Method and device for processing test data of in-cylinder working process
A technology for testing data and working process, applied in the field of vehicles, it can solve the problems of garbled data, unusable special software, and inability to process test data offline in the cylinder, so as to avoid repeated connections, improve reliability, and improve application efficiency.
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Embodiment 1
[0026] figure 1 The flow chart of Embodiment 1 of the processing method for the test data of the in-cylinder working process provided by the present invention. Such as figure 1 As shown, this embodiment includes:
[0027] Step 11; extract test data in text format.
[0028] After collecting the test data during the working process of the diesel engine cylinder through the combustion analyzer, use the special software of the combustion analyzer to open the test file in the combustion analyzer to obtain the test data collected by the combustion analyzer, and convert the test data into Text format and save. Take the combustion analyzer of AVL Company as an example, connect the computer equipped with Indicom software with the AVL combustion analyzer, and open the .xpa test file in the Indicom software. Use the new display window function of the software to open the test data such as cylinder pressure, oil pipe pressure and needle valve lift, export and save them in txt file for...
Embodiment 2
[0034] figure 2 The flow chart of Embodiment 2 of the processing method for the test data of the in-cylinder working process provided by the present invention. Such as figure 2 As shown, the calculation method of the average value of the cylinder pressure in step 12 can specifically be:
[0035] Step 12A: According to the cylinder pressure test data in text format and the average value filtering method, calculate the average value of the cylinder pressure during the working process in the cylinder.
[0036] After processing the cylinder pressure test data in the text format by means of a mean value filtering method, the mean value of the cylinder pressure is obtained. The mean filtering formula of the cylinder pressure test data is: (formula 1); wherein, n is the number of working cycles in the cylinder; X i is the cylinder pressure test data at the nth cycle; Y is the cylinder pressure after taking the average value.
Embodiment 3
[0038] image 3 The flow chart of Embodiment 3 of the processing method for the test data of the in-cylinder working process provided by the present invention. Such as image 3 As shown, in step 12, the calculation method of the working parameter in the cylinder-the average value of the oil pressure can be specifically:
[0039] Step 12B: According to the oil pressure test data in text format and the mean value filtering method, calculate the average value of the oil pressure in the working process of the cylinder.
[0040] After the oil pressure test data in the text format is processed by means of a mean value filtering method, the mean value of the oil pressure is obtained. See formula 1 for the specific calculation formula.
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