EP 3325796 A1 20180530 - INTERNAL COMBUSTION ENGINE AND METHOD FOR DETERMINING A LEAKAGE OF A CRANKCASE AND / OR A TANK BLEEDING SYSTEM
Title (en)
INTERNAL COMBUSTION ENGINE AND METHOD FOR DETERMINING A LEAKAGE OF A CRANKCASE AND / OR A TANK BLEEDING SYSTEM
Title (de)
BRENNKRAFTMASCHINE UND VERFAHREN ZUR ERKENNUNG EINER LECKAGE VON EINEM KURBELGEHÄUSE- UND/ODER EINEM TANK-ENTLÜFTUNGSSYSTEM
Title (fr)
MOTEUR A COMBUSTION INTERNE ET PROCEDE DE DETECTION DE FUITE D'UN SYSTEME D'EVACUATION DE GAZ D'UN CARTER ET / OU RESERVOIR
Publication
Application
Priority
- DE 102015213982 A 20150724
- EP 2016063587 W 20160614
Abstract (en)
[origin: WO2017016737A1] The invention relates to an internal combustion engine with a combustion air intake system in which a compressor is arranged and in which a throttle element is arranged downstream of the compressor in the flow direction of the combustion air. The internal combustion engine also comprises a tank ventilation system and a crankcase ventilation system. The tank ventilation system can be connected to the intake system downstream of the throttle element via a first non-return valve in a first line and upstream of the compressor via a second non-return valve in a second line and a third non-return valve in a second sub-line. The crankcase ventilation system can be connected to the intake system downstream of the throttle element via a fourth non-return valve in a third line and upstream of the compressor via a fourth line and the third non-return valve. The intake system can be connected to the second line downstream of the throttle element at a transitional point between the second line and the second sub-line via a fifth non-return valve in a fifth line. A nozzle is formed at the transitional point from the fifth line to the second line and the second sub-line, and the second line opens into the nozzle downstream of the second non-return valve. A first pressure sensor for measuring the pressure in the second line is provided in the second line between the second non-return valve and the nozzle. By means of the internal combustion engine design according to the invention with a crankcase and a tank ventilation system and by means of the corresponding methods, only a single pressure sensor is required to diagnose or detect a leak. A second pressure sensor can be advantageously used to locate a leak.
IPC 8 full level
F02M 35/10 (2006.01); F01M 13/00 (2006.01); F01M 13/02 (2006.01); F01M 13/04 (2006.01); F02M 25/08 (2006.01)
CPC (source: EP US)
F01M 13/022 (2013.01 - US); F01M 13/023 (2013.01 - EP US); F01M 13/028 (2013.01 - US); F01M 13/04 (2013.01 - US); F02M 25/0827 (2013.01 - EP US); F02M 25/089 (2013.01 - EP US); F02M 35/1038 (2013.01 - EP US); F01M 2013/0044 (2013.01 - US); F01M 2013/026 (2013.01 - EP US); F01M 2013/027 (2013.01 - EP US); F01M 2250/60 (2013.01 - US); F02M 25/0836 (2013.01 - US)
Citation (search report)
See references of WO 2017016737A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated extension state (EPC)
BA ME
DOCDB simple family (publication)
DE 102015213982 A1 20170126; CN 107532544 A 20180102; CN 107532544 B 20190920; EP 3325796 A1 20180530; EP 3325796 B1 20181107; US 10907591 B2 20210202; US 2018030937 A1 20180201; WO 2017016737 A1 20170202
DOCDB simple family (application)
DE 102015213982 A 20150724; CN 201680023343 A 20160614; EP 16730333 A 20160614; EP 2016063587 W 20160614; US 201715729740 A 20171011