CN104847543B - Engine low-temperature-start gas heater and control method thereof - Google Patents
Engine low-temperature-start gas heater and control method thereof Download PDFInfo
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- CN104847543B CN104847543B CN201510260903.8A CN201510260903A CN104847543B CN 104847543 B CN104847543 B CN 104847543B CN 201510260903 A CN201510260903 A CN 201510260903A CN 104847543 B CN104847543 B CN 104847543B
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/30—Use of alternative fuels, e.g. biofuels
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Abstract
The invention discloses an engine low-temperature-start gas heater and a control method thereof. The engine low-temperature-start gas heater comprises a combustion chamber. A gas pump and an air pump are arranged on the external portion of the combustion chamber and are connected with the combustion chamber respectively by a gas throttle valve and an air throttle valve, an air circulation device is arranged on the outer side of the combustion chamber, a heat exchange water pipe is arranged in the combustion chamber, a flow valve is arranged at a water inlet of the heat exchange water pipe, and temperature sensors are arranged at the water inlet and the water outlet of the heat exchange water pipe and connected with a controller. The temperature sensors are connected with the gas pump, the air pump, the gas throttle valve, the air throttle valve and the flow valve respectively by the controller and control gas, air, liquid and switching. By the aid of the controller, the engine low-temperature-start gas heater has the advantages of controllability in gas, air and switching, fast ignition, low heat loss, high heat energy conversion rate and energy consumption reduction and the like.
Description
Technical field
The present invention relates to vehicle engine preheating technical field, and in particular to a kind of engine cold-starting combustion heater
And its control method.
Background technology
In the north and the winter of western plateau band, because ambient temperature is very low, engine start is made a big impact.
In order that electromotor quickly starts under the cryogenic conditions of different temperatures, it is necessary to which installing improves the auxiliary device for starting, to promote
That enters fuel makes full use of and reduces the resistance of start, and fuel heater is used as a kind of universal general heater, such as Chinese invention
A kind of automobile engine low-temperature startup device is described in patent application 201410625694.8, by the restriction to cold air,
A kind of device for facilitating engine cold-starting is provided, but because winter temperature is low, fuel-viscosity variation increases, and resistance of start square increases
Greatly, there is speed of ignition slow, the problem of heat energy transformation time length, simultaneously as continuous improvement of the people to environmental requirement now,
Both at home and abroad oil price rises steadily, and as an alternative product are also increasingly subject to increasing safe, reliable, environmentally friendly type gas energy
Popular generally acceptance, now, has more motor vehicles to be used as the energy with combustion gas replacing fuel oil to select, but is using
Gas quantity fails to change as ambient temperature changes in combustion heater used in journey, and disconnection can not be timely with conducting
Manipulation, causes energy waste, while heat exchange efficiency is low, it is also inevitably to ask in cold-starting heating process that thermal losses is excessive
Topic.
The content of the invention
The present invention provides a kind of engine cold-starting combustion heater and its control method, it is therefore an objective to solves electromotor and exists
Quickly start and adjust the problem of gas quantity and heat exchanging liquid amount after starting under cryogenic conditions, there is provided a kind of speed of ignition is fast,
Thermal losses is little, and thermal energy conversion rate is high, energy efficient, at different temperatures gas quantity and burnt gas switch in adjustable heater, together
When also dependent on the different temperature difference adjust heat exchanging liquid amount heater.
