CN2171854Y

CN2171854Y - Intelligence engine detecting instrument

Info

Publication number: CN2171854Y
Application number: CN 93223385
Authority: CN
Inventors: 孙林
Original assignee: Individual
Current assignee: Individual
Priority date: 1993-09-08
Filing date: 1993-09-08
Publication date: 1994-07-13
Anticipated expiration: 2003-09-08

Abstract

The utility model relates to an intelligent engine detecting instrument, which is composed of a data detecting and collecting system, a data processing system and a display system. The utility model provides with an operating condition control device of an engine, and the operating condition control device of the engine can control an output terminal to send out an operating condition control value according to the operating condition on a data analyzing and processing system. So the element actions on the engine can be controlled. Therefore, the operating condition of the engine can be controlled. By adopting the automatic actuating mechanism, the engine detector can control the operating condition detecting of the engine according to the operation control command signal to be sent out from a computer system, and the utility model can correspondingly collect the data simultaneously. Therefore, the utility model can accomplish the full-automatic actuating processes, such as data collection, operating condition control, detecting data sending-out and fault report at last. Therefore, the utility model not only increases the detecting speed, but also increases the detecting accuracy because the influence of artificial factor is eliminated.

Description

Intelligence engine detecting instrument

The utility model relates to a kind of motor car engine detector, particularly a kind of full automatic vehicle engine detector.

Traditional engine detector mostly is the instrument with individual event measuring ability, as load dynamometer, engine ignition timing instrument, engine speed indicator, exhaust analyzer etc.When operation, need to detect item by item, and need experienced technician that each single index is carried out analysis-by-synthesis, just can judge the breakdown in the motor place.Therefore, its testing process is loaded down with trivial details, time-consuming, and the accuracy of its testing result depends on testing staff's determined level on sizable degree.In recent years, some engine automatic diagnostic instruments have appearred, as disclosed automatic diagnostic instrument among BG2211481, DE3841424, the US5010487.The advantage of this class detector is that because every index all detects simultaneously, detection signal comes overall treatment by microcomputer, thereby has shortened and testing process, and part has been got rid of artificial factor in deterministic process.But, in this class diagnostic equipment, do not get rid of artificial factor in operation (operating mode) process.Because family curve, characteristic index difference that engine reflects under different operating modes, also different with the performance degree of correlation of each parts, therefore, so far on the detector that is adopted, or point out several fixing operating process by a display board of installing on it, or rule of thumb come the control operation process by operating personnel, for example make engine enter operating modes such as idling, acceleration, anxious acceleration.Any situation no matter, operating process is all carried out by the people.Consequent problem is, first, implementation is subjected to various artificial factor, influence as carelessness of operant level, operator etc. and can cause test condition inaccurate, thus influence the reliability of testing result.The second,, that in microcomputer, preset, that obtain with computing method or statistical method often as the reference data that compares with measured data, at the data of certain several vehicle because on this class detector.The course of work of pointing out on its display board is also set at these several vehicles.Therefore when detecting the vehicle motor of other types, suggested operating mode, exist certain deviation, thereby cause that testing conditions is incorrect maybe can not to cause the optimum measurement operating mode as the range of speeds and actual answering between the measuring car type operating mode.

The purpose of this utility model is, a kind of intelligent engine detector that overcomes above-mentioned defective is provided.The implementation of the operation operating mode of this detector is carried out fully automatically, and the operation operating mode adapts with tested vehicle.Thereby operating personnel only need select to detect vehicle and engine model, and automatic tester can automatically be finished the overall process that is controlled to the output of testing result by operating mode.

The technical solution of the utility model is, on an intelligent engine detector that constitutes by data measuring and acquisition system, data handling system and display system, an engine operating condition control device is set, the operating mode controlling value that this engine operating condition control device provides according to the described operating mode control output end on the described data analysis disposal system, operating mode element action on the control engine, thereby the operating mode of control engine.

Adopt this automatic executing agency, the operation control command signal that the engine detector is provided according to microsystem is controlled the detection operating mode of engine, carry out corresponding data acquisition simultaneously, thereby realized providing the full-automatic implementation that detects data and Trouble Report until at last from data acquisition, operating mode control.Like this, not only improved detection speed, and owing to got rid of artificial factor, thereby the accuracy that detects improved.

Further specify the optimum implementation of the intelligent engine detector of the utility model hereinafter with reference to accompanying drawing.

Fig. 1 is the fundamental diagram of the intelligent engine detector of expression the utility model;

Fig. 2 is the structural representation of operating mode control section in the detector shown in Figure 1;

Fig. 3 is the synoptic diagram of the structure of the actuating unit of operating mode control section in the detector shown in Figure 1.

