Title:
ABUTMENT GAP ESTIMATION DEVICE, ABUTMENT GAP CONTROL DEVICE, ABUTMENT GAP ESTIMATION METHOD, AND ABUTMENT GAP CONTROL METHOD
Document Type and Number:
Japanese Patent JP2022053303
Kind Code:
A
Abstract:
To provide an abutment gap estimation device capable of appropriately estimating the size of an abutment of a piston ring.SOLUTION: An abutment gap estimation device comprises: an other portion temperature estimation unit for estimating a temperature of another portion other than a ring groove in a piston that constitutes an internal combustion engine; a ring groove temperature estimation unit for estimating a temperature of the ring groove on the basis of the temperature of the other portion estimated by the other portion temperature estimation unit; a piston ring temperature estimation unit for estimating a temperature of a piston ring on the basis of the temperature of the ring groove estimated by the ring groove temperature estimation unit; and a gap estimation unit for estimating the size of an abutment gap of the piston ring on the basis of the temperature of the piston ring estimated by the piston ring temperature estimation unit.SELECTED DRAWING: Figure 3
Inventors:
MITA TAKURO
Application Number:
JP2020160069A
Publication Date:
April 05, 2022
Filing Date:
September 24, 2020
Export Citation:
Assignee:
ISUZU MOTORS LTD
International Classes:
F02F5/00; F01P3/08; F16J9/00
Attorney, Agent or Firm:
Washeda International Patent Office