CN101113712A - Device and method for rapidly pre-warming air-intake of gasoline engine cold-start - Google Patents
Device and method for rapidly pre-warming air-intake of gasoline engine cold-start Download PDFInfo
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- CN101113712A CN101113712A CNA2007100575263A CN200710057526A CN101113712A CN 101113712 A CN101113712 A CN 101113712A CN A2007100575263 A CNA2007100575263 A CN A2007100575263A CN 200710057526 A CN200710057526 A CN 200710057526A CN 101113712 A CN101113712 A CN 101113712A
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Abstract
The invention relates to a device for gasoline engine cold start to realize a quick preheating gas intake and a method thereof. The device comprises a petrol supply and a jet unit, a gas intake unit of a preheating device, an igniter electrode, a combustion chamber, a heat exchanger device, an enclosure, a temperature sensor and an electric control unit. The method is divided into the following steps. The temperature T of an intake tube is obtained before starting; then T is compared with a preset value T1, and when T is not less than T1, the engine starts in normal mode. When T is less than T1, the engine is started and then lasts for three seconds before igniting and an electromagnetic valve is opened, start; five seconds later, the engine is ignited and heats the intake gas and the temperature T of the intake tube is obtained; T then is compared with a preset value T2, and when T is not less than T2, the petrol jet to the combustion chamber is stopped and the engine is started; when T is less than T2, petrol is continuously supplied to the combustion chamber till T is not less than T2.
Description
Technical field
The present invention relates to a kind of device and method of realizing the fast pre-heating intaking of gasoline engine cold-start, belong to and reduce the gasoline engine cold-start draining technology.
Background technique
In discharge cycle test, learn that according to federal government's experiment rules test of Environmental Protection Agency HC, the CO discharging that is equipped with the petrol engine nearly 80% of three-way catalytic converter is to produce in cold starting initial a few minutes.The higher discharging of gasoline engine cold-start has caused the severe contamination of ambient air quality.Therefore, minimizing gasoline engine cold-start discharging meaning is very big.
Charge heating is one of effective measures that effectively reduce the gasoline engine cold-start discharging.Charge heating has concentrated preheating and divides two kinds of cylinder preheatings.Centralized Preheating unit is installed on the suction tude of motor, and the preheating of branch cylinder is installed in each cylinder or on the intake manifold, the preheating form mainly contains electric preheating plug, air intake heater and electric flame preheater.
The electric preheating plug is mainly used in air in the heating cylinder, the screw type resistance wire that main body is made with calite, resistance one end is welded on the center bolt, the other end is welded in the heater steel bushing lower curtate that heat-resistance stainless steel is made, screw rod and shell are contained on the cylinder with spark plug porcelain insulator, and each cylinder glow plug center bolt is connected to power supply with lead.Connect the glow plug switch before the engine start, electric current is through storage battery "+"-resistance wire-center bolt-storage battery "-".Resistance wire and the heating of heater steel bushing redden, and the air in the heating cylinder reaches smooth starting purpose.
Air intake heater is installed in the suction port below, and the heater element of heater is the PTC electric ceramic material with positive temperature coefficient, and the tall and big 40～60A of immediate current, 1min are heated to 60～80 ℃.
Electricity flame preheater is installed in intake manifold's inlet, is mainly become with oil sprayer by glow plug, and this Preheating unit also sprays diesel oil by oil supplying device and forms electric flame except that glow plug produces heat around it, to produce more heat.Before piloting engine, earlier the flame glow plug is carried out preheating, after preheating was finished, the back solenoid valve energising simultaneously of piloting engine was opened, and oil sprayer sprays to glow plug with fuel oil and forms electric flame.The glow plug preheating generally needs 30s even longer time.
These three kinds of air inlet heating devices mainly are to be used for auxiliary gasoline car to start smoothly, are not in order to reduce cold start emission.And three kinds of Preheating units are used for the petrol engine charge heating certain defective are all arranged.At first, three's power consumption is all very big, and this certainly will aggravate storage battery consumption, causes the electric power of storage battery own to descend, and is very unfavorable to cold starting, influences its life-span even cause starting failure, directly causes cold start emission to raise, all the more so when low temperature.Secondly, electric heater and electric flame preheater all are local heating, and the intake temperature inequality of not only being heated also can descend after engine start.In addition, electric flame preheater uses fuel to be diesel oil, is inconvenient to be used on the petrol engine.
