CN110541766B - Range extender engine control method and device, vehicle and terminal - Google Patents
Range extender engine control method and device, vehicle and terminal Download PDFInfo
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- CN110541766B CN110541766B CN201910795525.1A CN201910795525A CN110541766B CN 110541766 B CN110541766 B CN 110541766B CN 201910795525 A CN201910795525 A CN 201910795525A CN 110541766 B CN110541766 B CN 110541766B
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- 239000004606 Fillers/Extenders Substances 0.000 title claims abstract description 132
- 238000000034 method Methods 0.000 title claims abstract description 20
- 239000007788 liquid Substances 0.000 claims description 6
- 230000003044 adaptive effect Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 3
- 230000006870 function Effects 0.000 description 2
- 238000003306 harvesting Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B77/00—Component parts, details or accessories, not otherwise provided for
- F02B77/08—Safety, indicating, or supervising devices
- F02B77/089—Safety, indicating, or supervising devices relating to engine temperature
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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
- F02D29/00—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto
- F02D29/02—Controlling engines, such controlling being peculiar to the devices driven thereby, the devices being other than parts or accessories essential to engine operation, e.g. controlling of engines by signals external thereto peculiar to engines driving vehicles; peculiar to engines driving variable pitch propellers
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/021—Engine temperature
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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
- F02D2200/00—Input parameters for engine control
- F02D2200/02—Input parameters for engine control the parameters being related to the engine
- F02D2200/10—Parameters related to the engine output, e.g. engine torque or engine speed
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- 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
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/62—Hybrid vehicles
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Combined Controls Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a range extender engine control method, which comprises the following steps: acquiring target output power of the range extender; acquiring the current temperature of the range extender engine; judging whether the current temperature is not less than a temperature threshold value; and if so, controlling the range extender engine to work at an output power which is lower than the target output power by one level. The invention also discloses a range extender engine control device, a vehicle with the range extender engine control device and a terminal with the range extender engine control device. The invention has the working characteristics of being adaptive to the range extender and realizes step-by-step point power limitation; the over-temperature protection can be actively carried out on the range extender engine, and the working power is actively reduced when the working temperature of the engine is overhigh.
Description
Technical Field
The invention relates to an engine control method, in particular to a range extender engine control method, and further relates to a range extender engine control device, a vehicle and a terminal.
Background
The range extender can provide extra electric energy to enable the vehicle to obtain a longer running distance, the working mode of the range extender is that a fixed power point works, the engine controller controls the rotating speed of an engine system, the generator controller controls the torque of a generator, the engine controller and the generator are correspondingly calibrated and solidified in advance, and the engine controller and the generator are matched to realize the work of the corresponding power point.
Most of the existing thermal protection function modules of the range extender use or borrow protection logic in an original engine controller, and the thermal protection function modules are not well suitable for thermal protection of a range extender system, particularly thermal protection of an engine of the range extender. The engine heat protection of the traditional fuel vehicle is controlled by an engine controller, when the air inlet temperature or the water temperature is too high, the torque is actively reduced, the engine is protected, and only linear gradual power limitation can be realized; the range extender works at a fixed power point, and the linear gradual limit power cannot adapt to the power point, so that the thermal protection effect is poor.
Disclosure of Invention
The invention aims to provide a control method of an engine adapting to a range extender so as to improve the thermal protection capability of the engine.
In order to solve the technical problem, the invention discloses a range extender engine control method, which comprises the following steps:
acquiring target output power of the range extender;
acquiring the current temperature of the range extender engine;
judging whether the current temperature is not less than a temperature threshold value;
if yes, controlling the range extender engine to work at an output power which is lower than the target output power by one level;
wherein, the range extender has multi-stage constant power output power.
Further, the method further comprises:
and if the current temperature is smaller than the temperature threshold value, controlling the range extender engine to work at the target output power.
Further, the obtaining the target output power of the range extender includes:
acquiring expected power of the whole vehicle controller;
and determining a target output power corresponding to the range extender according to the expected power.
Further, in the determining the target output power corresponding to the range extender according to the expected power, the following steps are carried out:
the target output power is the output power whose absolute value of the difference from the expected power is smallest;
or the like, or a combination thereof,
the target output power is the output power whose difference from the expected power is positive and minimum.
Further, the current temperature includes a temperature at an outlet of the range extender engine and a temperature at a throttle of the range extender engine.
Further, the determining whether the current temperature is not less than a temperature threshold includes:
judging whether the temperature of the liquid outlet is not less than a first temperature threshold value;
and judging whether the temperature at the throttle valve is not less than a second temperature threshold value.
