| 摘要 |
<p>PURPOSE:To prevent an engine from damaging, by making the specified period of allowable maximum supercharging pressure so as not to be reset at the time of reaccleration in such a supercharging state as being higher than the setting value, in case of a device which controls the specified period allowable maximum supercharging pressure to be higher than the specified setting value at acceleration. CONSTITUTION:In case of a device which controls a waste gate valve 8 with a solenoid valve 11 controlled by a control unit 15, and also controls a quantity of exhaust gas by passing a turbine 5b of an exhaust turbosupercharger 5 whereby controls supercharging pressure, when an accelerating detector 13 detects an accelerating run, valve opening pressure in the waste gate valve 8, namely maximum supercharging pressure is apparently compensated to a large value for the specified time long. At this time, integrating motion for the said specified period is started from the point when the supercharging pressure exceeds a certain setting value, while at the supercharging pressure of more than a threshold value, a timer controlling device continuing in integration all the time is installed in the control unit 15. With this constitution, the maximum supercharging pressure is made larger continuously for hours so that reliability in an engine is prevented from damaging.</p> |
