CN108979875A - A method of promoting air nozzle low-temperature working performance - Google Patents

A method of promoting air nozzle low-temperature working performance Download PDF

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Publication number
CN108979875A
CN108979875A CN201810926735.5A CN201810926735A CN108979875A CN 108979875 A CN108979875 A CN 108979875A CN 201810926735 A CN201810926735 A CN 201810926735A CN 108979875 A CN108979875 A CN 108979875A
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CN
China
Prior art keywords
air nozzle
gas
stage
mode
peak
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201810926735.5A
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Chinese (zh)
Inventor
全书鹏
李东敦
邓永娣
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Chery Automobile Co Ltd
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Chery Automobile Co Ltd
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Filing date
Publication date
Application filed by Chery Automobile Co Ltd filed Critical Chery Automobile Co Ltd
Priority to CN201810926735.5A priority Critical patent/CN108979875A/en
Publication of CN108979875A publication Critical patent/CN108979875A/en
Pending legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0602—Control of components of the fuel supply system
    • F02D19/0613—Switch-over from one fuel to another
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0642—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions
    • F02D19/0647—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels at least one fuel being gaseous, the other fuels being gaseous or liquid at standard conditions the gaseous fuel being liquefied petroleum gas [LPG], liquefied natural gas [LNG], compressed natural gas [CNG] or dimethyl ether [DME]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D19/00—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures
    • F02D19/06—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed
    • F02D19/0639—Controlling engines characterised by their use of non-liquid fuels, pluralities of fuels, or non-fuel substances added to the combustible mixtures peculiar to engines working with pluralities of fuels, e.g. alternatively with light and heavy fuel oil, other than engines indifferent to the fuel consumed characterised by the type of fuels
    • F02D19/0649—Liquid fuels having different boiling temperatures, volatilities, densities, viscosities, cetane or octane numbers
    • F02D19/0657—Heavy or light fuel oils; Fuels characterised by their impurities such as sulfur content or differences in grade, e.g. for ships
    • 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

Abstract

The invention discloses a kind of methods for promoting air nozzle low-temperature working performance, are applied to gasoline and CNG dual-fuel vehicle, working method includes fuel oil mode and combustion gas mode；Fuel oil mode is converted into combustion gas mode to be known as cutting gas；In the case where not cutting the fuel oil mode state of gas, and meet and preheat enabled condition, then air nozzle is preheated, the preheating mode is: the lesser driving current for being less than firing current is applied to air nozzle, air nozzle is driven, air nozzle is still in closed state.By adopting the above technical scheme, solve that winter low temperature environment incision gas is difficult, cuts gas and stop working, cut catch fire after gas, the problems such as revolving speed is shaken；While promoting vehicle economic benefit, also promote and ensure that the low temperature of vehicle burns gas performance.