As shown in Figure 1, engine detector of the present utility model is to be made of signals collecting, arrangement, standardized system, data analysis disposal system, engine operating condition control device, demonstration, printing equipment and vehicle parameter database and test procedure database.Wherein, formation and the mutual relationship about signals collecting, arrangement, preparation device and data analysis treating apparatus and demonstration, printing equipment and database all belongs to prior art in known engine intelligent detector.For example, in detector of the present utility model, signal pickup assembly can adopt some known signal transducers, as with the current changing signal on the primary coil of the working current of current signal sensor detection of engine starter motor, firing system, change with the high pressure on voltage sensor senses accumulator termination voltage, the ignition coil secondary coil, perhaps can also adopt speed pickup, vibration transducer 9, induction-pipe depression sensor or temperature sensor as signal pickup assembly.To be converted into the standard analog electric signal and convert standard digital signals to after the processing procedures such as the filtering of detected signal process, shaping, amplification through multi-channel analog digital to analog converter (A/D), be input to microcomputer then, each road signal is processed according to preset program in the microcomputer.For example, can calculate the data feature values of the working condition of rotation speed change, the ignition closed angle of engine reality and the isolating switch of lighting a fire according to program (as quick Fournier transform method) according to cycle, amplitude, the waveform character of electric current on ignition coil, the secondary coil, and compare, thereby obtain evaluation result to engine characteristics with the relevant reference point that is stored in the database at specific vehicle in advance.These reference points and coefficient of comparisons can be determined by statistics, also can determine by means of the data acquisition learning software, promptly at first the normal engine of a certain standard is carried out aforesaid data acquisition, the data of being gathered are handled according to the program of learning software, and reference point and the coefficient of comparisons as such engine is stored in the database then.Show, printing equipment then comes out final appraisal results by screen display and come out by printer prints.Compare with existing engine detector, the improvement of the utility model detector is, has increased an engine operating condition control device in detector again.This engine operating condition control device has a signal input part to link to each other with microcomputer according to the operating mode controlled condition that sets with respect to specific vehicle that presets in the data analysis treating apparatus, as when starting, make engine idle a period of time, under certain speed, keep certain hour then, increasing velocity successively afterwards, the data analysis treating apparatus is exported control signal continuously to the operating mode control device, movement executing mechanism action in these control signal excitation operating mode control device, and affact on the operating mode control assembly (as air throttle) on the engine through a cover junctor structure, the working conditions change of synchronous signal detection system monitoring engine also feeds back to the actual act value of power control unit in the microcomputer, to revise the size of being exported to the signal value in the operating mode control device by the data analysis treating apparatus.

Represented a kind of engine operating condition control actuating unit among Fig. 2.Wherein, control an operating mode that is supported on the body platform 3 by magnetic force bearing 2 from the signal of operating mode control system through umbilical cable 6 and controlling actuating unit 1, operating mode control actuating unit 1 is according to the operating mode driven by program accelerator pedal 4(gas pedal that presets), thus gas pedal reaches the purpose of control engine operating condition by the original bindiny mechanism control fuel system on the vehicle.It in the present embodiment air throttle of control carburetor.

Fig. 3 is the structural drawing of operating mode control executing mechanism 1 shown in Figure 2.Wherein, stepper motor 7 is by cable 6 controls, a screw rod 8 of fixedlying connected with motor 7 rotates with motor, drive is simultaneously moved with push-rod frame 9 along continuous straight runs of its threaded engagement, push-rod frame promotes under the guiding of slideway 11 that push rod 10 moves and drives gas pedals 4 motions through touch panel 12, thereby finishes engine operating condition control implementation.

Claims

1, a kind of intelligent engine detector, comprising signals collecting, arrangement, the standardization storage system, data analysis disposal system system, show, printing equipment and vehicle parameter database and test procedure database, it is characterized in that, in the data analysis disposal system, increased an engine operating condition control device, this control device comprises a stepper motor by cable control, the screw rod of fixedlying connected and can rotate thereupon with this motor, and but one cooperate with this screw flight and push-rod frame that along continuous straight runs moves, push-rod frame promotes under the guiding of slideway that a push rod moves and drives the motion of engine operating condition control element through a touch panel, thereby finishes engine operating condition control implementation.

2, engine detector as claimed in claim 1, it is characterized in that, described engine operating condition control device is to constitute by the control actuator of a magnetic force seat supports on vehicle body by one, the input end of control actuator links to each other with the described operating mode control output end on the data analysis disposal system, and the control actuator is operably connected with the engine operating condition control element through a connecting rod.

3, as claim 1,2 described engine detectors, it is characterized in that described engine operating condition control element is an accelerator pedal.

4, as claim 1,2 described engine detectors, it is characterized in that the fuel oil control gear that described engine operating condition control element is engine air throttle or fuel pump.