Method and apparatus for starting an engine using a starter/alternator and an accessory drive
First Claim
1. A method of controlling the starting of an internal combustion engine having a starter/generator coupled to the crankshaft of the engine and an accessory coupled through a clutch to an engine drive, said accessory driven by an electric motor, said method comprising:
- operating the engine accessory with the electric motor while the clutch is disengaged;
engaging the clutch while operating the engine accessory with the motor; and
while the clutch is engaged and while operating the engine accessory with the motor, starting the engine with the starter/generator.
3 Assignments
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Accused Products
Abstract
A system (40) for starting an internal combustion engine (12) of an automotive vehicle (10) has a controller (54) coupled to a starter/generator (42). The engine (12) has a crankshaft (50) and an engine accessory assembly that includes an electric motor (76) and a clutch (74). The controller (54) initiates the rotation of the crankshaft (50) with the starter/generator (42) and the electric motor (76) engaged to the crankshaft through the clutch (74), simultaneously. The controller (54) starts the engine (12) when the crankshaft (50) reaches a predetermined speed.
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Citations
20 Claims
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1. A method of controlling the starting of an internal combustion engine having a starter/generator coupled to the crankshaft of the engine and an accessory coupled through a clutch to an engine drive, said accessory driven by an electric motor, said method comprising:
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operating the engine accessory with the electric motor while the clutch is disengaged;
engaging the clutch while operating the engine accessory with the motor; and
while the clutch is engaged and while operating the engine accessory with the motor, starting the engine with the starter/generator. - View Dependent Claims (2, 3, 4, 5)
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6. A method of stating an internal combustion engine of a vehicle with a starter/generator comprising:
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rotating the crankshaft of the vehicle with the starter/generator;
rotating an accessory with an electric motor; and
simultaneously with rotating the crankshaft of the vehicle with the starter/generator, engaging a clutch to rotate the crankshaft with the electric motor; and
starting the engine. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A system for an automotive vehicle comprising:
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an internal combustion engine having a crankshaft;
a starter/generator coupled to the crankshaft;
an engine accessory assembly coupled to the crankshaft, said assembly having an accessory, a clutch and an electric motor;
a controller coupled to the starter/generator, the clutch and the motor, said controller initiating the rotation of said crankshaft simultaneously with the starter alternator and the electric motor engaged to the crankshaft through the clutch, said controller starting said engine when the crankshaft reaches a predetermined speed. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 20)
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Specification