Boots – shoes – and leggings
Patent
1994-03-01
1997-01-07
Trammell, James P.
Boots, shoes, and leggings
364550, 364424035, F01M 1104, G01M 1700, G07C 500
Patent
active
055923950
ABSTRACT:
A method and apparatus for determining and extending a change interval for an operating fluid of a unit, particularly for an engine of a motor vehicle, uses at least one directly or indirectly recorded operating variable which represents the qualitative condition of the operating fluid. An evaluation of the at least operating variable and a continuous calculation of the change interval therefrom is performed by a computing and control unit. The calculated change interval is related to a specified unit service interval and, if the change interval expires before the service interval, a regeneration signal for the removal of a certain quantity of the spent operating fluid and the replacement of the quantity with a fresh operating fluid is produced as a function of the difference therebetween.
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Braun Fritz
Felger Ursula
Jung Otto
Wojtacki Jakob
Mercedes-Benz AG
Smith Demetra R.
Trammell James P.
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