CN115467755B - Electric control method for double-nozzle fuel oil split injection of PFI engine - Google Patents
Electric control method for double-nozzle fuel oil split injection of PFI engine Download PDFInfo
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- CN115467755B CN115467755B CN202211251744.1A CN202211251744A CN115467755B CN 115467755 B CN115467755 B CN 115467755B CN 202211251744 A CN202211251744 A CN 202211251744A CN 115467755 B CN115467755 B CN 115467755B
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- 238000002347 injection Methods 0.000 title claims abstract description 246
- 239000007924 injection Substances 0.000 title claims abstract description 246
- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000000295 fuel oil Substances 0.000 title claims abstract description 12
- 239000003921 oil Substances 0.000 claims abstract description 61
- 239000000446 fuel Substances 0.000 claims abstract description 15
- 230000001360 synchronised effect Effects 0.000 claims abstract description 10
- 238000005507 spraying Methods 0.000 claims description 12
- 230000009977 dual effect Effects 0.000 claims description 2
- 238000005516 engineering process Methods 0.000 description 10
- 238000004364 calculation method Methods 0.000 description 5
- 239000000203 mixture Substances 0.000 description 3
- 238000000889 atomisation Methods 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 238000011217 control strategy Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010705 motor oil Substances 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D41/00—Electrical control of supply of combustible mixture or its constituents
- F02D41/30—Controlling fuel injection
- F02D41/3094—Controlling fuel injection the fuel injection being effected by at least two different injectors, e.g. one in the intake manifold and one in the cylinder
-
- 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
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Electrical Control Of Air Or Fuel Supplied To Internal-Combustion Engine (AREA)
Abstract
The invention provides an electric control method for double-nozzle fuel oil injection of a PFI engine, which comprises the following steps: the EMS system reads the logic calculated required oil injection pulse width and judges whether the required oil injection pulse width is 0; when the pulse width of the fuel injection of each nozzle is 0, the value of the fuel injection pulse width of each nozzle is 0; when the required oil injection pulse width is not 0, the system judges an oil injection mode; in the double-nozzle multiple synchronous injection mode, only the injection pulse width and the injection phase parameters of one-way and two-way nozzles of a reference cylinder are calculated, one-way nozzle injection parameters are assigned to two-way nozzles, and then the injection parameters of other cylinders are synchronously calculated based on fixed angle difference; in the double-nozzle single-time asynchronous injection mode, the injection pulse width and the injection phase of two paths of nozzles of a reference cylinder are calculated according to the fractional injection condition of the single-nozzle mode respectively, and then injection parameters of other cylinders are synchronously calculated based on fixed angle difference. The electric control method for the double-nozzle fuel oil injection of the PFI engine can simplify a logic structure, reduce the calculated amount and reduce the load of a CPU.
Description
Technical Field
The invention relates to an electric control method for double-nozzle fuel oil sub-injection of a PFI engine, which is applied to the technical field of automobile engines.
Background
At present, the air inlet injection technology (PFI) is one of the main technologies of fuel supply of modern internal combustion engines, and compared with the direct injection technology (GDI) in a cylinder, the air inlet injection technology (PFI) has the advantages of low hardware production cost, less particulate matter emissions, small engine oil dilution risk, difficulty in generating valve carbon deposit and the like, so that the air inlet injection technology (PFI) is widely applied to some low-end engines with small discharge capacity. The port injection technology (PFI) can mix fuel and fresh air in advance and then send the mixture into the cylinder for combustion, so that the uniformity of the mixture can directly influence the performance of the PFI engine.
In order to improve the atomization effect of port injection technology, currently advanced engine manufacturers have developed port single cylinder dual nozzle injection technology. The double-nozzle injection technology not only can realize wider fuel injection area and higher fuel atomization rate, but also can ensure that the installation position of the double nozzles is closer to the intake valve, thereby reducing the fuel adhesion of the intake duct and improving the economy of the engine. Because the PFI double-nozzle electric control injection technology needs to consider the injection quality and the injection phase calculation of each nozzle of each cylinder, if the fractional injection is involved, the fractional injection proportion of each nozzle of each cylinder needs to be calculated, the logic structure is complex, the workload is multiplied, and the burden of a CPU is increased.
