| 摘要 |
PURPOSE:To permit good air-conditioning in car-interior without generating the continuous intermission of a magnet clutch by turning-OFF the magnet for a certain time by the first acceleration signal after the acceleration completion signal is generated. CONSTITUTION:When the negative pressure in a manifold reaches at least the level for generating the acceleration completion signal, said negative pressure is detected by a negative-pressure switch 13, and an acceleration completion signal is generated, and said signal is held by a latch part 15 and output as the input for one of an AND part 16. If the manifold negative pressure becomes over the acceleration signal generating level, said negative-pressure is detected by a negative-presure switch 11 and an acceleration signal is generated and input into the other input terminal of the AND part 16. Signals are output during a set time T from a timer part 9, according to said input signal, and during this time, a relay 8 is not brought into conduction state, and a magnet clutch 4 is continually set into the cut-off state. Therefore, the continuous intermission of the magnet clutch 4 is prevented, and since after the lapse of a certain time, an air conditioner operates, good air conditioning is permitted. |