What the present invention was realized in：
A kind of engine cold-starting combustion heater, including：
Combustor, is provided with air pump and gas pump outside it, respectively by air control shutter and gas throttle valve and institute
State combustor to be connected, it is indoor that air Jing air control shutters are sent into burning by the air pump, the gas pump is by combustion gas Jing combustion gas
Choke valve is sent to burning interior, and the gaseous mixture that combustion gas is formed with air is burnt in burning interior, the gas Jing after burning
Burning is discharged into by air vent outdoor；
Liquid flow device, it includes at least one heat exchanging water pipe and engine water jacket, and the heat exchanging water pipe is arranged on combustion
Chamber interior is burnt, for carrying out heat exchange with air-flow in burning interior, the engine water is set on electromotor outside, by water
Pumping action, the heat exchanging water pipe is connected with engine water jacket and constitutes closed cycle system；
Air circulating device, it is arranged on combustor outside, including warm air outlet and sky after adding hot air inlet, heating
Gas fan, pre-add hot-air is acted on by the air fan suction, from plus hot air inlet flow into by the outside of combustor, with
Combustor is carried out after heat exchange, and warm air outlet flows out from after heating；
Temperature sensor, it is arranged on heat exchanging water pipe water inlet and heat exchanging water pipe's water outlet, enters for measuring water pipe
The mouth of a river and water pipe outlet temperature of liquid；
Flow valve, it is connected with heat exchanging water pipe's water inlet, for switching the heat exchanging water pipe；
Controller, it is connected with the temperature sensor, according to heat exchanging water pipe's water inlet temperature of liquid, controls combustion gas
Amount, air capacity and the gas pump, the switch of air pump, according to heat exchanging water pipe's intake-outlet temperature of liquid, control flow
The switch of valve, according to heat exchanging water pipe's intake-outlet temperature of liquid the inflow of water pump is controlled；
Wherein, the gas throttle valve, air control shutter and flow valve composition valving, itself and the controller phase
Even, the gas pump, air pump and water pump are connected with the controller.
Preferably, heat exchange sheet structure is provided with the air circulating device, for increasing combustor with the air
The heat exchange of pre-add hot-air in circulation device.
Preferably, there are inner clip Rotating fields, for filling anti-icing fluid in the heat exchanging water pipe.
Preferably, the burning interior is provided with deflector, and it is used to for gaseous mixture to produce backflow, contributes to gaseous mixture
Further mixing, promotes fully burning.
Preferably, flame detector is installed in the burning inside, for detecting gas flame.
Preferably, the indoor setting forced exhaust valve of the burning, it is used to be forced when combustor toxic gas are excessive
Open aerofluxuss.
Preferably, warm air outlet is connected with driver's cabin after the heating, for driver's cabin heating demands.
A kind of control method of engine cold-starting combustion heater, by described controller regulating gas choke valve
Gas flow rate Q0, air control shutter air velocity Q1And heat exchanging water pipe water inlet pipe number n, pass through
Calculate, wherein T0Engine water jacket assigned temperature when being the engine start, T1It is heater water jacket water inlet temperature of liquid,
CmIt is specific heat of liquid in the liquid flow device, m is liquid gross mass in liquid flow device, ΔcH0It is fuel gas buring
Heat, η is the transformation efficiency that combustion chamber heat can be converted into liquid heat energy in water jacket, and ρ is combustion gas density, t0It is that the electromotor reaches
The specified time of engine water jacket assigned temperature during startup, A is constant；By Q1=B × Q0Calculate, when required combustion gas is filled
Air velocity during divided combustion, B is constant；Adjust water pipe water inlet pipe number n to adjust as follows：
Step one：WhenWhen, n=1；
Step 2：WhenWhen, n=2；
Step 3：WhenWhen, n=3；
……
Step N：N=N, now water inlet pipe is all open, wherein T2It is
Heat exchanging water pipe's outlet temperature of liquid, N is the water-main number of the heat exchanging water pipe.
Preferably, T is worked as1Reach T0When, the controller closes the gas pump and air pump, works as T1Not up to T0When,
The controller opens the gas pump and air pump, wherein T0Engine water jacket assigned temperature when being engine start.
Preferably, the water feeding of water pump amount is adjusted in such a way：Step one：When 0≤| T2-T1| it is described during ＜ 35
Water feeding of water pump amount adjusts low-grade to inflow；Step 2：When 35≤| T2-T1| during ＜ 65, the water feeding of water pump amount is adjusted to water inlet
Amount is high-grade.
Description of the drawings
Fig. 1 is the structural representation of engine cold-starting combustion heater of the present invention.
Fig. 2 is the flow chart of engine cold-starting combustion heater control method of the present invention.
