Catalyst state estimation apparatus and method, and non-transitory recording medium

The disclosure relates to a catalyst state estimation apparatus and method and a non-transitory recording medium. The catalyst state estimation apparatus includes a first sensor, a memory and a processor. The first sensor is configured to acquire information about a catalyst that removes a toxic substance in an exhaust gas, the first sensor being provided in a main passage into which the exhaust gas flows from an internal combustion engine. The memory is configured to previously store a catalyst state estimation model that includes at least one mathematical model. The processor is configured to estimate a removal performance of the catalyst by applying the information about the catalyst acquired by the first sensor to the catalyst state estimation model. 本公开涉及催化剂状态推定装置及方法、以及非瞬时性记录介质。催化剂状态推定装置包含第1传感器、存储器和处理器。所述第1传感器设置于供来自内燃机的排出气体流通的主流路，构成为取得对所述排出气体中的有害物质进行净化的催化剂的信息。所述存储器构成为预先存储包含至少一个数学模型的催化剂状态推定模型。所述处理器构成为通过将由所述第1传感器取得的所述催化剂的所述信息适用于所述催化剂状态推定模型，来推定所述催化剂的净化性能。