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Engine Test for Accelerated Fuel Deposit Formation on Injectors Used in Gasoline Direct Injection Engines
Technical Paper
2009-01-1495
ISSN: 0148-7191, e-ISSN: 2688-3627
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English
Abstract
An accelerated fuel injector deposit formation test was developed to understand fuel deposit formation on fuel injectors for Gasoline Direct injection engines. As part of the test development, both a side mount and a central mount Gasoline Direct injection style 4 cylinder engines were operated in homogeneous mode. Initial attempts to form plugging deposits by running the engine continuously resulted in significant deposits forming on the exterior surface of the Gasoline Direct injection fuel injector tip; however, these deposits did not impact fuel flow.
Ultimately, Gasoline Direct injection injector plugging was successfully accomplished using a test similar to the Port Fuel Injector test cycle presented in SAE 2005-01-3841 (1), “Development of a Robust Injector Design for Superior Deposit Resistance”. Test cycles included run time to reach operating temperature followed by engine soak and cool-down. Engine soak and injector tip temperatures were determined to be the most important factors contributing to injector plugging.
This engine test, used in conjunction with Delphi's gasoline deposit-forming fuel, resulted in an accelerated, repeatable test that formed fuel deposits resulting in fuel injector lean flow shift. Fuel deposit location and chemistry replicated deposits found on fuel injectors operated in the real world.
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Citation
Von Bacho, P., Sofianek, J., Galante-Fox, J., and McMahon, C., "Engine Test for Accelerated Fuel Deposit Formation on Injectors Used in Gasoline Direct Injection Engines," SAE Technical Paper 2009-01-1495, 2009, https://doi.org/10.4271/2009-01-1495.Also In
SI Combustion and Direct Injection SI Engine Technology, 2009
Number: SP-2241; Published: 2009-04-20
Number: SP-2241; Published: 2009-04-20
References
- Von Bacho Paul S. Galante-Fox Julie Sant David W. “Development of a Robust Injector Design for Superior Deposit Resistance,” SAE Paper No. 2005-01-3841
- Zhao F-Q. Lai M-C Harrington D.L. “A Review of Mixture Preparation and Combustion Control Strategies for Spark-Ignited Direct Injection Gasoline Engines,” SAE Technical Paper 970627 1997
- CEC, OACIS, CRC “Report on the Work of the CEC/CRC/OACIS Task Force on the Development of a Test Method to Evaluate Fuel Quality with respect to Injector Fouling in Direct Injection Gasoline Engines,” 3 April 2007
- Zhao Fuquan Harrington David L. Lai Ming-Chia “Automotive Gasoline Direct-Injection Engines,” SAE Book No. R-289
- Kinoshita Masao Saito Akinori Matsushita Souichi Shibata Hitoshi Niwa Yuyaka “A Method for Suppressing Formation of Deposits on Fuel Injector for Direct Injection Gasoline Engines,” SAE Paper No. 1999-01-3656
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