This is a single digit code and for example, a 2008 Ford Mondeo could have injectors fitted that are class 6 or class 5. And some Bosch and some Siemens/VDO injectors use a single code identification process for injectors called injector classification. Some earlier common rail injectors have no coding. New injectors to be coded to the engine control unit. Fitment of replacement injectors will require the This data code allows the engine control module to correct the pulse duration applied to each individual injector to maintain optimum performance. The data code is programmed into the engine control unit identifying to which cylinder the injector is fitted. To as the C2i code, IMA/IQA code or QR code depending on manufacturer. Slight difference between target flow and actual flow can occur due to high operating pressures.Ĭertain common rail diesel fuel injectors require calibration during manufacture or overhaul on a specialised diesel injection test rig to produce a data code relating to the characteristics of each individual injector. The fuel injectors are machined to very fine tolerances but because of individual characteristics such as friction, pressure drop, magnetic force, wear during service etc, very slight variations in flow can occur. StringStream := TStringStream(hello, amount of fuel injected is proportional to the injector duration (opening time), fuel rail pressure, fuel temperature and fluidĪ target value for injector duration under specific conditions is programmed into the control unit (ECU) engine control map. TStringStream and TStringList can use encoding for I/O operations The same is for cases when you get text via pointer and lengthĮxpectedLength := DLLCallToGetDataLength()

In case you need to send text via pointer and length using specific encoding (used mostly for DLL calls)ĭataout := ('ISO-8859-2').GetBytes(hello) //Conversion to ISO 8859-2ĭLLCall(addr(dataout),length(dataout)) Response := (datain) //Convertsion from UTF8 procedure EncodingExample ĭataout := (hello) //Conversion to UTF8ĭatain := SomeIOFunction(dataout) //This function expects input as TBytes in UTF8 and returns output as UTF8 encoded TBytes. One way how to deal with encodings is to use only string type in your application and use TEncoding every time you need to use specific encoding - typically in I/O operations, DLL calls, etc. The class Sysutils.TEncoding also provides many predefined encodings as class properties. The class Sysutils.TEncoding provides method GetBytes for converting string to TBytes (array of bytes) and GetString for converting TBytes to string. Type string is designed to be encoding independent - you should never use its internal representation. Assigning one type of string into another may result in a conversion. String types like UnicodeString, AnsiString, WideString and UTF8String are stored in a memory using their respective encoding (see String Types for more details).

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