Exhaust gas recirculation apparatus

Details Exhaust gas recirculation apparatus Exhaust gas recirculation apparatus

2007-02-13

2007-02-13

Vo, Hieu T. (Department: 3747)

Data processing: vehicles, navigation, and relative location

Vehicle control, guidance, operation, or indication

With indicator or control of power plant

C701S108000, C123S568220

Reexamination Certificate

active

11151698

ABSTRACT:
In an electronic control unit31, a duty conversion map41from which a driving duty in energizing and driving an electromagnetic coil, not shown, of an electromagnetic vacuum adjustment valve12on the basis of a variable equivalent to target quantity of feedback of exhaust gas, for example, the magnitude of a desired negative pressure to a negative pressure output port (not shown) of the electromagnetic vacuum adjustment valve12, and a duty correction map42from which a correction value for the driving duty is acquired on the basis inputted battery voltage and engine cooling water temperature, are provided. The driving duty is multiplied by the correction value acquired from the duty correction map42, and on the basis of the corrected driving duty, energization to the electromagnetic vacuum adjustment valve12is performed by a driving circuit26.

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International Search Report for International Application No.: PCT/JP03/15695 mailed on Mar. 16, 2004 and English Translation thereof (8 pages).

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