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1. 发明申请

WO2016089285A1 A METHOD FOR CONTROLLING A WASTE HEAT RECOVERY SYSTEM AND A WASTE HEAT RECOVERY SYSTEM 审中-公开
标题翻译：一种用于控制废热回收系统和废热回收系统的方法
公开(公告)号：WO2016089285A1
公开(公告)日：2016-06-09
申请号：PCT/SE2015/051263
申请日：2015-11-25
申请人： SCANIA CV AB
发明人： DELLRUD, Jan , CHABO, Alexander , TYSK, Peter , FLEMMER, Henrik
IPC分类号： F02G5/02 , F01N5/02 , F01N9/00
CPC分类号： F02G5/02 , Y02T10/166
摘要： A waste heat recovery (WHR) system for use in a drive system and a method for controlling such a system. The system includes a heat exchanger (3), an exhaust channel (4) for carrying exhaust gas from a combustion engine (1) through the heat exchanger, a bypass channel (5) connected to the exhaust channel and bypassing the heat exchanger, an adjustable valve (6) for adjusting the mass flow of exhaust gas through each of the exhaust channel and the bypass channel, and a coolant channel (7) for carrying a coolant fluid through the heat exchanger. The method comprises the steps of determining a current value of a mass flow MF CF1 of coolant flu id through the heat exchanger, an entrance temperature T EG1 of the exhaust gas before entry into the heat exchanger, and an entrance temperature T CF1 of the coolant fluid before entry into the heat exchanger. A setpoint S 1 for a mass flow MF EG1 of exhaust gas through the heat exchanger at which a net power gain P net of the drive system is maximized is determined using said determined values. A current value of the mass flow MF EG1 of exhaust gas through the heat exchanger is determined and the adjustable valve is controlled so that the mass flow M F EG1 is adjusted toward the determined setpoint S 1 .
摘要翻译：用于驱动系统的废热回收（WHR）系统和用于控制这种系统的方法。该系统包括热交换器（3），用于通过热交换器承载来自内燃机（1）的废气的排气通道（4），连接到排气通道并绕过热交换器的旁通通道（5）可调节阀（6），用于调节通过每个排气通道和旁通通道的废气的质量流量，以及用于承载冷却剂流体通过热交换器的冷却剂通道（7）。该方法包括以下步骤：确定通过热交换器的冷却剂流体id的质量流量MFCF1的当前值，进入热交换器之前的废气的入口温度TEG1以及入口之前的冷却剂流体的入口温度TCF1 进入热交换器。使用所述确定的值确定通过热交换器的排气的质量流量MFEG1的设定值S1，其中驱动系统的净功率增益Pnet最大化。确定通过热交换器的排气的质量流量MFEG1的当前值，并且控制可调节阀，使得质量流量M FEG1朝着确定的设定点S1调整。

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