CN102879200B - A kind ofly measure method, the Apparatus and system that workspace commonly used by engine - Google Patents
A kind ofly measure method, the Apparatus and system that workspace commonly used by engine Download PDFInfo
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- CN102879200B CN102879200B CN201210351654.XA CN201210351654A CN102879200B CN 102879200 B CN102879200 B CN 102879200B CN 201210351654 A CN201210351654 A CN 201210351654A CN 102879200 B CN102879200 B CN 102879200B
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Abstract
The invention discloses and a kind ofly measure the method that workspace commonly used by engine, for obtaining the conventional workspace of engine quickly and accurately, the method comprises: when engine bench test, gathers the nitrogen oxide emission under different engine and engine torque condition and corrected parameter value; Preserve the corresponding relation of engine speed, engine torque and corrected parameter value and nitrogen oxide emission; When vehicle actual motion, after gathering the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value; The corresponding relation of inquiry engine speed, engine torque and corrected parameter value and nitrogen oxide emission, obtains the actual torque of the engine when vehicle actual motion; According to the actual speed of engine and the actual torque of engine, determine the conventional workspace of engine.The invention also discloses and a kind ofly measure system and the device that workspace commonly used by engine.
Description
Technical field
The present invention relates to technical field of automobile engine, be specifically related to a kind ofly measure method, the Apparatus and system that workspace commonly used by engine.
Background technology
At present, society is more and more stronger for the consciousness of energy-saving and emission-reduction, how more to effectively reduce oil consumption, meets automobile exhaust emission standard regulation simultaneously, propose increasingly serious challenge to car engine machine technology, therefore the conventional workspace of Water demand engine.The conventional workspace of engine refers to the main operating condition of engine when mating car load, namely different rotating speeds and perform region corresponding to moment of torsion.According to the conventional workspace obtained, for the performance optimizing engine provides foundation, can choose the direction that optimal engine configuration is determined to optimize, direct engine performance optimization coupling and car load coupling, reach optimum oil consumption district consistent with the conventional workspace of engine.
The conventional workspace of engine can be measured by engine speed and engine torque, in the prior art, be by pressure calculation engine torque after supercharging during mensuration air inlet, and then obtain the conventional workspace of engine according to engine speed and engine torque.But, calculate conventional workspace by pressure after mensuration supercharging, there is response speed slow, the shortcoming that accuracy of measurement is lower.
Summary of the invention
In view of this, fundamental purpose of the present invention is to provide and a kind ofly measures method, the Apparatus and system that workspace commonly used by engine, calculate that workspace commonly used by engine to solve in prior art by pressure after mensuration supercharging, response speed is slow, the problem that accuracy of measurement is lower.
For solving the problem, technical scheme provided by the invention is as follows:
Measure the method that workspace commonly used by engine, described method comprises:
When engine bench test, after gathering nitrogen oxide emission under different engine and engine torque condition and corrected parameter value, receive described engine speed, described engine torque, described corrected parameter value and described nitrogen oxide emission;
Preserve the corresponding relation of described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission;
When vehicle actual motion, after gathering the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value, receive described actual engine speed, described oxides of nitrogen actual emission and described actual correction parameter value;
Inquire about the corresponding relation of described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission, obtain the actual torque of the engine when vehicle actual motion;
According to the actual speed of described engine and the actual torque of described engine, determine the conventional workspace of engine.
Accordingly, corrected parameter value comprises intake air temperature, admission pressure and ambient humidity;
Actual correction parameter value comprises actual intake air temperature, actual admission pressure and actual ambient humidity.
Accordingly, gather the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value, comprising:
The actual speed of engine is gathered by the speed probe arranged on vehicle bell housing, oxides of nitrogen actual emission is gathered by the oxides of nitrogen determinator arranged on vehicle exhaust pipeline, actual intake air temperature is gathered by temperature sensor, gather actual admission pressure by pressure transducer, gather actual ambient humidity by humidity sensor.
Accordingly, described oxides of nitrogen determinator comprises: NOx sensor or fast nitrogen-oxide analyzer.
