CN102879200A - Method, device and system for determine common working area of engine - Google Patents
Method, device and system for determine common working area of engine Download PDFInfo
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- CN102879200A CN102879200A CN201210351654XA CN201210351654A CN102879200A CN 102879200 A CN102879200 A CN 102879200A CN 201210351654X A CN201210351654X A CN 201210351654XA CN 201210351654 A CN201210351654 A CN 201210351654A CN 102879200 A CN102879200 A CN 102879200A
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Abstract
The invention discloses a method for determine a common working area of an engine, which is used for obtaining the common working area of the engine quickly and accurately. The method includes the following steps: collecting the discharge capacity of nitrogen oxides and corrected parameters at different rotational speed and under different torque conditions of the engine during the rack testing of the engine; storing the corresponding relation between the rotational speed, the torque and the corrected parameters of the engine and the discharge capacity of nitrogen oxides of the engine; collecting the actual rotational speed, the actual discharge capacity of nitrogen oxides and the actual corrected parameters of the engine during the actual operation of a vehicle; then inquiring the corresponding relation between the rotational speed, the torque and the corrected parameters of the engine and the discharge capacity of nitrogen oxides of the engine to obtain the actual torque of the engine during the actual operation of the vehicle; and determining the common working area of the engine as per the actual rotational speed and the actual torque of the engine. The invention further discloses a system and a device for determining the common working area of the engine.
Description
Technical field
The present invention relates to technical field of automobile engine, be specifically related to a kind of method, Apparatus and system of measuring engine workspace commonly used.
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, satisfies simultaneously the automobile exhaust emission standard rules, and the car engine machine technology has been proposed increasingly serious challenge, therefore needs to analyze the workspace commonly used of engine.The workspace commonly used of engine is the main operating condition of mean engine when the coupling car load, namely perform region corresponding to different rotating speeds and moment of torsion.Can for the performance of optimizing engine provides foundation, choose the direction that optimization is determined in the optimal engine configuration according to the workspace commonly used that obtains, direct engine performance optimization coupling and car load coupling reach the optimum oil consumption district consistent with the workspace commonly used of engine.
The workspace commonly used of engine can be measured by engine speed and engine torque, in the prior art, be pressure calculation engine torque after the supercharging when measuring air inlet, and then obtain the workspace commonly used of engine according to engine speed and engine torque.But, calculate workspace commonly used by pressure after measuring supercharging, exist 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 provides a kind of method, Apparatus and system of measuring engine workspace commonly used, calculate that to solve in the prior art by measuring after the supercharging pressure engine commonly uses the workspace, response speed is slow, the problem that accuracy of measurement is lower.
For addressing the above problem, technical scheme provided by the invention is as follows:
A kind of method of measuring engine workspace commonly used, described method comprises:
When engine bench test, after gathering the nitrogen oxide emission and corrected parameter value under different engine and the engine torque condition, 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 the vehicle actual motion, behind actual speed, oxides of nitrogen actual emission and the actual correction parameter value of collection engine, 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 engine when the vehicle actual motion;
According to the actual speed of described engine and the actual torque of described engine, determine the workspace commonly used of engine.
Accordingly, the corrected parameter value comprises intake air temperature, admission pressure and ambient humidity;
The actual correction parameter value comprises actual intake air temperature, actual admission pressure and actual ambient humidity.
Accordingly, gather actual speed, oxides of nitrogen actual emission and the actual correction parameter value of engine, comprising:
Gather the actual speed of engine by the speed probe that arranges at the vehicle bell housing, gather the oxides of nitrogen actual emission by the oxides of nitrogen determinator that arranges at vehicle exhaust pipeline, gather actual intake air temperature 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 quick nitrogen-oxide analyzer.
