CN111120096B - Method and system for automatically identifying use of engine - Google Patents
Method and system for automatically identifying use of engine Download PDFInfo
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- CN111120096B CN111120096B CN201911384285.2A CN201911384285A CN111120096B CN 111120096 B CN111120096 B CN 111120096B CN 201911384285 A CN201911384285 A CN 201911384285A CN 111120096 B CN111120096 B CN 111120096B
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- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000001228 spectrum Methods 0.000 claims abstract description 26
- 239000010724 circulating oil Substances 0.000 claims description 88
- 238000001514 detection method Methods 0.000 claims description 25
- 238000004458 analytical method Methods 0.000 claims description 8
- 239000000446 fuel Substances 0.000 claims description 6
- 238000004364 calculation method Methods 0.000 claims description 4
- 230000001960 triggered effect Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 6
- 238000007726 management method Methods 0.000 description 4
- 239000004459 forage Substances 0.000 description 3
- 230000008929 regeneration Effects 0.000 description 3
- 238000011069 regeneration method Methods 0.000 description 3
- 230000002708 enhancing effect Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 231100000817 safety factor Toxicity 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000009331 sowing Methods 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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Classifications
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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
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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
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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
- F02D2200/06—Fuel or fuel supply system parameters
- F02D2200/0614—Actual fuel mass or fuel injection amount
-
- 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
- F02D2200/1002—Output torque
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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
- F02D2200/101—Engine speed
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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
- F02D2200/60—Input parameters for engine control said parameters being related to the driver demands or status
- F02D2200/602—Pedal position
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02D—CONTROLLING COMBUSTION ENGINES
- F02D2700/00—Mechanical control of speed or power of a single cylinder piston engine
- F02D2700/07—Automatic control systems according to one of the preceding groups in combination with control of the mechanism receiving the engine power
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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 method and a system for automatically identifying the use of an engine, which relate to the field of engines, and the method comprises the following steps: presetting road spectrums according to different purposes of the engine; starting the engine to run, and triggering the timing running total time; acquiring real-time values of all variables of the engine, and judging whether the real-time values of all the variables are within a corresponding variable threshold range; if the corresponding timing time is started; calculating the operation ratio of each variable, wherein the operation ratio of each variable is equal to the quotient of the judgment accumulated operation time of the variable and the total operation time; judging whether the operation ratio of each variable is greater than or equal to a corresponding preset ratio threshold value; if the variable mark is at the position 1; all variables with flag bits of 1 are integrated and the associated engine usage is invoked. Therefore, the invention automatically identifies the application of the engine according to the actual operation condition of the engine so as to select the most suitable calibration scheme for the application of the engine and realize the refined calibration of products.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a method and a system for automatically identifying the use of an engine.
Background
The diesel engine products for roads and non-roads have various purposes and complex working conditions, are matched with products with different purposes, have different use conditions, and have great difference between the rotating speed and the load condition when the engine is actually operated. In practical application, different operations are often performed by matching the same engine with different vehicle types. For example, the tractor product can be matched with different farm tools to carry out different operations, can be used for ploughing, loosening soil, sowing, ditching, pulling goods and the like, and has larger difference of the operating conditions of the engine; when heavy objects such as sand and light objects such as forage are loaded like loader products, the running speed and load difference of the engine is also large, as shown in fig. 9 and 10. In addition, the same product engine is simultaneously matched with a loader, a road roller, a harvester and other different purposes, and the subdivision development of all purposes and use conditions is difficult to realize.
When the engine is used for different working purposes, the ECU calibration scheme is different. When the loader is loaded with lighter items such as forage, the load rate is low and separate thermal management measures need to be activated; for agricultural machinery products, considering safety factors, a DPF (Diesel Particulate Filter, chinese means Diesel Particulate Filter) running regeneration mode cannot be adopted, and other regeneration modes need to be started. Therefore, a method is urgently needed to be designed by the technical personnel in the field, and various problems such as dynamic property, economy, heat management, DPF carbon deposition and the like can be more pertinently solved by carrying out fine calibration according to the road spectrum characteristics of different purposes of the engine. The road spectrum is the parameters of the actual rotating speed, torque, accelerator opening, circulating oil supply and the like of the engine, which are obtained by running the engine on an actually matched product according to the operation mode of the engine.
Disclosure of Invention
Aiming at the defects, the technical problems to be solved by the invention are as follows: the method and the system for automatically identifying the application of the engine are provided, the application of the engine is automatically identified according to the actual operating condition of the engine, so that a calibration scheme most suitable for the application of the engine is selected, and the refined calibration of a product is realized.