Therefore, under the background that new functions are more and the memory of the control unit is insufficient at present, it is necessary to design a new electric control method for injecting fuel oil from two nozzles of the PFI engine to simplify logic so as to overcome the problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art, and provides an electric control method for double-nozzle fuel injection of a PFI engine, which can simplify a logic structure, reduce the calculated amount and reduce the load of a CPU.
The invention is realized in the following way:
the invention provides an electric control method for double-nozzle fuel oil sub-injection of a PFI engine, which comprises the following steps:
step one: the EMS system reads the logic calculated required oil injection pulse width and judges whether the required oil injection pulse width is 0; when the required oil injection pulse width is 0, the value of the oil injection pulse width of each nozzle is 0;
step two: when the required oil injection pulse width is not 0, the EMS system judges the oil injection mode: the method comprises the steps of identifying and judging a double-nozzle sub-synchronous injection mode and a double-nozzle single asynchronous injection mode by judging whether three Boolean-type variables of double-nozzle synchronous injection and multiple injection are supported;
in the double-nozzle multiple synchronous injection mode, only the injection pulse width and the injection phase parameters of one-way nozzles and two-way nozzles of a reference cylinder are needed to be calculated, one-way nozzle injection parameters are assigned to two-way nozzles, and then the injection parameters of other cylinders are synchronously calculated based on fixed angle difference;
in the double-nozzle single-time asynchronous injection mode, the injection pulse width and the injection phase of two paths of nozzles of a reference cylinder are calculated according to the fractional injection condition of the single-nozzle mode respectively, namely, the injection pulse width and the injection phase of one path of nozzles are the injection pulse width and the injection phase of single-nozzle single-time injection, the injection pulse width and the injection phase of two paths of nozzles are the injection pulse width and the injection phase of single-nozzle double-time injection, and then injection parameters of other cylinders are synchronously calculated based on fixed angle difference;
step three: and feeding back the fuel injection parameters to the ECU.
Further, in the second step, when the dual-nozzle sub-synchronous injection mode is adopted, the EMS system only calculates the injection parameters of one nozzle of the reference cylinder, and calculates actual injection pulse widths Split1 and Split2 of one nozzle and two nozzles at first:
Split1＝M*1/2*SplitInjectRatio/100+NullInjectTime；
Split2＝M*1/2*(100-SplitInjectRatio)/100+NullInjectTime；
wherein M is the total required fuel pulse width, split InjectRatio is the injection ratio of one injection, and NullInjectTime is the invalid injection time determined by the nozzle characteristics;
and then calculating the oil injection phase parameter of one path of nozzle:
Inject_StartPos_1＝InjectEndPos_1-(vvtoffst_1+ctsoffst_1)-Split1/t*u；
Inject_StartPos_2＝Inject_EndPos_2-(vvtoffst_2+ctsoffst_2)-Split2/t*u；
if |Inject_StartPos_2-InjectEndPos_1| < SplitMinDelta;
at this point project_startpos_2=project endpos_1+split mindelta;
the injection_StartPos_1 and the injection_StartPos_2 are respectively the initial angles of one spraying and two spraying, the injection EndPos_1 and the injection EndPos_2 are respectively the end angles of one spraying and two spraying, and the initial angles are the standard quantity of the rack; split mindelta is the split injection minimum interval; vvtoffst_1, ctsofst_1, and vvtoffst_2, ctsofst_2 are offset values of the end positions of one-injection and two-injection oil injection respectively, t is cycle time of one tooth of the crankshaft gear wheel rotation, and u is an angle corresponding to each tooth of the crankshaft;
and then, assigning one nozzle injection parameter to the two nozzles, and synchronously calculating injection parameters of other cylinders based on the fixed angle difference.
