| 摘要 |
PURPOSE:To ensure the smooth acceleration of a car by detecting the sudden lowering of the negative pressure in a manifold in a car conditioner at a sudden acceleration and intermitting a cooling compressor temporarily via a delay switch. CONSTITUTION:When the negative pressure in a chamber A2 is high, a negative pressure lowering detection valve A is opened, and the negative pressure is introduced into a negative pressure delay switch C from a manifold M. When the negative pressure is changed suddenly, a high negative pressure stop valve B is delayed by a throttle valve 26 in opening, and connected to the chamber A2. When the negative pressure is suddenly changed by a fixed value or more in the negative pressure delay switch C, the detection valve A is closed, and as the atmospheric pressure is introduced from the throttle valve 26, the negative pressure is gradually lowered, and a contact S is delayed in closing. Thereby, the operation of a compressor is temporarily intermitted. Besides, the high negative pressure stop valve B is used to prevent the negative pressure lowering detection valve A from the high negative pressure caused by engine braking. |