A kind of device of measuring engine workspace commonly used, described device comprises:
The first receiving element, when engine bench test, after gathering the nitrogen oxide emission and corrected parameter value under different engine and the engine torque condition, receive described engine speed, described engine torque, described corrected parameter value and described nitrogen oxide emission;
The data storage unit is for the corresponding relation of preserving described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission;
The second receiving element, when the vehicle actual motion, after gathering actual speed, oxides of nitrogen actual emission and the actual correction parameter value of engine, receive described actual engine speed, described oxides of nitrogen actual emission and described actual correction parameter value;
Query unit for the corresponding relation of inquiring about described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission, obtains the actual torque of engine when the vehicle actual motion;
Determining unit is used for according to the actual speed of described engine and the actual torque of described engine, determines the workspace commonly used of engine.
Accordingly, the corrected parameter value comprises intake air temperature, admission pressure and ambient humidity;
The actual correction parameter value comprises actual intake air temperature, actual admission pressure and actual ambient humidity.
A kind of system that measures engine workspace commonly used, described system comprises:
The engine bench test data collector is used for gathering nitrogen oxide emission and corrected parameter value under different engine and the engine torque condition when engine bench test;
Road spectrum data collector is used for gathering actual speed, oxides of nitrogen actual emission and the actual correction parameter value of engine when the vehicle actual motion;
Engine workspace commonly used determinator is used 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 engine when the vehicle actual motion; According to the actual speed of described engine and the actual torque of described engine, obtain the workspace commonly used of engine.
Accordingly, the corrected parameter value comprises intake air temperature, admission pressure and ambient humidity;
The actual correction parameter value comprises actual intake air temperature, actual admission pressure and actual ambient humidity.
Accordingly, described road spectrum data collector comprises:
Speed probe is arranged on the vehicle bell housing, is used for gathering the actual speed of engine;
The oxides of nitrogen determinator is used for being arranged at vehicle exhaust pipeline, is used for gathering the oxides of nitrogen actual emission;
Temperature sensor is used for gathering actual intake air temperature;
Pressure transducer is used for gathering actual admission pressure;
Humidity sensor is used for gathering actual ambient humidity.
Accordingly, described oxides of nitrogen determinator comprises: NOx sensor or quick nitrogen-oxide analyzer.
This shows, the present invention has following beneficial effect:
The present invention utilizes engine oxides of nitrogen determinator directly to measure oxides of nitrogen actual emission and correlation parameter, according to the oxides of nitrogen actual emission of preserving when the engine bench test and the corresponding relation of correlation parameter and engine torque, obtain the actual torque of engine, and then definite engine workspace commonly used, measure fast response time, can access more accurately engine torque, thereby improve the accuracy that engine workspace commonly used is measured, for Engine Performance Optimization coupling and car load coupling provide the more reference of optimization.
Description of drawings
Fig. 1 is the process flow diagram that the present invention measures engine working set approach commonly used;
Fig. 2 is the schematic diagram that the present invention measures engine workspace commonly used device;
Fig. 3 is the structural representation that the present invention measures engine workspace system commonly used;
Fig. 4 is the schematic diagram of spectrum data collector in road among the present invention.
Embodiment
For above-mentioned purpose of the present invention, feature and advantage can be become apparent more, below in conjunction with the drawings and specific embodiments the embodiment of the invention is described in further detail.
A kind of method of measuring engine workspace commonly used provided by the invention, for calculating that by measuring after the supercharging pressure engine commonly uses the workspace in the prior art, response speed is slow, the problem that accuracy of measurement is lower, discharge capacity by the oxides of nitrogen (NOx) of measuring vehicle is proposed, calculate the actual torque of engine, the workspace commonly used of measuring engine according to actual speed and the actual torque of vehicle again.
Based on above-mentioned thought, referring to shown in Figure 1, the present invention measures the method for engine workspace commonly used, may further comprise the steps:
Step 101: when engine bench test, behind the nitrogen oxide emission and corrected parameter value under collection different engine and the engine torque condition, receive engine speed, engine torque, corrected parameter value and nitrogen oxide emission.
Step 102: the corresponding relation of preserving engine speed, engine torque and corrected parameter value and nitrogen oxide emission.