Further, in the second step, when the double-nozzle single asynchronous injection is performed, the injection pulse width and the injection phase of the two-way nozzle of the reference cylinder are respectively calculated according to the fractional injection condition of the single-nozzle mode, and the actual injection pulse width of the one-way nozzle and the two-way nozzle is calculated first:
M1＝M*SplitInjectRatio/100+NullInjectTime；
M2＝M*(100-SplitInjectRatio)/100+NullInjectTime；
wherein M is the total required oil injection pulse width, split Injectratio is the oil injection quantity duty ratio of one nozzle, and NullInjectTime is the invalid oil injection time determined by the nozzle characteristics;
then calculating the oil injection phase parameters of one-way nozzles and two-way nozzles:
Inject_StartPos_1＝InjectEndPos_1-(vvtoffst_1+ctsoffst_1)-M1/t*u；
Inject_StartPos_2＝InjectEndPos_2-(vvtoffst_2+ctsoffst_2)-M2/t*u；
if |Inject_StartPos_2-InjectEndPos_1| < SplitMinDelta;
at this point project_startpos_2=project endpos_1+split mindelta;
the injection-start angles of the two-way nozzles are respectively the injection-start angles of the two-way nozzles, and the injection-end angles of the two-way nozzles are respectively the injection-end angles of the two-way nozzles, namely the rack standard quantity; split mindelta is the split injection minimum interval; vvtoffst_1, ctsofst_1, and vvtoffst_2, ctsofst_2 are the offset of the injection end positions of one-path two-path nozzles, t is the cycle time of one tooth of the crankshaft gear wheel rotation, and u is the angle corresponding to each tooth of the crankshaft
Injection parameters for other cylinders are then synchronously calculated based on the fixed angle difference.
Further, in the first step, when the required oil injection pulse width is judged to be 0, the step three is directly entered, and the oil injection parameters are fed back to the ECU.
The invention has the following beneficial effects:
according to the electric control method for the double-nozzle fuel oil sub-injection of the PFI engine, provided by the invention, the double-nozzle fuel oil sub-injection is divided into the double-nozzle sub-synchronous injection mode and the double-nozzle single asynchronous injection mode according to the common injection condition, and under the condition that only the single-nozzle mode is used for sub-injection of an EOIT table and a sub-injection proportion table, calculation of fuel injection parameters can be realized, the calculated amount of the PFI double-nozzle sub-injection control is effectively reduced, the logic complexity is reduced, the logic structure is simplified, the calculated amount is reduced, and the load of a CPU is reduced.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the invention, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
Fig. 1 is a control flow chart of an electric control method for double-nozzle fuel oil split injection of a PFI engine according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, the invention provides an electric control method for double-nozzle fuel oil split injection of a PFI engine, which comprises the following steps:
step one: the EMS system (engine management system) reads the logically calculated required oil injection pulse width and judges whether the required oil injection pulse width is 0; when the required oil injection pulse width is 0, the value of the oil injection pulse width of each nozzle is 0;
step two: when the required oil injection pulse width is not 0, the system judges the oil injection mode: the method comprises the steps of identifying and judging a double-nozzle sub-synchronous injection mode and a double-nozzle single asynchronous injection mode by judging whether three Boolean-type variables of double-nozzle synchronous injection and multiple injection are supported;
in the double-nozzle multiple synchronous injection mode, only the injection pulse width and the injection phase parameters of one-way nozzle and two-way nozzle of the reference cylinder are calculated, one-way nozzle injection parameters are assigned to two-way nozzles, and then the injection parameters of other cylinders are synchronously calculated based on fixed angle difference.
