首页>
外国专利>
METHOD AND APPARATUS FOR SUPPORTING STOP-AND-GO ENGINE FUNCTIONALITY
METHOD AND APPARATUS FOR SUPPORTING STOP-AND-GO ENGINE FUNCTIONALITY
展开▼
机译:支持走走走走引擎功能的方法和装置
展开▼
页面导航
摘要
著录项
相似文献
摘要
A vehicle includes a direct-start engine and a fuel rail with a threshold fuel pressure, a transmission having a threshold fluid pressure, and a fuel delivery system. The system has a controller, a motor having a shaft, and an integrated pump assembly including a high-pressure (HP) fuel pump and a low-pressure (LP) fluid pump each connected to the shaft. Threshold pressures are maintained during the predetermined engine state, which includes an engine idling and an engine cranking state. A method for providing stop-and-go functionality in a vehicle having a direct-start engine includes detecting a current engine state, rotating a motor shaft to energize a secondary HP fuel pump at a first threshold pressure during engine cranking, and rotating the shaft to energize an LP fluid pump at a second threshold pressure during engine idling and engine cranking. The secondary pumps can also be used when primary pumps are temporarily inoperable.
展开▼