Title:
LAMBDA SENSOR PREHEATING CONTROL METHOD AND LAMBDA SENSOR DRIVING CONTROL DEVICE
Document Type and Number:
WIPO Patent Application WO/2014/132804
Kind Code:
A1
Abstract:
In order to make it possible to reliably ensure desired effective voltage in preheating control, on the basis of a correlation between the battery voltages (Vb) of a vehicle battery and correction values (c) which are prestored, an arithmetic and control unit (52) reads a correction value (c) corresponding to a battery voltage (Vb) at the time of correction (S104, S106), adds the correction value (c) to a duty ratio calculated by a predetermined arithmetic expression to thereby compensate for a decrease in the effective value of pulsed voltage, thereby making it possible to reliably ensure desired effective voltage in preheating control.
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Inventors:
MIZUTANI HIROYUKI (JP)
Application Number:
PCT/JP2014/053305
Publication Date:
September 04, 2014
Filing Date:
February 13, 2014
Export Citation:
Assignee:
BOSCH CORP (JP)
International Classes:
F02D45/00; G01N27/409
Foreign References:
| JP2009294006A | 2009-12-17 | |||
| JP2008232961A | 2008-10-02 | |||
| JP2007225560A | 2007-09-06 | |||
| JP2004093386A | 2004-03-25 | |||
| JP2009288082A | 2009-12-10 |
Other References:
See also references of EP 2993465A4
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