Aiming at solving the existed problems,the non-disassembly diagnosis system of diesel engine fuel injection system,which based on virtual instrument is put forward.

• 燃油喷射系统是柴油机的核心系统,也是柴油机的主要故障源,燃油喷射系统相当部分的故障必须拆解判断,容易出错并且复杂。