Measure the device that workspace commonly used by engine, described device comprises:
First receiving element, when engine bench test, after gathering nitrogen oxide emission under different engine and engine torque condition and corrected parameter value, receive described engine speed, described engine torque, described corrected parameter value and described nitrogen oxide emission;
Data saving unit, for preserving the corresponding relation of described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission;
Second receiving element, when vehicle actual motion, after gathering the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value, receive described actual engine speed, described oxides of nitrogen actual emission and described actual correction parameter value;
Query unit, for inquiring about the corresponding relation of described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission, obtains the actual torque of the engine when vehicle actual motion;
Determining unit, for according to the actual speed of described engine and the actual torque of described engine, determines the conventional workspace of engine.
Accordingly, corrected parameter value comprises intake air temperature, admission pressure and ambient humidity;
Actual correction parameter value comprises actual intake air temperature, actual admission pressure and actual ambient humidity.
Measure the system that workspace commonly used by engine, described system comprises:
Engine bench test data collector, for when engine bench test, gathers the nitrogen oxide emission under different engine and engine torque condition and corrected parameter value;
Road modal data harvester, for when vehicle actual motion, gathers the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value;
Workspace determinator commonly used by engine, for receiving described engine speed, described engine torque, described nitrogen oxide emission and described corrected parameter value; Preserve the corresponding relation of described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission; Receive the actual speed of described engine, described oxides of nitrogen actual emission and described actual correction parameter value; Inquire about the corresponding relation of described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission, obtain the actual torque of the engine when vehicle actual motion; According to the actual speed of described engine and the actual torque of described engine, obtain the conventional workspace of engine.
Accordingly, corrected parameter value comprises intake air temperature, admission pressure and ambient humidity;
Actual correction parameter value comprises actual intake air temperature, actual admission pressure and actual ambient humidity.
Accordingly, described road modal data harvester, comprising:
Speed probe, is arranged on vehicle bell housing, for gathering the actual speed of engine;
Oxides of nitrogen determinator, for being arranged at vehicle exhaust pipeline, for gathering oxides of nitrogen actual emission;
Temperature sensor, for gathering actual intake air temperature;
Pressure transducer, for gathering actual admission pressure;
Humidity sensor, for gathering actual ambient humidity.
Accordingly, described oxides of nitrogen determinator, comprising: NOx sensor or fast nitrogen-oxide analyzer.
As can be seen here, the present invention has following beneficial effect:
The present invention utilizes engine NOx determinator directly to measure oxides of nitrogen actual emission and correlation parameter, according to the corresponding relation of the oxides of nitrogen actual emission preserved when engine bench test and correlation parameter and engine torque, obtain the actual torque of engine, and then determine that workspace commonly used by engine, measure fast response time, engine torque more accurately can be obtained, thus improve the accuracy that workspace mensuration commonly used by engine, for Engine Performance Optimization coupling and car load coupling provide the reference more optimized.
Accompanying drawing explanation
Fig. 1 is the process flow diagram that the present invention measures that working set approach commonly used by engine;
Fig. 2 is the schematic diagram that the present invention measures that work area equipment commonly used by engine;
Fig. 3 is the structural representation that the present invention measures that workspace system commonly used by engine;
Fig. 4 is the schematic diagram of Road of the present invention modal data harvester.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, are described in further detail the embodiment of the present invention below in conjunction with the drawings and specific embodiments.
Provided by the inventionly a kind ofly measure the method that workspace commonly used by engine, calculate that workspace commonly used by engine in prior art by pressure after mensuration supercharging, response speed is slow, the problem that accuracy of measurement is lower, the discharge capacity of the oxides of nitrogen (NOx) by measuring vehicle is proposed, calculate the actual torque of engine, then according to the actual speed of vehicle and the conventional workspace of actual torque mensuration engine.
Based on above-mentioned thought, shown in Figure 1, the present invention measures the method that workspace commonly used by engine, comprises the following steps:
Step 101: when engine bench test, after gathering nitrogen oxide emission under different engine and engine torque condition and corrected parameter value, receives engine speed, engine torque, corrected parameter value and nitrogen oxide emission.