Description

A method of promoting air nozzle low-temperature working performance
Technical field
The invention belongs to the technical fields of Vehicle Electronic Control.More particularly it relates to a kind of promotion gasoline and CNG The method of dual-fuel vehicle air nozzle low-temperature working performance.
Background technique
Since natural gas resource is abundant, price is also much lower with respect to gasoline, thus taxi market be substantially it is dual-purpose Fuel vehicle, using natural gas as main output power.But the impurity content in natural gas is more, and contains a certain proportion of water Point.After air nozzle is used for a long time, there are certain impurity deposition and attachment in surface, and the unlatching resistance of air nozzle becomes under low temperature environment Greatly, after there is the problem of condensing water freezing, it is bigger to open resistance.
Traditional air nozzle control program objectively there is following problems:
1, in order to guarantee that low temperature burns gas performance, the temperature threshold of CNG switching is generally set in 5 DEG C or so.Low temperature in winter Under environment, the rising of CNG temperature is slower, and switching condition is difficult to meet, and causes the oil firing time longer, and the operation cost of user increases；
2, winter low temperature environment incision gas is difficult, and it is flame-out to cut gas, cut catch fire after gas, the problems such as revolving speed is shaken
3, after the temperature threshold for reducing CNG switching, and it is flame-out often to occur cutting gas, catches fire after cutting gas, revolving speed is shaken The problems such as, client complains there are still serious.
Summary of the invention
The present invention provides a kind of method for promoting air nozzle low-temperature working performance, and the purpose is to realize the suitable of dual-fuel automobile Li Qie gas.
To achieve the goals above, the technical scheme adopted by the invention is as follows:
The method of promotion air nozzle low-temperature working performance of the invention, is applied to gasoline and CNG dual-fuel vehicle, work Mode includes fuel oil mode and combustion gas mode；Fuel oil mode is converted into combustion gas mode to be known as cutting gas；In the fuel oil for not cutting gas Under mode state, and meet and preheat enabled condition, then air nozzle is preheated, the preheating mode is: right Air nozzle applies the lesser driving current for being less than firing current, drives to air nozzle, air nozzle is still in closing State.
Within the described short time cut after gas, in the drive current range that air nozzle allows, biggish drive can be applied Streaming current, then smooth decaying, revert to normal control standard, to ensure the normal table work of air nozzle.
The preheating enables condition:
1), CNG hardware fault-free: it is satisfiable for cutting gas bar part；If there are failures for gas circuit hardware, not into Row air nozzle preheating is necessary；
2), can be preheated after vehicle launch: when starting, battery will appear big pressure drop, in order to the greatest extent may be used Electric appliance load and power consumption at this time can be reduced, guarantee the smooth and reliable of starting, do not allow to be heated during vehicle launch；
3), threshold value of the natural gas temperature lower than setting: the threshold value passes through program setting；
4), only need to carry out the heating of air nozzle in the state of fuel oil mode: in the normal operation after cutting gas, air nozzle It has been in normal driving logic, it is no longer necessary to heat.
The 3 of condition are enabled in the heating) in, the threshold value set is 0 DEG C.
Mainly there are two the stages for air nozzle driving:
First stage is the PEAK stage, and duration is denoted as peak time, by adjusting the duration for demarcating the stage, The peak point current of realization demand, to realize the reliable unlatching of air nozzle；
Second stage is the HOLD stage, and duration can be denoted as hold time, this stage keeps a lesser driving current, Ensure that air nozzle is in the open state, after the HOLD stage, air nozzle power-off is closed；The jet to be realized of system Pulsewidth is the sum of peak time and hold time；
To the mode of air nozzle computer heating control:
After heating enabled condition satisfaction, fuel injection pulsewidth is converted into corresponding jet pulsewidth, as air nozzle heating process Driving signal；In the peak stage, for the quick needs for opening nozzle, duty ratio is set as 100%, also both MAP_ Value in DuCyPeak_Ub_TaNg, driving current is increased rapidly with the extension of time at this time；
Alternatively, in air nozzle heating, fully phasing out the peak stage for the easy implementation of control function, that is, setting Peak time=0, it is the HOLD stage that entire jet pulsewidth, which is all handled, therefore, is by the driving current for controlling the HOLD stage Can, the pwm signal in this stage was also both controlled, heating duty ratio is set in 20% hereinafter, controlling driving current in 1A or less.
The enabled condition of gas of cutting includes following two:
1), CNG force start is handled in conjunction with the judgement of synchronous mark position, rising edge triggering；
