285917A (en) * | 2016-08-05 | 2017-01-04 | 同济大学 | A kind of diesel engine starting aid system being applicable to high altitude localities and method |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111608839A (en) * | 2020-06-16 | 2020-09-01 | 成都航利航空科技有限责任公司 | System and method for plateau starting of engine |
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Application publication date: 20190219 |