(19)
(11) EP 3 376 018 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
07.11.2018 Bulletin 2018/45

(43) Date of publication A2:
19.09.2018 Bulletin 2018/38

(21) Application number: 18154097.2

(22) Date of filing: 30.01.2018
(51) International Patent Classification (IPC): 
F02N 19/00(2010.01)
B60R 16/03(2006.01)
 F02N 11/08(2006.01)
F02N 11/04(2006.01)
(84) Designated Contracting States:
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 States:
BA ME
Designated Validation States:
MA MD TN

(30) Priority: 15.03.2017 TW 106108462

(71) Applicant: Kwang Yang Motor Co., Ltd.
Kaohsiung City 80794 (TW)

(72) Inventors:
  • LIAO, Wei-Xiang
    82055 Kaohsiung City (TW)
  • TENG, Thin-Liang
    82053 Kaohsiung City (TW)

(74) Representative: Regimbeau 
20, rue de Chazelles
75847 Paris Cedex 17
75847 Paris Cedex 17 (FR)

   


(54) SYSTEM AND METHOD FOR POSITIONING A CRANKSHAFT OF AN ENGINE OF A VEHICLE


(57) A method for positioning a crankshaft of an engine of a vehicle is to be implemented by a system that includes an Integrated Starter Generator, ISG, controller (21) and a main switch (20). The method is characterized by steps of: a) determining, after the main switch (20) is switched from a Key ON state to a Key OFF state where the ISG controller (21) is powered by an auxiliary power source, whether an engine speed is lower than a predetermined threshold for positioning the crankshaft; and b) performing, when it is determined that the engine speed is lower than the predetermined threshold, a crankshaft positioning process so that an angular position of the crankshaft does not correspond to a compression stroke of the engine while the crankshaft stops.







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