2), the oil-break switching in vehicle operation, is handled in conjunction with oil-break flag bit judgement, failing edge triggering.
The present invention by adopting the above technical scheme, solve that winter low temperature environment incision gas is difficult, cuts gas and stop working, cut gas after occur Catch fire, revolving speed shake the problems such as；While promoting vehicle economic benefit, also promote and ensure that the low temperature of vehicle burns gas Energy.
Detailed description of the invention
Content shown in attached drawing is briefly described as follows:
Fig. 1 is that air nozzle of the invention drives logic chart；
Fig. 2 is that algorithm logic of the invention realizes figure.
Specific embodiment
Below against attached drawing, by the description of the embodiment, making to a specific embodiment of the invention further details of Illustrate, to help those skilled in the art to have more complete, accurate and deep reason to inventive concept of the invention, technical solution Solution.
Driving logic of the invention as depicted in figs. 1 and 2 and algorithm realize that functional structure, the present invention are to promote air nozzle The method of low-temperature working performance is applied to gasoline and CNG dual-fuel vehicle, and working method includes fuel oil mode and combustion gas mould Formula；Fuel oil mode is converted into combustion gas mode to be known as cutting gas.
Variable in algorithm logic of the invention is as shown in the table:
Table 1 --- variable declaration
Serial number Variable name Explanation Types of variables Unit
1 E_CngError CNG hardware fault flag bit Input -
2 B_StaEnd Start end mark position Input -
3 TaNg Natural gas temperature Input ℃
4 Ld Engine load Input %
5 B_Syn Synchronous mark position Input -
6 B_CngState CNG switches enabler flags position Input -
7 B_Fof Oil-break flag bit Input -
8 Ub_b Battery voltage Input V
9 VAL_TaNgEnHtCngInj The CNG temperature threshold of air nozzle heating Demarcate variable ℃
10 VAL_TimePeak Filtering time Demarcate variable s
11 MAP_PeakTimeLast_TaNg_Ld The duration in PEAK stage Calibration curve ms
12 MAP_PeakTimeIni_TaNg_Ld Switch the duration (initialization value) in moment PEAK stage Calibration curve ms
13 MAP_DuCyHold_Ub_TaNg Duty ratio when normal driving Calibration curve %
14 MAP_DuCyHoldHtCng_Ub_TaNg Air nozzle heating process duty ratio Calibration curve %
15 MAP_DuCyPeak_Ub_TaNg PEAK stage duty ratio Calibration curve %
16 B_EnHtCngInj Air nozzle heats enabler flags position Output -
17 peaktime The duration in air nozzle PEAK stage Output ms
18 DuCyHold HOLD stage pwm signal Output %
19 DuCyPeak PEAK stage pwm signal Output %
The present invention is using the autonomous EMS system of Cherry as platform, using mature and cheap gasoline ECU controller, simultaneously Drive fuel injector and CNG air nozzle.
One, in order to overcome the drawbacks of the prior art, realize that the goal of the invention for smoothly cutting gas of dual-fuel automobile, the present invention are adopted The technical solution taken are as follows:
As shown in Figure 1, the method for promotion air nozzle low-temperature working performance of the invention, in the fuel oil mode shape for not cutting gas Under state, and meet and preheat enabled condition, then air nozzle is preheated, the preheating mode is: to air nozzle Apply the lesser driving current for being less than firing current, air nozzle is driven, air nozzle is still in closed state.
It is difficult for winter low temperature environment incision gas, cut gas stop working, cut catch fire after gas, revolving speed shake the problems such as, Invention provide the method for above-mentioned promotion air nozzle low-temperature working performance, while promoting vehicle economic benefit, also promoted with It ensure that the low temperature of taxi burns gas performance.
It introduces air nozzle pre-add heat function under low temperature environment: under oil firing state, a lesser drive still being applied to air nozzle Streaming current drives air nozzle, and since driving current is smaller, air nozzle is still in closed state.By after a certain period of time, By the heat that itself is generated in air nozzle galvanization, condensed water ice formation issues can be effectively solved, reduces and opens resistance, are protected Demonstrate,prove the unlatching reliability of air nozzle.
Since driving current is smaller, air nozzle is still in closed state；By after a certain period of time, being powered by air nozzle The heat itself generated in the process can effectively solve condensed water ice formation issues, reduce and open resistance, guarantee the unlatching of air nozzle Reliability.
Two, further:
Within the described short time cut after gas, in the drive current range that air nozzle allows, biggish drive can be applied Streaming current, then smooth decaying, revert to normal control standard, to ensure the normal table work of air nozzle.
Three, preheating control function is realized:
Driving current based on air nozzle be only greater than a certain numerical value could open and air nozzle be powered driving after generate heat Brass tacks, present inventive concept: can during oil firing before cutting gas to air nozzle apply lesser driving current (this Electric current must assure that can not all open air nozzle under any circumstance), air nozzle temperature will gradually rise, and eliminate condensed water knot While ice, the unlatching resistance of air nozzle can also be reduced to a certain extent.
