CN101638053B - Automobile control system, method and automobile - Google Patents
Automobile control system, method and automobile Download PDFInfo
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- CN101638053B CN101638053B CN200810041092A CN200810041092A CN101638053B CN 101638053 B CN101638053 B CN 101638053B CN 200810041092 A CN200810041092 A CN 200810041092A CN 200810041092 A CN200810041092 A CN 200810041092A CN 101638053 B CN101638053 B CN 101638053B
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Abstract
The invention relates to an automobile control system, which comprises a gasoline supply device, a methanol supply device and a fuel supply control system, wherein the fuel supply control device comprises a monitoring unit and an electronic control unit; the monitoring unit monitors the water temperature of an engine and sends the temperature to the electronic control unit; the electronic control unit sends a control command to the methanol supply device when judging that the water temperature exceeds the preset temperature, and the methanol supply device supplies methanol to the engine; and contrarily, the electronic control unit sends the control command to the gasoline supply device which supplies gasoline to the engine. An automobile control method comprises the following steps: monitoring the water temperature of the engine; when the water temperature exceeds the preset temperature, controlling the methanol supply device to supply the methanol to the engine; and contrarily, controlling the gasoline supply device to supply the gasoline to the engine. The system and the method solve the problems of difficult low-temperature starting, poor cooler discharge and methanol-gasoline mixed fuel demixing caused by using methanol or the methanol-gasoline mixed fuel in an automobile in the prior art.
Description
Technical field
The present invention relates to automobile control technology field, particularly a kind of automotive control system, method and automobile.
Background technology
Methyl alcohol is a kind of new automobile-used alternative energy, because the methanol production raw material is extensive, the transportation of product, storage, packing filling and use are similar with internal combustion motor benzin, diesel oil fuel characteristics on the market; And the methyl alcohol antiknock property high, self contain the oxygen burning thoroughly, flach point is higher than gasoline, combustion process safety; Therefore, methyl alcohol becomes reality, optimal vehicle alternative fuel of back petroleum times.
At present, the automotive applications methanol fuel mainly contains dual mode: first kind is with certain proportion, and methyl alcohol and gasoline are mixed with composite fuel in advance, and automobile directly uses this composite fuel, makes the driving engine acting, drives automobile and advances; Another kind is to mix with arbitrary proportion, as motor vehicle fuel, according to the different qualities of methyl alcohol and gasoline; Like ratio of refraction of density, light etc.; Through the fuel identification sensor, differentiate different methanol gasoline ratios, press the calorific value amount and supply with different quantity of fuel; Make the driving engine acting, drive automobile and advance.
No matter automobile uses methanol fuel all to have following problem with above-mentioned which kind of mode.
The cold-starting difficult problem.During engine cold-start; Rotating speed is low, air rate is slow, adds that outside air temperature is low, thereby the fuel vaporization difficulty; And the latent heat of vaporization of methyl alcohol is 2-3 times of gasoline; So it is many that methyl alcohol evaporates time institute's absorbed heat than gasoline, can cause the temperature at engine intake manifold place sharply to descend, and further worsened the air inlet evaporation conditions.The saturated steam pressure ratio gasoline of methyl alcohol is low by about 1/2, thus when cold start-up, have only a spot of fuel can evaporate, if evaporate the concentration out of reach of the burning mixture of the formation concentration limit that catches fire, then mixture gas can not fire burns, engine starting is difficult.Therefore use the automobile of methyl alcohol and gasoline mixed fuel, especially high-proportion methanol and gasoline mixed fuel to have the cold-starting difficult problem.
Cold machine emission problem.Because the latent heat of vaporization of methyl alcohol is high, methanol vehicle to the whole process of tickover operating mode, causes engine temperature lower through warming-up from the cold-starting operating mode, and the mixture gas atomizing is poor.The three-element catalytic actuator temperature is low, does not reach the catalyzed conversion temperature to waste gas.Therefore, conventional discharging is relatively poor.Simultaneously, the methyl alcohol incomplete combustion, the intermediate product-formaldehyde of methyl alcohol burning, and unburned methyl alcohol will be in exhaust processes, along with waste gas is discharged together.These the two kinds of unconventional dischargings of formaldehyde and unburned methyl alcohol can cause that catalyst poisoning causes environmental pollution.
Methyl alcohol and the gasoline problem of dissolving each other.Methyl alcohol contains hydroxyl, has stronger polarity.The apolar substance that gasoline is made up of various hydrocarbon compounds, it and methanol mixture are partial miscibility systems, have top temperature of dissolving each other.In case ambient temperature is lower than the top temperature of dissolving each other, methanol gasoline will take place disconnected from each other and influence is used.On the other hand, the existence of water also can have a strong impact on the intermiscibility of methanol gasoline.Methyl alcohol and gasoline mixed fuel can absorb moisture automatically from air in storage and use.When the content of water in the composite fuel increased, the intermiscibility of methyl alcohol and gasoline will descend; When the moisture of composite fuel acquired a certain degree, the oil separation phenomenon just appearred.Moisture can influence the adjustment of the comprehensive sensor of some type in the methanol vehicle, also can reduce the energy of fuel thereby the economy and the tractive performance of vehicle had a negative impact.
In sum, the lamination problem of cold-starting difficulty, cold machine discharging and methyl alcohol and gasoline will appear in present automobile methyl alcohol or methanol gasoline mixed fuel.
Summary of the invention
A kind of automotive control system and the method for providing to be solved by this invention solved the cold-starting difficulty that the automotive applications methanol fuel brings, cold machine discharging difference and methyl alcohol and gasoline lamination problem.
