DIESEL ENGINE AND METHOD OF CONTROLLING SAME

摘要

An exhaust gas recirculation controller that, closes an exhaust gas recirculation valve to stop exhaust gas recirculation, when an engine is accelerating, and when an increased amount of a fuel injection amount detected by a fuel injection detector is larger than a preset first threshold value, a boost pressure detected by a boost pressure detector is lower than a preset second threshold value, and an engine operation state detected by an engine operation state detector is outside a preset high rotation and high load operation state region. An exhaust gas amount flowing into a turbocharger can be confined within a proper range when accelerating a diesel engine, which avoids a rotational speed of the turbocharger from exceeding an allowable rotational speed.

主权项

1. A diesel engine, comprising:
a fuel injection amount detector; a boost pressure detector; an engine operation state detector; and an exhaustion gas recirculation controller, wherein the exhaustion gas recirculation controller closes an exhaustion gas recirculation valve to stop EGR, when the engine is accelerating, and when an increased amount of a fuel injection amount detected by the fuel injection detector is larger than a preset first threshold value, a boost pressure detected by the boost pressure detector is lower than a preset second threshold value, and an engine operation state detected by the engine operation state detector is outside a preset high rotation and high load operation state region.