Apparatus and method for predicting replacement timing of engine

Details Apparatus and method for predicting replacement timing of engine Apparatus and method for predicting replacement timing of engine

1998-09-04

1999-10-19

Hofsass, Jeffery A.

Communications: electrical

Land vehicle alarms or indicators

Internal alarm or indicator responsive to a condition of the...

340438, 3404574, 123196S, 701 30, 731125, 73 5305, B60Q 100

Patent

active

059696010

ABSTRACT:
An apparatus and method for predicting a lubricating oil replacement time for an engine by precisely predicting a total acid value and/or an amount of soot in a lubricating oil and by displaying an accurate time which will elapse before a required lubricating oil replacement. Accurate prediction of lubricating oil replacement prevents engine seizing and other damage and avoids wasteful replacement of otherwise useful lubricating oil.

REFERENCES:
patent: 4506337 (1985-03-01), Yasuhara
patent: 4533900 (1985-08-01), Muhlberger et al.
patent: 4742476 (1988-05-01), Schwartz et al.
patent: 4970492 (1990-11-01), King
patent: 5571950 (1996-11-01), Waddoups et al.
patent: 5750887 (1998-05-01), Schricker

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