This paper describes the control and communication network in fuel cell vehicles, including both the protocol and the hardware. Based on the current protocol (ISO-11898 and SAE J1939), a new practical protocol is prop...This paper describes the control and communication network in fuel cell vehicles, including both the protocol and the hardware. Based on the current protocol (ISO-11898 and SAE J1939), a new practical protocol is proposed and implemented for the control and communication network in fuel cell vehicles. To improve the re-liability of data communication and to unify the network management, a new network system based on dual-port RAM is also implemented.展开更多
试验研究了 L PG/汽油两用燃料汽车的噪声特性 ,测量了车内和发动机舱的噪声水平 ,对比分析了匀速和加速时燃用汽油和 L PG的噪声特性。试验结果表明 ,两用燃料汽车燃用 L PG时 ,在中高频率段噪声水平高于燃用汽油燃料 ;加速过程中 ,在...试验研究了 L PG/汽油两用燃料汽车的噪声特性 ,测量了车内和发动机舱的噪声水平 ,对比分析了匀速和加速时燃用汽油和 L PG的噪声特性。试验结果表明 ,两用燃料汽车燃用 L PG时 ,在中高频率段噪声水平高于燃用汽油燃料 ;加速过程中 ,在较低转速燃用汽油噪声较大 ,在较高转速燃用 L PG噪声较大。展开更多
基金Supported by the National High-Tech Research and Devel-opment (863) Program of China (No. 2001AA501100)
文摘This paper describes the control and communication network in fuel cell vehicles, including both the protocol and the hardware. Based on the current protocol (ISO-11898 and SAE J1939), a new practical protocol is proposed and implemented for the control and communication network in fuel cell vehicles. To improve the re-liability of data communication and to unify the network management, a new network system based on dual-port RAM is also implemented.
文摘试验研究了 L PG/汽油两用燃料汽车的噪声特性 ,测量了车内和发动机舱的噪声水平 ,对比分析了匀速和加速时燃用汽油和 L PG的噪声特性。试验结果表明 ,两用燃料汽车燃用 L PG时 ,在中高频率段噪声水平高于燃用汽油燃料 ;加速过程中 ,在较低转速燃用汽油噪声较大 ,在较高转速燃用 L PG噪声较大。