| US 7,599,781 B2 | ||
| Control system for internal combustion engine | ||
| Satoshi Yamaguchi, Saitama-ken (Japan); Mamoru Hasegawa, Saitama-ken (Japan); Naoto Kitayama, Saitama-ken (Japan); and Hideki Sakamoto, Saitama-ken (Japan) | ||
| Assigned to Honda Motor Co., Ltd., Tokyo (Japan) | ||
| Filed on Aug. 27, 2007, as Appl. No. 11/892,698. | ||
| Claims priority of application No. 2006-228933 (JP), filed on Aug. 25, 2006; and application No. 2006-308150 (JP), filed on Nov. 14, 2006. | ||
| Prior Publication US 2008/0051978 A1, Feb. 28, 2008 | ||
| Int. Cl. G06F 19/00 (2006.01); G01N 33/22 (2006.01); G01M 15/00 (2006.01) | ||
| U.S. Cl. 701—103 [701/113; 73/35.02; 73/114.38] | 7 Claims |
| 1. A control system for an internal combustion engine, for controlling the engine based on a fuel property parameter indicative
of a property of fuel used in the engine which is installed on a vehicle, comprising:
operating condition-detecting means for detecting operating conditions of the engine;
fuel property parameter-estimating means for estimating the fuel property parameter when the detected operating conditions
of the engine correspond to any of a plurality of operation modes; and
fuel property parameter-determining means for determining, depending on a plurality of fuel property parameters estimated
in the respective operation modes, one of the fuel property parameters as the fuel property parameter for control of the engine.
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