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1. (WO2018021087) METHOD FOR ESTIMATING DEGREE OF DETERIORATION OF ENGINE OIL IN DIESEL ENGINE

Pub. No.:    WO/2018/021087    International Application No.:    PCT/JP2017/025890
Publication Date: Fri Feb 02 00:59:59 CET 2018 International Filing Date: Wed Jul 19 01:59:59 CEST 2017
IPC: F01M 11/10
F02D 45/00
Applicants: ISUZU MOTORS LIMITED
いすゞ自動車株式会社
Inventors: YAMAZAKI Yukimi
山崎 幸実
Title: METHOD FOR ESTIMATING DEGREE OF DETERIORATION OF ENGINE OIL IN DIESEL ENGINE
Abstract:
This method for estimating the degree of deterioration of engine oil in a diesel engine 10 includes: a step of creating an engine oil deterioration map which defines, in association with a diesel engine load, an engine oil degree of deterioration which takes into account the effects of the injection end timing of main injection in the diesel engine, and the effects of the amount of smoke in exhaust gas from the diesel engine; a step of creating a load frequency map defining a load frequency of the diesel engine; and a step of estimating the engine oil degree of deterioration taking into account the injection end timing of main injection, the amount of smoke in the exhaust gas, and the load, on the basis of the engine oil deterioration map and the load frequency map.