JPS62183057U - - Google Patents

Description

[Brief explanation of the drawing]

Figures 1 to 7 relate to an embodiment of this invention, with Figure 1 being a configuration diagram, Figure 2 being a block diagram, Figure 3 being a flowchart, and Figure 4 being a basic control duty value for exhaust gas recirculation. Explanatory diagram: Figure 5 is an explanatory diagram showing the basic exhaust recirculation weight, Figure 6 is an explanatory diagram showing the exhaust recirculation correction duty value, and Figure 7 is an explanatory diagram showing the air-fuel mixture weight depending on the absolute pressure in the intake passage and the engine speed. The explanatory drawings, FIGS. 8 and 9, are partial block diagrams showing other embodiments. {39... negative pressure sensor, 41... atmospheric pressure sensor} (air mixture amount detection means), 45... air flow meter (intake air amount detection means).

Claims (1)

[Scope of utility model registration request] basic control amount determining means for determining a basic control amount for exhaust gas recirculation according to operating conditions; intake air amount detection means; air mixture amount detection means; and intake air amount detected by the intake air amount detection means and the mixture. Exhaust recirculation amount calculating means calculates the amount of exhaust gas recirculation based on the amount of air-fuel mixture detected by the air amount detection means, and compares the basic control amount of exhaust recirculation with the amount of exhaust recirculation, and if there is a difference between these amounts, the amount of exhaust recirculation is determined. An exhaust gas recirculation control device comprising a correction means for correcting a flow rate so as to match a basic control amount of exhaust gas recirculation.