The present invention provides a kind of automotive control system, comprises gas supply device, methyl alcohol feedway and fuel supply control system, and said fuel supply control system comprises monitoring means and electronic control unit;
Said monitoring means is used to monitor the water temperature of driving engine, sends said temperature to said electronic control unit;
Said electronic control unit is judged when said water temperature surpasses design temperature, is used for sending controling instruction to said methyl alcohol feedway, and said methyl alcohol feedway is used to driving engine and supplies with methyl alcohol; Otherwise said electronic control unit is used for sending controling instruction to said gas supply device, and said gas supply device is used to driving engine and supplies with gasoline.
Preferably, said monitoring means is a cooling-water temperature transmitter.
Preferably, said fuel supply control system also comprises the methanol solution level sensor, is used for measuring the liquid level of said methyl alcohol feedway methyl alcohol, sends liquid level signal to said electronic control unit;
When said methyl alcohol liquid level is lower than when setting minimum methyl alcohol liquid level, said electronic control unit is used for sending controling instruction to gas supply device, and said gas supply device is that driving engine is supplied with gasoline; While sending controling instruction to methyl alcohol annunciator, said methyl alcohol annunciator are used for reporting to the police.
Preferably, said fuel supply control system also comprises the gasoline level sensor, is used for measuring the liquid level of said gas supply device gasoline, sends liquid level signal to said electronic control unit;
When said gasoline liquid level is lower than when setting minimum gasoline liquid level, said electronic control unit is used for sending controling instruction to methyl alcohol feedway, and said methyl alcohol feedway is that driving engine is supplied with methyl alcohol; While sending controling instruction to gasoline annunciator, said gasoline annunciator are used for reporting to the police.
Preferably, said fuel supply control system also comprises methanol fuel oil system pressure sensor, is used to monitor methanol fuel oil system charge oil pressure, sends pressure signal to said electronic control unit;
When pressure during less than methyl alcohol charge oil pressure setting value, said electronic control unit is used for sending controling instruction to gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
Preferably, said fuel supply control system also comprises gasoline fuel oil system pressure sensor, is used to monitor gasoline fuel oil system charge oil pressure, sends pressure signal to said electronic control unit;
When pressure during less than gasoline charge oil pressure setting value, said electronic control unit is used for sending controling instruction to methyl alcohol feedway, and said methyl alcohol feedway is that driving engine is supplied with methyl alcohol.
Preferably, also comprise throttle position sensor and car speed sensor, said throttle position sensor is used to monitor throttle opening, sends aperture signal to said electronic control unit;
Said car speed sensor is used to monitor the speed of a motor vehicle, sends GES to said electronic control unit;
When said throttle opening is zero and the said speed of a motor vehicle when being zero, said electronic control unit sending controling instruction is to the gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
Preferably, said gas supply device and said methyl alcohol feedway homonymy or be arranged symmetrically on the floor of automobile.
The present invention also provides a kind of automobile control method, may further comprise the steps:
The water temperature of monitoring driving engine is sent said water temperature to control unit;
When said water temperature surpassed design temperature, control unit sending controling instruction to methyl alcohol feedway, methyl alcohol feedway were that driving engine is supplied with methyl alcohol; Otherwise sending controling instruction to gas supply device, gas supply device are driving engine supplies with gasoline.
Preferably, also comprise the liquid level of measuring methyl alcohol, when said liquid level is lower than when setting minimum methyl alcohol liquid level, sending controling instruction to gas supply device, said gas supply device are that driving engine is supplied with gasoline; While sending controling instruction to methyl alcohol annunciator, said methyl alcohol annunciator are used for reporting to the police.
Preferably, also comprise the liquid level of measuring gasoline, when said liquid level is lower than when setting minimum gasoline liquid level, sending controling instruction to methyl alcohol feedway, said methyl alcohol feedway are that driving engine is supplied with methyl alcohol; While sending controling instruction to gasoline annunciator, said gasoline annunciator are used for reporting to the police.
Preferably, also comprise monitoring methanol fuel oil system charge oil pressure, send pressure signal to said electronic control unit;
When pressure during less than methyl alcohol charge oil pressure setting value, said electronic control unit is used for sending controling instruction to gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
Preferably, also comprise monitoring gasoline fuel oil system charge oil pressure, send pressure signal to said electronic control unit;
When pressure during less than gasoline charge oil pressure setting value, said electronic control unit is used for sending controling instruction to methyl alcohol feedway, and said methyl alcohol feedway is that driving engine is supplied with methyl alcohol.
Preferably, also comprise:
The monitoring throttle opening sends aperture signal to said electronic control unit;
The monitoring speed of a motor vehicle is sent GES to said electronic control unit;
When said throttle opening is zero and the said speed of a motor vehicle when being zero, said electronic control unit sending controling instruction is to the gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
The present invention also provides a kind of automobile, and said automobile comprises said automotive control system.
Preferably, said automobile also comprises the oil mass read out instrument, is used to show the liquid level of said methyl alcohol and gasoline.
Preferably, said automobile also comprises first indicating device and second indicating device, and said first indicating device is used to show the mode of operation of methyl alcohol feedway; Said second indicating device is used to show the mode of operation of gas supply device.
Preferably, said automobile also comprises methyl alcohol and Fuel Petroleum vapor recovery system, is used to reclaim methanol vapor or gasoline vapors to said driving engine.
Preferably, said automobile also comprises shifter, is used to force to switch the mode of operation of methyl alcohol feedway and gas supply device.