Specific embodiment
Below in conjunction with the accompanying drawings the present invention is described in further detail, to make those skilled in the art with reference to description text
Word can be implemented according to this.
It should be appreciated that it is used herein such as " have ", "comprising" and " including " term do not allot one or many
The presence or addition of individual other elements or its combination.
Fig. 1 shows a kind of way of realization of the invention, including：Heater gas pump 161 drives in motor
Under, combustion gas Jing gas throttle valves 151 are drawn in the front end mixing chamber 111 of combustor, while in the presence of air pump 162,
Air Jing air control shutters 152 are drawn in mixing chamber 111, combustion gas with air to be combusted after mixing chamber 111 is mixed homogeneously, shape
Into gaseous mixture be fed in combustor 110 by combustion gas mouth 113 along air-flow, through igniter plug 114 in the combustor 110
Igniting, after fully burning in combustor 110, the waste gas of generation is discharged into burning outdoor, mixture combustion by air vent 112
The heat transfer for producing afterwards arranges air circulating device 120, air circulating device 120 on chamber wall, on the outside of combustor
Including warm air outlet 122 and air fan 123 after pre-add hot air inlet 121, heating, make in the suction of air fan 123
With under, air Jing pre-add hot air inlet 121 is entered in air circulating device 120, through chamber wall heat effect, is carried out
Heat exchange elevate the temperature after Jing being discharged by hot air outlet after heating 122, combustion chamber is provided with least one heat exchange
Water pipe 131, liquid passes through the heat effect with burning Indoor Thermal air-flow in heat exchanging water pipe 131, after carrying out heat exchange temperature rising
Flow out via the outlet pipe of hot-water line 131, heat exchanging water pipe is connected with the water inlet of engine water jacket 132, enters into engine water jacket 132
Interior liquid carries out heat exchange with engine body, makes electromotor consistent heat up, and the outlet pipeline of engine water jacket 132 connects
Water pump 163, the liquid of the outflow in engine water jacket 132 is returned in heat exchanging water pipe 131 through the effect of water pump 163, is changed
Hot-water line 131 and engine water jacket 132 form circulation of fluid system.
Fig. 2 shows a kind of way of realization according to control method of the present invention, and its concrete operations flow process is as follows：
S210：Required temperature T is gathered by temperature sensor 1400,T1,T2, wherein T0Send out when being engine start
Motivation water jacket assigned temperature, T1It is heat exchanging water pipe's water inlet temperature of liquid, T2It is heat exchanging water pipe's outlet temperature of liquid.
S220、S221、S222：Arrange between temperature sensor 140 and gas pump 161, air pump 162 and water pump 163
Controller 150, is judged, as heat exchanging water pipe water inlet temperature of liquid T by the pre-set programs of controller 1501Reach engine start
When engine water jacket assigned temperature T0When, controller closes gas pump 161 and air pump 162, and now water pump works on, when changing
Hot-water line water inlet temperature of liquid T1Not up to engine start when engine water jacket assigned temperature T0When, controller control combustion gas
Pump 161 and air pump 162 are opened, and and so on circulate work, until electromotor normally starts, during cold-starting, according to heat exchange
Water pipe water inlet temperature T1, pass throughCalculate, wherein CmIt is the liquid flowing
Specific heat of liquid in device, m is liquid gross mass in liquid flow device, ΔcH0It is gas combustion heat, η is that combustion chamber heat can turn
Turn to the transformation efficiency of liquid heat energy in water jacket, ρ is combustion gas density, t0It is that engine water jacket refers to when the electromotor reaches startup
The specified time of constant temperature degree, A is constant；By Q1=B × Q0Calculate, the air velocity when required combustion gas is fully burnt,
Q1It is air velocity, B is constant；In the present embodiment, A=0.002, T0=35, t0=600, B=1.07.
S230：According to hot-water line water inlet temperature T1And heat exchanging water pipe outlet temperature of liquid T2, adjust water pipe water inlet pipe number
N is adjusted as follows：
Step one：WhenWhen, n=1；
Step 2：WhenWhen, n=2；
Step 3：WhenWhen, n=3；
……
Step N：N=N, now water inlet pipe is all open, and wherein N is institute
State the water-main number of heat exchanging water pipe, in the present embodiment, N=4.
