CN115324802A - Torque control method and device for pre-combustion chamber double-ignition gasoline engine - Google Patents
Torque control method and device for pre-combustion chamber double-ignition gasoline engine Download PDFInfo
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- CN115324802A CN115324802A CN202211041335.9A CN202211041335A CN115324802A CN 115324802 A CN115324802 A CN 115324802A CN 202211041335 A CN202211041335 A CN 202211041335A CN 115324802 A CN115324802 A CN 115324802A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02P—IGNITION, OTHER THAN COMPRESSION IGNITION, FOR INTERNAL-COMBUSTION ENGINES; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES
- F02P5/00—Advancing or retarding ignition; Control therefor
- F02P5/04—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions
- F02P5/145—Advancing or retarding ignition; Control therefor automatically, as a function of the working conditions of the engine or vehicle or of the atmospheric conditions using electrical means
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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
- F02D37/00—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for
- F02D37/02—Non-electrical conjoint control of two or more functions of engines, not otherwise provided for one of the functions being ignition
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Abstract
The invention provides a torque control method and a device of a precombustion chamber double-ignition gasoline engine, comprising the following steps: obtaining the optimal torque of an engine and the current required output torque of the engine; calculating the torque ratio of the two; judging whether the ignition of the precombustion chamber or the ignition of the main combustion chamber is used as main power output; if the ignition of the precombustion chamber is judged to be the main power output, calculating the precombustion chamber required ignition angle of the precombustion chamber according to the torque ratio, the optimal ignition angle of the precombustion chamber and the precombustion chamber ignition efficiency curve, and calculating the main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the precombustion chamber ignition efficiency curve; if the ignition of the main combustion chamber is judged to be main power output, calculating a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the ignition efficiency curve of the main combustion chamber, and calculating a pre-combustion chamber required ignition angle of the pre-combustion chamber according to the torque ratio, the optimal ignition angle of the pre-combustion chamber and the ignition efficiency curve of the main combustion chamber; the output of the ignition angle is performed.
Description
Technical Field
The invention relates to the technical field of vehicle system control, in particular to a torque control method and device of a pre-combustion chamber double-ignition gasoline engine.
Background
The technical scheme of the Chinese energy-saving and new energy automobile is released in 2020 and 10 months, the energy-saving automobile including hybrid automobiles and fuel automobiles still accounts for 50% in 2035, and fuel consumption indexes of the hybrid automobiles and the fuel automobiles are clear. Therefore, the application of new technology to improve the thermal efficiency of the engine and reduce the fuel consumption becomes one of the most urgent development directions of the traditional power system. The engine precombustion chamber technology in the new technology can shorten the combustion lag period, improve the combustion speed, reduce the detonation tendency, improve the compression ratio and reduce the fuel consumption, and the advantages of the technology can make the precombustion chamber technology become one of the development hotspots of the current engine. The precombustion chamber is divided into an active type and a passive type according to the formation mode of mixed gas in the precombustion chamber, wherein the mixed gas in the active type precombustion chamber is formed by oil supply of an oil sprayer in the precombustion chamber, and the mixed gas in the passive type precombustion chamber enters the precombustion chamber from the mixed gas in the main combustion chamber through airflow movement. In addition, the spark ignition of the precombustion chamber has certain limitations, such as poor combustion stability, easy fire catching, difficult starting and the like when the engine is under the working condition of low speed and small load.
To solve this problem, some techniques form a dual spark ignition by adding an ignition device to the main combustion chamber, as shown in fig. 1. Compared with a traditional non-precombustion chamber spark ignition engine control system, the induction of the precombustion chamber increases the combustion speed of the mixed gas in the cylinder, the combustion phase of the mixed gas is advanced, and the work capacity of the engine is increased, as shown in figure 2.
However, because of the main chamber spark plug ignition, which is typically located relatively far from the middle of the combustion chamber, the spark ignition combustion rate is relatively slow. When the double spark plugs of the precombustion chamber and the main combustion chamber are configured, according to the conditions of the rotating speed, the load, the water temperature of cooling liquid and the like of an engine, three ignition modes of only precombustion chamber ignition, only main combustion chamber ignition and precombustion chamber and main combustion chamber co-ignition exist, and the combustion speed, the combustion phase and the work-doing capability of mixed gas in the three ignition modes are different. When the pre-combustion chamber and the main combustion chamber are ignited together, the pre-combustion chamber and the main combustion chamber are also distinguished to be used as main work output. Within the whole operating condition range of the engine, the output torque of the engine needs to be accurately controlled so as to meet the requirements of drivability and dynamic property.