When engine pedestal carries out the test of NOx discharge capacity universal characteristic, measure the nitrogen oxide emission under different engine and the engine torque condition, the 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, can set up the path spectruming analysis database, in the path spectruming analysis database, preserve the corresponding relation of engine speed, engine torque and corrected parameter value and nitrogen oxide emission.
Step 103: when the vehicle actual motion, behind actual speed, oxides of nitrogen actual emission and the actual correction parameter value of collection engine, receive actual engine speed, oxides of nitrogen actual emission and actual correction parameter value.
Wherein, the actual correction parameter is corresponding to corrected parameter, and the actual correction parameter value can comprise actual intake air temperature, actual admission pressure and actual ambient humidity.
When carrying out the car load matching test, be in the vehicle actual motion, gather the actual speed of engine by the speed probe that arranges at the vehicle bell housing, gather the oxides of nitrogen actual emission by the oxides of nitrogen determinator (for example oxides of nitrogen N0x sensor or fast oxides of nitrogen N0x analyser) that arranges at vehicle exhaust pipeline, gather actual intake air temperature 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, the actual torque of acquisition engine when the vehicle actual motion.
Engine is in practical work process, under different engine speed, increase along with load, the N0x discharge capacity of engine also increases, after measuring actual engine speed, oxides of nitrogen actual emission and actual correction parameter value, can inquire about the path spectruming analysis database, obtain the actual torque of engine when the vehicle actual motion.
Step 105: according to the actual speed of engine and the actual torque of engine, determine the workspace commonly used of engine.
The workspace commonly used 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 workspace commonly used of engine.
Like this, utilize engine oxides of nitrogen determinator directly to measure oxides of nitrogen actual emission and correlation parameter, according to the oxides of nitrogen actual emission of preserving when the engine bench test and the corresponding relation of correlation parameter and engine torque, obtain the actual torque of engine, and then the workspace commonly used of definite engine, measure fast response time, can access more accurately engine torque, thereby improve the accuracy that engine workspace commonly used is measured, for Engine Performance Optimization coupling and car load coupling provide the more reference of optimization.
Accordingly, referring to shown in Figure 2, the present invention also provides a kind of device of measuring engine workspace commonly used, and this device comprises:
The first receiving element 21, data storage unit 22, the second receiving element 23, query unit 24 and determining unit 25.
Wherein, the first receiving element 21, be used for when engine bench test, behind the nitrogen oxide emission and corrected parameter value under collection different engine and the engine torque condition, receive engine speed, engine torque, corrected parameter value and nitrogen oxide emission;
The second receiving element 23 is used for when the vehicle actual motion, behind actual speed, oxides of nitrogen actual emission and the actual correction parameter value of collection engine, receives actual engine speed, oxides of nitrogen actual emission and actual correction parameter value;
Determining unit 25 is used for according to the actual speed of engine and the actual torque of engine, determines the workspace commonly used of engine.
In the above-described embodiments, the corrected parameter value can comprise intake air temperature, admission pressure and ambient humidity; The actual correction parameter value can comprise actual intake air temperature, actual admission pressure and actual ambient humidity.
The second receiving element 23, concrete being used for when the vehicle actual motion, gather the actual speed of engine by the speed probe that arranges at the vehicle bell housing, gather the oxides of nitrogen actual emission by the oxides of nitrogen determinator that arranges at vehicle exhaust pipeline, gather actual intake air temperature by temperature sensor, gather actual admission pressure 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, the oxides of nitrogen determinator can be NOx sensor or quick nitrogen-oxide analyzer.
Accordingly, referring to shown in Figure 3, the present invention also provides a kind of system that measures engine workspace commonly used, and this system comprises:
Engine bench test data collector 1, road spectrum data collector 3 and engine workspace commonly used determinator 2.
