Title:
CONTROL APPARATUS AND CONTROL METHOD FOR VARIABLE VALVE TIMING MECHANISM
Document Type and Number:
WIPO Patent Application WO/2019/239636
Kind Code:
A1
Abstract:
The control apparatus and control method for a variable valve timing mechanism according to the present invention each involve: obtaining a first detection value of a rotation phase on the basis of the rotation angle of a motor; obtaining a second detection value of the rotation phase on the basis of the relative relationship between the rotation angle of a crankshaft and the rotation angle of a camshaft; calibrating the first detection value on the basis of the second detection value; obtaining a differential term proportional to the change rate of the difference between the first detection value and a target value; suppressing change of the differential term when calibrating the first detection value on the basis of the second detection value; and controlling the motor on the basis of an operation amount including the differential term.
Inventors:
JITSUISHI MAKOTO (JP)
MATSUO NOBUHIKO (JP)
MATSUO NOBUHIKO (JP)
Application Number:
PCT/JP2019/006402
Publication Date:
December 19, 2019
Filing Date:
February 20, 2019
Export Citation:
Assignee:
HITACHI AUTOMOTIVE SYSTEMS LTD (JP)
International Classes:
F01L1/352; F02D13/02
Domestic Patent References:
| WO2016063489A1 | 2016-04-28 |
Foreign References:
| JP2015140765A | 2015-08-03 | |||
| JP2004162706A | 2004-06-10 | |||
| JP2003295954A | 2003-10-17 |
Attorney, Agent or Firm:
OGAWA, Moriaki et al. (JP)
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