In sum, be necessary to develop the Preheating unit that a cover is used to reduce the gasoline engine cold-start discharging.
Summary of the invention
The object of the present invention is to provide the device and method of the fast pre-heating intaking of a kind of gasoline engine cold-start.This air inlet heating device energy rapid heating air inlet, power consumption is few, and cost is low, system intergration height, its method operation is reliable, and the charge heating technology can be improved quality of mixing gas mixture, thereby effectively reduces the gasoline engine cold-start discharging.
The present invention is realized by following technical proposals.
This device comprises: air inlet unit, igniting polar, firing chamber, heat-exchanger rig, shell, temperature transducer and the ECU (Electrical Control Unit) of gasoline supply that links to each other with the petrol engine in-line and injection unit, Preheating unit.
Above-mentioned air inlet unit comprises:
The cylindrical first safety cover 2a of both ends open;
With the connecting body 5 that 2 one opening ends of first safety cover link to each other, play a part to connect and carrying;
Be positioned at the gas channel 30 on the connecting body, gas is circulated between two cavitys of its connection easily;
Be positioned at safety cover 2, the motor 4 that links to each other with 5 one end faces of connecting body;
Be positioned at the fan 1 on the motor 4;
With the essentially identical second safety cover 2b of the cylindrical first safety cover 2a boundary dimension, an opening end links to each other by screw 33 with connecting body 5, and another opening end and the first taper ring 10a and the second taper ring 10b are by being weldingly connected;
The first taper ring 10a two ends link to each other with the firing chamber inwall with second safety cover (2b) respectively, and have pore 36, and the part air that fan 1 is sent to enters heat-exchanger rig, finally enters engine intake;
The second taper ring 10b two ends link to each other with the heat-exchanger rig outer wall with the second safety cover 2b respectively, prevent that the gas in the heat exchanger from flowing backwards;
The deflector 12 of the jet fluid taper basically identical of taper and nozzle ejection links to each other with the firing chamber inwall by welding; Have refluence groove 35 on deflector 12, pass through for auxiliary wind, auxiliary wind rises strengthens oil droplet and air mixing, and fuel is further burnt fully and the effect of smooth combustion;
A wind guide way 11 relative with deflector 12 tapers, link to each other with the other end of deflector 12 by welding, the primary air nozzle 34 that distributing symmetrically around the wind guide way 11 passes through for a wind, and wind caught fire inflammable mixture to be provided and to reduce carbon black and generates for the initial stage.
The air mass flow optimal proportion that has refluence groove 35 on the primary air nozzle of an above-mentioned wind guide way 11 and the deflector 12 is 44: 56.
Above-mentioned gasoline supply and injection unit comprise:
Relative with motor 4, be fixed on connecting body 5 another end faces, the jet fluid profile is the low pressure fuel injector mouth 8 of hollow cone;
Be positioned at the solenoid valve 7 of oil nozzle 8 rear ends, be used to control the break-make of fuel oil.
Above-mentioned firing chamber comprises:
Be positioned at the conical baffled 13 of core tube inwall, prolong the combustion gas residence time, make burning more abundant.
Above-mentioned heat-exchanger rig is by two nested forming of the contour cylinder of concentric, and the inner core end face is an opening end, and the interlayer end face that inner core and urceolus form passes through welded seal;
The cylindrical core tube almost coaxial heart of heat-exchanger rig 15 and firing chamber, the two is communicated with by flue gas channel 17;
The urceolus of above-mentioned heat-exchanger rig has a Waste gas outlet 19, and the flue gas of firing chamber enters the inner/outer tube interlayer, after Waste gas outlet 19 enters outlet pipe through flue gas channel 17.
Above-mentioned jacket is in the heat-exchanger rig outside, and and heat-exchanger rig between form air blanketing, shell is an opening end near nozzle side one end, the cooling air enters, the other end is warm braw outlet 18, link to each other with engine intake, shell by screw on the heat-exchanger rig urceolus.
The said temperature sensor places on the engine air inlet tube.
Above-mentioned ECU (Electrical Control Unit) 25 is independent of electrical control system for engine, and control unit is realized the control and the protection of motor 4, solenoid valve 7, igniting polar 9, temperature transducer 26.
