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：US20140190246A1

公开(公告)日：2014-07-10

申请号：US13733981

申请日：2013-01-04

Applicant: DELPHI TECHNOLOGIES, INC.

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

IPC: G01F22/00

CPC classification number: G01F22/00 ,  G01F23/363 ,  G01F25/0061 ,  G01F25/0084

Abstract: A method for diagnosing a component failure in a saddle-type fuel tank assembly is provided. The method includes a) updating a maximum amount to a subsequent amount of fuel if the subsequent amount of fuel is greater than the maximum amount, b) updating a minimum amount to the subsequent amount of fuel if the subsequent amount of fuel is less than the minimum amount, c) determining a fuel consumption amount, and d) determining that one or more of a first fuel level sender and a second fuel level sender have failed if the difference between the maximum amount and minimum amount is less than a first threshold, and the fuel consumption amount is greater than a second threshold.

Abstract translation: 提供了一种用于诊断鞍型燃料箱组件中的部件故障的方法。 该方法包括：a）如果随后的燃料量大于最大量，则将最大量更新为随后的燃料量; b）如果随后的燃料量小于最大量，则将最小量更新为随后的燃料量 最小量，c）确定燃料消耗量，以及d）如果所述最大量和最小量之间的差小于第一阈值，则确定第一燃料液位传感器和第二燃料液位传感器中的一个或多个已经失效， 并且燃料消耗量大于第二阈值。