S240、S250：When heat exchanging water pipe's outlet temperature of liquid and heat exchanging water pipe's water inlet temperature of liquid meet such as ShiShimonoseki
When being, controller is controlled to water feeding of water pump amount, when 0≤| T2-T1| during ＜ 35, the water feeding of water pump amount is adjusted to inflow
It is low-grade；When 35≤| T2-T1| during ＜ 65, the water feeding of water pump amount adjusts high-grade to inflow.
In another kind of embodiment, Inner Wall of Combustion Chamber arranges deflector 116, and gaseous mixture is after the mix homogeneously of mixing chamber 113
Into first-stage firing chamber 117, combustion air point First air realizes diffusion combustion with combustion gas mixing and secondary wind with combustion gas mixing, mixes
Close gas and backflow is produced by the effect of deflector 116, contribute to the further mixing of gas, then gaseous mixture Jing deflectors enter two
Level combustor 118 is further burnt so that gaseous mixture mixes evenly, and more fully thoroughly, the component also can be by more for burning
Hole slot is substituted.
In another kind of embodiment, heat exchange sheet structure 119 is provided with air circulating device, combustion gas flows through chamber wall
When, by heat exchange sheet most of heat transfer to air circulating device 120 heat in the indoor generation of burning can be made more preferable
Carry out heat exchange with air.Also, this mode is a kind of explanation of preferred embodiments, but is not limited thereto, implementing
The present invention is can to change its planform size etc. according to user demand.
In another kind of embodiment, inner clip Rotating fields 133 are provided with heat exchanging water pipe, can be used to fill anti-icing fluid inside it,
When low temperature is too low, can prevent because temperature crosses the problem that water in low flush tank freezes.
In another kind of embodiment, combustion chamber is mounted with flame detector 115, for detecting gas flame burning feelings
Condition, point piston is started when flame fails burning and is lighted a fire again.
In another kind of embodiment, the indoor setting forced exhaust valve 154 of burning, when combustor toxic gas are more than set
Enforced opening discharges toxic gas to outdoor of burning during the limitation put.
In another kind of embodiment, warm air outlet 122 is connected with driver's cabin after the heating of air circulating device, after heating
Warm air can be used to lift cabin temperature, meet the heating demands of driver's cabin in cold-starting vehicle.
Number of devices described herein and treatment scale are the explanations for simplifying the present invention.To heater in the present invention
Application, modifications and variations will be readily apparent to persons skilled in the art.
As described above, according to the present invention, due to the setting of the controller in heater, therefore with adjustable gas choke valve
And the switch of air control shutter, while being reached according to different temperatures and then gas quantity and heat exchanging liquid amount after heater starting
Speed of ignition is fast, and thermal losses is little, and thermal energy conversion rate is high, the effect of energy efficient.
Although embodiment of the present invention is disclosed as above, it is not restricted to listed in description and embodiment
With, it can be applied to completely various suitable the field of the invention, for those skilled in the art, can be easily
Other modification is realized, therefore under the general concept limited without departing substantially from claim and equivalency range, the present invention is not limited
In specific details and shown here as the legend with description.
Claims (3)
1. a kind of control method of engine cold-starting combustion heater, it is characterised in that be adjusted gas throttle valve combustion
Gas velocity Q0, air control shutter air velocity Q1And heat exchanging water pipe water inlet pipe number n, pass through
Calculate, wherein T0Engine water jacket assigned temperature when being engine start, T1It is heater water jacket water inlet temperature of liquid, CmIt is
Specific heat of liquid in liquid flow device, m is liquid gross mass in liquid flow device, ΔcH0It is gas combustion heat, η is burning
Room heat energy is converted into the transformation efficiency of liquid heat energy in water jacket, and ρ is combustion gas density, t0It is engine water when electromotor reaches startup
The specified time of set assigned temperature, A is constant, and e is the truth of a matter of natural logrithm；By Q1=B × Q0Calculate, when required combustion
Air velocity when gas fully burns, B is constant；Adjust heat exchanging water pipe water inlet pipe number n to adjust as follows：
Step one：WhenWhen, n=1；
Step 2：WhenWhen, n=2；
Step 3：WhenWhen, n=3；
……
Step N：N=N, now water inlet pipe is all open, wherein T2It is heat-exchanging water
Pipe outlet temperature of liquid, N is the water-main number of heat exchanging water pipe.