Compared with prior art, the present invention has the following advantages:
The present invention provides independently methyl alcohol feedway and gas supply device, and methyl alcohol and gasoline need not mix, through the supply of fuel supply control system control methyl alcohol and two kinds of fuel of gasoline.Said fuel supply control system control gas supply device is that driving engine is supplied with gasoline during low temperature.When monitoring the water temperature superelevation design temperature of driving engine, said fuel supply control system control methyl alcohol feedway is that driving engine is supplied with methyl alcohol.Thereby cold-starting difficulty, cold machine discharging difference and methyl alcohol and gasoline lamination problem that automotive use methyl alcohol in the prior art or carbinol gasoline fuel bring have been solved.
Description of drawings
Fig. 1 is first embodiment of the invention methyl alcohol and gasoline two cover fuel supply system constructionals drawing;
Fig. 2 is methyl alcohol of the present invention and automobile jet control system constructional drawing;
Fig. 3 is a kind of automobile control method embodiment of the present invention diagram of circuit;
Fig. 4 is an oil mass read out instrument scheme drawing of the present invention;
When being methyl alcohol low on fuel of the present invention, realizes Fig. 5 the diagram of circuit of reporting to the police;
When being gasoline low on fuel of the present invention, realizes Fig. 6 the diagram of circuit of reporting to the police;
Fig. 7 is methanol gasoline dual-fuel automobile first indicating device of the present invention and the second indicating device scheme drawing;
Fig. 8 is the gauge panel scheme drawing of methanol gasoline dual-fuel automobile of the present invention.
The specific embodiment
For make above-mentioned purpose of the present invention, feature and advantage can be more obviously understandable, does detailed explanation below in conjunction with the accompanying drawing specific embodiments of the invention.
Automotive control system according to the invention comprises gas supply device, methyl alcohol feedway and fuel supply control system, and said fuel supply control system comprises monitoring means and electronic control unit.
The water temperature of said monitoring means monitoring driving engine is sent said temperature to said electronic control unit.Monitoring means is a cooling-water temperature transmitter among the present invention.
Said electronic control unit is judged when said water temperature surpasses design temperature, is used for sending controling instruction to said methyl alcohol feedway, and said methyl alcohol feedway is used to driving engine and supplies with methyl alcohol; Otherwise said electronic control unit is used for sending controling instruction to said gas supply device, and said gas supply device is used to driving engine and supplies with gasoline.
Said design temperature for example is T.T can get the numerical value between 40 ℃ to 70 ℃ according to actual needs.If said water temperature surpasses this design temperature T, said automotive applications methanol fuel, on the contrary use Fuel Petroleum.
Embodiment of the present invention provides independently methyl alcohol feedway and gas supply device; The monitoring means of said fuel supply control system is through the water temperature of monitoring driving engine; When the water temperature of said driving engine surpasses when preestablishing temperature; Said electronic control unit sending controling instruction to said methyl alcohol feedway, said methyl alcohol feedway is that driving engine provides methyl alcohol, electronic control unit sending controling instruction to said gas supply device; Said gas supply device stops to supply with gasoline for driving engine, thereby realizes the switching of two kinds of feed apparatus mode of operations.The present invention efficiently solves degradation problem under the vehicle dynamic quality that the cold-starting difficulty that the automotive use methanol fuel brings, cold machine discharging difference and methyl alcohol and gasoline layering bring.
Referring to Fig. 1, this figure is first embodiment of the invention methyl alcohol and gasoline two cover fuel supply system constructionals drawing.
Methyl alcohol feedway and gas supply device are structurally independent mutually, parallel being arranged on the floor of automobile.
Said methyl alcohol feedway comprises methyl alcohol filler pipe assembly 101, methanol fuel case 102, methyl alcohol fil 105; Methyl alcohol chargine line 106; Methyl alcohol oil return line 107, methyl alcohol evaporation reclaim line 108, methyl alcohol fuel injector 109; Methyl alcohol pressure-modulation valve 110, methyl alcohol distribution pipe 111 and methanol fuel oil system pressure sensor 112.Wherein said methanol fuel case 102 comprises methanol pump 103 and methanol solution level sensor 104.
Said gas supply device comprises gasoline filler pipe assembly 101`, Fuel Petroleum case 102`, gasoline intercepter 105`; Gasoline chargine line 106`; Gasoline oil return line 107`, gasoline evaporation reclaim line 108`, gasoline ejector 109`; Gasoline pressure-modulation valve 110`, gasoline distribution pipe 111` and gasoline fuel oil system pressure sensor 112`.Wherein, said Fuel Petroleum case 102` comprises the petrol feed pump 103` of integrated level sensor formula; Fuel Petroleum case 102` also can adopt the mutual freestanding pattern of petrol feed pump and level sensor.
In addition; Be furnished with methyl alcohol, two kinds of fuel oil sprayers of gasoline on the induction maniflod of the driving engine 120 of automobile; Be respectively methyl alcohol fuel injector 109 and gasoline ejector 109`; Said two cover fuel injectors can be arranged front and back on induction maniflod, or otherwise arrange according to the particular case of various inlet manifold.Here, preferred front-seat (near fuel chambers) sprayed methanol fuel for the methyl alcohol fuel injector, and back row is the gasoline ejector injected petrol.
Vehicle adopts said methyl alcohol feedway and gas supply device, stores methanol fuel and Fuel Petroleum respectively, and selects the material and the resistant to gasoline material of anti-methyl alcohol respectively for use.Promptly all adopt the metal and the non-metallic material of anti-methyl alcohol for the methyl alcohol filler pipe assembly in the methyl alcohol feedway, methanol fuel case, methanol pump, methanol solution level sensor, methyl alcohol fil, methyl alcohol pipeline, methyl alcohol fuel feeding guide rail, methyl alcohol fuel injector etc.; And all adopt resistant to gasoline metal and non-metallic material for the gasoline filling conduit assembly in the gas supply device, Fuel Petroleum case, petrol feed pump, gasoline level sensor, gasoline intercepter, petrol line, gasoline fuel feeding guide rail, petrol injector etc.
