Model-Based Fault Diagnosis of Spark-Ignition Direct-Injection Engine Using Nonlinear Estimations

2005-01-0071

04/11/2005

Event
SAE 2005 World Congress & Exhibition
Authors Abstract
Content
In this paper, the detection and isolation of actuator faults (both measured and commanded) occurring in the engine breathing and the fueling systems of a spark-ignition direct-injection (SIDI) engine are described. The breathing system in an SIDI engine usually consists of a fresh air induction path via an electronically controlled throttle (ECT) and an exhaust gas recirculation (EGR) path via an EGR valve. They are dynamically coupled through the intake manifold to form a gas mixture, which eventually enters the engine cylinders for a subsequent combustion process. Meanwhile, the fueling system is equipped with a high-pressure common-rail injection for a precise control of the fuel quantity directly injected into the engine cylinders. Since the coupled system is highly nonlinear in nature, the fault diagnosis will be performed by generating residuals based on multiple nonlinear observers. Performing the fault detection and isolation properly on these key actuators in an SIDI engine could in principle ensure a precise control of air/fuel ratio and EGR dilution for improving fuel economy and reducing engine-out exhaust emissions.
Meta TagsDetails
DOI
https://doi.org/10.4271/2005-01-0071
Pages
13
Citation
Lee, B., Guezennec, Y., and Rizzoni, G., "Model-Based Fault Diagnosis of Spark-Ignition Direct-Injection Engine Using Nonlinear Estimations," SAE Technical Paper 2005-01-0071, 2005, https://doi.org/10.4271/2005-01-0071.
Additional Details
Publisher
Published
Apr 11, 2005
Product Code
2005-01-0071
Content Type
Technical Paper
Language
English