In order to solve the technical problems, the technical scheme of the invention is as follows:
a method of automatically identifying engine usage, comprising the steps of:
step S0, presetting variable threshold value ranges according to road spectrums with different purposes of the engine, presetting the occupation ratio threshold values of the variable threshold value ranges in the whole road spectrums, and presetting associated variables according to the purposes of the engine, wherein the variables comprise rotating speed, circulating oil supply quantity, torque and/or accelerator opening;
step S1, starting the engine to run, and triggering the total running time;
step S2, acquiring the real-time rotating speed, circulating oil supply quantity, torque and accelerator opening degree of the engine;
step S3, judging whether the real-time rotating speed, the real-time circulating oil supply quantity, the real-time torque and the real-time accelerator opening degree are in the corresponding variable threshold range;
step S4, if the real-time values of the variables are within the corresponding preset variable threshold range, triggering to time the corresponding variable working conditions to judge the accumulated time;
step S5, calculating the operation occupation ratio of each variable, wherein the operation occupation ratio of each variable is equal to the quotient of the judgment accumulated time of the working condition of the variable and the total operation time;
step S6, judging whether the operation ratio of each variable is more than or equal to the corresponding preset ratio threshold value;
step S7, if the variable mark is larger than or equal to the position 1;
and step S8, integrating all variables with the flag bit of 1, calling related engine purposes, judging whether the total running time T is greater than or equal to a preset time, and if so, clearing the total running time and the working conditions of all the variables to judge the accumulated time.
Preferably, the step S3 specifically includes the following steps:
judging whether the rotating speed is within a preset rotating speed range or not;
judging whether the circulating oil supply amount is within a preset circulating oil supply amount range or not;
judging whether the torque is within a preset torque range;
and judging whether the accelerator opening is within a preset accelerator opening range.
Preferably, the step S4 specifically includes the following steps:
if the rotating speed is in the preset rotating speed range, triggering the working condition of the timing rotating speed to judge the accumulated time T1;
if the circulating oil supply amount is within the preset circulating oil supply amount range, triggering the working condition of the timing circulating oil supply amount to judge the accumulated time T2;
if the torque is within the preset torque range, triggering a timing torque working condition to judge the accumulated time T3;
and if the accelerator opening is within the preset accelerator opening range, triggering the working condition judgment accumulated time T4 of the timed accelerator opening.
Preferably, the step S5 specifically includes the following steps:
judging the accumulated time T1 according to the total operation time T and the rotating speed working condition to obtain a rotating speed ratio K1,
judging the accumulated time T2 according to the total operation time T and the working condition of the circulating oil supply quantity to obtain a circulating oil supply quantity ratio K2,
judging the accumulated time T3 according to the total operation time T and the torque working condition to obtain a torque ratio K3,
judging the accumulated time T4 according to the total operation time T and the working condition of the accelerator opening to obtain the ratio K4 of the accelerator opening,
preferably, the step S6 specifically includes the following steps:
judging whether the rotation speed ratio K1 is greater than or equal to a preset ratio threshold value or not, and setting 1 if the rotation speed ratio K1 is greater than a flag bit 0;
judging whether the ratio K2 of the circulating oil supply amount is greater than or equal to a preset ratio threshold, and if so, setting 1 to be greater than a flag bit 1;
judging whether the torque ratio K3 is greater than or equal to a preset ratio threshold, and if so, setting 1 to the flag bit 2;
and/or judging whether the accelerator opening ratio K4 is greater than or equal to a preset ratio threshold, and if so, setting 1 to the flag bit 3.
An automatic engine use identification system comprises an electronic control unit and a controller, wherein the controller is electrically connected with the electronic control unit: the system comprises a presetting unit, a control unit and a control unit, wherein the presetting unit is used for presetting variable threshold ranges according to road spectrums with different purposes of an engine, presetting ratio thresholds of the variable threshold ranges in the whole road spectrums, and presetting associated variables according to the purposes of the engine, wherein the variables comprise rotating speed, circulating oil supply quantity, torque and/or accelerator opening; a total timer for accumulating a total engine operating time; the variable detection unit is used for acquiring the real-time rotating speed, the circulating oil supply quantity, the torque and the accelerator opening degree of the engine and judging whether the real-time rotating speed, the real-time circulating oil supply quantity, the real-time torque and the real-time accelerator opening degree are in the corresponding variable threshold value range or not; the variable timing unit is used for triggering and timing corresponding variable working condition judgment accumulated time when each variable real-time value is within a corresponding preset variable threshold range; the operation ratio calculation unit is used for calculating the operation ratio of each variable, and the operation ratio of each variable is equal to the quotient of the judgment accumulated time of the variable working condition and the total operation time; the operation ratio analysis unit is used for judging whether the operation ratio of each variable is greater than or equal to a corresponding preset ratio threshold value, and if the operation ratio of each variable is greater than or equal to a corresponding preset ratio threshold value, the variable mark position is 1; and the electronic control unit calls the related engine application according to the electric signal corresponding to the variable sign position 1 transmitted by the operation ratio analysis unit.
