AN ENGINE OIL VISCOSITY DIAGNOSTIC SYSTEM AND A METHOD OF DIAGNOSING ENGINE OIL VISCOSITY

摘要

TITLE: "An engine oil viscosity diagnostic system and a method of diagnosing engine oil viscosity" The invention relates to an engine oil viscosity diagnostic system, comprising a solenoid response module (72) that determines an actual response time based on a position signal; an expected response module (74) that determines an expected response time (88) based on system voltage and engine oil temperature; and a diagnostic module (76) that diagnoses viscosity of the engine oil based on the actual response time (84) and the expected response time (88). {Fig. 4}