Wherein, engine bench test data collector 1 is used for gathering nitrogen oxide emission and corrected parameter value under different engine and the engine torque condition when engine bench test;
Road spectrum data collector 3 is used for gathering actual speed, oxides of nitrogen actual emission and the actual correction parameter value of engine when the vehicle actual motion;
Engine workspace commonly used determinator 2 is used 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 actual speed, oxides of nitrogen actual emission and the actual correction parameter value of engine; The corresponding relation of inquiry engine speed, engine torque and corrected parameter value and nitrogen oxide emission, the actual torque of acquisition engine when the vehicle actual motion; According to the actual speed of engine and the actual torque of engine, obtain the workspace commonly used of engine.
Wherein, engine workspace commonly used determinator 2 can be a kind of device of measuring engine workspace commonly used in above-described embodiment.
In addition, referring to shown in Figure 4, road spectrum data collector 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 the vehicle bell housing, is used for gathering the actual speed of engine;
Oxides of nitrogen determinator 32 is used for being arranged at vehicle exhaust pipeline, is used for gathering the oxides of nitrogen actual emission; Oxides of nitrogen determinator 32 can be NOx sensor or quick nitrogen-oxide analyzer.
The corrected parameter value can comprise intake air temperature, admission pressure and ambient humidity; The 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 gathers nitrogen oxide emission and corrected parameter value under different engine and the engine torque condition when engine bench test;
Engine workspace commonly used determinator 2 receives 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 spectrum data collector 3 is when the vehicle actual motion, gather actual speed, oxides of nitrogen actual emission and the actual correction parameter value of engine, specifically can by speed probe 31 gather engines actual speed, gather the oxides of nitrogen actual emissions, gather actual intake air temperature, gather actual admission pressure, gather actual ambient humidity by humidity sensor 35 by pressure transducer by temperature sensor 33 by oxides of nitrogen determinator 32;
Engine workspace commonly used determinator 2 receives actual speed, oxides of nitrogen actual emission and the actual correction parameter value of engine; The corresponding relation of inquiry engine speed, engine torque and corrected parameter value and nitrogen oxide emission, the actual torque of acquisition engine when the vehicle actual motion; According to the actual speed of engine and the actual torque of engine, finally obtain the workspace commonly used of engine.
Like this, utilize engine oxides of nitrogen determinator directly to measure oxides of nitrogen actual emission and correlation parameter, according to the oxides of nitrogen actual emission of preserving when the engine bench test and the corresponding relation of correlation parameter and engine torque, obtain the actual torque of engine, and then the workspace commonly used of definite engine, measure fast response time, can access more accurately engine torque, thereby improve the accuracy that engine workspace commonly used is measured, for Engine Performance Optimization coupling and car load coupling provide the more reference of optimization.
Need to prove, each embodiment adopts the mode of going forward one by one to describe in this instructions, and what each embodiment stressed is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.For the disclosed system of embodiment or device, because it is corresponding with the disclosed method of embodiment, so description is fairly simple, relevant part partly illustrates referring to method and gets final product.
Also need to prove, in this article, relational terms such as the first and second grades only is used for an entity or operation are separated with another entity or operational zone, and not necessarily requires or hint and have the relation of any this reality or sequentially between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby not only comprise those key elements so that comprise process, method, article or the equipment of a series of key elements, but also comprise other key elements of clearly not listing, or also be included as the intrinsic key element of this process, method, article or equipment.In the situation that not more restrictions, the key element that is limited by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
The method of describing in conjunction with embodiment disclosed herein or the step of algorithm can directly use the software module of hardware, processor execution, and perhaps the combination of the two is implemented.Software module can place the storage medium of any other form 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 the technical field.
To the above-mentioned explanation of the disclosed embodiments, make this area professional and technical personnel can realize or use the present invention.Multiple modification to these embodiment will be apparent concerning those skilled in the art, and General Principle as defined herein can be in the situation that do not break away from the spirit or scope of the present invention, in other embodiments realization.Therefore, the present invention will can not be restricted to these embodiment shown in this article, but will meet the widest scope consistent with principle disclosed herein and features of novelty.
