CN204666287U - The moment of torsion road survey system of electronic fuel injection engine - Google Patents
The moment of torsion road survey system of electronic fuel injection engine Download PDFInfo
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- CN204666287U CN204666287U CN201520421255.5U CN201520421255U CN204666287U CN 204666287 U CN204666287 U CN 204666287U CN 201520421255 U CN201520421255 U CN 201520421255U CN 204666287 U CN204666287 U CN 204666287U
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Abstract
The utility model discloses a kind of moment of torsion road survey system of electronic fuel injection engine, the connecting line between fuel filter and fuel dispensing tube is provided with oil temperature sensor; Engine is provided with speed probe and engine coolant temperature sensor; Pipeline between engine and exhaust after treatment system is provided with exhaust gas temperature sensor; Air flowmeter, oil temperature sensor, speed probe, engine coolant temperature sensor are all connected with data acquisition system (DAS) with exhaust gas temperature sensor; Data acquisition system (DAS) is connected with electric control system ECU; Electric control system ECU receives the real data of data acquisition system, engine operating parameter and the three-dimensional MAP of nominal torque correlativity is obtained according to bench test, the actual torque of engine is inquired about or calculated, and actual torque is revised, export actual speed and moment of torsion, as the actual measurement parameter of engine and wheel box Optimized Matching.The utility model structure is simple, and reliable test result, is not affected by human factors.
Description
Technical field
The utility model relates to technical field of internal combustion engines, particularly relates to the moment of torsion road survey system of electronic fuel injection engine.
Background technology
If engine and wheel box matching bad, directly can affect vehicle performance, the matched well of the PTO such as engine and wheel box can improve the dynamic property of car load, economy and emission performance.
The characteristic of wheel box, under allowing and meeting the different operating mode of vehicle, for the different demands of wheel end moment of torsion, makes vehicle can start to walk smoothly, accelerate and cruise.And in the matching primitives process of engine and wheel box, need the parameter such as rotating speed and moment of torsion pre-entering engine.When mating engine and wheel box, some input parameters of usual needs, these input parameters generally carry out Steady Experimental by engine and draw on stand, and there is the transient condition of a large amount of moment of torsion sudden change such as starting, acceleration, deceleration in the course of the work in automobile, the data of bench test can not contain all operating modes, therefore need the engine output torque in the typical operation of measured automobiles.
At present, usually use twist counter to measure moment of torsion, twist counter is the axle of one section of known diameter and elastic modulus, foil gauge is attached to the side of twist counter, utilizes the relation calculated torque of stress and strain.But because the rigidity of twist counter is under normal circumstances very large, the deflection when stressed is little, and the torque error measured by this method is comparatively large, and precision comparison is low, and the Capability Requirement of experimental result strained paste position, method of attaching and tester is larger.
Utility model content
The purpose of this utility model is exactly to solve the problem, a kind of moment of torsion road survey system of electronic fuel injection engine is provided, the method utilizes engine speed, air inflow, mutual relationship between automatically controlled air-fuel ratio and moment of torsion, get final product the moment of torsion of testing automobile in road driving process, for the Optimized Matching of engine and wheel box provides data.
To achieve these goals, the utility model adopts following technical scheme:
A moment of torsion road survey system for electronic fuel injection engine, comprising:
The fuel tank connected successively, fuel pump, fuel filter, fuel dispensing tube and engine, described fuel dispensing tube is connected with fuel tank by oil pressure regulator; Described engine is connected with wheel box, air cleaner and exhaust after treatment system respectively, and the connecting line of described engine and air cleaner is provided with air flowmeter;
Connecting line between described fuel filter and fuel dispensing tube is provided with oil temperature sensor; Described engine is provided with speed probe and engine coolant temperature sensor; Pipeline between described engine and exhaust after treatment system is provided with exhaust gas temperature sensor; Described air flowmeter, oil temperature sensor, speed probe, engine coolant temperature sensor are all connected with data acquisition system (DAS) with exhaust gas temperature sensor; Described data acquisition system (DAS) is connected with electric control system ECU;
Data analysis module in described electric control system ECU, receive the real data of data acquisition system, engine operating parameter and the three-dimensional MAP of nominal torque correlativity is obtained according to bench test, the actual torque of engine is inquired about or calculated, and actual torque is revised, export actual speed and moment of torsion, thus actual speed and moment of torsion become the actual measurement parameter of engine and wheel box Optimized Matching.
Described fuel tank, fuel pump, fuel filter, to be connected successively by oil feed line between fuel dispensing tube and engine.
Described engine is connected by air pipe line with between air cleaner.
Described engine is connected by transmission shaft with between wheel box.
Described engine is connected by gas exhaust piping with exhaust after treatment system.