Correspondingly, the invention also provides a range extender engine control device, which comprises:
the power acquisition module is used for acquiring the target output power of the range extender;
the temperature acquisition module is used for acquiring the current temperature of the range extender engine;
the judging module is used for judging whether the current temperature is not less than a first threshold value or not;
and the processing module is used for controlling the range extender engine to work at an output power which is lower than the target output power by one level if the current temperature is not less than a first threshold value.
Correspondingly, the invention also provides a vehicle which comprises the range extender engine control device.
Further, the vehicle also comprises a range extender controller and a vehicle control unit,
the range extender engine control device is arranged in the range extender controller or the vehicle control unit.
Accordingly, the present invention also provides a computer storage medium having at least one instruction, at least one program, set of codes, or set of instructions stored therein, which is loaded by a processor and executed to perform the method of range extender engine control as set forth above.
Correspondingly, the invention also provides a terminal, a processor and a memory; wherein the content of the first and second substances,
the processor is used for calling and executing the program stored in the memory;
the memory is for storing a program for: acquiring target output power of the range extender; acquiring the current temperature of the range extender engine; judging whether the current temperature is not less than a temperature threshold value; and if so, controlling the range extender engine to work at an output power which is lower than the target output power by one level.
By adopting the technical scheme, the method has the following beneficial effects: the control method can adapt to the working characteristics of the range extender, and realizes step-by-step point-by-point power limiting; the over-temperature protection can be actively carried out on the range extender engine, and the working power is actively reduced when the working temperature of the engine is overhigh; the thermal protection requirement can be actively fed back to the vehicle control unit in advance, the working condition requirement can be judged in advance, and the use requirement on the range extender is changed. The working reliability of the range extender is improved, and the service life of the engine of the range extender can be prolonged.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.
FIG. 1 is a flow chart of a range extender engine control method of the present invention;
FIG. 2 is a flowchart of step S100 according to the present invention;
FIG. 3 is a schematic diagram of the engine control device of the range extender of the present invention;
FIG. 4 is a schematic diagram of the power harvesting module according to the present invention;
fig. 5 is a schematic composition diagram of the range extender of the present invention.
The following is a supplementary description of the drawings: 1-range extender engine control means; 101-a power acquisition module; 1011-desired power acquisition submodule; 1012-a power determination module; 102-a temperature acquisition module; 103-a judgment module; 104-a processing module; 2-a range extender engine system; 201-range extender engine; 202-range extender engine controller; 3-a generator system; 301-a generator; 302-a generator controller; 4-range extender controller.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. 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.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or to implicitly indicate the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
Example (b):
in order to solve the technical problem, the invention discloses a control method of an engine of a range extender, wherein the range extender has multi-stage constant-power output power; it can be understood that the range extender having the output power of the multi-stage constant power means that the output power of the range extender is a fixed value power and can output a plurality of stages of power with different magnitudes. For example, the range extender may have a power of W 1 、W 2 、W 3 、W 4 、W 5 And W 6 (ii) a Wherein, W 1 ＜W 2 ＜W 3 ＜W 4 ＜W 5 ＜W 6 . Then, the method includes steps S100 to S400:
s100: and acquiring the target output power of the range extender.
In some embodiments, the step S100 includes S110 to S120:
s110: acquiring the expected power of the whole vehicle controller;
s120: and determining a target output power corresponding to the range extender according to the expected power.
In some embodiments, in step S120, the target output power is the output power with the smallest absolute value of the difference from the expected power.
It is understood that if the expected power is Wa, the target power is | Wa-W 1 |、|Wa－W 2 |、|Wa－W 3 |、|Wa－W 4 |、|Wa－W 5 I and I Wa-W 6 Power of the range extender corresponding to the minimum value in the l; suppose | Wa-W 3 If | is the minimum value, the target output power is W 3 。
In other embodiments, in step S120, the target output power is the output power which is the smallest and positive difference from the expected power.
It will be appreciated that if the desired power is describedIs Wa, if W 1 －Wa＜0、W 2 －Wa＜0、W 3 －Wa＞0、W 4 -Wa > 0 and W 5 -Wa > 0, then W 3 The difference between the power values of the two power sources is the minimum positive value, the target output power is W 3 。
S200: the current temperature of the range extender engine is obtained.
In some embodiments, the current temperature includes a temperature at an outlet of the range extender engine and a temperature at a throttle of the range extender engine.
S300: and judging whether the current temperature is not less than a temperature threshold value.
In some embodiments, the step S300 includes:
judging whether the temperature of the liquid outlet is not less than a first temperature threshold value;
and judging whether the temperature at the throttle valve is not less than a second temperature threshold value.
It will be appreciated that the current temperature is indicative of a temperature affecting the operation of the range extender engine, and that the range extender engine operating temperature condition is typically reflected by sensing the temperature at the outlet and the temperature at the throttle. For other specific cases, other corresponding temperatures can be selected for detection.