Preferably, the variable detection unit comprises a rotating speed detection unit, a circulating oil supply amount detection unit, a torque detection unit and an accelerator opening degree detection unit; the rotating speed detection unit is used for acquiring a real-time rotating speed and judging whether the real-time rotating speed is within a preset rotating speed range; the circulating oil supply amount detection unit is used for acquiring the real-time circulating oil supply amount and judging whether the real-time circulating oil supply amount is within a preset circulating oil supply amount range; the torque detection unit is used for acquiring real-time torque and judging whether the real-time torque is within a preset torque range; the accelerator opening detection unit is used for acquiring the real-time accelerator opening and judging whether the accelerator opening is within a preset accelerator opening range.
Preferably, the variable judgment timing unit comprises a rotating speed timer, a circulating oil supply timer, a torque timer and an accelerator opening timer; when the real-time rotating speed is within a preset rotating speed range, the rotating speed timer starts timing; the circulating oil supply timer starts timing when the real-time circulating oil supply is within a preset circulating oil supply range; the torque timer starts timing when the real-time torque is within a preset torque range; and the accelerator opening timer starts timing when the real-time accelerator opening is within a preset accelerator opening range.
Preferably, the system further comprises a mode updating unit electrically connected with the electronic control unit, wherein the mode updating unit is used for updating the total timer, the rotating speed timer, the circulating oil supply amount timer, the torque timer and the accelerator opening timer within preset time.
After the technical scheme is adopted, the invention has the beneficial effects that:
according to the method and the system for automatically identifying the use of the engine, the threshold ranges of all variables are preset according to the road spectrum of the engine with different uses, the proportion of the threshold ranges of all the variables in the whole road spectrum is preset, and related variables are preset according to the use of the engine, wherein the variables comprise the rotating speed, the circulating oil supply quantity, the torque and/or the accelerator opening. And then, calculating the operation ratio of the real-time rotating speed, the real-time circulating oil supply quantity, the real-time torque and the real-time accelerator opening of the engine in the operation process, judging whether the operation ratio is larger than or equal to a preset ratio threshold value, if so, marking the position 1 of the variable, integrating all variables with the marking position 1 according to the variables required by different purposes of the preset engine, calling the preset engine use, enabling the engine to operate according to the road spectrum characteristics for distinguishing and identifying, finally realizing that the engine of the same type meets the use requirements of products of different purposes and the product fine calibration, enhancing the applicability of the engine to the factors such as matching use, operation conditions, driving habits and the like, and constantly keeping the product performance optimal.
