CN209083443U - The plateau cold-start system of engine - Google Patents
The plateau cold-start system of engine Download PDFInfo
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- CN209083443U CN209083443U CN201822076355.5U CN201822076355U CN209083443U CN 209083443 U CN209083443 U CN 209083443U CN 201822076355 U CN201822076355 U CN 201822076355U CN 209083443 U CN209083443 U CN 209083443U
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- intake manifold
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- plateau
- controlled pump
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Abstract
The utility model discloses a kind of plateau cold-start systems of engine.The plateau cold-start system of the engine includes: diesel engine；Motor intake manifold, is laid in the air inlet side of the diesel engine, and one end of the motor intake manifold is connected to each cylinder of diesel engine respectively；Engine intake manifold is connected to the other end of the motor intake manifold；Automatically controlled pump-up device, outlet side are connected to the engine intake manifold；And electronic control unit, it is connected with the automatically controlled pump-up device control.The plateau cold-start system of the engine 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 utility model is about engine art, especially with regard to a kind of plateau cold-start system of engine.
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 the general background of the utility model, and
It is not construed as recognizing or implying in any form that information composition is already known to those of ordinary skill in the art existing
Technology.
Utility model content
The purpose of this utility model is to provide a kind of plateau cold-start system of simple and reasonable engine, the hairs
The admission pressure that the plateau cold-start system of motivation is sent to inlet manifold in each cylinder can reach after passing through pressurization and Plain
Close state, thus starting performance when improving low temperature in plateau.
To achieve the above object, the utility model provides a kind of plateau cold-start system of engine, comprising: diesel oil hair
Motivation；Motor intake manifold is laid in the air inlet side of the diesel engine, one end difference of the motor intake manifold
It is connected to each cylinder of diesel engine；Engine intake manifold is connected to the other end of the motor intake manifold；It is automatically controlled
Pump-up device, outlet side are connected to the engine intake manifold；And electronic control unit, with the automatically controlled pump-up device control
System connection, the electronic control unit energy automatic identification engine, which is shut down, prestart prepares, starts support turns whole process, when preparing
Before dynamic, electronic control unit issues control instruction automatically opens automatically controlled pump-up device, and starts in advance before starter rotation toward hair
It inflates in motivation air inlet pipe.
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.
In a preferred embodiment, diesel engine is four cylinder engine.
Compared with prior art, the plateau cold-start system of engine according to the present utility model has following beneficial to effect
Fruit: the plateau cold-start system of the engine installs one additional before the inlet manifold of engine inflates supercharging device, toward engine
It inflates in air inlet pipe, so that the admission pressure that inlet manifold is sent in each cylinder is by can reach the shape close with Plain after pressurization
State, thus starting performance when improving low temperature in plateau.
Detailed description of the invention
Fig. 1 is the structural schematic diagram according to the plateau cold-start system of the engine of one embodiment of the utility model.
Specific embodiment
With reference to the accompanying drawing, specific embodiment of the present utility model is described in detail, it is to be understood that this is practical
Novel protection scope 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.
To solve the above problems, the application thinks by serious analysis, under low temperature in plateau environment, in Plain engine into
While gas preheating step, supplement or increase admission pressure in engine air inlet tube, air inlet overpressure is connect when making to start
Pressure when nearly Plain.Starting i.e. under altitude environment can be obtained and put down in such a way that set of system carries out plenum
Former close starting conditions, the plateau starting performance of engine can be obviously improved, reach or better than Plain starting performance.
As shown in Figure 1, according to the specific knot of the plateau cold-start system of the engine of the preferred embodiments of the present invention
Structure includes: diesel engine 1, motor intake manifold 3, engine intake manifold 4, automatically controlled pump-up device 5, air cleaner 6
With electronic control unit 7.Wherein, automatically controlled pump-up device 5 is laid on engine intake manifold 4, is controlled by electronic control unit 7, automatically controlled
Unit energy automatic identification engine, 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.
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.
The outlet side of automatically controlled pump-up device 5 is connected to engine intake manifold 4, toward engine air inlet tube when the cold start of plateau
It inside inflates, so that the admission pressure that engine intake manifold is sent in each cylinder is by can reach the shape close with Plain after pressurization
State, thus starting performance when improving low temperature in plateau.
