| 摘要 |
PURPOSE:To make ignition ever so better in time of low speed, by additionally installing a mechanism releasing an operation stop of an air-fuel ratio compensation device in time of an engine speed being low, in this air-fuel ratio compensation device, in case of a device bearing the above caption, which is provided with the air-fuel ratio compensation device. CONSTITUTION:In time of usual operation, LPG fuel is sucked in from an LPG regulator 1 while main fuel from the LPG regulator 1 by dint of suction pressure via a main fuel passage 3 and a regulating flow screw 7, respectively. And, when a throttle valve 1 goes beyond the specified opening, a power valve 9 is opened via a link 10, causing a fuel quantity out of a sub-fuel passage 8 to be increased. On the other hand, in time of air-fuel ratio compensation, an auxiliary fuel injection valve 13 is set in motion by a computer 14 on the basis of each signal out of a suction pressure switch 16 and an oxygen sensor 15, and the said valve 13 is stopped on the basis of a signal out of a suction pressure switch 20. In this case, the said air-fuel ratio compensation device 22 is additionally provided with an engine speed detecting device 21, through which the said valve 13 is made so as to restart it by the computer 14 in time of low speed. |
