Diagnosis and Prognosis of Fuel Injectors based on Control Adaptation



Published Oct 2, 2017
Azeem Sarwar Chaitanya Sankavaram Xiangxing Lu


Spark Ignition Direct Injection (SIDI) technology enables better fuel economy and tail pipe emissions in vehicles equipped with gasoline engines. The SIDI technology depends on the ability of the system to deliver fuel at high pressure directly into the combustion chamber, hence making the
fuel injectors key subcomponents. Reliable performance of fuel injectors is vital as it directly relates to the operability of the vehicle, and hence customer satisfaction in case of failure. It, therefore, becomes very important to devise a scheme that can effectively diagnose and prognose such a component. In this article, algorithm development for diagnosis and a pathway to prognosis of fuel injectors is presented. We do not propose any additional sensing capability, and make use of what is available in most of the production vehicles today across the industry. In particular, the control adaptation of fuel control and the associated diagnostics that are mandated by regulators are employed to generate schemes for fault detection, fault isolation, and fault prediction. Results are presented from vehicle test data that allow development of such a scheme for fuel injectors.

How to Cite

Sarwar, A., Sankavaram, C., & Lu, X. (2017). Diagnosis and Prognosis of Fuel Injectors based on Control Adaptation. Annual Conference of the PHM Society, 9(1). https://doi.org/10.36001/phmconf.2017.v9i1.2469
Abstract 239 | PDF Downloads 979



prognostics, Fuel system, GDI, SIDI

C¸ elik, M. B., & Ozdalyan, B. (2010). Gasoline direct injection. In Fuel injection. InTech.
Ferguson, C. R., & Kirkpatrick, A. T. (2015). Internal combustion engines: applied thermosciences. John Wiley & Sons.
Lanigan, P. E., Kavulya, S., Narasimhan, P., Fuhrman, T. E., & Salman, M. A. (2011). Diagnosis in automotive systems: A survey. Parallel Data Laboratory Carnegie Mellon University, Pittsburgh, 11–110.
Merritt, H. E. (1967). Hydraulic control systems. JohnWiley & Sons.
Smith, J. D., & Sick, V. (2006). A multi-variable high-speed imaging study of ignition instabilities in a spray-guided direct-injected spark-ignition engine
(Tech. Rep.). SAE Technical Paper.
Takagi, Y. (1998). A new era in spark-ignition engines featuring high-pressure direct injection. In Symposium (international) on combustion (Vol. 27, pp. 2055–2068).
Zhao, F., Lai, M.-C., & Harrington, D. L. (1999). Automotive spark-ignited direct-injection gasoline engines. Progress in energy and combustion science, 25(5), 437–562.
Technical Research Papers