Global Patent Index - EP 1316720 A1

EP 1316720 A1 2003-06-04 - Common rail fuel injection system

Title (en)

Common rail fuel injection system

Title (de)

Common-Rail-Kraftstoffeinspritzsystem

Title (fr)

Système d'injection de carburant à rampe commune

Publication

EP 1316720 A1 (EN)

Application

EP 02026591 A

Priority

JP 2001363716 A

Abstract (en)

A common rail type fuel injection system improves detection accuracy of common rail pressure with an ECU (10) without increasing the failure rate of a common rail pressure sensor. Two common rail pressure sensors (S1,S2) are disposed in a common rail type fuel injection system. Characteristics standards of the two common rail pressure sensors (S1,S2) are divided into two or more parts. An actual common rail pressure Pc corresponding to a fuel injection pressure is calculated by averaging electric signals output by the common rail pressure sensors in the respective characteristics standards divided into the two or more parts. Thus, the detection accuracy of the actual common rail pressure Pc is improved without increasing the failure rate of the common rail pressure sensor, and variations in injection quantity of fuel injected from injectors of respective cylinders are reduced. <IMAGE>

IPC 1-7 (main, further and additional classification)

F02M 63/02

IPC 8 full level (invention and additional information)

G01L 23/18 (2006.01); F02D 41/22 (2006.01); F02D 41/38 (2006.01); F02D 41/40 (2006.01); F02D 45/00 (2006.01); F02M 47/00 (2006.01); F02M 55/02 (2006.01); F02M 63/02 (2006.01)

CPC (invention and additional information)

F02D 41/3836 (2013.01); F02D 41/222 (2013.01); F02M 63/0225 (2013.01); F02D 2041/223 (2013.01); F02D 2200/0602 (2013.01); F02D 2200/0604 (2013.01); F02D 2400/08 (2013.01); F02M 55/025 (2013.01); F02M 2200/247 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family

EP 1316720 A1 20030604; EP 1316720 B1 20070110; DE 60217460 D1 20070222; DE 60217460 T2 20071011; JP 2003161225 A 20030606; JP 4022853 B2 20071219