A kind of method of gasoline engine cold-start process rapidly pre-warming air-intake, this method may further comprise the steps:
(1) the engine air inlet tube temperature T that obtains before the engine start;
(2) the Preheating unit ECU (Electrical Control Unit) compares T and predefined value T1;
(3) when T 〉=T1, Preheating unit does not start, and motor starts according to normal mode;
(4) when T＜T1, starting electrical machinery continues igniting after 3 seconds, valve opening solenoid, beginning;
After (5) 5 seconds, igniting, chamber temperature raises gradually, begins air inlet is heated;
(6) the intake manifold temperature T after constantly acquisition is heated in the heating process;
(7) the Preheating unit ECU (Electrical Control Unit) compares T and predefined value T2;
(8) when T 〉=T2, solenoid valve closes, and stops to the firing chamber oil spout;
(9) begin ato unit this moment;
(10) when T＜T2, continue to the firing chamber fuel feeding, until T 〉=T2.
This device is provided with a three-way valve on the in-line behind the fuel filter, make device can use fuel oil from petrol pump, fuel oil process nozzle also atomizes under the air-flow effect, and light with high voltage ignition, the burning liberated heat is used for the preheating cool air, after the engine start, Hot air quilt sucks motor.
The present invention has following advantage with respect to prior art:
The invention has the advantages that, use low-pressure fuel injection gasoline high voltage ignition mode, the energy rapidly pre-warming air-intake, power consumption is little, can effectively reduce cold start emission.Adopt device of the present invention to reequip existing and petrol engine newly developed easily, the system cost cost is low.
Description of drawings
Fig. 1 is apparatus of the present invention structural representation;
Fig. 2 is applied to the block diagram of petrol engine for the present invention;
Fig. 3 oil nozzle structural drawing;
Fig. 4 is connecting body figure of the present invention;
Fig. 5 is a wind guide way of the present invention plan view (left side) and plan view (right side);
Fig. 6 is deflector figure of the present invention;
Fig. 7 is the present invention's first taper loop graph;
Fig. 8 is firing chamber core tube inner wall baffle-plate figure of the present invention;
Fig. 9 is apparatus of the present invention workflow diagram;
Figure 10 is an engine cold starting intake temperature variation diagram;
Figure 11 is engine cold starting discharging variation diagram;
Table 1 is car load cold starting discharging contrast;
1 is fan among the figure, and 2a is first safety cover, and 2b is second safety cover; 3 is spark coil, and 4 is motor, and 5 is connecting body; 6 is oil inlet pipe, 7 solenoid valves, and 8 is oil nozzle; 9 is igniting polar, and 10a is first taper ring, and 10b is second taper ring; 11 is a wind guide way, and 12 is deflector, 13 firing chamber core tube inner wall baffle-plates; 14 is the firing chamber, and 15 is heat-exchanger rig, and 16 is shell; 17 is flue gas channel, and 18 are the warm braw outlet, and 19 is Waste gas outlet; 20 is petrol pump; 21 is fuel filter, and 22 is three-way valve, and 23 is heater; 24 is other signal; 25 is the heater control unit, and 26 is intake air temperature sensor, and 27 is air-strainer; 28 is engine air inlet tube, and 29 is motor.
Embodiment
Gasoline supply and injection unit:
Contrast Fig. 2, according to the control strategy of petrol engine, prestart petrol pump 20 has been started working, and the starting key is in " ON " position, is full of fuel oil in the oil inlet pipe.Therefore, can be by means of petrol pump as heater 23 fuel supply devices.After motor 29 in-line intermediate fuel oil filter cleaners 21 three-way valve 22 is set, the fuel oil of certain pressure enters oil nozzle 8 by oil inlet pipe 6, and by solenoid valve 7 control fuel oil break-makes, oil nozzle is screwed in connecting body 5.This nozzle feature is that spray shapes is the open circles taper, and it is short to spray penetration distance, and spray cone angle is bigger.Under the certain condition of injection pressure, fuel flow is certain.This device has been realized low-pressure fuel injection, has made full use of petrol engine device itself, does not need the additional configuration Injection Pump, has reduced the complexity of apparatus of the present invention, has saved manufacture cost.