Four, the preheating, which enables condition, is:
1, CNG hardware fault-free: it is satisfiable for cutting gas bar part；If there are failures for gas circuit hardware, not into Row air nozzle preheating is necessary；
2, can be preheated after vehicle launch: when starting, battery will appear big pressure drop, in order to as far as possible Reduce electric appliance load at this time and power consumption, guarantees the smooth and reliable of starting, do not allow to be heated during vehicle launch；
3, threshold value of the natural gas temperature lower than setting: natural gas temperature is lower than a certain threshold value, can pass through scalar quantity:
VAL_TaNgEnHtCngInj setting, there is the meaning and necessity of heating at 0 DEG C generally with lower section.
4, only need to carry out the heating of air nozzle in the state of fuel oil mode: in the normal operation after cutting gas, air nozzle It has been in normal driving logic, it is no longer necessary to heat.If heating at this time, certainly will influence whether air nozzle normally open and It closes, the serious problems such as shake, flame-out of catching fire occurs.
The 3 of condition are enabled in the heating) in, the threshold value set is 0 DEG C.
Five, air nozzle drives logic:
As shown in Figure 1, the curve of the driving current of air nozzle is marked in figure.
Mainly there are two the stages for air nozzle driving:
First stage is the PEAK stage, and duration is denoted as peak time, by adjusting the duration for demarcating the stage, The peak point current (general control is in 4A or so) of realization demand, to realize the reliable unlatching of air nozzle；
Second stage is the HOLD stage, and duration can be denoted as hold time, this stage keeps a lesser driving current (general control is in 1.5A or so), it is ensured that air nozzle is in the open state；
After the HOLD stage, air nozzle power-off is closed；The jet pulsewidth to be realized of system be peak time and The sum of holdtime；
Six, to the mode of air nozzle computer heating control:
After heating enabled condition satisfaction, fuel injection pulsewidth is converted into corresponding jet pulsewidth, as air nozzle heating process Driving signal；In the peak stage, for the quick needs for opening nozzle, duty ratio is set as 100%, also both MAP_ Value in DuCyPeak_Ub_TaNg, driving current is increased rapidly with the extension of time at this time；
Alternatively, in air nozzle heating, fully phasing out the peak stage for the easy implementation of control function, that is, setting Peak time=0, it is the HOLD stage that entire jet pulsewidth, which is all handled, therefore, is by the driving current for controlling the HOLD stage Can, the pwm signal in this stage was also both controlled, heating duty ratio is set in 20% hereinafter, controlling driving current in 1A or less.
Heating duty ratio can be determined according to actual experiment result, generally control driving current in 1A or less, duty Than being generally set to 20% or less.
Seven, the difference of air nozzle computer heating control and normal driving is:
1, when normal driving:
The duration peak time in PEAK stage by:
MAP_PeakTimeIni_TaNg_Ld and MAP_PeakTimeLast_TaNg_Ld setting；
When air nozzle heats:
Peak time=0.
2, when normal driving:
HOLD stage duty ratio walks the value in MAP_DuCyHold_Ub_TaNg, generally 30% or so；
When air nozzle heats: walking the value in MAP_DuCyHoldHtCng_Ub_TaNg.
Eight, air nozzle peak value comparison method
Further, within the short time after low temperature cuts gas, in order to ensure the reliable unlatching of air nozzle 100%, in jet In the drive current range that mouth allows, increases driving current when cutting gas as far as possible, also both extended peak time, and then revert to Normal control range, this function are realized by filter.
1, meeting the moment for cutting gas bar part, the peak time of air nozzle is initialized as biggish value, passes through MAP_ PeakTimeIni_TaNg_Ld setting, can be by peak value comparison method in 5.5A or so.
Initialization condition, there are two types of the enabled conditions for also both having cut gas:
One is CNG force starts, handle in conjunction with the judgement of synchronous mark position, rising edge triggering；
Another kind is the oil-break switching in vehicle operation, is handled in conjunction with oil-break flag bit judgement, failing edge triggering.
2, die-away time, also both filtering time can be set by scalar quantity VAL_TimePeak.
3, finally the peak point current of control air nozzle driving revert to critical field, passes through MAP_PeakTimeLast_ TaNg_Ld setting, by peak value comparison method in 4A or so.
The present invention is exemplarily described in conjunction with attached drawing above, it is clear that the present invention implements not by aforesaid way Limitation, as long as the improvement for the various unsubstantialities that the inventive concept and technical scheme of the present invention carry out is used, or without changing It is within the scope of the present invention into the conception and technical scheme of the invention are directly applied to other occasions.

