Machine element or mechanism – Gearing – Plural power paths to and/or from gearing
Patent
1986-03-03
1987-04-14
Braun, Leslie
Machine element or mechanism
Gearing
Plural power paths to and/or from gearing
74677, 180248, F16H 4700, F16H 4704, F16H 4708
Patent
active
046568891
ABSTRACT:
An arrangement for a four wheel drive motor vehicle which increases the rotational moment transfer from the front axle to the rear axle in the case of a large rotational speed differential between the two axles. The arrangement includes a lamella or plate clutch arranged between the front axle and the rear axle. The front axle is directly driven by the gear change transmission and the rear axle is indirectly driven by the front axle. A one way clutch and a reducing transmission are interposed with respect to the plate clutch in such a way that the characteristic curve for rotational moment transfer versus axle rotational speed differential exhibits a flat slope during normal driving conditions (relatively small speed differentials) and an increasingly steep slope during hazardous driving conditions (relatively large speed differentials).
REFERENCES:
patent: 2949047 (1960-08-01), Burckhardt
patent: 3110197 (1963-11-01), Prakash
patent: 4373604 (1983-02-01), Lunn et al.
patent: 4562897 (1986-01-01), Renneker
patent: 4601359 (1986-07-01), Weismann et al.
patent: 4605087 (1986-08-01), Ashauer et al.
Braun Leslie
Dr. Ing. h.c.F. Porsche Aktiengesellschaft
Wright Dirk
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