In the prior art, for hundred-percent methyl alcohol and gasoline, material adaptability problem separately is prone to solve, and has avoided studying the new material problem of new adaptation different proportion methyl alcohol and gasoline mixed fuel.
The working process of the fuel supply control system of second embodiment of the invention is described below in conjunction with Fig. 2.Referring to Fig. 2, this figure is a fuel supply control system constructional drawing of the present invention.
The core of said fuel supply control device is an electronic control unit 201; Analyze and handle the data message that each sensor sends; Send instruction to various execution units according to said data message, thereby realize control said methyl alcohol feedway and gas supply device mode of operation.
Said sensor comprises intake temperature pressure sensor 202, cooling-water temperature transmitter 203, tachogen 204 and exhaust gas oxygensensor 205 etc.
During vehicle launch, whether reach temperature T, the said electronic control unit 201 said gas supply devices of control injected petrol in driving engine according to ECT Engine Coolant Temperature.
Gasoline electronics oil pump 206 is opened in said electronic control unit 201 controls; According to the signal of intake temperature pressure sensor 202 and the signal of cooling-water temperature transmitter 203; Calculate the amount of gasoline that needs injection, accuracy control gasoline ejector 207 sprays quantitative gasoline.Simultaneously, said tachogen 204 gets access to the rotating speed of present engine, and control ignition coil 208 is at suitable spark advance angle discharge igniting.After getting into idling and operating condition; Said electronic control unit 201 calculates fuel charge according to engine load, and according to the signal that exhaust gas oxygensensor 205 feeds back, adjusts idling bypath air valve 209 or spark advance angle; Driving engine is carried out closed loop control, thereby realize the smooth startup of automotive engine.
During above-mentioned automobile starting; Said fuel supply control system is controlled said gas supply device injected petrol in driving engine, has solved the difficult problem of cold-starting that the automotive use methanol fuel is brought, and has also solved under the cold machine state simultaneously; Conventional discharging is poor; And the methanol fuel atomizing effect is poor, and it is insufficient to burn, and generates more combustion intermediate product-formaldehyde and does not fire the unconventional emission problem of methyl alcohol.
Whether the water temperature of said fuel supply control system monitoring driving engine surpasses setting value; Be specially: cooling-water temperature transmitter 203 is measured the water temperature of said driving engine; Send said water temperature to said fuel supply control system; If said water temperature surpasses setting value, it is that driving engine provides methanol fuel that said fuel supply control system is controlled said methyl alcohol feedway, controls said gas supply device simultaneously and stops for driving engine Fuel Petroleum being provided; Otherwise if the water temperature of said driving engine surpasses setting value, said fuel supply control system is controlled said gas supply device and is continued as said driving engine Fuel Petroleum is provided.
Under methyl alcohol feedway mode of operation; Said fuel supply control device is opened methyl alcohol electronics oil pump 210 automatically, sets up methanol fuel feed system pressure, closes gasoline electronics oil pump 206; According to the signal of intake temperature pressure sensor 202 and the signal of cooling-water temperature transmitter 203; Calculate the quantity of methyl alcohol that needs injection, accuracy control methyl alcohol fuel injector 211 sprays quantitative methyl alcohol, carries out the corresponding spark advance angle of methanol fuel simultaneously; According to the signal of exhaust gas oxygensensor 205 feedbacks, adjustment idling bypath air valve 209 or spark advance angle carry out closed loop control to driving engine.
Under the above-mentioned gas supply device mode of operation, said fuel supply control system also comprises the gasoline level sensor, and said gasoline level sensor is measured the liquid level of gasoline in the said gas supply device, sends said liquid level to said fuel supply control system.
When said gasoline liquid level was lower than minimum gasoline liquid level, said electronic control unit sending controling instruction was to the methyl alcohol feedway, and said methyl alcohol feedway is that driving engine is supplied with methyl alcohol; While sending controling instruction to gasoline annunciator, said gasoline annunciator are used for reporting to the police, warning low on fuel, the gasoline of in time annotating.
Under the above-mentioned methyl alcohol feedway mode of operation, said fuel supply control system also comprises the methanol solution level sensor, and said methanol solution level sensor is measured the liquid level of methyl alcohol in the said methyl alcohol feedway, sends said liquid level to said fuel supply control system.
When said methyl alcohol liquid level was lower than minimum methyl alcohol liquid level, said electronic control unit was used for sending controling instruction to gas supply device, and said gas supply device is that driving engine is supplied with gasoline; While sending controling instruction to methyl alcohol annunciator, said methyl alcohol annunciator are used for reporting to the police, warning low on fuel, the methyl alcohol of in time annotating.
Fuel supply control system according to the invention also comprises methanol fuel oil system pressure sensor 112, is used to monitor methanol fuel oil system charge oil pressure, sends said pressure to said electronic control unit.
When pressure during less than methyl alcohol charge oil pressure setting value, said electronic control unit is used for sending controling instruction to gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
Fuel supply control system according to the invention also comprises gasoline fuel oil system pressure sensor 112`, is used to monitor gasoline fuel oil system charge oil pressure, sends said pressure to said electronic control unit.
When pressure during less than gasoline charge oil pressure setting value, said electronic control unit is used for sending controling instruction to methyl alcohol feedway, and said methyl alcohol feedway is that driving engine is supplied with methyl alcohol.
