| 摘要 |
In a mechanically governed fuel-injected internal combustion engine (most probably a diesel engine), to vary the amount of EGR (exhaust gas recirculation) flow at different throttle positions, an air throttle valve (28) is located in the engine air inlet (12). The valve position is related to the setting of the injection pump (22) through a mechanical linkage and in a non linear manner, and another valve (18) controlling the flow in the recirculation passage (16) is moved in an opening or closing direction as a result of signals representing the pressure drop across the throttle valve. |
