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US 11,448,146 B2Granted
Method and system for starting an internal combustion engine
AssigneeBombardier Recreational Products Inc.
InventorsNormand Lebreux, Michel Bernier, David Monfette, Bruno Schuehmacher
Life of this patent
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Abstract
A method for starting an internal combustion engine (ICE) having a crankshaft and an electric turning machine (ETM) operatively connected to the crankshaft comprises energizing an absolute position sensor adapted for providing an indication of an angular position of a rotor of the ETM and applying a current to the ETM to generate a sufficient torque to rotate the crankshaft.
Claims15
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:
- energizing an absolute position sensor adapted for providing a signal corresponding to an actual angular position of a rotor of the ETM when the rotor of the ETM is stopped;
- determining, based on the indication of the current position of the rotor of the ETM, a current position of a piston operatively connected to the crankshaft, the current position of the piston being in relation to a top dead center (TDC) position of the piston within a combustion chamber;
- and
- applying a current to the ETM to generate a sufficient torque to continuously rotate the crankshaft such that the ICE fires while the piston is within a ten degree range of the TDC position for a first time.
1 more element
Dependencies are inferred from the claim text.