Above-mentioned methanol fuel oil system pressure sensor 112 is used for monitoring methyl alcohol or gasoline charge oil pressure respectively with gasoline fuel oil system pressure sensor 112`; For example the normal fuel injection pressure set points is 350kPa; If pressure is lower than 280kPa, promptly 20% of the subnormal pressure setting value, explain that feed apparatus breaks down; Electronic control unit switches another kind of feed apparatus work, has effectively guaranteed the safety in the gasoline driving process.
Certainly can also set normal fuel injection pressure according to actual needs is other numerical value, when actual charge oil pressure be lower than normal value 20% the time, explain that feed apparatus breaks down.
Fuel supply control system according to the invention also comprises throttle position sensor and car speed sensor, and said throttle position sensor is used to monitor throttle opening, sends said aperture to said electronic control unit.
Said car speed sensor is used to monitor the speed of a motor vehicle, sends the said speed of a motor vehicle to said electronic control unit.
When said throttle opening is zero and the said speed of a motor vehicle when being zero, said electronic control unit sending controling instruction is to the gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
Above-mentioned when throttle opening is zero for the zero-sum speed of a motor vehicle, electronic control unit switches the work of gasoline feed apparatus.Switch when this method is used to stop, this moment, the work of gasoline feed apparatus was merely several seconds.During parking be: with gasoline driving engine is washed away, avoid having retained methanol solution, soak for a long time, and cause corrosion to material at each parts of engine interior with the gasoline feed apparatus style of work.
Said methyl alcohol feedway and said gas supply device homonymy or be arranged symmetrically on the floor of automobile.
The present invention provides independently fuel supply system; Control the mode of operation of said methyl alcohol feedway and gas supply device through said fuel supply control device; Pass through the signal of each sensor of analyzing and processing simultaneously; Control the mode of operation of driving engine in real time, realize the optimization of engine performance.
Based on above-mentioned a kind of automotive control system, the present invention also provides a kind of automobile control method, specifies its workflow below in conjunction with specific embodiment.
Referring to Fig. 3, this figure is a kind of automobile control method embodiment of the present invention diagram of circuit.May further comprise the steps:
S301: the water temperature of monitoring driving engine, send said water temperature to control unit.
S302: when said water temperature surpassed design temperature, control unit sending controling instruction to methyl alcohol feedway, methyl alcohol feedway were that driving engine is supplied with methyl alcohol; Otherwise sending controling instruction to gas supply device, gas supply device are driving engine supplies with gasoline.
The method of the invention embodiment still is the condition of gasoline through the water temperature of monitoring driving engine as automotive use methyl alcohol; When said water temperature surpasses design temperature; Control unit control methyl alcohol feedway is that driving engine is supplied with methyl alcohol, and control unit control gas supply device stops to supply with gasoline for driving engine; Otherwise control unit control gas supply device continues as driving engine and supplies with gasoline.Automobile control method according to the invention has realized under different operating modes being that automobile is supplied with methyl alcohol and gasoline, has solved degradation problem under the vehicle dynamic quality that the cold-starting difficulty that the automotive use methanol fuel brings, cold machine discharging difference and methyl alcohol and gasoline layering bring.
Need to prove that the method for the invention also comprises the liquid level of measuring methyl alcohol, when said methyl alcohol liquid level is lower than minimum methyl alcohol liquid level, sending controling instruction to methyl alcohol annunciator, said methyl alcohol alarm equipment alarm.The method of the invention also comprises the liquid level of measuring gasoline, when said liquid level is lower than minimum gasoline liquid level, and sending controling instruction to gasoline annunciator, said gasoline alarm equipment alarm.The present invention passes through the liquid level of monitoring methyl alcohol or gasoline, and when being lower than minimum liquid level, automatically switches to another kind of fuel feeding state, reports to the police simultaneously, and the notice navigating mate in time refuels.
Need to prove that the method for the invention also comprises monitoring methanol fuel oil system charge oil pressure, sends pressure signal to said electronic control unit.
When pressure during less than methyl alcohol charge oil pressure setting value, said electronic control unit is used for sending controling instruction to gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
Monitoring gasoline fuel oil system charge oil pressure sends pressure signal to said electronic control unit.
When pressure during less than gasoline charge oil pressure setting value, said electronic control unit is used for sending controling instruction to methyl alcohol feedway, and said methyl alcohol feedway is that driving engine is supplied with methyl alcohol.
Said monitoring methanol fuel oil system charge oil pressure is accomplished by methanol fuel oil system pressure sensor, and said monitoring gasoline fuel oil system charge oil pressure is accomplished by gasoline fuel oil system pressure sensor.
For example the normal fuel injection pressure set points is 350kPa, if pressure is lower than 280kPa, explains that feed apparatus breaks down, and electronic control unit switches another kind of feed apparatus work, has effectively guaranteed the safety in the gasoline driving process.
Certainly can also set normal fuel injection pressure according to actual needs is other numerical value, when actual charge oil pressure be lower than normal value 20% the time, explain that feed apparatus breaks down.
Need to prove that the method for the invention also comprises the monitoring throttle opening, send aperture signal to said electronic control unit; The monitoring speed of a motor vehicle is sent GES to said electronic control unit.
When said throttle opening is zero and the said speed of a motor vehicle when being zero, said electronic control unit sending controling instruction is to the gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
Switch when this method is used to stop, this moment, the work of gasoline feed apparatus was merely several seconds.During parking be: with gasoline driving engine is washed away, avoid having retained methanol solution, soak for a long time, and cause corrosion to material at each parts of engine interior with the gasoline feed apparatus style of work.