The air inlet unit:
This device adopts a motor 4 to drive a fan 1, is used to provide combustion air and cooling air.Motor adopts screw 32 to be fixed in connecting body 5, and connecting body is connected with screw 32,33 with the first safety cover 2a, the second safety cover 2b.Fresh air is through connecting body gas channel 30.Wherein combustion air is divided into wind and auxiliary wind again.Have 34, wind guide waies of 8 rectangular primary air nozzles and deflector 12 all around by being welded to connect along a wind guide way 11.Have 6 guiding gutters 35 on deflector 11, auxiliary wind enters firing chamber 14 through guiding gutter, and deflector is welded on the inwall of firing chamber.Wind mainly is to catch fire inflammable mixture to be provided and to reduce carbon black and generate for the initial stage; Auxiliary wind (eddy flow wind) is strengthened oil droplet and air mixing, makes further fully also smooth combustion of burning of fuel.The optimal proportion of wind and auxiliary wind is 44: 56.Mixed gas burns in the firing chamber, and waste gas, is discharged by Waste gas outlet 19 through the heat exchange layer at last through 2 cylindrical flue gas channel 17.
Ignition system:
Under wind and secondary wind action, fuel oil fully mixes by oil nozzle ejection back and with air, lights mixed gas by spark coil 3 conveying capacities by igniting polar 9.So just realized i.e. spray be function, reach the purpose of quick ignition.
Combustion system:
Burning is mainly carried out in the firing chamber, and firing chamber 14 is the cylindrical core tube, is provided with baffle plate 13, makes the combustion gas residence time long, fully burning.
Heat-exchange system:
By the cooling air that fan provides, the pore 36 by on the first taper ring 10a enters heat-exchanger rig 15, is sent by warm braw outlet 18.The second taper ring 10b connects heat-exchanger rig 15 outer walls and the second safety cover 2b by welding manner, and heat exchanger is connected with screw with shell, and the warm braw outlet is connected with screw with shell.In addition, form other heat exchange interlayer between heat exchanger outer wall and the shell, and have cool air to enter, carry out exchange heat, also send by warm braw outlet 18.Can guarantee that like this more heat is absorbed, reduce the heat that is lost in the atmosphere.
Automatical control system:
Automatical control system is realized program control and protective function by control unit 25, and is independent of electrical control system for engine, by the 12V storage battery power supply.Control unit is realized the control and the protection of motor, solenoid valve, electronic ignition, temperature transducer 26.
The outlet of heater warm braw is connected with engine air inlet tube 28, when engine charge is heated to uniform temperature, stops oil spout, can pilot engine, and is about to start key and beats in " START " position, and hot air just is inhaled into motor like this.
Contrast Preheating unit workflow shown in Figure 9.
(1) the engine air inlet tube temperature T that obtains before the engine start;
(2) the Preheating unit ECU (Electrical Control Unit) compares T and predefined value T1;
(3) when T 〉=T1, Preheating unit does not start, and motor starts according to normal mode;
(4) when T＜T1, starting electrical machinery continues igniting after 3 seconds, valve opening solenoid, beginning;
After (5) 5 seconds, igniting, chamber temperature raises gradually, begins air inlet is heated;
(6) the intake manifold temperature T after constantly acquisition is heated in the heating process;
(7) the Preheating unit ECU (Electrical Control Unit) compares T and predefined value T2;
(8) when T 〉=T2, solenoid valve closes, and stops to the firing chamber oil spout;
(9) begin ato unit this moment;
(10) when T＜T2, continue to the firing chamber fuel feeding, until T 〉=T2.
T1, T2, t are adjustable value.Its predefined value can be T1=10 ℃, T2=30 ℃, t=3min;
Need to prove, depend primarily on ambient temperature heating time, can realize the control of best intake temperature, this can realize by software, but need a certain amount of test data.
Embodiment:
1. be to have carried out experimental study on the 1.6L multiple spot electronic injection gasoline engine a discharge capacity.The atmosphere environment temperature is-2 ℃, heater fuel pressure 3.5bar, charge heating 32s.
The connection that Preheating unit carries out on petrol engine as shown in Figure 2 arranges that i.e. warm braw outlet links to each other with suction tude, and the heater fuel oil is provided by petrol pump.Intake temperature is increased to 30 ℃ by 9 ℃, and after piloting engine, intake temperature continues to raise, and can reach 84 ℃ behind the 1min, can be referring to Figure 10.
No matter use gasoline or ethanol petrol, charge heating all can make cold start emission reduce, and peak value and mean value all descend, can be referring to Figure 11.When using gasoline after engine start initial 40s can make at HC and CO and reduce by 46.0% and 36.4% respectively, charge heating can make HC and CO reduce by 33.4% and 11.1% respectively when using ethanol petrol in the same time.
2. be to have carried out experimental study on the 1.0L multiple spot electronic injection gasoline engine a discharge capacity.Ambient temperature is-7 ℃, soaks car 12h, heater fuel pressure 3bar, charge heating 1min.