S400: and if so, controlling the range extender engine to work at an output power which is lower than the target output power by one level.
In some embodiments, in the step S400, if the current temperature is not less than the temperature threshold, the step is: if the temperature of the liquid outlet is not less than a first temperature threshold value; or the temperature at the throttle is not less than a second temperature threshold. That is, when any one of the outlet temperature and the throttle temperature is greater than the corresponding threshold value, step S400 is executed.
It is understood that the range extender has a multi-stage constant power output power, and the operation at an output power one stage lower than the target output power means that if the target output power of the range extender is W 3 The output power of the lower stage is W 2 . Then, control the increaseThe program is used for outputting W 2 Is operated for the target.
Further, the range extender comprises a range extender engine system 2, a generator system 3 and a range extender controller 4; the range extender engine system 2 comprises a range extender engine 201 and a range extender engine controller 202, and the generator system 3 comprises a generator 301 and a generator controller 302; the range extender engine 201 and the generator 301 are connected through a flywheel and a spline; the range extender controller 4 is connected to the range extender engine controller 202 and the generator controller 301, respectively. Controlling the range extender to output W 2 Is operated by controlling the rotational speed of the range extender engine 201 by the range extender engine controller 202 and the torque of the generator 301 by the generator controller 302 to be operated at W 2 The corresponding rotating speed and torque are used for outputting the power.
Further, after the step S400 is completed, the current temperature of the range extender engine is detected again, and if the current temperature is still not less than the temperature threshold, the level of the output power is continuously reduced until the idle speed is reduced.
In some embodiments, the method further comprises the step of:
and if the current temperature is less than the temperature threshold value, controlling the range extender engine to work at the target output power.
It is understood that if the current temperature is less than the temperature threshold, the following is meant: if the temperature of the liquid outlet is lower than a first temperature threshold value; and the temperature at the throttle is less than a second temperature threshold.
Accordingly, the present invention also provides a range extender engine control device 1, comprising:
a power obtaining module 101, configured to obtain a target output power of the range extender;
the temperature acquisition module 102 is used for acquiring the current temperature of the range extender engine;
a judging module 103, configured to judge whether the current temperature is not less than a first threshold;
and the processing module 104 is used for controlling the range extender engine to work at an output power which is lower than the target output power by one level if the current temperature is not less than a first threshold value.
In some embodiments, the processing module 104 is further configured to control the range extender engine to operate at the target output power if the current temperature is less than a temperature threshold.
In some embodiments, the power harvesting module 101 comprises:
an expected power acquisition sub-module 1011 for acquiring an expected power of the vehicle control unit;
a power determining module 1012, configured to determine a target output power corresponding to the range extender according to the expected power.
Correspondingly, the invention further provides a vehicle which comprises the range extender engine control device.
Further, the vehicle also comprises a range extender controller 4 and a vehicle control unit,
the range extender engine control device is arranged in the range extender controller 4 or the vehicle control unit.
Accordingly, the present invention also provides a computer storage medium having at least one instruction, at least one program, code set, or set of instructions stored therein, the at least one instruction, at least one program, code set, or set of instructions being loaded by a processor and executing the range extender engine control method as any one of the above.
Correspondingly, the invention also provides a terminal, a processor and a memory; wherein the content of the first and second substances,
the processor is used for calling and executing the program stored in the memory;
the memory is for storing a program for: acquiring target output power of the range extender; acquiring the current temperature of the range extender engine; judging whether the current temperature is not less than a temperature threshold value; and if so, controlling the range extender engine to work at an output power which is lower than the target output power by one level.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (8)
1. A range extender engine control method, comprising:
acquiring expected power of the whole vehicle controller;
determining a target output power corresponding to the range extender according to the expected power; the target output power is the output power with the smallest absolute value of the difference value with the expected power; or, the target output power is the output power which is the positive number and the minimum in the difference value with the expected power;
acquiring the current temperature of the range extender engine;
judging whether the current temperature is not less than a temperature threshold value;
if yes, controlling the range extender engine to work at an output power which is lower than the target output power by one level;
wherein the range extender has multi-stage constant power output power;
the controlling the range extender engine to operate at an output power one stage lower than the target output power includes:
determining the rotating speed and the torque corresponding to the output power which is lower than the target output power by one level;
controlling the rotating speed and the torque of the range extender engine to work at the rotating speed and the torque corresponding to the output power which is lower than the target output power by one level, so as to output the output power which is lower than the target output power by one level;
and re-detecting the current temperature of the range extender engine, and if the current temperature is still not less than the temperature threshold value, continuously reducing the level of the output power until the output power is reduced to an idle speed.
2. The range extender engine control method of claim 1, further comprising:
and if the current temperature is less than the temperature threshold value, controlling the range extender engine to work at the target output power.
