新鲜空气是车辆舒适的主要标志之一。因此,为卧车研制了一种强迫通风装置,并在卧车改造中予以装用。联邦德国60年代末制造的一批卧车,其基本方案是50年代初确定的。这批车装用联邦德国高速客车中普遍采用的温水采暖装置,该装置经运用考验,性能颇佳,且维修费用较低。但对于这批车辆的舒适要求并不象今天这样高。运行速度一般为120km/h,尚能允 Fresh air is one of the main symbols of vehicle comfort. Therefore, a forced ventilation system was developed for the sleeper car and was installed in the sleeper car modification. The basic plan of a batch of sleeper cars manufactured by the Federal Republic of Germany in the late 1960s was established in the early 1950s. The cars are powered by warm water heating units commonly used in the German high-speed buses, which are proven to perform well, perform well and have low maintenance costs. However, the comfort requirements for these vehicles are not as high as they are today. Operating speed is generally 120km / h, still able to allow