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US 7,621,174 B2Granted
Device for detecting cetane value of fuel used by an engine
AssigneeNissan Motor Co., Ltd.
InventorAsami Takaku
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AssigneeNissan Motor Co., Ltd.
InventorAsami Takaku
Estimating the term…
A fuel cetane determination device for an engine is disclosed. In one embodiment, the device comprises a controller that is arranged and configured to determine a rapidness of combustion based on a parameter relating to a combustion state of an engine. The controller is further arranged and configured to determine the cetane value of the fuel in use by the engine based on the rapidness of combustion from a correlation between the rapidness of combustion and the cetane value when the engine is in a first operating condition. The controller is further arranged and configured to determine the cetane value of the fuel in use by the engine based on the rapidness of combustion from a correlation between the rapidness of combustion and the cetane value when the engine is in a second operating condition. The correlation for the second operating condition has a different characteristic tendency from the correlation for the first operating condition. A method is also disclosed.
A fuel cetane determination device for an engine, comprising a controller that is arranged and configured to:
A method for determining the cetane value of a fuel used by an engine, comprising:
A device for determining fuel cetane value use in an engine, comprising:
A device for determining the cetane value of a fuel used by an engine, comprising:
Dependencies are inferred from the claim text.