| 摘要 |
<p>PURPOSE:To suppress the generation of the uncombustible HC and particulates and prevent the increase of supercharge pressure over the allowable max. value by the simple device constitution having high reliability, as for a supercharge pressure controller for a Diesel engine equipped with an exhaust turbine supercharger. CONSTITUTION:An all-time closed type bypass control valve 12 is arranged in a bypass passage 10 which makes a detour around an exhaust turbine. The actuator 14 of the control valve 12 is equipped with a supercharge pressure chamber 20 and an atmospheric pressure chamber 22 which are dividedly formed by a diaphragm 18. The supercharge pressure chamber 20 is connected to an intake passage on the downstream side of a compressor through a supercharge pressure introducing passage 36, and when the supercharge pressure increases over a certain supercharge pressure, the control valve 12 is opened through a link mechanism 30. An accelerator interlocked rod 40 is connected with an accelerator pedal 46 through an accelerator link 44, and when the stepping-ON quantity of the accelerator pedal 46 is leas than a certain stepping-ON quantity, the second rod 26 is pushed rightward by the accelerator interlocked rod 40, and the control valve 12 is opened.</p> |
