| 摘要 |
PURPOSE:To always both ensure maximum torque of an engine and improve its fuel consumption rate, by arranging an exhaust control valve to the collective part of an exhaust manifold and opening said valve to the degree of its opening correspondingly almost to the opening of a throttle valve. CONSTITUTION:When an engine is started, generated negative pressure, in the downstream of each control valve 21-23 in intake pipes 11-13, is effected to a pressure chamber 13 in a negative pressure actuator 10 through a selector valve 14, to lift a rod 11. In consequence, the control valve 21 is opened to a certain degree through an operating lever 31 to feed a mixture only to a cylinder 201. Then an accelerator pedal is depressed, if a wire 18 is pulled, a throttle valve 5 is opened through a lever 16, simultaneously the control valve 21 is further opened through a link rod 6. Depression of the pedal is increased, if branch rods 62, 53 of the link rod 6 reach upper limits of long holes 42, 43 of operating levers 32, 33, the control valves 22, 23 are opened, and the mixture can be fed also to cylinders 202, 203. |