Drawings
FIG. 1 is a flow chart of a method of the present invention for automatically identifying engine usage;
FIG. 2 is a logical relationship diagram of a totalizer in the method of automatically identifying engine usage of the present invention;
FIG. 3 is a logical relationship diagram of a tachometer in the method of automatically identifying engine usage of the present invention;
FIG. 4 is a logic diagram of a circular fuel delivery timer in the method of automatically identifying engine usage of the present invention;
FIG. 5 is a logic diagram of an output torque timer in the method of automatically identifying engine usage of the present invention;
FIG. 6 is a logic diagram of a throttle opening timer in the method of automatically identifying engine use of the present invention;
FIG. 7 is a general logical relationship of the method of the present invention for automatically identifying engine usage;
FIG. 8 is a functional block diagram of a system for automatically identifying engine usage according to the present invention;
FIG. 9 is a prior art engine road map of a loader carrying forage;
FIG. 10 is a prior art engine road map of a loader carrying earth;
FIG. 11 is a road map of a road roller according to one embodiment.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The first embodiment is as follows:
as shown in fig. 1, a method for automatically recognizing a transmitter usage includes the steps of:
step S0, presetting variable threshold value ranges according to road spectrums with different purposes of the engine, presetting the proportion of the variable threshold value ranges in the whole road spectrum, and presetting associated variables according to the purposes of the engine, wherein the variables comprise rotating speed, circulating oil supply quantity, torque and/or accelerator opening;
step S1, starting the engine to run, and triggering the total time T of timing running; in this example, the total running time T is counted by a total timer U1, as shown in fig. 2, a timer enable terminal EN is triggered, the total timer U1 starts counting time, and a Temp terminal outputs the total running time T;
step S2, acquiring the real-time rotating speed, circulating oil supply quantity, torque and accelerator opening degree of the engine;
step S3, judging whether the real-time rotating speed, the real-time circulating oil supply quantity, the real-time torque and the real-time accelerator opening degree are in the corresponding variable threshold range;
step S4, if the real-time values of the variables are within the corresponding preset variable threshold range, starting the corresponding variable timer to time;
step S5, calculating the operation ratio of each variable, wherein the operation ratio of each variable is equal to the quotient of the variable timing time and the total operation time;
step S6, judging whether the operation ratio of each variable is more than or equal to the corresponding preset ratio threshold value;
step S7, if the flag bit is larger than or equal to the variable flag bit, setting the flag bit of the variable as 1;
step S8, integrating all variables with the variable flag bit being 1, calling related engine purposes, judging whether the total running time T is greater than or equal to a preset time, and if so, clearing the total running time and the working conditions of all the variables to judge the accumulated time; as shown in fig. 7, one or more related variables are preset according to the road spectrum characteristics of the engine application, and when flag bits of all the set variables are 1, the engine application is output through a ModeOut terminal.
By adopting the method, the operating condition and the proportion are judged according to the operating condition characteristics of the engine with different purposes and the pre-calibrated judgment rules of all purposes, the purpose of the engine is judged, and the optimal calibration scheme calibrated according to the operating purpose is automatically selected. Finally, the engine with the same model can meet the use requirements of products with different purposes and the fine calibration of the products, the applicability of the engine to factors such as matching purposes, operation conditions, driving habits and the like can be enhanced, and the optimal product performance can be kept all the time.
In this embodiment, step S3 specifically includes the following steps:
judging whether the rotating speed is within a preset rotating speed range or not; as shown in fig. 3, the rotation speed range is (rotation speed minimum value, rotation speed maximum value).
Judging whether the circulating oil supply amount is within a preset circulating oil supply amount range or not; as shown in fig. 4, the circulating fuel supply amount ranges are (minimum circulating fuel supply amount, maximum circulating fuel supply amount).
Judging whether the torque is within a preset torque range; as shown in fig. 5, the torque range is (torque minimum, torque maximum).
Judging whether the accelerator opening is within a preset accelerator opening range or not; as shown in fig. 6, the accelerator opening range is (minimum accelerator opening, maximum accelerator opening).
Step S4, specifically including the steps of:
if the rotating speed is in the preset rotating speed range, triggering the working condition of the timing rotating speed to judge the accumulated time T1; as shown in FIG. 3, when the rotation speed is greater than the rotation speed minimum value and less than the rotation speed maximum value, it indicates that the rotation speed is in the rotation speed range, at this time, the enable end EN of the rotation speed timer U2 is triggered to start timing, and the output end Temp of the rotation speed timer U2 outputs the rotation speed working condition to judge the accumulated time T1.
If the circulating oil supply amount is within the preset circulating oil supply amount range, triggering the working condition of the timing circulating oil supply amount to judge the accumulated time T2; as shown in fig. 4, when the circulating oil supply amount is greater than the minimum circulating oil supply amount and less than the maximum circulating oil supply amount, indicating that the circulating oil supply amount is within the range of the circulating oil supply amount, the enable terminal EN of the circulating oil supply amount timer U3 is triggered to start timing, and the accumulated time T2 is judged by the condition that the output terminal Temp of the circulating oil supply amount timer U3 outputs the circulating oil supply amount.
If the torque is within the preset torque range, triggering a timing torque working condition to judge the accumulated time T3; as shown in FIG. 5, when the torque is greater than the torque minimum value and less than the torque maximum value, indicating that the torque is in the torque range, the enable terminal EN of the torque timer U4 is triggered to start timing, and the accumulated time T3 is judged by the output terminal Temp of the torque timer U4 outputting the torque condition.
