Variable Displacement Device

The present invention discloses a variable displacement device. A vehicle cooling system may include a variable displacement compressor, and a controller configured to, in response to a determination that the compressor is operating within a gurgling zone that is defined by a predefined range of compressor speeds and currents, generate a current signal defining a displacement for the compressor based on a speed of the compressor and an ambient temperature to control the displacement to reduce refrigerant flow noise. 公开种可变排量装置。车辆冷却系统可包括可变排量压缩机；控制器，被配置为响应于确定压缩机在由预定义范围的压缩机转速和压缩机电流限定的发出冒泡声的区域内操作，基于压缩机转速和环境温度产生限定压缩机排量的电流信号来控制压缩机排量，以降低制冷剂流动噪音。