Step 102: the corresponding relation preserving engine speed, engine torque and corrected parameter value and nitrogen oxide emission.
When engine pedestal carries out the test of NOx discharge universal characteristic, measure the nitrogen oxide emission under different engine and engine torque condition, corrected parameter value can comprise intake air temperature, admission pressure and intake air temperature, according to corrected parameter and N0x discharge capacity universal characteristic test figure, path spectruming analysis database can be set up, in path spectruming analysis database, preserve the corresponding relation of engine speed, engine torque and corrected parameter value and nitrogen oxide emission.
Step 103: when vehicle actual motion, after gathering the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value, receives actual engine speed, oxides of nitrogen actual emission and actual correction parameter value.
Wherein, actual correction parameter corresponds to corrected parameter, and actual correction parameter value can comprise actual intake air temperature, actual admission pressure and actual ambient humidity.
When carrying out car load matching test, namely in vehicle actual motion, the actual speed of engine is gathered by the speed probe arranged on vehicle bell housing, oxides of nitrogen actual emission is gathered by the oxides of nitrogen determinator (such as oxides of nitrogen N0x sensor or fast oxides of nitrogen N0x analyser) arranged on vehicle exhaust pipeline, actual intake air temperature is gathered by temperature sensor, gather actual admission pressure by pressure transducer, gather actual ambient humidity by humidity sensor.
Step 104: the corresponding relation of inquiry engine speed, engine torque and corrected parameter value and nitrogen oxide emission, obtains the actual torque of the engine when vehicle actual motion.
Engine is in practical work process, under different engine speed, along with the increase of load, the N0x discharge capacity of engine is also increase, after measuring actual engine speed, oxides of nitrogen actual emission and actual correction parameter value, path spectruming analysis database can be inquired about, obtain the actual torque of the engine when vehicle actual motion.
Step 105: according to the actual speed of engine and the actual torque of engine, determines the conventional workspace of engine.
The conventional workspace of engine refers to different rotating speeds and perform region corresponding to moment of torsion, obtains the actual speed of engine and the actual torque of engine, can determine the conventional workspace of engine.
Like this, engine NOx determinator is utilized directly to measure oxides of nitrogen actual emission and correlation parameter, according to the corresponding relation of the oxides of nitrogen actual emission preserved when engine bench test and correlation parameter and engine torque, obtain the actual torque of engine, and then determine the conventional workspace of engine, measure fast response time, engine torque more accurately can be obtained, thus improve the accuracy that workspace mensuration commonly used by engine, for Engine Performance Optimization coupling and car load coupling provide the reference more optimized.
Accordingly, shown in Figure 2, the present invention also provides a kind of and measures the device that workspace commonly used by engine, and this device comprises:
First receiving element 21, data saving unit 22, second receiving element 23, query unit 24 and determining unit 25.
Wherein, first receiving element 21, for when engine bench test, after gathering nitrogen oxide emission under different engine and engine torque condition and corrected parameter value, receive engine speed, engine torque, corrected parameter value and nitrogen oxide emission;
Data saving unit 22, for preserving the corresponding relation of engine speed, engine torque and corrected parameter value and nitrogen oxide emission;
Second receiving element 23, for when vehicle actual motion, after gathering the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value, receives actual engine speed, oxides of nitrogen actual emission and actual correction parameter value;
Query unit 24, for inquiring about the corresponding relation of engine speed, engine torque and corrected parameter value and nitrogen oxide emission, obtains the actual torque of the engine when vehicle actual motion;
Determining unit 25, for according to the actual speed of engine and the actual torque of engine, determines the conventional workspace of engine.
In the above-described embodiments, corrected parameter value can comprise intake air temperature, admission pressure and ambient humidity; Actual correction parameter value can comprise actual intake air temperature, actual admission pressure and actual ambient humidity.
