Title:
ABUTMENT GAP ESTIMATION DEVICE, ABUTMENT GAP CONTROL DEVICE, ABUTMENT GAP ESTIMATION METHOD, AND ABUTMENT GAP CONTROL METHOD
Document Type and Number:
WIPO Patent Application WO/2022/065126
Kind Code:
A1
Abstract:
This abutment gap estimation device comprises: a part temperature estimation unit that estimates the temperature of a part other than a ring groove in a piston constituting an internal combustion engine; a ring groove temperature estimation unit that estimates the temperature of the ring groove on the basis of the temperature of the part estimated by the part temperature estimation unit; a piston ring temperature estimation unit that estimates the 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 that estimates 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.
Inventors:
MITA TAKURO (JP)
Application Number:
PCT/JP2021/033666
Publication Date:
March 31, 2022
Filing Date:
September 14, 2021
Export Citation:
Assignee:
ISUZU MOTORS LTD (JP)
International Classes:
F02F5/00; F01P3/08; F16J9/00
Foreign References:
| JP2019127840A | 2019-08-01 | |||
| JP2010285944A | 2010-12-24 | |||
| JP2007198999A | 2007-08-09 | |||
| JPH0613421Y2 | 1994-04-06 |
Attorney, Agent or Firm:
WASHIDA & ASSOCIATES (JP)
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