CONTROL DEVICE OF ENGINE WITH VARIABLE VALVE TIMING MECHANISM
Number of patents in Portfolio can not be more than 2000
United States of America
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Feb 13, 2020
app pub date -
Oct 28, 2016
filing date -
Oct 28, 2016
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Abstract
An engine includes a variable valve timing (VVT) mechanism that changes an opening timing or a closing timing of at least one of an intake valve or an exhaust valve in accordance with an operating region of the engine, and an oil jet that injects oil in a piston direction under a pressure of a first predetermined oil pressure or more. The control device of the engine controls supply of an oil pressure to the VVT mechanism in such a manner that an upper limit of an oil pressure used by the VVT mechanism is set to be lower than a first predetermined oil pressure and an operating speed of the VVT mechanism is high in a direction in which an overlap amount between open periods between an intake valve and an exhaust valve increases and is low in a direction in which the overlap amount decreases.
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