Title:
HYDRAULIC CONTROL DEVICE OF VARIABLE VALVE MECHANISM
Document Type and Number:
Japanese Patent JP2022102624
Kind Code:
A
Abstract:
To provide a hydraulic control device of a variable valve mechanism which is suppressed in the occurrence of the shortage of hydraulic pressure.SOLUTION: A hydraulic control device of a hydraulic variable valve mechanism which can change a rotation phase of a camshaft with respect to a crankshaft comprises: a first calculation part for calculating first target hydraulic pressure being a target value of hydraulic pressure supplied to the variable valve mechanism which can maintain the rotation phase at a target phase on the basis of the target phase by the variable valve mechanism; a second calculation part for calculating second target hydraulic pressure being a target value of hydraulic pressure supplied to the variable valve mechanism which can maintain the rotation phase at the target phase on the basis of load torque being the resistance of the rotation of the camshaft which is received by the camshaft from a device driven by the rotation of the camshaft; and a decision part for deciding a larger one of the first hydraulic pressure and the second hydraulic pressure as final target hydraulic pressure.SELECTED DRAWING: Figure 6
More Like This:
| WO/2012/047748 | VARIABLE CAMSHAFT TIMING MECHANISM WITH A DEFAULT MODE |
Inventors:
ITO HISAYUKI
HOSOKI TAKAYUKI
HOSOKI TAKAYUKI
Application Number:
JP2020217464A
Publication Date:
July 07, 2022
Filing Date:
December 25, 2020
Export Citation:
Assignee:
TOYOTA MOTOR CORP
International Classes:
F01M1/16; F01L1/356; F02D45/00
Attorney, Agent or Firm:
Shuhei Katayama