| 摘要 |
PURPOSE:To improve the feeling of acceleration by reducing NOx by interlocking the shift detecting mechanism of a change gear with mixed gas increasing mechanism and by stopping the action of the mixed gas increasing mechanism and by stopping the action of the mixed gas increasing mechanism at the time of change gear shifting during acceleration. CONSTITUTION:The air is gradually introduced into a diaphragm chamber 15 by the action of an orifice 13a when a steady running state is transferred to a decelerating state, permitting a throttle valve 8 to be slowly and entirely closed. Hereby, the discharge of HC is reduced. Moreover, a clutch detecting means 19a is turned on when the change gear (drawing omitted) is shifted for acceleration, so that a control valve 14 cutts off a negative pressure passage 14b to cause the air to be introduced into the diaphragm chamber 15 and the throttle valve 8 to be abruptly and entirely opened. Moreover, this causes a pump guide 22, a pump chamber 25 and a pump nozzle 30 to be actuated via a throttle 1 to permit the amount of fuel to increase. Hereby, it is possible to increase the feeling and to reduce NOx. |