In the cold starting car load emission testing, the THC that tests out and CO discharging is all low, lower by 14.8% and 77.3% than limit value respectively than state III, IV standard cryogenic cold start emission limit value, sees Table 1.
Table 1
| Title | THC(g/km) | CO(g/km) |
| State III, IV emission limit | 2.7 | 24 |
| Test value | 2.3 | 5.44 |
| Result of determination | Up to standard | Up to standard |
Claims (10)
1. the device of a gasoline engine cold-start process rapidly pre-warming air-intake, it is characterized in that: this device comprises: air inlet unit, igniting polar, firing chamber, heat-exchanger rig, shell, temperature transducer and the ECU (Electrical Control Unit) of gasoline supply that links to each other with the petrol engine in-line and injection unit, Preheating unit.
2. a kind of according to claim 1 device of gasoline engine cold-start process rapidly pre-warming air-intake is characterized in that, described air inlet unit comprises:
Cylindrical first safety cover (2a) of both ends open;
With first (2) connecting bodys that opening end links to each other of safety cover (5), play a part to connect and carrying;
Be positioned at the gas channel (30) on the connecting body, gas is circulated between two cavitys of its connection easily;
Be positioned at first safety cover (2), with (5) motors that end face links to each other of connecting body (4);
Be positioned at the fan (1) on the motor (4);
With first safety cover (2) essentially identical second safety cover of boundary dimension (2b), an opening end links to each other by screw (33) with connecting body (5), and another opening end and first taper ring (10a) and second taper ring (10b) are by being weldingly connected;
First taper ring (10a) two ends link to each other with the firing chamber inwall with second safety cover (2b) respectively, and have pore (36), and the part air that fan (1) is sent to enters heat-exchanger rig, finally enters engine intake;
Second taper ring (10b) two ends link to each other with the heat-exchanger rig outer wall with second safety cover (2b) respectively, prevent that the gas in the heat exchanger from flowing backwards;
The deflector (12) of the jet fluid taper basically identical of taper and nozzle ejection, link to each other with the firing chamber inwall by welding, on deflector (12), have refluence groove (35), pass through for auxiliary wind, auxiliary wind rises strengthens oil droplet and air mixing, makes the further fully also effect of smooth combustion of burning of fuel;
A wind guide way (11) relative with deflector (12) taper, link to each other with the other end of deflector (12) by welding, primary air nozzle (34) is symmetrically distributing around the wind guide way (11), pass through for a wind, wind caught fire inflammable mixture to be provided and to reduce carbon black and generates for the initial stage.
3. as the device of a kind of gasoline engine cold-start process rapidly pre-warming air-intake as described in the claim 2, it is characterized in that the air mass flow ratio that has refluence groove (35) on the primary air nozzle of a described wind guide way (11) and the deflector (12) is 44: 56.
4. a kind of according to claim 1 device of gasoline engine cold-start process rapidly pre-warming air-intake is characterized in that, described gasoline supply and injection unit comprise:
Relative with motor (4), be fixed on another end face of connecting body (5), the jet fluid profile is the low pressure fuel injector mouth (8) of hollow cone;
Be positioned at the solenoid valve (7) of oil nozzle (8) rear end, be used to control the break-make of fuel oil.
5. a kind of according to claim 1 device of gasoline engine cold-start process rapidly pre-warming air-intake is characterized in that, described firing chamber comprises:
Cylindrical core tube (14);
Be positioned at conical baffled (13) of core tube inwall, prolong the combustion gas residence time, make burning more abundant.
6. a kind of according to claim 1 device of gasoline engine cold-start process rapidly pre-warming air-intake is characterized in that:
Described heat-exchanger rig is by two nested forming of the contour cylinder of concentric, and the inner core end face is an opening end, and the interlayer end face that inner core and urceolus form passes through welded seal;
The cylindrical core tube almost coaxial heart of heat-exchanger rig (15) and firing chamber, the two is communicated with by flue gas channel (17);
The urceolus of described heat-exchanger rig has a Waste gas outlet (19), and the flue gas of firing chamber enters the inner/outer tube interlayer, after Waste gas outlet (19) enters outlet pipe through flue gas channel (17).
7. a kind of according to claim 1 device of gasoline engine cold-start process rapidly pre-warming air-intake, it is characterized in that: described jacket is in the heat-exchanger rig outside, and and heat-exchanger rig between form air blanketing, shell is an opening end near nozzle side one end, the other end links to each other with engine intake, shell by screw on the heat-exchanger rig urceolus.
