CONTROL DEVICE OF ENGINE

Title:

CONTROL DEVICE OF ENGINE

Document Type and Number:

Japanese Patent JP2017180354

Kind Code:

A

Abstract:

PROBLEM TO BE SOLVED: To provide a control device of an engine capable of accurately controlling a lifting amount of a valve by suppressing hydraulic pulsation in implementing control to retard a valve opening timing of a valve.SOLUTION: A control device of an engine controls opening/closing of a valve of the engine by a hydraulic-type variable valve mechanism 72 having a cam 72d, a pressure chamber 72c in which an engine oil is charged and an oil pressure of the engine oil is changed by motion of the cam 72d, and a hydraulic valve 72b connected to the pressure chamber 72c and controlling the oil pressure acting on an intake valve by being opened and closed. The hydraulic type variable valve mechanism 72 controls the hydraulic valve 72b so that a valve opening timing of the valve is retarded according to an operating stage of the engine, and further a mechanical variable valve mechanism 74 is disposed to control the opening/closing of the valve when the valve opening timing of the valve according to the operating state of the engine is retarded with respect to prescribed timing.SELECTED DRAWING: Figure 2

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Inventors:

SUEOKA KENYA
TAKAHASHI TOSHIAKI
HIDAKA MASATOSHI
YAMAOKA TOSHIMITSU

Application Number:

JP2016070468A

Publication Date:

October 05, 2017

Filing Date:

March 31, 2016

Export Citation:

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Assignee:

MAZDA MOTOR

International Classes:

F02D13/02; F01L1/344; F01L9/02; F02D9/02; F02D9/04; F02D11/06; F02D41/02; F02D41/04; F02D43/00; F02D45/00

Domestic Patent References:

JP2013147956A	2013-08-01
JP2013072303A	2013-04-22
JP2006152856A	2006-06-15
JP2015098803A	2015-05-28
JP2007016612A	2007-01-25
JP2005214115A	2005-08-11
JPH07189633A	1995-07-28
JP2009121481A	2009-06-04

Attorney, Agent or Firm:

Takaki Nishijima
Minoru Nakamura
Fumiaki Otsuka
Disciple Maru Ken
Ryohei Yoshino

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