Internal combustion engine having two fuel injectors per cylinder and control method therefor
AssigneeBombardier Recreational Products Inc.
InventorsBruno Schuehmacher, Luc Champigny
Life of this patent
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Abstract
A two-stroke internal combustion engine has a crankcase, a cylinder block defining at least one cylinder, a cylinder, a crankshaft, at least one piston, at least one scavenge port, at least one throttle body for supplying air to an interior of the crankcase, at least one direct fuel injector fluidly communicating with at least one combustion chamber for injecting fuel directly in the at least one combustion chamber; and at least one port fuel injector fluidly communicating with the interior of the crankcase for injecting fuel upstream of the at least one combustion chamber. Methods for controlling an engine having at least one direct fuel injector and at least one port fuel injector are also described.
Claims20
A method for controlling a two-stroke internal combustion engine, the engine having at least one combustion chamber, at least one direct fuel injector for injecting fuel directly in the at least one combustion chamber, and at least one port fuel injector for injecting fuel upstream of the at least one combustion chamber, the method comprising:
- determining a first fuel quantity to be supplied to the at least one combustion chamber;
- injecting a second fuel quantity in the at least one combustion chamber using the at least one direct fuel injector;
- and
- injecting a third fuel quantity upstream of the at least one combustion chamber using the at least one port fuel injector,
- a sum of the second and third fuel quantities being initially greater than the first fuel quantity.
Dependencies are inferred from the claim text.