| 摘要 |
PURPOSE:To prevent the occurrence of overrichness at the time of reacceleration after deceleration, by improving a feeding method of pressure to the lock-off mechanism installed in a vaporizer, in case of device which feeds a secondary diaphragm chamber of the vaporizer with supercharging pressure flowing the supercharging. CONSTITUTION:This feeder bearing the above caption installs a supercharger 10 and a throttle valve 12 in a suction passage 8 in order from the upstream side, while a venturi 11, where gaseous fuel out of a secondary chamber 31 of a vaporizer 21 is fed via a fuel passage 41, is installed in this suction passage 8 lying between the spercharger 10 and the throttle valve 12. The vaporizer 21 is supplied with supercharging pressure to its second diaphragm chamber 36 by a pipe line 42, and provided with a lock-off mechanism A having a secondary valve 33 forcedly closed. In this case, a lock-off chamber 38 of the lock-off mechanism A is interconnected to the downstream of the throttle valve 12 by a first interconnecting passage 45, and to the supercharger 10 by a second interconnecting passage 46, respectively, and a selector valve 44 opening the second interconnecting passage 46 at the time of deceleration is installed in a branch part between both these interconnecting passages 45 and 46 side by side.
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