Exhaust gas recirculating controller

Details Exhaust gas recirculating controller Exhaust gas recirculating controller

1997-02-18

1998-03-10

Wolfe, Willis R.

Internal-combustion engines

Charge forming device

Including exhaust gas condition responsive means

123571, F02D 4114, F02M 2507

Patent

active

057249504

ABSTRACT:
An exhaust passage is connected to an intake passage of an engine through an exhaust recirculating valve. A target opening of the exhaust recirculation valve is first set according to a target exhaust recirculation rate depending on engine running conditions, the total intake air flow cross-sectional area of the engine, and a first correction value set according to the exhaust pressure. By applying this corrected value, the same EGR is always obtained on both low ground and high ground regardless of the engine running conditions. Preferably, the target opening is further corrected by a second correction value set based on the exhaust temperature.

REFERENCES:
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patent: 4790286 (1988-12-01), Nishida et al.
patent: 5005552 (1991-04-01), Kawamura
patent: 5205260 (1993-04-01), Takahashi et al.
patent: 5503129 (1996-04-01), Robichaux et al.
patent: 5520161 (1996-05-01), Klopp
patent: 5524591 (1996-06-01), Hirota et al.
patent: 5579743 (1996-12-01), Kadowaki
patent: 5601068 (1997-02-01), Nozaki
JSME Mechanical Engineer's Handbook, p. B5-209, Japan Society of Mechanical Engineering, Jan. 1986.

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