The specific design is as follows: in the double-nozzle multiple synchronous injection mode, the EMS only calculates the oil injection parameters of one nozzle of the reference cylinder, and calculates actual oil injection pulse widths Split1 and Split2 of one nozzle and two nozzles at first:
Split1＝M*1/2*SplitInjectRatio/100+NullInjectTime；
Split2＝M*1/2*(100-SplitInjectRatio)/100+NullInjectTime；
wherein M is the total required fuel pulse width, split InjectRatio is the injection ratio of one injection, and NullInjectTime is the invalid injection time determined by the nozzle characteristics;
and then calculating the oil injection phase parameter of one path of nozzle:
Inject_StartPos_1＝InjectEndPos_1-(vvtoffst_1+ctsoffst_1)-Split1/t*u；
Inject_StartPos_2＝Inject_EndPos_2-(vvtoffst_2+ctsoffst_2)-Split2/t*u；
if |Inject_StartPos_2-InjectEndPos_1| < SplitMinDelta;
at this point project_startpos_2=project endpos_1+split mindelta;
the injection_StartPos_1 and the injection_StartPos_2 are respectively the initial angles of one spraying and two spraying, the injection EndPos_1 and the injection EndPos_2 are respectively the end angles of one spraying and two spraying, and the initial angles are the standard quantity of the rack; split mindelta is the split injection minimum interval; vvtoffst_1, ctsofst_1, and vvtoffst_2, ctsofst_2 are offset values of the end positions of one-injection and two-injection oil injection respectively, t is cycle time of one tooth of the crankshaft gear wheel rotation, and u is an angle corresponding to each tooth of the crankshaft;
and then, assigning one nozzle injection parameter to the two nozzles, and synchronously calculating injection parameters of other cylinders based on the fixed angle difference.
In the double-nozzle single-time asynchronous injection mode, the injection pulse width and the injection phase of two paths of nozzles of the reference cylinder are calculated according to the fractional injection condition of the single-nozzle mode respectively, namely, the injection pulse width and the injection phase of one path of nozzles are the injection pulse width and the injection phase of single-nozzle single-injection, the injection pulse width and the injection phase of two paths of nozzles are the injection pulse width and the injection phase of single-nozzle double-injection, and then the injection parameters of other cylinders are synchronously calculated based on fixed angle difference. The specific design is as follows:
in the double-nozzle single asynchronous injection mode, the oil injection pulse width and the oil injection phase of two paths of nozzles of a reference cylinder are calculated according to the fractional injection condition of the single-nozzle mode, and the actual oil injection pulse width of one path of nozzles and two paths of nozzles is calculated firstly:
M1＝M*SplitInjectRatio/100+NullInjectTime；
M2＝M*(100-SplitInjectRatio)/100+NullInjectTime；
wherein M is the total required oil injection pulse width, split Injectratio is the oil injection quantity duty ratio of one nozzle, and NullInjectTime is the invalid oil injection time determined by the nozzle characteristics;
then calculating the oil injection phase parameters of one-way nozzles and two-way nozzles:
Inject_StartPos_1＝InjectEndPos_1-(vvtoffst_1+ctsoffst_1)-M1/t*u；
Inject_StartPos_2＝InjectEndPos_2-(vvtoffst_2+ctsoffst_2)-M2/t*u；
if |Inject_StartPos_2-InjectEndPos_1| < SplitMinDelta;
at this point project_startpos_2=project endpos_1+split mindelta;
the injection-start angles of the two-way nozzles are respectively the injection-start angles of the two-way nozzles, and the injection-end angles of the two-way nozzles are respectively the injection-end angles of the two-way nozzles, namely the rack standard quantity; split mindelta is the split injection minimum interval; vvtoffst_1, ctsofst_1, and vvtoffst_2, ctsofst_2 are the offset of the injection end positions of the two-way nozzle, t is the cycle time of one tooth of the crankshaft gear wheel rotation, and u is the angle corresponding to each tooth of the crankshaft.
And then synchronously calculating injection parameters of other cylinders based on the fixed angle difference.