And if the accelerator opening is within the preset accelerator opening range, triggering the working condition judgment accumulated time T4 of the timed accelerator opening. As shown in fig. 6, when the accelerator opening is greater than the minimum accelerator opening and less than the maximum accelerator opening, it indicates that the accelerator opening is within the range of the accelerator opening, at this time, the enable end EN of the accelerator opening timer U5 is triggered to start timing, and the output end Temp of the accelerator opening timer U5 outputs the accumulated time T4 for judging the accelerator opening condition.
As shown in fig. 2 to 6, when the total operating time T is greater than or equal to the preset time, the total operating time T is cleared, the rotational speed operating condition judgment accumulated time T1 is cleared, the circulating oil supply amount operating condition judgment accumulated time T2 is cleared, the torque operating condition judgment accumulated time T3 is cleared, the accelerator opening operating condition judgment accumulated time T4 is cleared, each variable is judged again, and the purpose of the output engine is updated in real time. Wherein the preset time may be 20 minutes, but is not limited to 20 minutes. When the time is cleared, triggering a timer reset end RST of the master timer U1, and resetting and re-timing the master timer U1; triggering a timer reset end RST of the general timer U1, resetting and re-timing the general timer U1; triggering a timer reset end RST of the rotating speed timer U2, and resetting and re-timing the rotating speed timer U2; triggering a timer reset end RST of the circular oil supply timer U3, and resetting and re-timing the circular oil supply timer U3; triggering a timer reset end RST of the torque timer U4, resetting and re-timing the torque timer U4; the timer reset terminal RST of the accelerator opening timer U5 is triggered, and the accelerator opening timer U5 is reset and restarted.
As shown in fig. 7, step S5 specifically includes the following steps:
judging the accumulated time T1 according to the total operation time T and the rotating speed working condition to obtain a rotating speed ratio K1,
judging the accumulated time T2 according to the total operation time T and the working condition of the circulating oil supply quantity to obtain a circulating oil supply quantity ratio K2,
judging the accumulated time T3 according to the total operation time T and the torque working condition to obtain a torque ratio K3,
judging the accumulated time T4 according to the total operation time T and the working condition of the accelerator opening to obtain the ratio K4 of the accelerator opening,
as shown in fig. 7, step S6 specifically includes the following steps:
judging whether the rotation speed ratio K1 is greater than or equal to a preset ratio threshold, and if so, setting the flag bit0 to be 1;
judging whether the ratio K2 of the circulating oil supply is greater than or equal to a preset ratio threshold, if so, setting a flag bit1 to be 1;
judging whether the torque ratio K3 is greater than or equal to a preset ratio threshold, and setting a flag bit2 to 1 if the torque ratio K3 is greater than or equal to the preset ratio threshold;
and/or judging whether the accelerator opening ratio K4 is greater than or equal to a preset ratio threshold, and if so, setting the flag bit3 to 1.
The flag bit states of the variables are output from an output terminal bitOut of the operation duty analysis unit U6.
For a more clear understanding, the following are examples:
the operation load of the road roller is relatively low, the heat management is poor, and the influence on urea crystallization, DPF regeneration and the like is caused, so that a pulse spectrum 1 is set to start a throttle measure, and the heat management is only carried out aiming at the purpose of the road roller; when the engine is matched with a loader, the rotating speed and load fluctuation is large during actual operation, the requirement on transient response is high, and if a throttle valve is still adopted for thermal management, the dynamic property of the whole vehicle is influenced to a certain extent, so that the throttle valve is not started by setting and executing the pulse spectrum 2.
FIG. 11 is a road map of a road roller engine with speeds centered primarily at 1800 and 2000 revolutions. Presetting that when the rotating speed of the engine runs in the range of 1800 +/-20 rpm and 2000 +/-20 rpm and the running proportion reaches 80%, the purpose output is the road roller, then automatically selecting the pulse spectrum 1 to start a throttle valve measure, realizing the fine calibration of the product in combination with the actual purpose, enhancing the applicability of the engine to the matched purpose, and constantly ensuring the optimal product performance.
Example two:
as shown in fig. 8, an automatic engine usage recognition system includes an electronic control unit, a preset unit electrically connected to the electronic control unit, a general timer U1, a variable detection unit, an operation ratio calculation unit, and an operation ratio analysis unit U6.
The preset unit presets the threshold range of each variable according to the variable in the road spectrum for different purposes of the engine, presets the proportion of the threshold range of each variable in the whole road spectrum, and presets the associated variable according to the purpose of the engine, wherein the variable comprises the rotating speed, the circulating oil supply quantity, the torque and/or the opening degree of an accelerator.
