To debug automatic mechanical transmission（AMT） more quickly and accurately,an AMT-fault-diagnosis device is designed based on the ISO 15765 protocol,which adopts the flow control mechanism and has off-line diagnost...To debug automatic mechanical transmission（AMT） more quickly and accurately,an AMT-fault-diagnosis device is designed based on the ISO 15765 protocol,which adopts the flow control mechanism and has off-line diagnostics function.Requirements for the device are analyzed and diagnostic trouble code（DTC） is defined.Electrically controlled hardware with graphics display function and fault diagnostic software flowchart are designed based on the electronic control hydraulic AMT system.Bench and vehicle driving tests showethat the AMT-fault-diagnosis device can read and delete the fault message successfully with a stable performance.展开更多
基金Sponsored by the National High Technology Research and Development Program of China("863"Program)(2006AA110115)
文摘To debug automatic mechanical transmission（AMT） more quickly and accurately,an AMT-fault-diagnosis device is designed based on the ISO 15765 protocol,which adopts the flow control mechanism and has off-line diagnostics function.Requirements for the device are analyzed and diagnostic trouble code（DTC） is defined.Electrically controlled hardware with graphics display function and fault diagnostic software flowchart are designed based on the electronic control hydraulic AMT system.Bench and vehicle driving tests showethat the AMT-fault-diagnosis device can read and delete the fault message successfully with a stable performance.
文摘国标GB 15740要求车辆必须具备发动机防盗(IMMO)功能.发动机防盗系统牵涉整车安全,为了避免诊断服务和其他控制器通用从而破解发动机防盗系统,以及为了调试发动机防盗系统故障位置和原因更快、定位更精确,开展了基于CAN总线的ISO 15765协议的发动机防盗诊断服务协议的研究开发. ISO 15765采用流控制机制和下线故障诊断功能,在分析可能出现故障信息后,制定了故障诊断代码(DTC)并设计了发动机防盗诊断模块软件编程的流程图.利用CANoe对发动机防盗系统中的信息进行读取与删除,结果符合预期目标,证明此项技术具有很高的可靠性,定位很精确,能满足实际使用要求.
