公开(公告)号：US20140236458A1

公开(公告)日：2014-08-21

申请号：US13770629

申请日：2013-02-19

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： YICHAO GUO ,  KENNETH M. SIMPSON ,  JAMES W. JEFFERS

IPC: F02D41/04

CPC classification number: F02N11/0829 ,  F02D41/0032 ,  F02M25/0809 ,  Y02T10/48

Abstract: A method of operating an engine in a vehicle equipped with an evaporative emissions system is described. The engine is configured to perform automatically an engine stop and an engine restart when the vehicle stops moving to increase fuel economy of the vehicle. The method includes the steps of determining if an engine stop is allowed while a diagnostic test of the of the evaporative emissions system is being performed if an engine stop is requested, and preventing the engine stop if the engine stop is not allowed.

Abstract translation: 描述了在配备有蒸发排放系统的车辆中操作发动机的方法。 发动机被配置为当车辆停止移动时自动执行发动机停止和发动机重起以增加车辆的燃料经济性。 该方法包括以下步骤：如果要求发动机停止，则在执行蒸发排放系统的诊断测试时确定是否允许发动机停止，并且如果不允许发动机停止则防止发动机停止。

公开(公告)号：US20140277927A1

公开(公告)日：2014-09-18

申请号：US13803954

申请日：2013-03-14

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： YICHAO GUO ,  KENNETH M. SIMPSON ,  JAMES W. JEFFERS

IPC: F02M25/08

CPC classification number: F02M25/0818

Abstract: A method for monitoring an evaporative emissions control (EVAP) system that includes compensating a diagnostic leakage test based on a fuel consumption amount during a test interval is disclosed. The method includes establishing a leak test pressure in the EVAP system, operating the operating the associated valves and pumps such that the EVAP system is expected to be isolated, determining an actual pressure change of the EVAP system, determining an expected pressure change of the EVAP system based on vehicle operating conditions that include the fuel consumption amount, and indicating that a leak is detected if the actual pressure change differs from the expected pressure change by more than a difference threshold.

Abstract translation: 公开了一种用于监测蒸发排放控制（EVAP）系统的方法，其包括在测试间隔期间基于燃料消耗量补偿诊断泄漏测试。 该方法包括在EVAP系统中建立泄漏测试压力，操作相关联的阀和泵的操作，使得EVAP系统预期被隔离，确定EVAP系统的实际压力变化，确定EVAP的预期压力变化 系统，其基于包括燃料消耗量的车辆操作条件，并且指示如果实际压力变化与预期压力变化不同差异阈值，则检测到泄漏。

公开(公告)号：US20140196526A1

公开(公告)日：2014-07-17

申请号：US13740517

申请日：2013-01-14

Applicant: DELPHI TECHNOLOGIES, INC.

Inventor： KENNETH M. SIMPSON ,  PAULO F.R. TRANQUILLI

IPC: G01M15/00

CPC classification number: G01F25/0061 ,  F02D19/027 ,  F02D19/0623 ,  F02D19/088 ,  F02D41/0025 ,  F02D2200/0611 ,  G01F23/0076 ,  Y02T10/32 ,  Y02T10/36

Abstract: A method for diagnosing the performance of a refueling event detection system for a vehicle is provided. The method includes the steps of a) determining a fuel change amount based on a difference of an indicated fuel amount and a previously indicated fuel amount, b) determining a consumed amount of fuel consumed by the engine since a prior refueling event was detected, and c) diagnosing the performance of the refueling event detection system based on the consumed amount and the fuel change amount.

Abstract translation: 提供一种用于诊断车辆加油事件检测系统的性能的方法。 该方法包括以下步骤：a）基于所指示的燃料量和先前指示的燃料量的差异来确定燃料变化量，b）确定检测到先前的加油事件之后由发动机消耗的燃料的消耗量，以及 c）基于消耗量和燃料变化量来诊断加油事件检测系统的性能。