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AssigneeHitachi Automotive Systems, Ltd.
InventorKentaro Mikawa
Estimating the term…
Even when a crankshaft reversely rotates, a rotation phase of a camshaft can be accurately detected. A motor shaft rotation angle, a crankshaft forward rotation angle, a crankshaft reverse rotation angle, a final crankshaft rotation angle, a sprocket rotation angle of an electric VTC where a sprocket rotates at ½ rotation speed of the crankshaft and a stator of an electric motor are integrally rotated, a motor shaft rotation angle changing amount during a control period, a sprocket rotation angle changing amount, a motor shaft rotation angle changing amount, an intake camshaft rotation angle changing amount, and a current real rotation angle of the intake camshaft are calculated sequentially, and the VTC manipulated variable is computed so that the VTC real angle follows a VTC target angle.
A control device of a variable valve timing mechanism in an internal combustion engine, comprising:
A control device of a variable valve timing mechanism in an internal combustion engine, comprising:
A control method of a variable valve timing mechanism in an internal combustion engine, comprising steps of:
Dependencies are inferred from the claim text.