2. the control method of engine cold-starting combustion heater as claimed in claim 1, it is characterised in that work as T1Reach
T0When, controller closes gas pump and air pump, works as T1Not up to T0When, controller opens gas pump and air pump, wherein T0It is
Engine water jacket assigned temperature during engine start.
3. the control method of engine cold-starting combustion heater as claimed in claim 2, it is characterised in that water feeding of water pump
Amount is adjusted in such a way：Step one：When 0≤| T2-T1| during ＜ 35, water feeding of water pump amount adjusts low-grade to inflow；Step
Two：When 35≤| T2-T1| during ＜ 65, water feeding of water pump amount adjusts high to inflow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510260903.8A CN104847543B (en) | 2015-05-20 | 2015-05-20 | Engine low-temperature-start gas heater and control method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510260903.8A CN104847543B (en) | 2015-05-20 | 2015-05-20 | Engine low-temperature-start gas heater and control method thereof |
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| Publication Number | Publication Date |
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| CN104847543A CN104847543A (en) | 2015-08-19 |
| CN104847543B true CN104847543B (en) | 2017-05-03 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109736992A (en) * | 2019-02-19 | 2019-05-10 | 宣景君 | A kind of parking heater |
| CN111664040B (en) * | 2020-06-24 | 2024-07-12 | 北京高鑫伟业科技有限公司 | Engine air inlet and antifreezing solution preheating combination system and preheating method thereof |
| CN111664041A (en) * | 2020-06-24 | 2020-09-15 | 北京高鑫伟业科技有限公司 | Engine air inlet and crankcase and antifreeze liquid preheating combined system and preheating method thereof |
| CN111664037B (en) * | 2020-06-24 | 2024-06-07 | 北京高鑫伟业科技有限公司 | Preheating system and preheating method for engine crankcase |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP2991187B2 (en) * | 1997-10-20 | 1999-12-20 | トヨタ自動車株式会社 | Internal combustion engine having a combustion heater |
| CN101532458A (en) * | 2009-04-07 | 2009-09-16 | 舒漫 | Low-temperature heating device for an engine |
| CN202659376U (en) * | 2012-07-13 | 2013-01-09 | 安徽安凯汽车股份有限公司 | LNG (liquefied natural gas) passenger car provided with gas-fuel heater |
| CN202718799U (en) * | 2012-07-23 | 2013-02-06 | 江苏柳工机械有限公司 | Low-temperature cold start system of engine |
| FR3002984B1 (en) * | 2013-03-05 | 2015-04-03 | Peugeot Citroen Automobiles Sa | MOTOR VEHICLE HEAT ENGINE LUBRICATING OIL CIRCUIT PRESSING DEVICE |
| JP2015010737A (en) * | 2013-06-27 | 2015-01-19 | ダイハツ工業株式会社 | Warmup system |
| DE202013102885U1 (en) * | 2013-07-01 | 2013-07-17 | Ford Global Technologies, Llc | motor vehicle |
| CN103452731B (en) * | 2013-09-04 | 2016-04-20 | 北京工业大学 | A kind of heating system in advance for reduce engine motor-car cold start emission |
| CN103590957B (en) * | 2013-10-16 | 2016-06-15 | 北京北机机电工业有限责任公司 | A kind of warmer for electromotor |
| CN204663719U (en) * | 2015-05-20 | 2015-09-23 | 中国人民解放军装甲兵技术学院 | A kind of engine cold-starting combustion heater |
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Granted publication date: 20170503 Termination date: 20180520 |