US 11,852,087 B2
Method and system for starting an internal combustion engine
Normand Lebreux, Sherbrooke (CA); Michel Bernier, Sherbrooke (CA); David Monfette, Linz (AT); and Bruno Schuehmacher, Richmond (CA)
Assigned to BOMBARDIER RECREATIONAL PRODUCTS INC., Valcourt (CA)
Filed by BOMBARDIER RECREATIONAL PRODUCTS INC., Valcourt (CA)
Filed on Jul. 26, 2022, as Appl. No. 17/873,879.
Application 16/681,418 is a division of application No. 16/485,852, granted, now 10,975,824, issued on Apr. 13, 2021, previously published as PCT/IB2017/052825, filed on May 12, 2017.
Application 17/873,879 is a continuation of application No. 16/681,418, filed on Nov. 12, 2019, granted, now 11,448,146.
Application 16/681,418 is a continuation in part of application No. 15/775,616, granted, now 1,088,467, issued on May 1, 2021, previously published as PCT/IB2016/056824, filed on Nov. 11, 2016.
Claims priority of provisional application 62/458,882, filed on NaN, NaN.
Claims priority of provisional application 62/254,421, filed on Nov. 12, 2015.
Prior Publication US 2022/0364520 A1, Nov. 17, 2022
Int. Cl. F02D 41/00 (2006.01); F02D 41/06 (2006.01); F02N 3/02 (2006.01); F02N 11/04 (2006.01); F02N 11/06 (2006.01); F02B 33/04 (2006.01); F02P 5/04 (2006.01); F02N 11/08 (2006.01)
CPC F02D 41/009 (2013.01) [F02B 33/04 (2013.01); F02D 41/062 (2013.01); F02N 3/02 (2013.01); F02N 11/04 (2013.01); F02N 11/06 (2013.01); F02P 5/045 (2013.01); F02N 11/08 (2013.01); F02N 2011/0896 (2013.01); F02N 2200/021 (2013.01); F02N 2200/022 (2013.01); F02N 2300/104 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A method for starting an internal combustion engine (ICE) having a crankshaft and an electric turning machine (ETM) operatively connected to the crankshaft, the method comprising:
sensing a temperature related to a starting condition of the ICE;
in response to the sensed temperature exceeding a temperature threshold:
applying a current to the ETM to generate a sufficient torque to rotate the crankshaft based on an indication of an angular position of a rotor of the ETM obtained from an energized absolute position sensor; and
in response to the sensed temperature being less than the temperature threshold:
energizing at least one of the absolute position sensor and a crankshaft position sensor in response to a rotation of the crankshaft, the rotation of the crankshaft being provided by an actuation of a manual start.