Disclosure of Invention
In order to solve the problems, the invention provides a torque control method of a pre-combustion chamber double-ignition gasoline engine, which can meet the requirements of drivability and dynamic property, and adopts the following technical scheme:
the invention provides a torque control method of a precombustion chamber double-ignition gasoline engine, which is characterized by comprising the following steps:
obtaining the optimal torque of an engine, and obtaining the output torque required by the current engine;
calculating a torque ratio of the current engine demand output torque and the optimal torque;
judging whether the ignition of the precombustion chamber or the ignition of the main combustion chamber is used as main power output according to the ignition mode of the engine;
if the ignition of the precombustion chamber is judged to be the main power output, calculating the precombustion chamber required ignition angle of the precombustion chamber according to the torque ratio, the optimal ignition angle of the precombustion chamber and the precombustion chamber ignition efficiency curve, and calculating the main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the precombustion chamber ignition efficiency curve;
if the ignition of the main combustion chamber is judged to be the main power output, calculating a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the ignition efficiency curve of the main combustion chamber, and calculating a pre-combustion chamber required ignition angle of the pre-combustion chamber according to the torque ratio, the optimal ignition angle of the pre-combustion chamber and the ignition efficiency curve of the main combustion chamber;
and outputting the ignition angle according to the ignition angle required by the pre-combustion chamber and the ignition angle required by the main combustion chamber.
The invention provides a torque control method of a pre-combustion chamber double-ignition gasoline engine, which is characterized by further comprising the following steps:
and respectively calculating the optimal ignition angle of the precombustion chamber and the optimal ignition angle of the main combustion chamber according to the rotating speed, the load, the excess air coefficient of the mixed gas, the oil injection mode, the EGR rate, the air intake and exhaust angle and the ignition mode of the engine.
The invention provides a torque control method of a pre-chamber double-ignition gasoline engine, which is characterized by further comprising the following steps:
the optimal torque and the optimal basic torque of the engine are calculated according to the rotating speed, the load, the fuel injection mode, the excess air coefficient of the mixed gas and the ignition mode of the engine.
The invention provides a torque control method of a pre-combustion chamber double-ignition gasoline engine, which is characterized by further comprising the following steps:
and respectively setting a pre-combustion chamber ignition efficiency curve and a main combustion chamber ignition efficiency curve according to the optimal pre-combustion chamber ignition angle, the optimal main combustion chamber ignition angle, the optimal torque, the optimal basic torque and the ignition mode.
The invention provides a torque control method of a precombustion chamber double-ignition gasoline engine, which is characterized in that:
the ignition mode is set in advance according to the engine speed, load, and coolant temperature.
The invention provides a torque control method of a pre-combustion chamber double-ignition gasoline engine, which is characterized by further comprising the following steps:
and when the torque required by the driver exists, calculating the corresponding engine required output torque according to the drivability filtered torque.
The invention provides a torque control method of a pre-combustion chamber double-ignition gasoline engine, which is characterized by further comprising the following steps:
and calculating the corresponding required output torque of the engine after filtering according to the drivability, and simultaneously controlling the opening of a throttle valve of the engine, the opening of a supercharger and the VVT angle.