Wherein the totalizer is used to accumulate the total engine operating time, which is timed using the totalizer U1 shown in FIG. 2;
the variable detection unit is used for acquiring the real-time rotating speed, the circulating oil supply quantity, the torque and the accelerator opening degree of the engine and judging whether the real-time rotating speed, the real-time circulating oil supply quantity, the real-time torque and the real-time accelerator opening degree are in the corresponding variable threshold value range. The variable detecting unit in the embodiment comprises a rotating speed detecting unit A1, a circulating oil supply detecting unit A2, a torque detecting unit A3 and an accelerator opening detecting unit A4; the rotation speed detection unit a1 is configured to obtain a real-time rotation speed, and determine whether the real-time rotation speed is within a preset rotation speed range, as shown in fig. 3, if the rotation speed is within the preset rotation speed range, the output Flag1 of the rotation speed detection unit a1 transmits a trigger electrical signal to the enable end EN of the rotation speed timer U2, and triggers timing. The circulating oil supply amount detection unit A2 is used for acquiring real-time circulating oil supply amount and judging whether the real-time circulating oil supply amount is within a preset circulating oil supply amount range; as shown in fig. 4, if the circulating oil supply amount is within the preset circulating oil supply amount range, the output end Flag2 of the circulating oil supply amount detection unit a2 transmits a trigger electric signal to the enable end EN of the circulating oil supply amount timer U3 to trigger timing. The torque detection unit A3 is used for acquiring a real-time torque and judging whether the real-time torque is within a preset torque range; as shown in fig. 5, if the torque is within the preset torque range, the output Flag3 of the torque detection unit a3 transmits a trigger electrical signal to the enable terminal EN of the torque timer U4 to trigger the timing. The accelerator opening detection unit a4 is configured to obtain a real-time accelerator opening and determine whether the accelerator opening is within a preset accelerator opening range, as shown in fig. 6, if the accelerator opening is within the preset accelerator opening range, the output Flag4 of the accelerator opening detection unit a4 transmits a trigger electrical signal to the enable end EN of the accelerator opening timer U5, and triggers timing.
As shown in fig. 2 to 6, the variable determining and timing unit starts the corresponding variable timer to time when each real-time value of the variable is within the corresponding preset variable threshold range. In this example: the variable judging and timing unit comprises a rotating speed timer U2, a circulating oil supply timer U3, a torque timer U4 and an accelerator opening timer U5; when the real-time rotating speed is within a preset rotating speed range, a rotating speed timer U2 starts timing, B; when the real-time circulating oil supply amount is within the preset circulating oil supply amount range, the circulating oil supply amount timer U3 starts timing; the torque timer U4 starts timing when the real-time torque is within a preset torque range; the accelerator opening timer U5 starts timing when the real-time accelerator opening is within a preset accelerator opening range.
Wherein the operation ratio calculation unit is configured to calculate an operation ratio of each variable, and the operation ratio of each variable is equal to a quotient of the variable timing time and the total operation time, as shown in fig. 7.
The operation ratio analysis unit U6 is configured to determine whether the operation ratio of each variable is greater than or equal to a corresponding preset ratio threshold, and if so, set the flag bit of the variable to 1; the electronic control unit calls the related engine application according to the electric signal corresponding to the variable sign position 1 transmitted by the operation ratio analysis unit, as shown in fig. 7.
As shown in fig. 2 to 6, the present embodiment further includes a mode updating unit electrically connected to the electronic control unit, and the mode updating unit is configured to update the total timer U1, the rotation speed timer U2, the circulating oil supply amount timer U3, the torque timer U4, and the accelerator opening degree timer U5 within a preset time. In this example, the preset time is 20 minutes, and the timer reset terminals RST of the timers are triggered during updating, so that re-timing can be realized. The mode updating unit is used for judging whether the timing of the total timer is greater than or equal to the preset time, and if so, updating each timing time.
The system for automatically identifying the use of the engine respectively sets upper and lower limit ranges for the rotating speed, the circulating oil supply quantity, the torque and the accelerator opening according to the characteristics of the road spectrum of different uses, and limits the proportion of the set ranges in the whole road spectrum. And after the whole vehicle starting key is powered on, the engine timer counts time and records the running time of the engine. In the actual operation process, 4 variables of the rotating speed, the circulating oil supply quantity, the torque and the accelerator opening degree are respectively monitored, and when the range of a preset variable threshold value is reached, each variable timer is triggered to start timing. And dividing the judgment accumulated running time recorded by the four timers of the rotating speed, the circulating oil supply quantity, the torque and the accelerator opening degree by the running total time to respectively obtain the running proportion of each variable in the whole process. When the operation ratio is more than or equal to the preset ratio threshold, the variable flag bit is set to be 1. The system combines the road spectrum characteristics of different purposes of the engine to selectively use four variables, outputs the corresponding purpose of the engine after the flag bits of all the variables are selected to be 1, and then automatically selects the corresponding calibration pulse spectrum aiming at the purpose.
