| 摘要 |
PURPOSE:To indicate abnormality accurately without increasing wiring and number of parts by indicating abnormality of action at a pressure indicator when abnormality is identified basing on data read out from a memory that stores normal condition by a controlling device. CONSTITUTION:In an air pressure regulating device of air spring used in front and rear wheels suspension system of a motor cycle, air chambers 14, 20 of front and rear wheels connected throgh valves 32, 34 are formed at the discharge port of an air pump 22 driven by an electric motor 24. A semiconductor pressure sensor 36 and an exhausting valve 38 are installed in the upper stream side of the valves 32, 34. A controlling unit 40 is provided with a pressure indicator 42 that indicates pressure detected by the sensor 36, a memory 44 that stores normal condition and a controlling device 46. The device 46 indicates abnormality of action in an indicator 42 when it judges abnormality of action basing on the data read out from the memory 44. |