Engine speed sensor gathers the actual speed of engine, and tach signal is transferred to data acquisition system (DAS);
The delivery temperature of temperature and exhaust gas temperature sensor collection engine that engine coolant temperature sensor gathers engine is all as the correction of torque arithmetic.
In engine working process, fuel oil is first pumped into fuel filter from fuel tank by fuel pump, and fuel filter filters out the impurity in fuel oil, then enters fuel dispensing tube, the temperature of the oil temperature sensor synchronous acquisition fuel oil in pipeline, as the corrected parameter of follow-up torque arithmetic;
Air is after air cleaner impurity screening, and flow through air flowmeter and enter engine participation burning, air flowmeter measurement enters the actual air inflow of engine, and measurement result is transferred to data acquisition system (DAS).
Fuel oil enters the spraying system of engine through fuel dispensing tube, and spray burning externally does work, and when in fuel dispensing tube, oil pressure is too high, part fuel oil flows back to fuel tank by oil pressure regulator.
Be integrated with data analysis module in electric control system ECU, during work electric-control system automatically controlled air-fuel ratio by with data acquisition system to parameter be together transferred to data analysis module in electric control system ECU.Described data acquisition system to parameter comprise: the actual exhaust air temperature of the actual speed of engine, the actual temperature of engine, engine, the actual temperature of fuel oil, actual air inflow.
The relation of the rated engine speed utilizing bench test to demarcate in advance, specified air inflow, specified automatically controlled air-fuel ratio and nominal torque, formulates engine operating parameter and moment of torsion correlativity three-dimensional MAP;
Gather actual speed, the actual air inflow data of engine, automatically controlled air-fuel ratio is obtained from electric-control system, and necessary process and correction are carried out to data, utilize the method for Cokriging interpolation to calculate the real-time moment of torsion of engine when vehicular engine travels on road.
A moment of torsion road survey method for electronic fuel injection engine, comprises the following steps:
Step (1): demarcate the rated speed of engine, specified air inflow, relation between specified automatically controlled air-fuel ratio and nominal torque in advance according to bench test, formulate engine operating parameter and the three-dimensional MAP of nominal torque correlativity, and by described three-dimensional MAP input engine electric-controlled system ECU; Described engine operating parameter comprises: rated speed, specified air inflow and specified automatically controlled air-fuel ratio;
Step (2): the data of collection are passed to electric control system ECU by data acquisition system (DAS), the data of described collection comprise: the actual exhaust air temperature of the actual speed of engine, the actual temperature of engine, engine, the actual temperature of fuel oil, actual air inflow; Automatically controlled for reality air-fuel ratio is also passed to electric control system ECU by electric-control system;
Step (3): then the data of electric control system ECU to step (1) and step (2) carry out mean filter process, remove step (2) survey singular point in data; Electric control system ECU exports rotating speed and the moment of torsion of real work circulation, as the actual measurement parameter of engine and wheel box Optimized Matching.
Singular point in described step (3) refers to: survey data relay speed depart from mean speed 1% point, survey temperature departure medial temperature 5% in data point or survey the point that air inflow in data departs from mean air entry amount 5%.
The treatment step of described step (3) is:
Step (3-1): according to engine operating parameter and the three-dimensional MAP of moment of torsion correlativity of step (1), the actual speed of the engine measured by utilization, actual air inflow and the automatically controlled air-fuel ratio of reality are as known parameters, inquire about rated speed, specified air inflow, specified automatically controlled air-fuel ratio and nominal torque corresponding relation in engine operating parameter and the three-dimensional MAP of moment of torsion correlativity, inquire about or calculate the moment of torsion of engine;
Step (3-2): utilize the actual torque of actual exhaust air temperature parameter to the engine of step (3-1) of the actual temperature of fuel oil, the actual temperature of engine and the engine collected to revise according to GB/T 15746-2011.
The inquiry of described step (3-1) or the torquing step calculating engine are:
First, in the x-axis of engine operating parameter and moment of torsion correlativity three-dimensional MAP, corresponding surface is searched according to actual measurement rotating speed;
Then, in the y-axis of the three-dimensional MAP of engine operating parameter and moment of torsion correlativity, search corresponding line according to actual air inflow, then on engine operating parameter and moment of torsion correlativity three-dimensional MAP air-fuel ratio level line, search corresponding point according to the automatically controlled air-fuel ratio of reality that electric-control system provides;
Finally, the corresponding point jointly determined according to actual speed, actual air inflow and the automatically controlled air-fuel ratio of reality inquire about the actual torque of engine in the z-axis of engine operating parameter and the three-dimensional MAP of moment of torsion correlativity;
If survey rotating speed, actual air inflow and the automatically controlled air-fuel ratio of reality and coordinate axis scale merit or level line to overlap, then the instantaneous torque of z-axis inquiry engine is the actual torque of engine;
If the automatically controlled air-fuel ratio discord coordinate axis scale merit of actual measurement rotating speed, actual air inflow and reality or level line overlap, then the method for Cokriging interpolation is utilized to calculate the actual torque of engine.