The logic judgment path can be defined in various ways according to the possibility and diversity of the actual use of the engine, and the engine meets the requirements of which setting range and ratio when running, and which use is output. Therefore, the invention automatically identifies the application of the engine according to the actual operation condition of the engine so as to select the most suitable calibration scheme for the application of the engine and realize the refined calibration of products.
The above-described preferred embodiments of the present invention are not intended to limit the present invention, and any modifications, equivalent to the method and system for automatically identifying the engine usage, which are within the spirit and principle of the present invention, should be included in the scope of the present invention.
Claims (9)
1. A method of automatically identifying engine usage, comprising the steps of:
step S0, presetting variable threshold value ranges according to road spectrums with different purposes of the engine, presetting the occupation ratio threshold values of the variable threshold value ranges in the whole road spectrums, and presetting associated variables according to the purposes of the engine, wherein the variables comprise rotating speed, circulating oil supply quantity, torque and/or accelerator opening;
step S1, starting the engine to run, and triggering the total time T of timing running;
step S2, acquiring the real-time rotating speed, circulating oil supply quantity, torque and accelerator opening degree of the engine;
step S3, judging whether the real-time rotating speed, the real-time circulating oil supply quantity, the real-time torque and the real-time accelerator opening degree are in the corresponding variable threshold range;
step S4, if the real-time values of the variables are within the corresponding preset variable threshold range, triggering to time the corresponding variable working conditions to judge the accumulated time;
step S5, calculating the operation occupation ratio of each variable, wherein the operation occupation ratio of each variable is equal to the quotient of the judgment accumulated time of the working condition of the variable and the total operation time;
step S6, judging whether the operation ratio of each variable is more than or equal to the corresponding preset ratio threshold value;
step S7, if the variable mark is larger than or equal to the position 1;
and step S8, integrating all variables with the flag bit of 1, calling related engine purposes, judging whether the total running time T is greater than or equal to a preset time, and if so, clearing the total running time and the working conditions of all the variables to judge the accumulated time.
2. The method for automatically identifying the use of an engine as claimed in claim 1, wherein said step S3 specifically comprises the steps of:
judging whether the rotating speed is within a preset rotating speed range or not;
judging whether the circulating oil supply amount is within a preset circulating oil supply amount range or not;
judging whether the torque is within a preset torque range;
and judging whether the accelerator opening is within a preset accelerator opening range.
3. The method for automatically identifying the use of an engine as claimed in claim 2, wherein said step S4 specifically comprises the steps of:
if the rotating speed is in the preset rotating speed range, triggering the working condition of the timing rotating speed to judge the accumulated time T1;
if the circulating oil supply amount is within the preset circulating oil supply amount range, triggering the working condition of the timing circulating oil supply amount to judge the accumulated time T2;
if the torque is within the preset torque range, triggering a timing torque working condition to judge the accumulated time T3;
and if the accelerator opening is within the preset accelerator opening range, triggering the working condition judgment accumulated time T4 of the timed accelerator opening.
4. The method for automatically identifying the use of an engine as claimed in claim 3, wherein said step S5 specifically comprises the steps of:
judging the accumulated time T1 according to the total operation time T and the rotating speed working condition to obtain a rotating speed ratio K1,
judging the accumulated time T2 according to the total operation time T and the working condition of the circulating oil supply quantity to obtain a circulating oil supply quantity ratio K2,
judging the accumulated time T3 according to the total operation time T and the torque working condition to obtain a torque ratio K3,
judging the accumulated time T4 according to the total operation time T and the working condition of the accelerator opening to obtain the ratio K4 of the accelerator opening,
5. the method for automatically identifying the use of an engine as claimed in claim 4, wherein said step S6 specifically comprises the steps of:
judging whether the rotation speed ratio K1 is greater than or equal to a preset ratio threshold value or not, and setting 1 if the rotation speed ratio K1 is greater than a flag bit 0;
judging whether the ratio K2 of the circulating oil supply amount is greater than or equal to a preset ratio threshold, and if so, setting 1 to be greater than a flag bit 1;
judging whether the torque ratio K3 is greater than or equal to a preset ratio threshold, and if so, setting 1 to the flag bit 2;
and/or judging whether the accelerator opening ratio K4 is greater than or equal to a preset ratio threshold, and if so, setting 1 to the flag bit 3.
