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US 11,078,856 B2Granted
Wiebe function parameter identification method and information processing device
AssigneeFujitsu Limited
InventorsNoriyasu Aso, Masatoshi Ogawa
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Abstract
A Wiebe function parameter identification method, the method includes: acquiring, by a computer, operation data when an internal-combustion engine is in operation; and identifying values of a plurality of parameters included in a combination of at least two Wiebe functions including a first Wiebe function and a second Wiebe function based on the operation data and a first difference between values of a same parameter of the first Wiebe function and the second Wiebe function.
Claims20
A Wiebe function parameter identification method, the method comprising:
- acquiring, by a computer, operation data when an internal-combustion engine is in operation;
- identifying values of a plurality of parameters included in a combination of at least two Wiebe functions including a first Wiebe function and a second Wiebe function based on the operation data and a first difference between values of a same parameter of the first Wiebe function and the second Wiebe function;
- and
- controlling the internal-combustion engine based on the values of the parameters identified by:
- calculating current rate of heat release based on the value of each model parameter identified;
- calculating current in-cylinder pressure based on the calculated value of the current rate of heat release;
- calculating a generated torque of the engine based on the calculated value of the in-cylinder pressure;
- calculating a control target value of the engine to achieve a drive torque requested by the driver, based on the calculated value of the generated torque of the engine;
- wherein the driver requests the drive torque according to a vehicle speed and an accelerator opening, or for supporting the operation of the vehicle;
- and
- controlling the internal-combustion engine based on the calculated control target value of the engine.
8 more elements
An information processing device, comprising:
- a memory;
- and
- a processor coupled to the memory and configured to perform a process, the process includes;
- acquiring operation data when an internal-combustion engine is in operation;
- and
- identifying values of a plurality of parameters included in a combination of at least two Wiebe functions including a first Wiebe function and a second Wiebe function based on the operation data and a first difference between values of a same parameter of the first Wiebe function and the second Wiebe function;
- and
- controlling the internal-combustion engine based on the values of the parameters identified by:
- calculating current rate of heat release based on the value of each model parameter identified;
- calculating current in-cylinder pressure based on the calculated value of the current rate of heat release;
- calculating a generated torque of the engine based on the calculated value of the in-cylinder pressure;
- calculating a control target value of the engine to achieve a drive torque requested by the driver, based on the calculated value of the generated torque of the engine;
- wherein the driver requests the drive torque according to a vehicle speed and an accelerator opening, or for supporting the operation of the vehicle;
- and
- controlling the internal-combustion engine based on the calculated control target value of the engine.
12 more elements
Dependencies are inferred from the claim text.