EP 0860601 A3 20000119 - A fuel injection system for an internal combustion engine
Title (en)
A fuel injection system for an internal combustion engine
Title (de)
Kraftstoffeinspritzsystem für eine Brennkraftmaschine
Title (fr)
Système d'injection de combustible pour moteur à combustion interne
Publication
Application
Priority
- JP 3799697 A 19970221
- JP 20060197 A 19970725
Abstract (en)
[origin: EP0860601A2] In the fuel injection system, fuel is supplied to a common rail from a high pressure fuel pump, and injected into the cylinders of an engine, from the common rail, via fuel injection valves. An electronic control unit (ECU) of the engine controls the pressure in the common rail at a value determined by the operating conditions of the engine. The ECU further detects the pressure and the temperature of the fuel in the common rail, and determines the bulk modulus of elasticity of the fuel based on the pressure and the temperature of the fuel. The ECU calculates an estimated value of the pressure change in the common rail during the fuel injection period using the determined bulk modulus. If the difference between the estimated value of the pressure change and the pressure change actually measured during the fuel injection period is large, the ECU determines that the fuel injection system has failed. Since the estimated value of the pressure change is calculated based on the bulk modulus of elasticity which is determined in accordance with the actual pressure and temperature of the fuel, the accurate estimated value is obtained even if the pressure and the temperature of the fuel in the common rail change over a very wide range. <IMAGE>
IPC 1-7
IPC 8 full level
F02D 41/22 (2006.01); F02D 41/38 (2006.01); F02D 45/00 (2006.01); F02M 63/00 (2006.01); F02M 65/00 (2006.01)
CPC (source: EP)
F02D 41/221 (2013.01); F02D 41/3827 (2013.01); F02D 2041/224 (2013.01); F02D 2200/0604 (2013.01); F02D 2200/0606 (2013.01)
Citation (search report)
- [E] EP 0860600 A2 19980826 - TOYOTA MOTOR CO LTD [JP]
- [A] EP 0501459 A2 19920902 - NIPPON DENSO CO [JP]
- [A] US 5529044 A 19960625 - BARNES TRAVIS E [US], et al
- [A] EP 0651150 A2 19950503 - TOYOTA MOTOR CO LTD [JP], et al
- [A] EP 0516196 A2 19921202 - NIPPON DENSO CO [JP]
Designated contracting state (EPC)
AT BE CH DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0860601 A2 19980826; EP 0860601 A3 20000119; EP 0860601 B1 20021127; DE 69809614 D1 20030109; DE 69809614 T2 20030410; JP 3796912 B2 20060712; JP H10299557 A 19981110
DOCDB simple family (application)
EP 98102970 A 19980220; DE 69809614 T 19980220; JP 20060197 A 19970725