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 core of the working principle of the plateau cold-start system of the engine is to install one additional before the inlet manifold of engine
A to inflate supercharging device (automatically controlled pump-up device 5), this is inflated supercharging device and is controlled by electronic control unit, electronic control unit energy automatic identification
Engine, which is shut down, prestart prepares, starts support turns whole process, and before ready to start, electronic control unit issues control instruction automatically
Make to inflate supercharging device unlatching, and 3-5s starts to inflate in engine air inlet tube in advance before starter rotation, air pressure
Power can be adjusted flexibly automatically according to current environmental pressure, generally 1.0-2.0 standard atmospheric pressure, work as engine starter
When starting support turn starting, the admission pressure that inlet manifold is sent in each cylinder is by can reach the shape close with Plain after pressurization
State, thus starting performance when improving low temperature in plateau, after engine start success, control unit can allow pump-up device to stop
Required electric energy is inflated in work, saving.Compared with the low temperature in plateau of traditional common starts measure, this method can make altitude environment
It is close when air-suction state when lower starting and Plain, so that engine low temperature in plateau starting capability is improved, after the device,
The starting that low temperature in plateau starting capability can reach Plain is horizontal.
To sum up, the plateau cold-start system of the engine 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.
The description of the aforementioned specific exemplary embodiment to the utility model is in order to illustrate and illustration purpose.These
Description is not wishing to for the utility model to be limited to disclosed precise forms, and it will be apparent that according to the above instruction, can carry out
It is many to change and change.The purpose of selecting and describing the exemplary embodiment is that explaining the specific principle of the utility model
And its practical application, so that those skilled in the art can be realized and utilize a variety of different examples of the utility model
Property embodiment and various chooses and changes.The scope of the utility model is intended to by claims and its waits similar shapes
Formula is limited.
Claims (5)
1. a kind of plateau cold-start system of engine characterized by comprising
Diesel engine；
Motor intake manifold is laid in the air inlet side of the diesel engine, one end difference of the motor intake manifold
It is connected to each cylinder of diesel engine；
Engine intake manifold is connected to the other end of the motor intake manifold；
Automatically controlled pump-up device, outlet side are connected to the engine intake manifold；And
Electronic control unit is connected with the automatically controlled pump-up device control, 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.
2. the plateau cold-start system of engine as described in claim 1, which is characterized in that the automatically controlled pump-up device into
Gas end is provided with air cleaner.
3. the plateau cold-start system of engine as described in claim 1, which is characterized in that the electronic control unit issues automatically
Control instruction opens automatically controlled pump-up device, and 3-5s starts to inflate in engine air inlet tube in advance before starter rotation.
4. the plateau cold-start system of engine as claimed in claim 3, which is characterized in that the automatically controlled pump-up device is beaten
Atmospheric pressure is 1.0-2.0 standard atmospheric pressure.
5. the plateau cold-start system of engine as described in claim 1, which is characterized in that the diesel engine is four cylinders
Engine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822076355.5U CN209083443U (en) | 2018-12-10 | 2018-12-10 | The plateau cold-start system of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822076355.5U CN209083443U (en) | 2018-12-10 | 2018-12-10 | The plateau cold-start system of engine |
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| Publication Number | Publication Date |
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| CN209083443U true CN209083443U (en) | 2019-07-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201822076355.5U Active CN209083443U (en) | 2018-12-10 | 2018-12-10 | The plateau cold-start system of engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404179A (en) * | 2018-12-10 | 2019-03-01 | 广西玉柴机器股份有限公司 | The plateau cold-start system of engine |
| CN111119271A (en) * | 2019-12-28 | 2020-05-08 | 潍柴动力股份有限公司 | Device and method for improving plateau capacity of excavator based on energy recovery |
-
2018
- 2018-12-10 CN CN201822076355.5U patent/CN209083443U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109404179A (en) * | 2018-12-10 | 2019-03-01 | 广西玉柴机器股份有限公司 | The plateau cold-start system of engine |
| CN111119271A (en) * | 2019-12-28 | 2020-05-08 | 潍柴动力股份有限公司 | Device and method for improving plateau capacity of excavator based on energy recovery |
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