| 摘要 |
PURPOSE:To permit to cut the fuel upon deceleration under discriminating between the vacuum of idling or the like and the vacuum of deceleration surely by a method wherein a deceleration sensor and a computer are connected in the fuel cut upon the deceleration of a motor car fuelled by LPG. CONSTITUTION:The carburettor 3 is provided with a sensing part 34 immediately below a throttle valve 11 while a micro-computer 32 is connected with a revolving number detector 41 as the sensor of the deceleration. Upon the deceleration, the computer 32 operates and detects it and a vacuum switch 45 detects that the vacuum of the sensing part is lower than 100mm.Hg, thereby conducting the coil 31 of a vacuum switching valve 30, opening the vacuum port 36 and closing an air port 39. According to these operations, the vacuum acts on a vacuum chamber 20, opens a bleed port 24, atmopshere is communicated through an air bleed path 23, the diaphragm 16 of a LPG regulator 6 is inflated, the valve 17 shuts a primary chamber 7 and a low-speed fuel path 8 as well as a fuel path 18 are shut off. |