Second receiving element 23, specifically for when vehicle actual motion, the actual speed of engine is gathered by the speed probe arranged on vehicle bell housing, oxides of nitrogen actual emission is gathered by the oxides of nitrogen determinator arranged on vehicle exhaust pipeline, actual intake air temperature is gathered by temperature sensor, actual admission pressure is gathered by pressure transducer, after gathering actual ambient humidity by humidity sensor, receive actual engine speed, oxides of nitrogen actual emission and actual correction parameter value.
Wherein, oxides of nitrogen determinator can be NOx sensor or quick nitrogen-oxide analyzer.
Accordingly, shown in Figure 3, the present invention also provides a kind of and measures the system that workspace commonly used by engine, and this system comprises:
Workspace determinator 2 commonly used by engine bench test data collector 1, road modal data harvester 3 and engine.
Wherein, engine bench test data collector 1, for when engine bench test, gathers the nitrogen oxide emission under different engine and engine torque condition and corrected parameter value;
Road modal data harvester 3, for when vehicle actual motion, gathers the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value;
Workspace determinator 2 commonly used by engine, for receiving engine speed, engine torque, nitrogen oxide emission and corrected parameter value; Preserve the corresponding relation of engine speed, engine torque and corrected parameter value and nitrogen oxide emission; Receive the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value; The corresponding relation of inquiry engine speed, engine torque and corrected parameter value and nitrogen oxide emission, obtains the actual torque of the engine when vehicle actual motion; According to the actual speed of engine and the actual torque of engine, obtain the conventional workspace of engine.
Wherein, workspace determinator 2 commonly used by engine can be that a kind of in above-described embodiment measures the device that workspace commonly used by engine.
In addition, shown in Figure 4, road modal data harvester 3 can comprise: speed probe 31, oxides of nitrogen determinator 32, temperature sensor 33, pressure transducer 34 and humidity sensor 35.
Wherein, speed probe 31, is arranged on vehicle bell housing, for gathering the actual speed of engine;
Oxides of nitrogen determinator 32, for being arranged at vehicle exhaust pipeline, for gathering oxides of nitrogen actual emission; Oxides of nitrogen determinator 32 can be NOx sensor or quick nitrogen-oxide analyzer.
Temperature sensor 33, for gathering actual intake air temperature;
Pressure transducer 34, for gathering actual admission pressure;
Humidity sensor 35, for gathering actual ambient humidity.
Corrected parameter value can comprise intake air temperature, admission pressure and ambient humidity; Actual correction parameter value can comprise actual intake air temperature, actual admission pressure and actual ambient humidity.
The principle of work of native system is:
Engine bench test data collector 1, when engine bench test, gathers the nitrogen oxide emission under different engine and engine torque condition and corrected parameter value;
Engine is commonly used workspace determinator 2 and is received engine speed, engine torque, nitrogen oxide emission and corrected parameter value, and preserves the corresponding relation of engine speed, engine torque and corrected parameter value and nitrogen oxide emission;
Road modal data harvester 3 is when vehicle actual motion, gather the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value, specifically can by speed probe 31 gather engine actual speed, to be gathered oxides of nitrogen actual emission by oxides of nitrogen determinator 32, gathered actual intake air temperature by temperature sensor 33, gathered actual admission pressure by pressure transducer, gather actual ambient humidity by humidity sensor 35;
Engine is commonly used workspace determinator 2 and is received the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value; The corresponding relation of inquiry engine speed, engine torque and corrected parameter value and nitrogen oxide emission, obtains the actual torque of the engine when vehicle actual motion; According to the actual speed of engine and the actual torque of engine, the final conventional workspace obtaining engine.
Like this, engine NOx determinator is utilized directly to measure oxides of nitrogen actual emission and correlation parameter, according to the corresponding relation of the oxides of nitrogen actual emission preserved when engine bench test and correlation parameter and engine torque, obtain the actual torque of engine, and then determine the conventional workspace of engine, measure fast response time, engine torque more accurately can be obtained, thus improve the accuracy that workspace mensuration commonly used by engine, for Engine Performance Optimization coupling and car load coupling provide the reference more optimized.
