Disclosed is a filter degradation estimation device for a vehicle air conditioner, which is provided with intake air temperature detection units (32, 34), an evaporator temperature detection unit (36), temperature change rate calculation units (40, S110-S130), standard change rate calculation units (40, S140), and degradation degree calculation units (40, S150). The temperature change rate calculation unit calculates the change rate per unit time of the temperature of the evaporator (20) detected by the evaporator temperature detection unit when the compressor (22) is operated. The standard change rate calculation unit calculates a standard change rate on the basis of the air temperature detected by the intake air temperature detection unit and operation command values for a blower (16) and a compressor in the air conditioner. The degree of degradation calculation unit calculates the degree of degradation of the filter on the basis of the temperature change rate calculated by the temperature change rate calculation unit and the standard change rate calculated by the standard change rate calculation unit.
公开了一种用于车用空调的过滤器劣化估计装置,其包括进气温度检测部(32、34)、蒸发器温度检测部(36)、温度变化率计算部(40、S110‑S130)、标准变化率计算部(40、S140)和劣化程度计算部(40、S150)。温度变化率计算部计算当操作压缩机(22)时由蒸发器温度检测部检测到的蒸发器(20)的温度的每单位时间的变化率。标准变化率计算部基于由进气温度检测部检测到的空气温度以及空调中的鼓风机(16)和压缩机的操作命令值来计算标准变化率。劣化程度计算部基于由温度变化率计算部计算的温度变化率和由标准变化率计算部计算的标准变化率来计算过滤器的劣化程度。
Filter degradation estimation device for vehicular air conditioner
用于车用空调的过滤器劣化估计装置
2020-10-20
Patent
Electronic Resource
Chinese
IPC: | B60H ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES , Anordnung oder Einbau der Heizung, Kühlung, Lüftung oder anderer Luftbehandlungsvorrichtungen für die Fahrzeugräume für Reisende oder Fracht |
FILTER-DEGRADATION ESTIMATING DEVICE FOR VEHICULAR AIR CONDITIONER
European Patent Office | 2020
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