Claims (6)

1. a kind of method for promoting air nozzle low-temperature working performance, is applied to gasoline and CNG dual-fuel vehicle, working method packet Include fuel oil mode and combustion gas mode；Fuel oil mode is converted into combustion gas mode to be known as cutting gas；It is characterized by: not cutting gas Under fuel oil mode state, and meet and preheat enabled condition, then air nozzle is preheated, the preheating mode Be: to air nozzle apply one be less than firing current lesser driving current, air nozzle is driven, air nozzle still in Closed state.
2. the method described in accordance with the claim 1 for promoting air nozzle low-temperature working performance, it is characterised in that: cut gas in described In short time afterwards, in the drive current range that air nozzle allows, biggish driving current can be applied, then smooth decaying, It is revert to normal control standard, to ensure the normal table work of air nozzle.
3. the method described in accordance with the claim 1 for promoting air nozzle low-temperature working performance, it is characterised in that: the preheating Enabled condition is:
1), CNG hardware fault-free: it is satisfiable for cutting gas bar part；If there are failures for gas circuit hardware, do not sprayed Gas nozzle preheating is necessary；
2), can be preheated after vehicle launch: when starting, battery will appear big pressure drop, in order to subtract as far as possible Small electric appliance load and power consumption at this time guarantees the smooth and reliable of starting, does not allow to be heated during vehicle launch；
3), threshold value of the natural gas temperature lower than setting: the threshold value passes through program setting；
4), only need to carry out the heating of air nozzle in the state of fuel oil mode: in the normal operation after cutting gas, air nozzle has been located In normally driving logic, it is no longer necessary to heat.
4. the method described in accordance with the claim 3 for promoting air nozzle low-temperature working performance, it is characterised in that: in the heating The 3 of enabled condition) in, the threshold value set is 0 DEG C.
5. the method described in accordance with the claim 3 for promoting air nozzle low-temperature working performance, it is characterised in that:
Mainly there are two the stages for air nozzle driving:
First stage is the PEAK stage, and duration is denoted as peak time, by adjusting the duration for demarcating the stage, can be realized The peak point current of demand, to realize the reliable unlatching of air nozzle；
Second stage is the HOLD stage, and duration can be denoted as hold time, this stage keeps a lesser driving current, it is ensured that Air nozzle is in the open state, and after the HOLD stage, air nozzle power-off is closed；The jet pulsewidth to be realized of system The as sum of peak time and hold time；
To the mode of air nozzle computer heating control:
After heating enabled condition satisfaction, fuel injection pulsewidth is converted into corresponding jet pulsewidth, the drive as air nozzle heating process Dynamic signal；In the peak stage, for the quick needs for opening nozzle, duty ratio is set as 100%, also both MAP_DuCyPeak_ Value in Ub_TaNg, driving current is increased rapidly with the extension of time at this time；
Alternatively, in air nozzle heating, fully phase out the peak stage for the easy implementation of control function, i.e. setting peak Time=0, it is the HOLD stage that entire jet pulsewidth, which is all handled, therefore, by controlling the driving current in HOLD stage, Both the pwm signal in this stage had been controlled, heating duty ratio is set in 20% hereinafter, controlling driving current in 1A or less.
6. the method described in accordance with the claim 3 for promoting air nozzle low-temperature working performance, it is characterised in that: the gas of cutting makes Energy condition includes following two:
1), CNG force start is handled in conjunction with the judgement of synchronous mark position, rising edge triggering；
2), the oil-break switching in vehicle operation, is handled in conjunction with oil-break flag bit judgement, failing edge triggering.
CN201810926735.5A 2018-08-15 2018-08-15 A method of promoting air nozzle low-temperature working performance Pending CN108979875A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110044539A (en) * 2019-04-25 2019-07-23 大胜天成科技(惠州)有限公司 Obtain method, electronic pressure gage and the air charging system for being inflated tire true pressure value

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EP2071158A1 (en) * 2007-12-11 2009-06-17 Robert Bosch Gmbh Device for injecting gas into a combustion engine, a set of gas injector valves, method for operating gas injector valves
CN101595296A (en) * 2007-01-29 2009-12-02 罗伯特·博世有限公司 The method and apparatus of gas injection system operation that is used for the internal-combustion engine of gaseous fuel and liquid fuel work
CN102235255A (en) * 2010-04-20 2011-11-09 上海格令汽车电子有限公司 Method and system for solving problem of difficulty in opening of compressed natural gas (CNG) nozzle under low-temperature environment
CN205876521U (en) * 2016-07-04 2017-01-11 重庆重客汽车电子有限公司 Built -in drive air nozzle environment adaptive control system of ECU
CN108223165A (en) * 2016-12-12 2018-06-29 罗伯特·博世有限公司 For heating gas valve, the especially method and apparatus of fuel injector and there is the motor vehicle of the equipment

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Publication number Priority date Publication date Assignee Title
CN101595296A (en) * 2007-01-29 2009-12-02 罗伯特·博世有限公司 The method and apparatus of gas injection system operation that is used for the internal-combustion engine of gaseous fuel and liquid fuel work
EP2071158A1 (en) * 2007-12-11 2009-06-17 Robert Bosch Gmbh Device for injecting gas into a combustion engine, a set of gas injector valves, method for operating gas injector valves
CN102235255A (en) * 2010-04-20 2011-11-09 上海格令汽车电子有限公司 Method and system for solving problem of difficulty in opening of compressed natural gas (CNG) nozzle under low-temperature environment
CN205876521U (en) * 2016-07-04 2017-01-11 重庆重客汽车电子有限公司 Built -in drive air nozzle environment adaptive control system of ECU
CN108223165A (en) * 2016-12-12 2018-06-29 罗伯特·博世有限公司 For heating gas valve, the especially method and apparatus of fuel injector and there is the motor vehicle of the equipment

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110044539A (en) * 2019-04-25 2019-07-23 大胜天成科技(惠州)有限公司 Obtain method, electronic pressure gage and the air charging system for being inflated tire true pressure value
CN110044539B (en) * 2019-04-25 2021-02-05 大胜天成科技(惠州)有限公司 Method for acquiring true pressure value of inflated tire, electronic pressure gauge and inflation device

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Application publication date: 20181211