The beneficial effects of the utility model are:
The utility model utilizes bench test to demarcate engine speed, air inflow, automatically controlled air-fuel ratio and moment of torsion relation engine operating parameter and the three-dimensional MAP of moment of torsion correlativity in advance, and in MAP, four in mutually corresponding relation.Measurement mechanism is utilized to gather rotating speed, the air inflow of engine, automatically controlled air-fuel ratio is obtained from electric-control system, after data are processed, just the method for Cokriging interpolation calculation can be utilized to calculate the real-time moment of torsion of vehicular engine typical operation, and the Optimized Matching design for engine and wheel box provides the parameter of needs.The utility model method of testing test structure is simple, reliable test result, and is not affected by human factors.
Accompanying drawing explanation
Fig. 1 is the engine torque measuring system schematic diagram (figure to use the method on certain electronic injection gasoline engine) of the utility model embodiment;
Wherein, 1 main fuel pipeline, 2 fuel tanks, 3 fuel filters, 4 oil temperature sensors, 5 oil pressure regulators, 6 fuel dispensing tubes, 7 air flowmeter, 8 air cleaner, 9 fuel pumps, 10 electric control system ECUs, 11 data acquisition system (DAS)s, 12 engine speed sensors, 13 engine coolant temperature sensor, 14 exhaust gas temperature sensors, 15 engines, 16 exhaust after treatment system, 17 wheel boxes.
Embodiment
Below in conjunction with accompanying drawing and embodiment, the utility model is described in further detail.
The structure of the utility model torch measuring system as shown in Figure 1, Fig. 1 is the embodiment of the utility model on certain electric control gasoline engine, and torch measuring system comprises main fuel pipeline 1, fuel tank 2, fuel filter 3, oil temperature sensor 4, oil pressure regulator 5, fuel dispensing tube 6, air flowmeter 7, air cleaner 8, fuel pump 9, electric control system ECU 10, data acquisition system (DAS) 11, engine speed sensor 12, engine coolant temperature sensor 13, exhaust gas temperature sensor 14, engine 15, exhaust after treatment system 16, wheel box 17.
Fuel tank 2, fuel pump 9, fuel filter 3, fuel dispensing tube 6, oil pressure regulator 5 and engine 15 are connected successively by oil feed line; Air cleaner 8, air flowmeter 7 are connected by air pipe line successively with engine 15; Engine 15 is connected by transmission shaft with wheel box 17; Engine 15 is connected by gas exhaust piping with exhaust after treatment system 16.
Vapour pressure regulator 5 regulates the oil pressure in fuel dispensing tube 6, and when fuel pressure is too high, part fuel oil is come back in fuel tank 2 by gasoline pressure regulator, thus keeps the pressure in fuel dispensing tube not too high.
Connecting line between fuel filter 3 and fuel dispensing tube 6 is arranged oil temperature sensor 4, oil temperature sensor 4 is connected with data acquisition system (DAS) 11.
Air flowmeter 7 is arranged between air cleaner 8 and engine 15; Air flowmeter 7 is connected with data acquisition system (DAS) 11.
Engine 15 is respectively arranged with engine speed sensor 12 and engine coolant temperature sensor 13; Described engine speed sensor 12 is connected with data acquisition system (DAS) 11 respectively with engine coolant temperature sensor 13.Engine speed sensor 12 gathers the rotating speed of engine 15, and tach signal is transferred to data acquisition system (DAS) 11; The gasoline temperature collected, air inflow, engine speed and engine temperature signal are converted to digital data transmission to electric control system ECU 10 by data acquisition system (DAS) 11; ECU sends air-fuel ratio signal to electric control system ECU; Engine coolant temperature sensor 13 gathers the correction of temperature as torque arithmetic of engine 15.
In engine working process, fuel pump 9 continues gasoline to be delivered to fuel dispensing tube by fuel filter, and fuel filter 3 filters out the impurity in gasoline.Gasoline enters the spraying system of engine 15 through fuel dispensing tube 6, and spray burning externally does work, when fuel dispensing tube intermediate fuel oil hypertonia, part fuel oil is come back in fuel tank 2 by oil pressure regulator, thus keeps the pressure in fuel dispensing tube unlikely too high.Air flowmeter 7 measures total air inflow of engine 15 and real-time air inflow, and engine speed sensor 12 gathers the real-time rotate speed of engine 15, and tach signal is transferred to data acquisition system (DAS) 11.The correction that the temperature that engine coolant temperature sensor 13 gathers engine 15 calculates as instantaneous torque.The data collected process by the data analysis module in electric control system ECU 10, the operational factor utilizing the operational parameter data of this engine 15 obtained at platform experiment to draw and the three-dimensional MAP of moment of torsion correlativity, reflect the parameters such as the power of corresponding operating point, moment of torsion, rate of load condensate, utilize fuel oil temperature, engine temperature and the delivery temperature collected to revise result of calculation simultaneously, ensure the accuracy of calculated torque.