6. An automatic engine use identification system is characterized by comprising an electronic control unit and a control unit, wherein the electronic control unit is electrically connected with:
the system comprises a presetting unit, a control unit and a control unit, wherein the presetting unit is used for presetting variable threshold ranges according to road spectrums with different purposes of an engine, presetting ratio thresholds of the variable threshold ranges in the whole road spectrums, and presetting associated variables according to the purposes of the engine, wherein the variables comprise rotating speed, circulating oil supply quantity, torque and/or accelerator opening;
a total timer for accumulating a total engine operating time;
the variable detection unit is used for acquiring the real-time rotating speed, the circulating oil supply quantity, the torque and the accelerator opening degree of the engine and judging whether the real-time rotating speed, the real-time circulating oil supply quantity, the real-time torque and the real-time accelerator opening degree are in the corresponding variable threshold value range or not;
the variable timing unit is used for triggering and timing corresponding variable working condition judgment accumulated time when each variable real-time value is within a corresponding preset variable threshold range;
the operation ratio calculation unit is used for calculating the operation ratio of each variable, and the operation ratio of each variable is equal to the quotient of the judgment accumulated time of the variable working condition and the total operation time;
the operation ratio analysis unit is used for judging whether the operation ratio of each variable is greater than or equal to a corresponding preset ratio threshold value, and if the operation ratio of each variable is greater than or equal to a corresponding preset ratio threshold value, the variable mark position is 1;
and the electronic control unit calls the related engine application according to the electric signal corresponding to the variable sign position 1 transmitted by the operation ratio analysis unit.
7. The system for automatically recognizing use of an engine as set forth in claim 6, wherein the variable detecting unit includes a rotation speed detecting unit, a circulating fuel supply amount detecting unit, a torque detecting unit, and an accelerator opening degree detecting unit;
the rotating speed detection unit is used for acquiring a real-time rotating speed and judging whether the real-time rotating speed is within a preset rotating speed range;
the circulating oil supply amount detection unit is used for acquiring the real-time circulating oil supply amount and judging whether the real-time circulating oil supply amount is within a preset circulating oil supply amount range;
the torque detection unit is used for acquiring real-time torque and judging whether the real-time torque is within a preset torque range;
the accelerator opening detection unit is used for acquiring the real-time accelerator opening and judging whether the accelerator opening is within a preset accelerator opening range.
8. The automatic identification engine use system according to claim 6, wherein the variable timing unit includes a revolution timer, a loop fuel supply timer, a torque timer, and a throttle opening timer;
when the real-time rotating speed is within a preset rotating speed range, the rotating speed timer starts timing;
the circulating oil supply timer starts timing when the real-time circulating oil supply is within a preset circulating oil supply range;
the torque timer starts timing when the real-time torque is within a preset torque range;
and the accelerator opening timer starts timing when the real-time accelerator opening is within a preset accelerator opening range.
9. The automatic identification engine usage system of claim 8, further comprising a mode update unit electrically connected to the electronic control unit, the mode update unit being configured to update the total timer, the rpm timer, the crank throw timer, the torque timer, and the throttle opening timer within a preset time.
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| US6655343B2 (en) * | 2001-05-08 | 2003-12-02 | Yamaha Marine Kabushiki Kaisha | Engine control system for an outboard motor |
| KR20080023038A (en) * | 2006-09-08 | 2008-03-12 | 현대자동차주식회사 | Skip down shift control method of automatic transmission on vehicle |
| JP4948643B1 (en) * | 2010-12-24 | 2012-06-06 | 株式会社小松製作所 | Guidance output device, guidance output method, and construction machine equipped with guidance output device |
| JP5803874B2 (en) * | 2012-10-19 | 2015-11-04 | ダイキン工業株式会社 | Hybrid work machine |
| IN2015DN06419A (en) * | 2013-07-22 | 2015-07-31 | Komatsu Mfg Co Ltd | |
| JP5954358B2 (en) * | 2014-05-21 | 2016-07-20 | トヨタ自動車株式会社 | Drive control device |
| CN105626277B (en) * | 2015-12-23 | 2018-07-17 | 廖金能 | A kind of controller and method of the remote fault diagnosis of oil-electric engine group and Gernral Check-up |
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