It should be noted that, in this instructions, each embodiment adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar portion mutually see.For system disclosed in embodiment or device, because it corresponds to the method disclosed in Example, so description is fairly simple, relevant part illustrates see method part.
Also it should be noted that, in this article, the such as relational terms of first and second grades and so on is only used for an entity or operation to separate with another entity or operational zone, and not necessarily requires or imply the relation that there is any this reality between these entities or operation or sequentially.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thus make to comprise the process of a series of key element, method, article or equipment and not only comprise those key elements, but also comprise other key elements clearly do not listed, or also comprise by the intrinsic key element of this process, method, article or equipment.When not more restrictions, the key element limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment comprising described key element and also there is other identical element.
The software module that the method described in conjunction with embodiment disclosed herein or the step of algorithm can directly use hardware, processor to perform, or the combination of the two is implemented.Software module can be placed in the storage medium of other form any known in random access memory (RAM), internal memory, ROM (read-only memory) (ROM), electrically programmable ROM, electrically erasable ROM, register, hard disk, moveable magnetic disc, CD-ROM or technical field.
To the above-mentioned explanation of the disclosed embodiments, professional and technical personnel in the field are realized or uses the present invention.To be apparent for those skilled in the art to the multiple amendment of these embodiments, General Principle as defined herein can without departing from the spirit or scope of the present invention, realize in other embodiments.Therefore, the present invention can not be restricted to these embodiments shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (4)
1. measure the system that workspace commonly used by engine, it is characterized in that, described system comprises:
Engine bench test data collector, for when engine bench test, gathers the nitrogen oxide emission under different engine and engine torque condition and corrected parameter value;
Road modal data harvester, for when vehicle actual motion, gathers the actual speed of engine, oxides of nitrogen actual emission and actual correction parameter value;
Workspace determinator commonly used by engine, for receiving described engine speed, described engine torque, described nitrogen oxide emission and described corrected parameter value; Preserve the corresponding relation of described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission; Receive the actual speed of described engine, described oxides of nitrogen actual emission and described actual correction parameter value; Inquire about the corresponding relation of described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission, obtain the actual torque of the engine when vehicle actual motion; According to the actual speed of described engine and the actual torque of described engine, obtain the conventional workspace of engine, the conventional workspace of described engine refers to the operating condition of described engine when mating car load, and the conventional workspace of described engine comprises different rotating speeds and perform region corresponding to moment of torsion.
2. system according to claim 1, is characterized in that,
Corrected parameter value comprises intake air temperature, admission pressure and ambient humidity;
Actual correction parameter value comprises actual intake air temperature, actual admission pressure and actual ambient humidity.
3. system according to claim 2, is characterized in that, described road modal data harvester, comprising:
Speed probe, is arranged on vehicle bell housing, for gathering the actual speed of engine;
Oxides of nitrogen determinator, for being arranged at vehicle exhaust pipeline, for gathering oxides of nitrogen actual emission;
Temperature sensor, for gathering actual intake air temperature;
Pressure transducer, for gathering actual admission pressure;
Humidity sensor, for gathering actual ambient humidity.
4. system according to claim 2, is characterized in that, described oxides of nitrogen determinator, comprising:
NOx sensor or fast nitrogen-oxide analyzer.
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| CN103675203B (en) * | 2013-11-21 | 2015-09-09 | 潍柴动力股份有限公司 | A kind of oxides of nitrogen measuring method and system |
| CN105910830B (en) * | 2016-05-13 | 2019-06-25 | 常熟理工学院 | A kind of non-rice habitats diesel engine often uses Operating Condition Spectrum acquisition method |
| CN110608893B (en) * | 2018-06-15 | 2021-06-18 | 北汽福田汽车股份有限公司 | Vehicle emission testing method and device |
| WO2020206649A1 (en) * | 2019-04-11 | 2020-10-15 | 潍柴动力股份有限公司 | Method and apparatus for monitoring state of vehicle exhaust gas emission |
| CN112113776B (en) * | 2020-08-21 | 2021-11-30 | 东风汽车集团有限公司 | Engine working area coverage rate verification method and system |
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