Global Patent Index - EP 0965741 A3

EP 0965741 A3 2001-12-05 - Method and device for controlling the idle speed of an engine

Title (en)

Method and device for controlling the idle speed of an engine

Title (de)

Verfahren und Vorrichtung zur steuerung der Leerlauf-Drehzahl einer Brennkraftmaschine

Title (fr)

procédé et dispositif de commande du régime ralenti d'un moteur a combustion interne

Publication

EP 0965741 A3 (EN)

Application

EP 99107971 A

Priority

IT MI981409 A

Abstract (en)

[origin: EP0965741A2] A method and an apparatus for controlling the idle operating conditions of an internal-combustion engine of a motor vehicle, upon variation in the power drawn from the voltage generator (W4) by the electric circuit (L-BA). The running speed of the engine is detected by a logic control unit (ME), for example a microcontroller, in relation to the frequency of the generator voltage within a predefined running speed range; by the same logic control unit (ME) the connected or disconnected state of the alternating-current electric load (L) of the vehicle is detected and, depending on the information received regarding the connected or disconnected state of the electric load (L) to the voltage generator (W4) and the running speed of the engine, the logic control unit (ME) causes activation or deactivation of an electronic control switch (SCR3 - figure 4) to connect the voltage generator (W4) to earth. <IMAGE>

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

F02D 41/16; F02D 41/08

IPC 8 full level (invention and additional information)

F02D 29/06 (2006.01); F02D 41/08 (2006.01); F02D 41/16 (2006.01)

CPC (invention and additional information)

F02D 41/083 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

EPO simple patent family

EP 0965741 A2 19991222; EP 0965741 A3 20011205; AR 018418 A1 20011114; BR 9902385 A 20000801; CN 1094560 C 20021120; CN 1239755 A 19991229; IT 1301760 B1 20000707; IT MI981409 A1 19991220; JP 2000027691 A 20000125

INPADOC legal status


2004-12-22 [18D] APPLICATION DEEMED TO BE WITHDRAWN

- Effective date: 20040622

2002-08-28 [AKX] PAYMENT OF DESIGNATION FEES

- Free text: AT DE ES FR IT SE

2002-08-28 [AXX] PAYMENT OF EXTENSION FEES

- Free text: SI PAYMENT 19990423

2002-07-24 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 20020521

2001-12-05 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A3

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

2001-12-05 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI PAYMENT 19990423

1999-12-22 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT DE ES FR IT SE

1999-12-22 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A2

- Designated State(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

1999-12-22 [AX] REQUEST FOR EXTENSION OF THE EUROPEAN PATENT TO:

- Free text: AL;LT;LV;MK;RO;SI PAYMENT 19990423