Claims (10)
1. a method of measuring engine workspace commonly used is characterized in that, described method comprises:
When engine bench test, after gathering the nitrogen oxide emission and corrected parameter value under different engine and the engine torque condition, 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 the vehicle actual motion, behind actual speed, oxides of nitrogen actual emission and the actual correction parameter value of collection engine, 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 engine when the vehicle actual motion;
According to the actual speed of described engine and the actual torque of described engine, determine the workspace commonly used of engine.
2. method according to claim 1 is characterized in that,
The corrected parameter value comprises intake air temperature, admission pressure and ambient humidity;
The actual correction parameter value comprises actual intake air temperature, actual admission pressure and actual ambient humidity.
3. method according to claim 2 is characterized in that, gathers actual speed, oxides of nitrogen actual emission and the actual correction parameter value of engine, comprising:
Gather the actual speed of engine by the speed probe that arranges at the vehicle bell housing, gather the oxides of nitrogen actual emission by the oxides of nitrogen determinator that arranges at vehicle exhaust pipeline, gather actual intake air temperature by temperature sensor, gather actual admission pressure by pressure transducer, gather actual ambient humidity by humidity sensor.
4. method according to claim 3 is characterized in that, described oxides of nitrogen determinator comprises:
NOx sensor or quick nitrogen-oxide analyzer.
5. a device of measuring engine workspace commonly used is characterized in that, described device comprises:
The first receiving element, when engine bench test, after gathering the nitrogen oxide emission and corrected parameter value under different engine and the engine torque condition, receive described engine speed, described engine torque, described corrected parameter value and described nitrogen oxide emission;
The data storage unit is for the corresponding relation of preserving described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission;
The second receiving element, when the vehicle actual motion, after gathering actual speed, oxides of nitrogen actual emission and the actual correction parameter value of engine, receive described actual engine speed, described oxides of nitrogen actual emission and described actual correction parameter value;
Query unit for the corresponding relation of inquiring about described engine speed, described engine torque and described corrected parameter value and described nitrogen oxide emission, obtains the actual torque of engine when the vehicle actual motion;
Determining unit is used for according to the actual speed of described engine and the actual torque of described engine, determines the workspace commonly used of engine.
6. device according to claim 5 is characterized in that,
The corrected parameter value comprises intake air temperature, admission pressure and ambient humidity;
The actual correction parameter value comprises actual intake air temperature, actual admission pressure and actual ambient humidity.
7. a system that measures engine workspace commonly used is characterized in that, described system comprises:
The engine bench test data collector is used for gathering nitrogen oxide emission and corrected parameter value under different engine and the engine torque condition when engine bench test;
Road spectrum data collector is used for gathering actual speed, oxides of nitrogen actual emission and the actual correction parameter value of engine when the vehicle actual motion;
Engine workspace commonly used determinator is used 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 engine when the vehicle actual motion; According to the actual speed of described engine and the actual torque of described engine, obtain the workspace commonly used of engine.
8. method according to claim 7 is characterized in that,
The corrected parameter value comprises intake air temperature, admission pressure and ambient humidity;
The actual correction parameter value comprises actual intake air temperature, actual admission pressure and actual ambient humidity.
9. system according to claim 8 is characterized in that, described road spectrum data collector comprises:
Speed probe is arranged on the vehicle bell housing, is used for gathering the actual speed of engine;
The oxides of nitrogen determinator is used for being arranged at vehicle exhaust pipeline, is used for gathering the oxides of nitrogen actual emission;
Temperature sensor is used for gathering actual intake air temperature;
Pressure transducer is used for gathering actual admission pressure;
Humidity sensor is used for gathering actual ambient humidity.
10. system according to claim 8 is characterized in that, described oxides of nitrogen determinator comprises:
NOx sensor or quick nitrogen-oxide analyzer.
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| CN103675203A (en) * | 2013-11-21 | 2014-03-26 | 潍柴动力股份有限公司 | Method and system for measuring nitrogen oxides |
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| CN102879200B (en) | 2016-03-30 |
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