Correspondingly, the present invention also provides a kind of automobile, and said automobile comprises like above-mentioned automotive control system.Automotive control system according to the invention comprises gas supply device, methyl alcohol feedway and fuel supply control system, and said fuel supply control system comprises monitoring means and electronic control unit.
The water temperature of said monitoring means monitoring driving engine is sent said temperature to said electronic control unit.Monitoring means is a cooling-water temperature transmitter among the present invention.
Said electronic control unit is judged when said water temperature surpasses design temperature, is used for sending controling instruction to said methyl alcohol feedway, and said methyl alcohol feedway is used to driving engine and supplies with methyl alcohol; Otherwise said electronic control unit is used for sending controling instruction to said gas supply device, and said gas supply device is used to driving engine and supplies with gasoline.
Automobile of the present invention provides independently methyl alcohol feedway and gas supply device; Said fuel supply control system uses methanol fuel through the water temperature Control of Automobile of monitoring driving engine; When the water temperature of said driving engine surpasses preset value; It is that driving engine provides methyl alcohol that said fuel supply control system is controlled said methyl alcohol feedway, stops to provide gasoline, thereby realizes the switching of two kinds of feed apparatus mode of operations.Efficiently solve degradation problem under the vehicle dynamic quality that the cold-starting difficulty that the automotive use methanol fuel brings, cold machine discharging difference and methyl alcohol and gasoline layering bring.
Said automobile also comprises the oil mass read out instrument, is used to show the liquid level of said gasoline and methyl alcohol.
Referring to Fig. 4, this figure is an oil mass read out instrument scheme drawing of the present invention.
Said oil mass read out instrument 44 comprises methyl alcohol oil measurer 401 and gasoline gauge 402.
Said fuel supply control system comprises the methanol solution level sensor; Said methanol solution level sensor is measured the liquid level of methyl alcohol in the said methyl alcohol feedway; Send said liquid level to said fuel supply control device, said fuel supply control device is controlled said methyl alcohol oil measurer 401 and is shown said liquid level.Can know through said methyl alcohol oil measurer 401 whether the oil mass of finding out methyl alcohol is sufficient, when deficiency, the methyl alcohol of in time annotating.Simultaneously, the methanol solution level sensor is sent to electronic control unit with liquid level signal, and electronic control unit switches the work of gas supply device.
In like manner; Said fuel supply control system also comprises the gasoline level sensor; Said gasoline level sensor is measured the liquid level of gasoline in the said gas supply device; Send said liquid level to said fuel supply control device, said fuel supply control device is controlled said gasoline gauge 402 and is shown said liquid level.Can know through said gasoline gauge 402 whether the oil mass of finding out gasoline is sufficient, when deficiency, the gasoline of in time annotating.Simultaneously, the gasoline level sensor is sent to electronic control unit with liquid level signal, and electronic control unit switches the work of methyl alcohol feedway.
Need to prove that above-mentioned automobile also comprises the warning device when said methyl alcohol or gasoline low on fuel.Be respectively methyl alcohol annunciator and gasoline annunciator.Specify the flow process that realizes that low on fuel is reported to the police below in conjunction with accompanying drawing 4 and accompanying drawing 5.
Referring to Fig. 5, when being methyl alcohol low on fuel of the present invention, realizes in this figure the diagram of circuit of reporting to the police.May further comprise the steps.
S501: methanol solution level sensor monitoring methyl alcohol liquid level;
S502: send said liquid level signal to said fuel supply control system;
S503: when said fuel supply control system confirms that said methyl alcohol liquid level is lower than minimum liquid level;
S504: said electronic control unit is used for sending controling instruction to gas supply device, and said gas supply device is that driving engine is supplied with gasoline; While sending controling instruction to methyl alcohol annunciator, said methyl alcohol annunciator are used for reporting to the police.
Referring to Fig. 6, when being gasoline low on fuel of the present invention, realizes in this figure the diagram of circuit of reporting to the police.May further comprise the steps.
S601: gasoline level sensor monitoring gasoline liquid level;
S602: send said liquid level signal to said fuel supply control system;
S603: when said fuel supply control system confirms that said gasoline liquid level is lower than minimum liquid level;
S604: said electronic control unit sending controling instruction is to the methyl alcohol feedway, and said methyl alcohol feedway is that driving engine is supplied with methyl alcohol; While sending controling instruction to gasoline annunciator, said gasoline annunciator are used for reporting to the police.
Automobile according to the invention also comprises first indicating device and second indicating device, and referring to Fig. 7, this figure is methanol gasoline dual-fuel automobile first indicating device of the present invention and the second indicating device scheme drawing.In running order when said methyl alcohol feedway, when being the driving engine supply methyl alcohol of automobile, the indicator lamp of said first indicating device 701 is bright.When said gas supply device was in running order, the driving engine that is automobile provided gasoline, and the indicator lamp of said second indicating device 702 is bright.Said indicating device can be light-emitting diode, also can be the indicator lamp of other types.
Need to prove that automobile according to the invention also comprises gauge panel, referring to Fig. 8, this figure is the gauge panel scheme drawing of methanol gasoline dual-fuel automobile of the present invention.Average speed indicator 801, engine speed indicator 802 are housed on the said gauge panel 88, are used to show water thermometer 803, and the mileage meter 804 of transmitting set water temperature, also have on the said water thermometer 803 when the water temperature annunciator of water temperature during above the highest water temperature value.
The oil mass read out instrument that automobile according to the invention comprises, warning device, first indicating device, second indicating device and all kinds of instrument; Improved the safety of automobile; Navigating mate can be through said apparatus and the clear running state of understanding automobile of instrument; In time the emergency state is reacted, avoid occurring various faults.
