Fuel reforming estimation in HCCI engines

Details Fuel reforming estimation in HCCI engines Fuel reforming estimation in HCCI engines

2008-03-18

2008-03-18

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C123S003000, C123S568210

Reexamination Certificate

active

11538082

ABSTRACT:
An internal combustion engine employs exhaust gas recompression and fuel injection during the recompression as part of an overall homogeneous charge compression ignition control. In-cylinder fuel reformation is estimated using exhaust gas burned gas fractions determined from sensed exhaust gases and models. Models include air actually consumed in in-cylinder fuel combustion and reforming processes and air required to complete in-cylinder combustion reactions of reformed fuel. Reformed fuel is calculated based on the modeled and measured exhaust gas burned gas fractions.

REFERENCES:
patent: 7159541 (2007-01-01), Wakao et al.
patent: 2006/0196467 (2006-09-01), Kang
“Universal Air-Fuel Ratio Heated Exhaust Gas Oxygen Sensor and Further Applictions”, T. Yamada, N. Hayakawa, Y. Kami, and T. Kawai, SAE paper 920234.
“Interactions Between Exhaust Gas Composition and Oxygen Sensor Performance”, J.G. Buglass, T.D.B. Morgan, J.O. Graupner, SAE paper 922646.
“Intake Oxygen Concentration Estimation for DI Diesel Engines”, Diop, S.; Moraal, P.E., Kolmanovsky, I.V., and VanNieuwstadt, M., Proceedings of the 1999 IEEE International Conference on Control Applications, Aug. 22-27, 1999, pp. 852-857 vol. 1.

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