Step three: and feeding back the oil injection parameters to the ECU, thus completing the electric control strategy of oil injection parameter calculation. In the first step, when the required oil injection pulse width is judged to be 0, the step three is directly carried out, and the oil injection parameters are fed back to the ECU, so that the electric control strategy of oil injection parameter calculation is completed.
In any injection mode, the oil injection time is calculated based on a reference cylinder (such as four cylinders), the oil injection time of each other cylinder has a fixed angle difference (taking a four-cylinder machine as an example, one cylinder is separated by 360 degrees, three cylinders are separated by 540 degrees, two cylinders are separated by 180 degrees), and the end position is separated from the compression top dead center of one cylinder by 720 degrees at the latest;
in the implementation of the invention, through the design, under the condition that the related calibration of the fractional injection EOIT and the fractional injection proportion calibration of the fractional injection EOIT are only used in a single-nozzle mode, the calculation of each parameter of the double-nozzle fractional synchronous injection (the EOIT and the injection proportion of each injection are independently markable) and the double-nozzle single asynchronous injection (the EOIT and the injection proportion of each nozzle are independently markable in practice like the fractional injection) is realized, the calculated amount of the PFI double-nozzle fractional injection control is effectively reduced, the logic complexity is reduced, the logic structure is simplified, the calculated amount is reduced, and the load of a CPU is reduced.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (2)
1. An electric control method for double-nozzle fuel oil split injection of a PFI engine is characterized by comprising the following steps:
step one: the EMS system reads the logic calculated required oil injection pulse width and judges whether the required oil injection pulse width is 0; when the required oil injection pulse width is 0, the value of the oil injection pulse width of each nozzle is 0;
step two: when the required oil injection pulse width is not 0, the EMS system judges the oil injection mode: the method comprises the steps of identifying and judging a double-nozzle sub-synchronous injection mode and a double-nozzle single asynchronous injection mode by judging whether three Boolean-type variables of double-nozzle synchronous injection and multiple injection are supported;
in the double-nozzle multiple synchronous injection mode, only the injection pulse width and the injection phase parameters of one-way nozzles and two-way nozzles of a reference cylinder are needed to be calculated, one-way nozzle injection parameters are assigned to two-way nozzles, and then the injection parameters of other cylinders are synchronously calculated based on fixed angle difference;
in the double-nozzle single-time asynchronous injection mode, the injection pulse width and the injection phase of two paths of nozzles of a reference cylinder are calculated according to the fractional injection condition of the single-nozzle mode respectively, namely, the injection pulse width and the injection phase of one path of nozzles are the injection pulse width and the injection phase of single-nozzle single-time injection, the injection pulse width and the injection phase of two paths of nozzles are the injection pulse width and the injection phase of single-nozzle double-time injection, and then injection parameters of other cylinders are synchronously calculated based on fixed angle difference;
in the dual-nozzle multiple synchronous injection mode, the EMS only calculates the injection parameters of one nozzle of the reference cylinder, and calculates actual injection pulse widths Split1 and Split2 of one nozzle and two nozzles at first:
Split1＝M*1/2*SplitInjectRatio/100+NullInjectTime；
Split2＝M*1/2*(100-SplitInjectRatio)/100+NullInjectTime；
wherein M is the total required fuel pulse width, split InjectRatio is the injection ratio of one injection, and NullInjectTime is the invalid injection time determined by the nozzle characteristics;
