Fuel injection quantity calibration method and system of electric-controlled fueling injection equipment of diesel engine
An electronically controlled fuel injection and fuel injection volume technology, which is applied in the direction of charging system, fuel injection device, measuring device, etc., can solve the problems of difficult computer management, low accuracy and low efficiency of measurement and calibration data, and achieve high fuel injection efficiency. The effect of volume uniformity, normal discharge and stable work
Inactive Publication Date: 2008-12-03
姜禾
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Problems solved by technology
At present, the traditional mechanical fuel injection system widely used in China is measured by glass tubes on the test bench of the oil pump, and the average cycle fuel injection volume is calibrated for multiple times, and then the consistency of the fuel injection volume of each cylinder is adjusted by manpower. The accuracy is low and the efficiency is low. Low, measurement calibration data is difficult to implement effective computer management
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[0027] Such as figure 1 The fuel injection volume calibration system of the electronically controlled fuel injection device shown is composed of a fuel injection pump test bench 1, a digital fuel injection flow meter 5, a database management system 6, a laser marking machine 7 and a laser scanner 8. The fuel injection pump test bench 1 is equipped with an electronically controlled fuel injection device 3 to be tested and a control computer 2 for controlling the electronically controlled fuel injection device.
[0028] figure 1 Shown is the flow chart of the fuel injection characteristic test of the electronically controlled unit pump. The following is a detailed description of the fuel injection characteristic test process of the electronically controlled unit pump. The fuel injection characteristic test procedure is the same, however, for the fuel injection characteristic test of other electronically controlled fuel injection devices except the electronically controlled unit...
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A method for scaling the oil injection amount used for an electronic-control injection device of a diesel engine comprises the following steps: (1) controlling the injection start time and the duration time according to injection timing signal and injection pulse-width signal under each set operation condition; (2) reading the oil injection amount of the electronic-control injection device, and inputting the injection characteristics into a database under each set operation condition; (3) laser-etching two-dimensional codes on the metal surface of the electronic-control injection device according to the injection characteristics in the database to mark the injection characteristics; and (4) scanning the two-dimensional codes and inputting the injection characteristics of the electronic-control injection device into an electronic control unit matched with the engine. The corresponding device comprises an injection pump test bed, a control computer, a digital oil injection flowmeter, a database management system, a laser marker, and a laser scanner. The oil injection amount scaling method can improve the assembly quality of the diesel engine, effectively lower the maintenance cost of the diesel engine and improve the oil injection amount uniformity of the oil injection pump, thus achieving stable operation and normal emission of the engine.
Description
technical field [0001] The invention relates to a method and system for calibrating the fuel injection quantity of an electronically controlled fuel injection device, in particular to a method and system for calibrating the fuel injection quantity of an electronically controlled fuel injection device suitable for an electronically controlled diesel engine. Background technique [0002] With the implementation of the National No. 3 emission regulations, diesel engines using electronically controlled fuel injection systems have become an inevitable trend. The fuel injection consistency of each cylinder of the diesel electronic injection system is the most important product quality index to ensure the emission and power performance of the electronically controlled engine. At present, the traditional mechanical fuel injection system widely used in China is measured by glass tubes on the test bench of the oil pump, and the average cycle fuel injection volume is calibrated for mul...
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IPC IPC(8): F02M65/00
Inventor 姜禾
Owner 姜禾