The present invention also provides a torque control device for a precombustion chamber dual-ignition gasoline engine, comprising:
the torque acquisition module is used for acquiring the optimal torque of the engine and acquiring the output torque required by the current engine;
the torque ratio calculation module is used for calculating the torque ratio of the current engine demand output torque and the optimal torque;
the power output judging module is used for judging whether the ignition of the precombustion chamber or the ignition of the main combustion chamber is used as main power output according to the ignition mode of the engine;
a required ignition angle calculation module, which calculates a pre-combustion chamber required ignition angle of the pre-combustion chamber according to the torque ratio, the pre-combustion chamber optimal ignition angle and the pre-combustion chamber ignition efficiency curve if the power output judgment module judges that the pre-combustion chamber ignition is the main power output, calculates a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the main combustion chamber optimal ignition angle and the pre-combustion chamber ignition efficiency curve, calculates a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the main combustion chamber optimal ignition angle and the main combustion chamber ignition efficiency curve if the power output judgment module judges that the main combustion chamber ignition is the main power output, and calculates the pre-combustion chamber required ignition angle of the pre-combustion chamber according to the torque ratio, the pre-combustion chamber optimal ignition angle and the main combustion chamber ignition efficiency curve;
and the ignition angle output module is used for outputting the ignition angle according to the ignition angle required by the pre-combustion chamber and the ignition angle required by the main combustion chamber.
The invention also provides electronic equipment which comprises a memory, a processor and a computer program stored on the memory and capable of running on the processor, and is characterized in that when the processor executes the program, the torque control method of the precombustion chamber double-ignition gasoline engine is realized.
The present invention also provides a non-transitory computer readable storage medium having a computer program stored thereon, wherein the computer program, when executed by a processor, implements the torque control method of the pre-chamber dual ignition gasoline engine as described above.
According to the torque control method and device of the pre-combustion chamber double-ignition gasoline engine, the corresponding ratio is calculated according to the required torque and the optimal torque by acquiring the input required torque of the engine and calculating the obtained optimal torque; meanwhile, according to the judgment of the work doing capability of the ignition mode, a corresponding ignition efficiency curve is selected to calculate the required output ignition angle, so that the accurate control of the output torque of the engine is realized, and the requirements of driving dynamics and smoothness are met.
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In order to more clearly illustrate the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of dual ignition control for a pre-chamber gasoline engine;
FIG. 2 is a comparison of pre-chamber ignition versus main chamber ignition combustion differences;
FIG. 3 is a first flowchart illustrating a method for controlling torque in a precombustion chamber dual-ignition gasoline engine according to an embodiment of the present invention;
FIG. 4 is a second flowchart illustrating a torque control method for a pre-combustion dual ignition gasoline engine according to an embodiment of the present invention;
FIG. 5 is a block diagram illustrating a torque control arrangement for a pre-chamber dual ignition gasoline engine as provided in accordance with an embodiment of the present invention;
fig. 6 is a schematic physical structure diagram of an electronic device according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
FIG. 3 is a first flowchart illustrating a method for controlling torque in a precombustion chamber dual-ignition gasoline engine according to an embodiment of the present invention; FIG. 4 is a second flow chart illustrating a method for controlling torque in a precombustion dual-ignition gasoline engine according to an embodiment of the present invention; as shown in fig. 3 and 4, the torque control method of the pre-combustion chamber double-ignition gasoline engine specifically comprises the following steps:
and S101, acquiring the optimal torque of the engine and acquiring the output torque required by the current engine.
In this step, the optimal torque of the engine is calculated in advance based on the state data of the engine, and the current engine required output torque is calculated based on the required torque input by the driver.
Specifically, as shown in fig. 4, before step S101, the method further includes:
respectively calculating the optimal ignition angle of the precombustion chamber and the optimal ignition angle of the main combustion chamber according to the rotating speed, the load, the excess air coefficient of the mixed gas, the oil injection mode, the EGR rate, the air intake and exhaust angles and the ignition mode of the engine; and calculating the optimal torque and the optimal basic torque of the engine according to the rotating speed, the load, the fuel injection mode, the air-fuel mixture excess coefficient and the ignition mode of the engine.
In the embodiment, data such as the engine speed, the load, the injection mode, the air-fuel mixture excess air coefficient, the EGR rate, the air intake and exhaust angle and the like are obtained through detection of the engine in advance. The ignition mode is set in advance according to the engine speed, the load and the coolant temperature.
And then respectively setting a pre-combustion chamber ignition efficiency curve and a main combustion chamber ignition efficiency curve according to the optimal pre-combustion chamber ignition angle, the optimal main combustion chamber ignition angle, the optimal torque, the optimal basic torque and the ignition mode.