and then calculating the oil injection phase parameter of one path of nozzle:
Inject_StartPos_1＝InjectEndPos_1-(vvtoffst_1+ctsoffst_1)-Split1/t*u；
Inject_StartPos_2＝Inject_EndPos_2-(vvtoffst_2+ctsoffst_2)-Split2/t*u；
if |Inject_StartPos_2-InjectEndPos_1| < SplitMinDelta;
at this point project_startpos_2=project endpos_1+split mindelta;
the injection_StartPos_1 and the injection_StartPos_2 are respectively the initial angles of one spraying and two spraying, the injection EndPos_1 and the injection EndPos_2 are respectively the end angles of one spraying and two spraying, and the initial angles are the standard quantity of the rack; split mindelta is the split injection minimum interval; vvtoffst_1, ctsofst_1, and vvtoffst_2, ctsofst_2 are offset values of the end positions of one-injection and two-injection oil injection respectively, t is cycle time of one tooth of the crankshaft gear wheel rotation, and u is an angle corresponding to each tooth of the crankshaft;
then, one path of nozzle injection parameters are assigned to two paths of nozzles, and then injection parameters of other cylinders are synchronously calculated based on fixed angle difference;
when the double-nozzle single asynchronous injection is performed, the oil injection pulse width and the oil injection phase of the two paths of nozzles of the reference cylinder are respectively calculated according to the fractional injection condition of the single-nozzle mode, and the actual oil injection pulse width of one path of nozzles and the actual oil injection pulse width of the two paths of nozzles are calculated firstly:
M1＝M*SplitInjectRatio/100+NullInjectTime；
M2＝M*(100-SplitInjectRatio)/100+NullInjectTime；
wherein M is the total required oil injection pulse width, split Injectratio is the oil injection quantity duty ratio of one nozzle, and NullInjectTime is the invalid oil injection time determined by the nozzle characteristics;
then calculating the oil injection phase parameters of one-way nozzles and two-way nozzles:
Inject_StartPos_1＝InjectEndPos_1-(vvtoffst_1+ctsoffst_1)-M1/t*u；
Inject_StartPos_2＝InjectEndPos_2-(vvtoffst_2+ctsoffst_2)-M2/t*u；
if |Inject_StartPos_2-InjectEndPos_1| < SplitMinDelta;
at this point project_startpos_2=project endpos_1+split mindelta;
the injection-start angles of the two-way nozzles are respectively the injection-start angles of the two-way nozzles, and the injection-end angles of the two-way nozzles are respectively the injection-end angles of the two-way nozzles, namely the rack standard quantity; split mindelta is the split injection minimum interval; vvtoffst_1, ctsofst_1, and vvtoffst_2, ctsofst_2 are offset values of the oil injection end positions of two paths of nozzles, t is cycle time of one tooth of the crankshaft gear wheel rotation, and u is an angle corresponding to each tooth of the crankshaft; then synchronously calculating injection parameters of other cylinders based on the fixed angle difference;
step three: and feeding back the fuel injection parameters to the ECU.
2. The electrically controlled method for dual nozzle fuel injection of a PFI engine of claim 1, wherein: in the first step, when the required oil injection pulse width is judged to be 0, the step three is directly carried out, and the oil injection parameters are fed back to the ECU.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4590733B2 (en) * | 2000-02-22 | 2010-12-01 | マツダ株式会社 | Exhaust gas purification catalyst and exhaust gas purification method using the catalyst |
| JP2021021337A (en) * | 2019-07-24 | 2021-02-18 | マツダ株式会社 | Fuel injection control device for engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1567041A (en) * | 1975-11-06 | 1980-05-08 | Allied Chem | Fuel injection system |
| CN200978727Y (en) * | 2005-11-29 | 2007-11-21 | 王和平 | Double fuel jet internal combustion engine |
| CN102080598A (en) * | 2010-12-20 | 2011-06-01 | 北京工业大学 | A control method for an internal combustion engine using dimethyl ether and high-octane fuel |
| CN114542266A (en) * | 2022-04-25 | 2022-05-27 | 四川中能西控低碳动力装备有限公司 | Pre-combustion chamber structure of double nozzles of engine and control method |
Non-Patent Citations (1)
| Title |
|---|
| 缸内直喷汽油机燃烧控制策略及实现;雷小呼, 王燕军, 王建昕, 程勇;内燃机工程;20040615(第03期);全文 * |
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