Interrelated power delivery controls – including engine control – Clutch control – Condition responsive control
Patent
1991-12-27
1994-08-16
Lorence, Richard M.
Interrelated power delivery controls, including engine control
Clutch control
Condition responsive control
192 82T, 192103R, B60K 4102
Patent
active
053378660
ABSTRACT:
For the protection of an automatized friction clutch of a motor vehicle it is proposed, by means of a computer device (23) to compute periodically data for the instantaneous friction performance of the clutch (5) and to add them up in several also periodically actualized time window stores. The time window stores have different time windows and correspondingly store a range of friction work mean values. Associated with the individual time window stores are respectively several limit values, the magnitude is additionally a function of the air temperature of a clutch casing (37) surrounding the clutch (5). A computer device (23), depending upon the temperature measured by means of a temperature sensor (35) and upon the limit values ruling for this temperature, institutes graded protective measures. For safety reasons, none of the protective measures completely prevents the operativeness of the clutch (5). As the heat loading of the clutch (5) increases only the clutch comfort is increasingly reduced, and as the maximum loading limit is approached, active comfort-impairing measures, such as, e.g., oscillations of a regulating drive (19) of the clutch (5) causing "grab" of the clutch (5), are brought about.
REFERENCES:
patent: 4509625 (1985-04-01), Tellert
patent: 4662492 (1987-05-01), Troeder
patent: 4667787 (1987-05-01), Hofmann
patent: 4854433 (1989-08-01), Tellert
patent: 4971183 (1990-11-01), Tellert
patent: 4986401 (1991-01-01), Petzold et al.
Drexl Hans-Jurgen
Sturmer Winfried
Fichtel & Sachs AG
Lorence Richard M.
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