The above is the calculation process of the optimal firing angle, the optimal torque, and the firing efficiency curve. Next, the method further comprises:
and when the torque required by the driver exists, calculating the corresponding current engine required output torque according to the drivability filtered torque. Synchronously, the engine throttle opening, the supercharger opening, and the VVT angle are controlled.
S102, calculating a torque ratio of the current engine demand output torque and the optimal torque.
In practical applications, this step S102 may be performed in synchronization with a process of calculating a corresponding current engine required output torque after filtering according to drivability and a process of controlling an engine throttle opening, a supercharger opening, and a VVT angle.
And S103, judging whether the ignition of the precombustion chamber or the ignition of the main combustion chamber is used as main power output according to the ignition mode of the engine.
And S104, if the ignition of the precombustion chamber is judged to be main power output, calculating the precombustion chamber required ignition angle of the precombustion chamber according to the torque ratio, the optimal ignition angle of the precombustion chamber and the precombustion chamber ignition efficiency curve, and calculating the main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the precombustion chamber ignition efficiency curve.
And S105, if the ignition of the main combustion chamber is judged to be the main power output, calculating a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the ignition efficiency curve of the main combustion chamber, and calculating a pre-combustion chamber required ignition angle of the pre-combustion chamber according to the torque ratio, the optimal ignition angle of the pre-combustion chamber and the ignition efficiency curve of the main combustion chamber.
In steps S104 and S105, the main combustion chamber required ignition angle and the precombustion chamber required ignition angle are calculated based on the ignition efficiency curve corresponding to the precombustion chamber ignition determined as the main power output or the main combustion chamber ignition, respectively.
And S106, outputting the ignition angle according to the ignition angle required by the precombustion chamber and the ignition angle required by the main combustion chamber.
The principle of the method is that the optimal ignition angle, the optimal engine torque and the ignition mode working capacity of the precombustion chamber and the main combustion chamber are respectively obtained according to the data scanning point of the rack; and based thereon, ignition efficiency curves of the precombustion chamber and the main combustion chamber are respectively calculated. When the engine demand torque is input, calculating a corresponding ratio according to the demand torque and the optimal torque; meanwhile, according to the judgment of the work doing capability of the ignition mode, a corresponding ignition efficiency curve is selected to calculate the required output ignition angle, so that the requirement of the output torque of the engine is met, and the driving dynamic property and the smoothness are realized.
Fig. 5 is a block diagram showing a torque control apparatus for a pre-chamber dual ignition gasoline engine according to an embodiment of the present invention, and as shown in fig. 5, a torque control apparatus 200 for a pre-chamber dual ignition gasoline engine includes:
the torque acquisition module 201 acquires an optimal torque of the engine and acquires a current engine demand output torque.
The torque ratio calculation module 202 calculates a torque ratio of the current engine demand output torque and the optimal torque.
And the power output judging module 203 judges whether the ignition of the precombustion chamber or the ignition of the main combustion chamber is taken as the main power output according to the ignition mode of the engine.
And the required ignition angle calculation module 204 is used for calculating the required ignition angle of the main combustion chamber and the required ignition angle of the pre-combustion chamber respectively according to the judgment result of the power output judgment module 203.
And if the power output judging module judges that the ignition of the precombustion chamber is the main power output, calculating the required ignition angle of the precombustion chamber according to the torque ratio, the optimal ignition angle of the precombustion chamber and the ignition efficiency curve of the precombustion chamber, and calculating the required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the ignition efficiency curve of the precombustion chamber.
If the power output judging module judges that the ignition of the main combustion chamber is the main power output, calculating a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the ignition efficiency curve of the main combustion chamber, and calculating a pre-combustion chamber required ignition angle of the pre-combustion chamber according to the torque ratio, the optimal ignition angle of the pre-combustion chamber and the ignition efficiency curve of the main combustion chamber;
and the ignition angle output module 205 outputs the ignition angle according to the ignition angle required by the precombustion chamber and the ignition angle required by the main combustion chamber.
The torque control 10 of the pre-combustion chamber dual-ignition gasoline engine provided in the present embodiment has the same implementation principle and technical effects as those of the foregoing method embodiments, and for the sake of brief description, no mention is made in the device embodiments, and reference may be made to the corresponding contents in the foregoing method embodiments.
