ATMOSPHERIC PRESSURE DETECTOR OF INTERNAL COMBUSTION ENGINE

Title:

ATMOSPHERIC PRESSURE DETECTOR OF INTERNAL COMBUSTION ENGINE

Document Type and Number:

WIPO Patent Application WO/2003/031793

Kind Code:

A1

Abstract:

An atmospheric pressure detector of an internal combustion engine (1), wherein intake pressures PMi [mmHg] at crank angular positions in increments of 30 [°CA (Crank Angle)] after the start of the internal combustion engine (1) are detected and the detected intake pressures RMi are uniformed according to a transition state to provide an atmospheric pressure and, when a difference &Dgr PM between the maximum value PMMAX and the minimum value PMMIN of the plurality of intake pressures PMi is as small as within a specified value, these plurality of intake pressures PMi are uniformed, whereby, since the atmospheric pressure when the intake pressures PMi are stable can be provided by a plurality of samplings at these crank angular positions, the reliability of the atmospheric pressure can be increased.

Inventors:

NAGATA KOUICHI
KURODA TAKAHIKO

Application Number:

PCT/JP2002/010340

Publication Date:

April 17, 2003

Filing Date:

October 03, 2002

Export Citation:

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Assignee:

DENSO CORP (JP)

International Classes:

F02D45/00; F02D41/18; (IPC1-7): F02D45/00

Foreign References:

JPS61185646A	1986-08-19
JPH01280662A	1989-11-10
JPH051615A	1993-01-08
JPS61185646A	1986-08-19

Other References: