Method of IC Engine cooling incorporating fuzzy logic

Chris Brace (Inventor), Stephen John Joyce (Inventor), Iain Gouldson (Inventor), Christopher David Bush (Inventor), Noel Rodney Martin Henderson (Inventor)

Research output: Patent

Abstract

A method of regulating the temperature of an engine for an automobile having a radiator, coolant pump, coolant fan and coolant flow regulating valve. The method uses a predictive feedforward element combined with a fuzzy logic controller to achieve accurate control over engine temperature. The fuzzy logic feedback is only utilised in the event that the predictive control results in a cylinder head temperature outside a predetermined range. The system determines the required heat to be output by the radiator, determines the required engine cylinder head temperature and, using a radiator simulation model, determines from the required heat output, a first pump speed, a first fan speed and a first valve position. These values are used for control if the error between the actual and desired cylinder head temperatures is within limits 208, 210.; If not, modifiers to the first values are calculated using fuzzy logic rules and used for control 212.
Original languageEnglish
Patent numberGB2425619 (A)
IPCF01P7/14
Publication statusPublished - 1 Nov 2006

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Fuzzy logic
Cylinder heads
Engines
Cooling
Radiators
Coolants
Fans
Temperature
Pumps
Engine cylinders
Automobiles
Feedback
Controllers
Hot Temperature

Cite this

Brace, C., Joyce , S. J., Gouldson, I., Bush , C. D., & Henderson, N. R. M. (2006). IPC No. F01P7/14. Method of IC Engine cooling incorporating fuzzy logic. (Patent No. GB2425619 (A)).

Method of IC Engine cooling incorporating fuzzy logic. / Brace, Chris (Inventor); Joyce , Stephen John (Inventor); Gouldson, Iain (Inventor); Bush , Christopher David (Inventor); Henderson, Noel Rodney Martin (Inventor).

IPC No.: F01P7/14. Patent No.: GB2425619 (A).

Research output: Patent

Brace, C, Joyce , SJ, Gouldson, I, Bush , CD & Henderson, NRM 2006, Method of IC Engine cooling incorporating fuzzy logic, Patent No. GB2425619 (A), IPC No. F01P7/14.
Brace C, Joyce SJ, Gouldson I, Bush CD, Henderson NRM, inventors. Method of IC Engine cooling incorporating fuzzy logic. F01P7/14. 2006 Nov 1.
Brace, Chris (Inventor) ; Joyce , Stephen John (Inventor) ; Gouldson, Iain (Inventor) ; Bush , Christopher David (Inventor) ; Henderson, Noel Rodney Martin (Inventor). / Method of IC Engine cooling incorporating fuzzy logic. IPC No.: F01P7/14. Patent No.: GB2425619 (A).
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AB - A method of regulating the temperature of an engine for an automobile having a radiator, coolant pump, coolant fan and coolant flow regulating valve. The method uses a predictive feedforward element combined with a fuzzy logic controller to achieve accurate control over engine temperature. The fuzzy logic feedback is only utilised in the event that the predictive control results in a cylinder head temperature outside a predetermined range. The system determines the required heat to be output by the radiator, determines the required engine cylinder head temperature and, using a radiator simulation model, determines from the required heat output, a first pump speed, a first fan speed and a first valve position. These values are used for control if the error between the actual and desired cylinder head temperatures is within limits 208, 210.; If not, modifiers to the first values are calculated using fuzzy logic rules and used for control 212.

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