公开(公告)号：US20130281257A1

公开(公告)日：2013-10-24

申请号：US13916270

申请日：2013-06-12

Applicant: Ford Global Technologies, LLC

Inventor： William Paul Perkins ,  Scott James Thompson

IPC: B60W20/00 ,  B60W10/08 ,  B60W10/06

CPC classification number: B60W20/00 ,  B60K6/445 ,  B60W10/06 ,  B60W10/08 ,  B60W2710/0644 ,  B60W2710/081 ,  B60Y2300/525 ,  F02B2075/125 ,  F02D13/0219 ,  F02D13/0261 ,  F02D19/084 ,  F02D29/02 ,  F02D41/042 ,  F02D41/062 ,  F02D2041/001 ,  F02N11/0822 ,  Y02T10/18 ,  Y02T10/36 ,  Y02T10/48 ,  Y02T10/6239 ,  Y10S903/902 ,  Y10T477/23

Abstract: Methods and systems are provided for raising the speed of a hybrid electric vehicle operating in an electric-only mode. During conditions when the vehicle is driven only by an electric motor, vehicle speed may be raised by spinning the engine unfueled using power from a system battery, while adjusting valve operation to reduce engine pumping losses. In this way, vehicle speed may be raised more efficiently and without damaging rotating transmission components.