Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1987-12-09
1990-01-30
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Fuel injection system
123425, 123435, 123436, 36443108, F02P 515, F02D 4126
Patent
active
048966398
ABSTRACT:
An engine control and combustion quality detection system and method are provided for an internal combustion engine having at least one control input such as spark advance angle or air/fuel ratio. A base value is established for the control input and the control input is periodically perturbed about the base value. A sensor senses an engine parameter such as knock or engine roughness representing the combustion quality of the engine and provides an output representing this engine parameter. A slope calculation device receives the output from the sensor when the control input is being perturbed about the base value and determines the slope or differential of the output from the sensor to determine the engine parameter as a function of the control input, thereby to provide an indication of combustion quality of the engine. By determining the combustion quality of the engine by calculating the slope of the sensor output when the perturbation device perturbs the first control input about the established base value, the noise component of the sensor output is substantially eliminated. The slope of the sensor output should be at or close to zero when combustion quality is acceptable.
REFERENCES:
patent: 4389992 (1983-06-01), Shigematsu et al.
patent: 4479476 (1984-10-01), Suzuki et al.
patent: 4502442 (1985-03-01), Takakuwa et al.
patent: 4503824 (1985-03-01), Ninomiya et al.
patent: 4509477 (1985-04-01), Takao et al.
patent: 4513718 (1985-04-01), Ishii et al.
patent: 4527524 (1985-07-01), Guipaud
patent: 4527526 (1985-07-01), Akasu
patent: 4539957 (1985-09-01), Haraguchi et al.
patent: 4596217 (1986-06-01), Bonitz et al.
patent: 4715344 (1987-12-01), Tomisawa
Lucas Industries Public Limited Company
Wolfe Willis R.
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