Control systems for continuously variable ratio transmissions (C

Details Control systems for continuously variable ratio transmissions (C Control systems for continuously variable ratio transmissions (C

1981-06-01

1984-08-14

Herrmann, Allan D.

Machine element or mechanism

Elements

Gear casings

74857, 74866, 74336R, 192 0076, 192 0032, 192 358, F16H 3706

Patent

active

044649525

ABSTRACT:
A transmission incorporating a continuously variable ratio unit connected to further gearing, such that a plurality of regimes are available with synchronous shifting between regimes, is controlled such that to avoid hunting between regimes when the transmission is running at or around the synchronous ratio, regime and ratio changing beyond the synchronous ratio is inhibited until the optimum ratio for the prevailing operating conditions differs from the synchronous by a predetermined value.

REFERENCES:
patent: 4107776 (1978-08-01), Beale
patent: 4140031 (1979-02-01), Sibeud et al.
patent: 4281567 (1981-08-01), Maurer
patent: 4291594 (1981-09-01), Baudoin
patent: 4297918 (1981-11-01), Perry et al.
patent: 4355547 (1982-10-01), Poole et al.

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