The introduction of IQA code - F-DIESEL FUEL INJECTION ELECTRONIC SYSTEM

The introduction of IQA code

F-DIESEL FIE SYSTEM 20/10/2020 3:28:58 am

[Key Words] IQA code 0445120354

1. what is IQA code ?

IQA code is the code to adjust the unit injector’s fuel injection quantity in common rail system to avoid the deviation when different injectors are installed on system because there are differences on every injectors.

IQA Codes are entered into the ECM to improve control of the injected fuel quantity. The code applies over the entire programmed fuel map. The classification codes compensate for deviations in metered amounts, and make fuel quantity metering more precise. The adjustment codes also increase injector efficiency on the engine and improve emissions.

2. What is the code difference of different system？

Brand	Bosch	Denso	Delphi	Cummins
Code type	IQA code	QR code	C2I code	IQA code
Constitution	7 - digit capital letters and Numbers	8 digit and 30 digit	8 digit , 16 digit and 20 digit	7 digit , 9 digit and 30 digit
Location	solenoid valve	injector body & solenoid valve	injector body	solenoid valve
Must read-in or not	truck yes , vehicle no	X1,G2,G3 yes	yes	no
Noted	no J , Q and 0 in the code	need record QR code before installation	3301D is 16 digit , 5310D is 20 digit	no I,O,S,Z

Bosch vehicle injector IQA code Denso injector QR code

Delphi injector C2I code Cummins injector IQA code

3. How to work of IQA code?

In the figure below, Qmv (ET) is the standard injector injection curve, and Qcri (ET) is the actual injector injection curve.In the same charging time, it can be seen that there is a deviation between the actual injection volume and the standard injection volume.In order to make the actual amount of fuel injection quantity and standard injection are equal, the deviation of zero, and it could reduce charging time, which is the actual charging time and standard charging time there is a deviation, through achieving or decrease with the increase of the electric time injector fuel injection quantity and standard values are equal, this is the working principle of injection correction code.

4. When need read-in IQA code ?

First condition, you need read in new IQA code when you change new injector; Second condition , you need read in new IQA code when you change new ECU .

5. Here is our newly developed Bosch injector with IQA code : 0445120354

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