8. a kind of according to claim 1 device of gasoline engine cold-start process rapidly pre-warming air-intake is characterized in that: described temperature transducer places on the engine air inlet tube.
9. a kind of according to claim 1 device of gasoline engine cold-start process rapidly pre-warming air-intake is characterized in that:
Described ECU (Electrical Control Unit) (25) is independent of electrical control system for engine, and control unit is realized the control and the protection of motor (4), solenoid valve (7), igniting polar (9), temperature transducer (26).
10. the method for a gasoline engine cold-start process rapidly pre-warming air-intake is characterized in that this method may further comprise the steps:
(1) the engine air inlet tube temperature T that obtains before the engine start;
(2) the Preheating unit ECU (Electrical Control Unit) compares T and predefined value T1;
(3) when T 〉=T1, Preheating unit does not start, and motor starts according to normal mode;
(4) when T＜T1, starting electrical machinery continues igniting after 3 seconds, valve opening solenoid, beginning;
After (5) 5 seconds, igniting, chamber temperature raises gradually, begins air inlet is heated;
(6) the intake manifold temperature T after constantly acquisition is heated in the heating process;
(7) the Preheating unit ECU (Electrical Control Unit) compares T and predefined value T2;
(8) when T 〉=T2, solenoid valve closes, and stops to the firing chamber oil spout;
(9) begin ato unit this moment;
(10) when T＜T2, continue to the firing chamber fuel feeding, until T 〉=T2.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100575263A CN100545444C (en) | 2007-06-04 | 2007-06-04 | The device and method of gasoline engine cold-start pre-heating intaking |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2007100575263A CN100545444C (en) | 2007-06-04 | 2007-06-04 | The device and method of gasoline engine cold-start pre-heating intaking |
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| Publication Number | Publication Date |
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| CN101113712A true CN101113712A (en) | 2008-01-30 |
| CN100545444C CN100545444C (en) | 2009-09-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104234777A (en) * | 2013-06-18 | 2014-12-24 | 济南吉美乐电源技术有限公司 | Device universal for low-temperature start of diesel engine |
| CN103114919B (en) * | 2013-03-14 | 2015-10-07 | 潍柴动力股份有限公司 | A kind of engine cold-start method and device |
| CN107764553A (en) * | 2017-10-23 | 2018-03-06 | 北京理工大学 | A kind of adjustable air inlet heating device pilot system |
| CN111230743A (en) * | 2020-02-20 | 2020-06-05 | 杭州匠琇科技有限公司 | Environment-friendly grinding machine |
| CN111664039A (en) * | 2020-06-24 | 2020-09-15 | 北京高鑫伟业科技有限公司 | Engine air inlet preheating system and preheating method thereof |
| CN112746924A (en) * | 2020-12-30 | 2021-05-04 | 北京理工大学 | Self-combustion type flame air inlet preheating system for diesel engine |
-
2007
- 2007-06-04 CN CNB2007100575263A patent/CN100545444C/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114919B (en) * | 2013-03-14 | 2015-10-07 | 潍柴动力股份有限公司 | A kind of engine cold-start method and device |
| CN104234777A (en) * | 2013-06-18 | 2014-12-24 | 济南吉美乐电源技术有限公司 | Device universal for low-temperature start of diesel engine |
| CN104234777B (en) * | 2013-06-18 | 2016-04-27 | 济南吉美乐电源技术有限公司 | A kind of diesel engine cold-starting universal device |
| CN107764553A (en) * | 2017-10-23 | 2018-03-06 | 北京理工大学 | A kind of adjustable air inlet heating device pilot system |
| CN111230743A (en) * | 2020-02-20 | 2020-06-05 | 杭州匠琇科技有限公司 | Environment-friendly grinding machine |
| CN111664039A (en) * | 2020-06-24 | 2020-09-15 | 北京高鑫伟业科技有限公司 | Engine air inlet preheating system and preheating method thereof |
| CN112746924A (en) * | 2020-12-30 | 2021-05-04 | 北京理工大学 | Self-combustion type flame air inlet preheating system for diesel engine |
| CN112746924B (en) * | 2020-12-30 | 2021-09-21 | 北京理工大学 | Self-combustion type flame air inlet preheating system for diesel engine |
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| Publication number | Publication date |
|---|---|
| CN100545444C (en) | 2009-09-30 |
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