Two kinds of oil mass read out instruments of methyl alcohol according to the invention and gasoline, warning device, first indicating device, second indicating device and said gauge panel integrate, and form the integrated instrument.Can certainly according to actual needs said oil mass read out instrument, warning device, first indicating device, second indicating device and said gauge panel be provided with alone.
Automobile according to the invention also comprises methyl alcohol and Fuel Petroleum vapor recovery system, reclaims methanol vapor or gasoline vapors to said driving engine.
The fuel vapo(u)r regenerative apparatus with in the engine working process because temperature, pressure factor; The fuel vapo(u)r that produces in the Fuel Tank, through canister adsorb, desorption, send driving engine again back to and burn; Avoid the fuel vaporization pollution, reduced the vehicle pollutant emission.
Methyl alcohol feedway according to the invention and said gas supply device preferred embodiment are a shared cover fuel vapo(u)r regenerative apparatus; The methanol fuel steam is through methyl alcohol Tipping valve, fuel vaporization reclaim line; Get into canister to the fuel vapo(u)r adsorption orifice; Through the effect of canister active carbon, fresh air, methanol vapor goes out canister by fuel vapo(u)r desorption mouth, introduces engine chamber through CanCV Canister Control Valve and burns.
Gasoline vapors is through gasoline Tipping valve, fuel vaporization reclaim line; Get into canister to the fuel vapo(u)r adsorption orifice; Through the effect of canister active carbon, fresh air, gasoline vapors goes out canister by fuel vapo(u)r desorption mouth, introduces engine chamber through CanCV Canister Control Valve and burns.
Need to prove, the vapor recovery of the said methyl alcohol of the embodiment of the invention and two kinds of fuel of gasoline, a shared cover fuel vapo(u)r regenerative apparatus connects through a triple valve.Certainly, also can design two as required and overlap independently fuel vapo(u)r regenerative apparatus, be respectively methanol fuel vapor recovery system and Fuel Petroleum vapor recovery system.
Said automobile also comprises shifter, is used to force to switch the supply condition of methyl alcohol and two kinds of fuel of gasoline.When methyl alcohol or gasoline low on fuel, forcing to switch another kind of fuel supply system is the automobile fueling.When because limit the region, in the time of can't annotating methyl alcohol or gasoline, also can utilize said shifter, forcing to switch another kind of fuel supply system is the automobile fueling.
Methanol gasoline dual-fuel automobile according to the invention provides independently methyl alcohol feedway and gas supply device, has solved degradation problem under the vehicle dynamic quality that the cold-starting difficulty that automotive use methyl alcohol or methanol gasoline mixed fuel bring, cold machine discharging difference and methyl alcohol and gasoline layering bring.Said automobile has also been installed complete demonstration and indicating device, makes navigating mate can intuitively clearly grasp the operating condition of automobile, in time makes a response, and avoids the generation of fault, has improved the safety of car load.
The above only is preferred embodiment of the present invention, is not the present invention is done any pro forma restriction.Though the present invention discloses as above with preferred embodiment, yet be not in order to limit the present invention.Any those of ordinary skill in the art; Do not breaking away under the technical scheme scope situation of the present invention; All the method for above-mentioned announcement capable of using and technology contents are made many possible changes and modification to technical scheme of the present invention, or are revised as the equivalent embodiment of equivalent variations.Therefore, every content that does not break away from technical scheme of the present invention, all still belongs in the scope of technical scheme protection of the present invention any simple modification, equivalent variations and modification that above embodiment did according to technical spirit of the present invention.
Claims (17)
1. an automotive control system is characterized in that, comprises gas supply device, methyl alcohol feedway and fuel supply control system, and said fuel supply control system comprises monitoring means and electronic control unit;
Said monitoring means is used to monitor the water temperature of driving engine, sends said temperature to said electronic control unit;
Said electronic control unit is judged when said water temperature surpasses design temperature, is used for sending controling instruction to said methyl alcohol feedway, and said methyl alcohol feedway is used to driving engine and supplies with methyl alcohol; Otherwise said electronic control unit is used for sending controling instruction to said gas supply device, and said gas supply device is used to driving engine and supplies with gasoline;
Also comprise throttle position sensor and car speed sensor, said throttle position sensor is used to monitor throttle opening, sends aperture signal to said electronic control unit;
Said car speed sensor is used to monitor the speed of a motor vehicle, sends GES to said electronic control unit;
When said throttle opening is zero and the said speed of a motor vehicle when being zero, said electronic control unit sending controling instruction is to the gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
2. system according to claim 1 is characterized in that, said monitoring means is a cooling-water temperature transmitter.
3. system according to claim 1 is characterized in that said fuel supply control system also comprises the methanol solution level sensor, is used for measuring the liquid level of said methyl alcohol feedway methyl alcohol, sends liquid level signal to said electronic control unit;
When said methyl alcohol liquid level is lower than when setting minimum methyl alcohol liquid level, said electronic control unit is used for sending controling instruction to gas supply device, and said gas supply device is that driving engine is supplied with gasoline; While sending controling instruction to methyl alcohol annunciator, said methyl alcohol annunciator are used for reporting to the police.
4. system according to claim 1 is characterized in that said fuel supply control system also comprises the gasoline level sensor, is used for measuring the liquid level of said gas supply device gasoline, sends liquid level signal to said electronic control unit;
When said gasoline liquid level is lower than when setting minimum gasoline liquid level, said electronic control unit is used for sending controling instruction to methyl alcohol feedway, and said methyl alcohol feedway is that driving engine is supplied with methyl alcohol; While sending controling instruction to gasoline annunciator, said gasoline annunciator are used for reporting to the police.
