| 摘要 |
PURPOSE:To improve the acceleration performance and output performance by energizing a negative pressure sliding throttle valve in the closing direction through a damper spring thereby preventing the abrupt lifting of said valve and eliminating dilution of mixture gas. CONSTITUTION:Upon abrupt opening of a throttle valve lever 14 to accelerate quickly, a throttle shaft 13 will rotate to remove a stopper between a stopper pin 22 and said lever 14 thus to release the press down force against a negative pressure sliding throttle valve 4 thereby only the press down force due to energizing of a damper spring 20 is applied on said valve 4. Upon abrupt opening of said lever 14, said valve 4 will lift slowly to open the Venturi section slowly resulting in the improvement of acceleration performance and output performance. |
