Boots – shoes – and leggings
Patent
1986-01-27
1988-05-03
Lall, Parshotam S.
Boots, shoes, and leggings
123196S, 73 64, 340 52F, 364424, F01M 1110, G01N 2500
Patent
active
047424761
ABSTRACT:
A number indicative of the number of engine revolutions corresponding to the useful life of the engine oil in a motor vehicle is stored in nonvolatile memory. As the vehicle is operated, the number is periodically decremented by an amount determined in relation to a penalty factor and the number of engine revolutions which occur in the period. The penalty factor is periodically updated and is determined in relation to the operating temperature of the engine oil, based on empirically determined data. The stored number represents the remaining life of the engine oil and is continuously displayed for the information of the operator. A warning lamp is lit to alert the operator to change the oil soon when the stored number is reduced to within 10% of the originally stored value. When the oil is changed, a reset switch is actuated and the number is reset to its original value.
REFERENCES:
patent: 4007629 (1977-02-01), Hochstein
patent: 4328480 (1982-05-01), Keitel et al.
patent: 4506337 (1985-03-01), Yasuhara
patent: 4629334 (1986-12-01), Hochstein
"Verschleibgerechte Fahrzeugwartung" MOT, June 84.
Nguyen Trieu N.
Schwartz Ellen S.
Smolenski Donald J.
Wisehart Ann J.
General Motors Corporation
Lall Parshotam S.
Navarre Mark A.
LandOfFree
Automatic engine oil change indicator system does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Automatic engine oil change indicator system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Automatic engine oil change indicator system will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1510697