5. system according to claim 1 is characterized in that, said fuel supply control system also comprises methanol fuel oil system pressure sensor, is used to monitor methanol fuel oil system charge oil pressure, sends pressure signal to said electronic control unit;
When pressure during less than methyl alcohol charge oil pressure setting value, said electronic control unit is used for sending controling instruction to gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
6. system according to claim 1 is characterized in that, said fuel supply control system also comprises gasoline fuel oil system pressure sensor, is used to monitor gasoline fuel oil system charge oil pressure, sends pressure signal to said electronic control unit;
When pressure during less than gasoline charge oil pressure setting value, said electronic control unit is used for sending controling instruction to methyl alcohol feedway, and said methyl alcohol feedway is that driving engine is supplied with methyl alcohol.
7. system according to claim 1 is characterized in that, said gas supply device and said methyl alcohol feedway homonymy or be arranged symmetrically on the floor of automobile.
8. an automobile control method is characterized in that, may further comprise the steps:
The water temperature of monitoring driving engine is sent said water temperature to electronic control unit;
When said water temperature surpassed design temperature, electronic control unit sending controling instruction to methyl alcohol feedway, methyl alcohol feedway were that driving engine is supplied with methyl alcohol; Otherwise sending controling instruction to gas supply device, gas supply device are driving engine supplies with gasoline;
The monitoring throttle opening sends aperture signal to said electronic control unit;
The monitoring speed of a motor vehicle is sent GES to said electronic control unit;
When said throttle opening is zero and the said speed of a motor vehicle when being zero, said electronic control unit sending controling instruction is to the gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
9. method according to claim 8 is characterized in that, also comprises the liquid level of measuring methyl alcohol, and when said liquid level is lower than when setting minimum methyl alcohol liquid level, sending controling instruction to gas supply device, said gas supply device are that driving engine is supplied with gasoline; While sending controling instruction to methyl alcohol annunciator, said methyl alcohol annunciator are used for reporting to the police.
10. method according to claim 8 is characterized in that, also comprises the liquid level of measuring gasoline, and when said liquid level is lower than when setting minimum gasoline liquid level, sending controling instruction to methyl alcohol feedway, said methyl alcohol feedway are that driving engine is supplied with methyl alcohol; While sending controling instruction to gasoline annunciator, said gasoline annunciator are used for reporting to the police.
11. method according to claim 8 is characterized in that, also comprises monitoring methanol fuel oil system charge oil pressure, sends pressure signal to said electronic control unit;
When pressure during less than methyl alcohol charge oil pressure setting value, said electronic control unit is used for sending controling instruction to gas supply device, and said gas supply device is that driving engine is supplied with gasoline.
12. method according to claim 8 is characterized in that, also comprises monitoring gasoline fuel oil system charge oil pressure, sends pressure signal to said electronic control unit;
When pressure during less than gasoline charge oil pressure setting value, said electronic control unit is used for sending controling instruction to methyl alcohol feedway, and said methyl alcohol feedway is that driving engine is supplied with methyl alcohol.
13. an automobile is characterized in that, said automobile comprises each described automotive control system like claim 1-7.
14. automobile according to claim 13 is characterized in that, said automobile also comprises the oil mass read out instrument, is used to show the liquid level of said methyl alcohol and gasoline.
15. automobile according to claim 13 is characterized in that, said automobile also comprises first indicating device and second indicating device, and said first indicating device is used to show the mode of operation of methyl alcohol feedway; Said second indicating device is used to show the mode of operation of gas supply device.
16. automobile according to claim 13 is characterized in that, said automobile also comprises methyl alcohol and Fuel Petroleum vapor recovery system, is used to reclaim methanol vapor or gasoline vapors to said driving engine.
17. automobile according to claim 13 is characterized in that, said automobile also comprises shifter, is used to force to switch the mode of operation of methyl alcohol feedway and gas supply device.
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| CN200810041092A CN101638053B (en) | 2008-07-28 | 2008-07-28 | Automobile control system, method and automobile |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2011075909A1 (en) * | 2009-12-25 | 2011-06-30 | 上海华普汽车有限公司 | Control system for multiple fuel vehicle and vehicle |
| CN101984234A (en) * | 2010-11-11 | 2011-03-09 | 东莞传动电喷科技有限公司 | Control method of methanol/gasoline dual-fuel engine system |
| CN102022196A (en) * | 2010-12-07 | 2011-04-20 | 东莞传动电喷科技有限公司 | Controller of novel alternative fuel internal combustion engine |
| CN102330996B (en) * | 2011-04-19 | 2013-11-06 | 北京航空航天大学 | Ignition and temperature automatic control method for aviation kerosene gas generator |
| CN106837568A (en) * | 2017-01-06 | 2017-06-13 | 浙江吉利控股集团有限公司 | A kind of single oil rail double fuel automatic switching control system |
| CN110630387A (en) * | 2019-09-30 | 2019-12-31 | 潍柴动力股份有限公司 | Method, device and system for switching dual-fuel engine |
| CN112523879A (en) * | 2020-11-26 | 2021-03-19 | 浙江吉利控股集团有限公司 | Dual-fuel control method and system for vehicle and vehicle |
| CN112855359A (en) * | 2021-01-13 | 2021-05-28 | 浙江吉利控股集团有限公司 | Engine control method and device, vehicle and computer storage medium |
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Effective date of registration: 20220216 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Address before: 201501 Shanghai city Jinshan District Fengjing Industrial Park Patentee before: SHANGHAI MAPLE AUTOMOBILE Co.,Ltd. |