公开(公告)号：US20140200852A1

公开(公告)日：2014-07-17

申请号：US13741112

申请日：2013-01-14

Applicant: CUMMINS INC.

Inventor： Karthik KAPPAGANTHU ,  David Stroh

IPC: G01M15/11 ,  G06F17/10

CPC classification number: G01M15/11 ,  G06F17/10

Abstract: An engine cylinder misfire detection system is provided that detects changes in exhaust manifold pressure (EMP) fluctuations, compares the EMP fluctuations with diagnostic thresholds determined with other engine characteristic information obtained from engine sensor data, and determines whether a cylinder misfire has occurred. A method of monitoring and detecting EMP fluctuations in combination with one or more sensed engine characteristics is disclosed to determine an engine cylinder misfire in a cycle of an internal combustion engine having at least one cylinder. The actuation approaches of the present invention include one or more processes for a cylinder of an engine associated with a determination of various load variables including fresh air flow, engine type, engine data inputs, and analytical determinants.

Abstract translation: 提供了一种检测排气歧管压力（EMP）波动变化的发动机气缸失火检测系统，将EMP波动与根据从发动机传感器数据获得的其他发动机特性信息确定的诊断阈值进行比较，并确定是否发生气缸失火。 公开了一种监测和检测EMP波动的方法，结合一个或多个感测到的发动机特性来确定在具有至少一个气缸的内燃机的循环中的发动机气缸失火。 本发明的致动方法包括与确定包括新鲜空气流，发动机类型，发动机数据输入和分析决定因素在内的各种负载变量相关联的发动机气缸的一个或多个过程。