3. The range extender engine control method of claim 1, wherein the current temperature comprises a temperature at an outlet of the range extender engine and a temperature at a throttle of the range extender engine.
4. The range extender engine control method of claim 3, wherein said determining whether the current temperature is not less than a temperature threshold comprises:
judging whether the temperature of the liquid outlet is not less than a first temperature threshold value;
judging whether the temperature at the throttle valve is not less than a second temperature threshold value;
and if the temperature of the outlet liquid is not less than a first temperature threshold value or the temperature of the throttle valve is not less than a second temperature threshold value, controlling the range extender engine to work at an output power which is one level lower than the target output power.
5. A range extender engine control apparatus, characterized in that the apparatus comprises:
a power acquisition module (101) for acquiring an expected power of the vehicle controller; determining target output power corresponding to the range extender according to the expected power; the target output power is the output power with the smallest absolute value of the difference value with the expected power; or, the target output power is the output power which is positive and minimum in the difference value with the expected power;
a temperature acquisition module (102) for acquiring a current temperature of the range extender engine;
a judging module (103) for judging whether the current temperature is not less than a temperature threshold value;
a processing module (104) for controlling the range extender engine to operate at an output power one level lower than the target output power if the current temperature is not less than a temperature threshold; the controlling the range extender engine to operate at an output power one stage lower than the target output power includes:
determining the rotating speed and the torque corresponding to the output power which is lower than the target output power by one level;
controlling the rotating speed and the torque of the range extender engine to work at the rotating speed and the torque corresponding to the output power which is lower than the target output power by one level, so as to output the output power which is lower than the target output power by one level;
and the processing module (104) is further used for re-detecting the current temperature of the range extender engine, and if the current temperature is still not less than the temperature threshold value, continuously reducing the level of the output power until the output power is reduced to the idle speed.
6. A vehicle characterized by comprising the range extender engine control device (1) of claim 5.
7. The vehicle according to claim 6, further comprising a range extender controller (4) and a vehicle control unit,
the range extender engine control device (1) is arranged in the range extender controller (4) or in the vehicle control unit.
8. A terminal, characterized by a processor and a memory; wherein, the first and the second end of the pipe are connected with each other,
the processor is used for calling and executing the program stored in the memory;
the memory is for storing a program for: acquiring the expected power of the whole vehicle controller;
determining a target output power corresponding to the range extender according to the expected power; the target output power is the output power with the smallest absolute value of the difference value with the expected power; or, the target output power is the output power which is positive and minimum in the difference value with the expected power;
acquiring the current temperature of the range extender engine; judging whether the current temperature is not less than a temperature threshold value; if yes, controlling the range extender engine to work at an output power which is lower than the target output power by one level; the controlling the range extender engine to operate at an output power one stage lower than the target output power includes:
determining the rotating speed and the torque corresponding to the output power which is lower than the target output power by one level;
controlling the rotating speed and the torque of the range extender engine to work at the rotating speed and the torque corresponding to the output power which is lower than the target output power by one level, so as to output the output power which is lower than the target output power by one level;
and re-detecting the current temperature of the range extender engine, and if the current temperature is not less than the temperature threshold value, continuously reducing the grade of the output power until the output power is reduced to an idle speed.
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| CN201910795525.1A CN110541766B (en) | 2019-08-27 | 2019-08-27 | Range extender engine control method and device, vehicle and terminal |
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| CN112092651B (en) * | 2020-09-11 | 2022-05-27 | 北京罗克维尔斯科技有限公司 | Range extender control method and device, medium, vehicle control unit and vehicle |
| CN115247598A (en) * | 2022-04-06 | 2022-10-28 | 长城汽车股份有限公司 | Method, device, equipment and medium for controlling water temperature of engine |
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| US5264764A (en) * | 1992-12-21 | 1993-11-23 | Ford Motor Company | Method for controlling the operation of a range extender for a hybrid electric vehicle |
| JP2012171520A (en) * | 2011-02-23 | 2012-09-10 | Denso Corp | Control device of electric vehicle |
| CN103419675B (en) * | 2013-09-05 | 2015-12-09 | 安徽江淮汽车股份有限公司 | A kind of operating method of stroke-increasing electric automobile |
| DE102013221640A1 (en) * | 2013-10-24 | 2015-04-30 | Robert Bosch Gmbh | Cooling system for an electric vehicle and method of manufacturing a cooling system |
| CN105971745B (en) * | 2016-06-15 | 2019-06-04 | 北京新能源汽车股份有限公司 | Stroke-increasing electric automobile and its motor warm-up control method and device |
| CN109050347B (en) * | 2018-08-02 | 2020-06-23 | 浙江大学 | Control method of multifunctional permanent magnet synchronous range extender |
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