Internal-combustion engines – Charge forming device – Fuel injection system
Patent
1990-05-09
1991-01-15
Wolfe, Willis R.
Internal-combustion engines
Charge forming device
Fuel injection system
123488, 123492, F02D 4118
Patent
active
049845535
ABSTRACT:
A fuel control apparatus for an internal combustion engine which comprises a pressure detecting means for detecting a pressure in a bypass air passage which bypasses a throttle valve in an air intake system for an internal combustion engine, a first estimating means for estimating a value corresponding to the effective cross-sectional area of the bypass air passage, a second estimating means for estimating a pressure in an intake air pipe of the air intake system on the basis of a pressure value detected by the pressure detecting means and an estimated value of effective cross-sectional area obtained by the first estimating means, and an operating means for calculating a fuel injection quantity on the basis of an estimated value of pressure in the intake air pipe which is obtained by the second estimating means.
REFERENCES:
patent: 4475518 (1984-10-01), Kashiwaya et al.
patent: 4558678 (1985-12-01), Nishimura et al.
patent: 4702214 (1987-10-01), Wataya
patent: 4899713 (1990-02-01), Nakamura
patent: 4911133 (1990-03-01), Sogawa
patent: 4919100 (1990-04-01), Nakamura
patent: 4945883 (1990-08-01), Ono et al.
Kako Hajime
Kojima Shinji
Mitsubishi Denki & Kabushiki Kaisha
Wolfe Willis R.
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