By reference to the accompanying drawings embodiment of the present utility model is described although above-mentioned; but the restriction not to the utility model protection domain; one of ordinary skill in the art should be understood that; on the basis of the technical solution of the utility model, those skilled in the art do not need to pay various amendment or distortion that creative work can make still within protection domain of the present utility model.
Claims (7)
1. a moment of torsion road survey system for electronic fuel injection engine, it is characterized in that, comprising: the fuel tank connected successively, fuel pump, fuel filter, fuel dispensing tube and engine, described fuel dispensing tube is connected with fuel tank by oil pressure regulator; Described engine is connected with wheel box, air cleaner and exhaust after treatment system respectively, and the connecting line of described engine and air cleaner is provided with air flowmeter;
Connecting line between described fuel filter and fuel dispensing tube is provided with oil temperature sensor; Described engine is provided with speed probe and engine coolant temperature sensor; Pipeline between described engine and exhaust after treatment system is provided with exhaust gas temperature sensor; Described air flowmeter, oil temperature sensor, speed probe, engine coolant temperature sensor are all connected with data acquisition system (DAS) with exhaust gas temperature sensor; Described data acquisition system (DAS) is connected with electric control system ECU.
2. the moment of torsion road survey system of a kind of electronic fuel injection engine as claimed in claim 1, is characterized in that,
Described fuel tank, fuel pump, fuel filter, to be connected successively by oil feed line between fuel dispensing tube and engine.
3. the moment of torsion road survey system of a kind of electronic fuel injection engine as claimed in claim 1, is characterized in that,
Described engine is connected by air pipe line with between air cleaner.
4. the moment of torsion road survey system of a kind of electronic fuel injection engine as claimed in claim 1, is characterized in that,
Described engine is connected by transmission shaft with between wheel box.
5. the moment of torsion road survey system of a kind of electronic fuel injection engine as claimed in claim 1, is characterized in that,
Described engine is connected by gas exhaust piping with exhaust after treatment system.
6. the moment of torsion road survey system of a kind of electronic fuel injection engine as claimed in claim 1, is characterized in that,
Engine speed sensor gathers the actual speed of engine, and tach signal is transferred to data acquisition system (DAS).
7. the moment of torsion road survey system of a kind of electronic fuel injection engine as claimed in claim 1, is characterized in that,
In engine working process, fuel oil is first pumped into fuel filter from fuel tank by fuel pump, and fuel filter filters out the impurity in fuel oil, then enters fuel dispensing tube, the temperature of the oil temperature sensor synchronous acquisition fuel oil in pipeline, as the corrected parameter of follow-up torque arithmetic;
Air is after air cleaner impurity screening, and flow through air flowmeter and enter engine participation burning, air flowmeter measurement enters the actual air inflow of engine, and measurement result is transferred to data acquisition system (DAS);
Fuel oil enters the spraying system of engine through fuel dispensing tube, and spray burning externally does work, and when in fuel dispensing tube, oil pressure is too high, part fuel oil flows back to fuel tank by oil pressure regulator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520421255.5U CN204666287U (en) | 2015-06-17 | 2015-06-17 | The moment of torsion road survey system of electronic fuel injection engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520421255.5U CN204666287U (en) | 2015-06-17 | 2015-06-17 | The moment of torsion road survey system of electronic fuel injection engine |
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| CN204666287U true CN204666287U (en) | 2015-09-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520421255.5U Expired - Fee Related CN204666287U (en) | 2015-06-17 | 2015-06-17 | The moment of torsion road survey system of electronic fuel injection engine |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931170A (en) * | 2015-06-17 | 2015-09-23 | 山东大学 | Electronic injection engine torque road measurement system and method |
| CN106679862A (en) * | 2016-12-30 | 2017-05-17 | 潍柴动力股份有限公司 | Engine actual output torque measuring method and system |
-
2015
- 2015-06-17 CN CN201520421255.5U patent/CN204666287U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104931170A (en) * | 2015-06-17 | 2015-09-23 | 山东大学 | Electronic injection engine torque road measurement system and method |
| CN104931170B (en) * | 2015-06-17 | 2016-05-25 | 山东大学 | The moment of torsion road survey system and method for BBG |
| CN106679862A (en) * | 2016-12-30 | 2017-05-17 | 潍柴动力股份有限公司 | Engine actual output torque measuring method and system |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150923 Termination date: 20170617 |
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| CF01 | Termination of patent right due to non-payment of annual fee |