Fig. 6 is a schematic entity structure diagram of an electronic device according to an embodiment of the present invention, and as shown in fig. 6, the electronic device may include: a processor (processor) 610, a communication Interface (Communications Interface) 620, a memory (memory) 630 and a communication bus 640, wherein the processor 610, the communication Interface 620 and the memory 630 communicate with each other via the communication bus 640. Processor 610 may invoke logic instructions in memory 630 to perform a method of torque control for a pre-chamber dual ignition gasoline engine, comprising: obtaining the optimal torque of an engine, and obtaining the output torque required by the current engine; calculating a torque ratio of the current engine demand output torque and the optimal torque; judging whether the ignition of the precombustion chamber or the ignition of the main combustion chamber is used as main power output according to the ignition mode of the engine; if the ignition of the precombustion chamber is judged to be the main power output, calculating the precombustion chamber required ignition angle of the precombustion chamber according to the torque ratio, the optimal ignition angle of the precombustion chamber and the precombustion chamber ignition efficiency curve, and calculating the main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the precombustion chamber ignition efficiency curve; if the ignition of the main combustion chamber is judged to be the main power output, calculating a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the ignition efficiency curve of the main combustion chamber, and calculating a pre-combustion chamber required ignition angle of the pre-combustion chamber according to the torque ratio, the optimal ignition angle of the pre-combustion chamber and the ignition efficiency curve of the main combustion chamber; and outputting the ignition angle according to the ignition angle required by the pre-combustion chamber and the ignition angle required by the main combustion chamber.
In addition, the logic instructions in the memory 630 may be implemented in software functional units and stored in a computer readable storage medium when the logic instructions are sold or used as independent products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
In yet another aspect, the present invention also provides a non-transitory computer readable storage medium having stored thereon a computer program which, when executed by a processor, implements a method of torque control for a pre-chamber dual ignition gasoline engine provided to perform the above method, the method of torque control for a pre-chamber dual ignition gasoline engine comprising: obtaining the optimal torque of an engine, and obtaining the output torque required by the current engine; calculating a torque ratio of the current engine demand output torque and the optimal torque; judging whether the ignition of the precombustion chamber or the ignition of the main combustion chamber is used as main power output according to the ignition mode of the engine; if the ignition of the precombustion chamber is judged to be the main power output, calculating the precombustion chamber required ignition angle of the precombustion chamber according to the torque ratio, the optimal ignition angle of the precombustion chamber and the precombustion chamber ignition efficiency curve, and calculating the main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the precombustion chamber ignition efficiency curve; if the ignition of the main combustion chamber is judged to be main power output, calculating a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the ignition efficiency curve of the main combustion chamber, and calculating a pre-combustion chamber required ignition angle of the pre-combustion chamber according to the torque ratio, the optimal ignition angle of the pre-combustion chamber and the ignition efficiency curve of the main combustion chamber; and outputting the ignition angle according to the ignition angle required by the pre-combustion chamber and the ignition angle required by the main combustion chamber.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and the parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of this embodiment. One of ordinary skill in the art can understand and implement it without inventive effort.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. Based on the understanding, the above technical solutions substantially or otherwise contributing to the prior art may be embodied in the form of a software product, which may be stored in a computer-readable storage medium, such as ROM/RAM, magnetic disk, optical disk, etc., and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the method of various embodiments or some parts of embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (10)
1. A method of torque control for a pre-chamber dual ignition gasoline engine, comprising:
obtaining the optimal torque of the engine and obtaining the output torque required by the current engine;
calculating a torque ratio of the current engine demand output torque and an optimal torque;
judging whether the ignition of a pre-combustion chamber or the ignition of a main combustion chamber is used as main power output according to the ignition mode of the engine;
if the ignition of the precombustion chamber is judged to be main power output, calculating a precombustion chamber required ignition angle of the precombustion chamber according to the torque ratio, the optimal ignition angle of the precombustion chamber and the precombustion chamber ignition efficiency curve, and calculating a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the precombustion chamber ignition efficiency curve;
if the ignition of the main combustion chamber is judged to be the main power output, calculating a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and a main combustion chamber ignition efficiency curve, and calculating a pre-combustion chamber required ignition angle of the pre-combustion chamber according to the torque ratio, the optimal ignition angle of the pre-combustion chamber and the main combustion chamber ignition efficiency curve;
and outputting an ignition angle according to the ignition angle required by the precombustion chamber and the ignition angle required by the main combustion chamber.
2. The method of torque control for a pre-chamber dual ignition gasoline engine as recited in claim 1, further comprising:
and respectively calculating the optimal ignition angle of the pre-combustion chamber and the optimal ignition angle of the main combustion chamber according to the rotation speed, the load, the excess air coefficient of the mixed gas, the oil injection mode, the EGR rate, the air intake and exhaust angle and the ignition mode of the engine.
3. The method of torque control for a pre-chamber dual ignition gasoline engine as recited in claim 2, further comprising:
the optimal torque and the optimal basic torque of the engine are calculated according to the rotating speed, the load, the fuel injection mode, the excess air coefficient of the mixed gas and the ignition mode of the engine.
4. The method of torque control for a pre-chamber dual ignition gasoline engine as recited in claim 3, further comprising:
and respectively setting a precombustion chamber ignition efficiency curve and a main combustion chamber ignition efficiency curve according to the optimal ignition angle of the precombustion chamber, the optimal ignition angle of the main combustion chamber, the optimal torque, the optimal basic torque and the ignition mode.
5. The torque control method of a pre-chamber dual ignition gasoline engine as claimed in any one of claims 1 to 4, wherein:
the ignition mode is set in advance according to the engine speed, the load and the coolant temperature.
6. The method of controlling torque in a pre-chamber dual ignition gasoline engine as recited in claim 1, further comprising:
and when the torque required by the driver exists, calculating the corresponding engine required output torque after filtering according to the drivability.
7. The method of torque control for a pre-chamber dual ignition gasoline engine as recited in claim 6, further comprising:
and after filtering according to the drivability, calculating the corresponding required output torque of the engine, and simultaneously controlling the opening of a throttle valve of the engine, the opening of a supercharger and the VVT angle.
8. A torque control device for a pre-chamber dual ignition gasoline engine comprising:
the torque acquisition module is used for acquiring the optimal torque of the engine and acquiring the output torque required by the current engine;
the torque ratio calculation module is used for calculating the torque ratio of the current engine demand output torque and the optimal torque;
the power output judging module is used for judging whether the ignition of the precombustion chamber or the ignition of the main combustion chamber is used as main power output according to the ignition mode of the engine;
a required ignition angle calculation module, if the power output judgment module judges that the ignition of the precombustion chamber is main power output, calculating a precombustion chamber required ignition angle of the precombustion chamber according to the torque ratio, the optimal ignition angle of the precombustion chamber and a precombustion chamber ignition efficiency curve, and calculating a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the precombustion chamber ignition efficiency curve if the power output judgment module judges that the ignition of the main combustion chamber is main power output, calculating a main combustion chamber required ignition angle of the main combustion chamber according to the torque ratio, the optimal ignition angle of the main combustion chamber and the main combustion chamber ignition efficiency curve, and calculating a precombustion chamber required ignition angle of the precombustion chamber according to the torque ratio, the optimal ignition angle of the precombustion chamber and the main combustion chamber ignition efficiency curve;
and the ignition angle output module is used for outputting the ignition angle according to the ignition angle required by the precombustion chamber and the ignition angle required by the main combustion chamber.
9. An electronic device comprising a memory, a processor and a computer program stored on the memory and executable on the processor, wherein the processor when executing the program implements the method of torque control for a pre-chamber dual ignition gasoline engine as recited in any one of claims 1 to 7.
10. A non-transitory computer readable storage medium having stored thereon a computer program, characterized in that the computer program, when executed by a processor, implements the method of torque control of a pre-chamber dual ignition gasoline engine as claimed in any one of claims 1 to 7.
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| CN217129650U (en) * | 2022-01-28 | 2022-08-05 | 长城汽车股份有限公司 | Engine control device and automobile with same |
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| JP2010242739A (en) * | 2009-04-04 | 2010-10-28 | Man Diesel Se | Ignition system for gas engine, gas engine having the ignition system and method for driving the gas engine |
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