Speed responsive systems

Details Speed responsive systems Speed responsive systems

1975-01-13

1976-10-05

Wood, Jr., M. H.

Motor vehicles

Including one or more ski-like or runner members

With at least one surface-engaging propulsion element

92 132, 317 5, B60K 3100

Patent

active

039839540

ABSTRACT:
A speed responsive system, particularly for motor vehicles, whereby the vehicle may be maintained at a predetermined speed. Voltages dependent on vehicle speed and rate of change of speed are compared with a reference voltage representing a desired speed and the resultant output is compared with a periodic signal to produce output pulses of constant frequency and of a width varying with the relative magnitudes of the input voltages. These pulses are applied to an electromagnetic valve which controls the admission of pulses of reduced gas pressure from the vehicle engine inlet manifold to a chamber of variable volume and the resultant movement of a wall of said chamber is employed to control the engine throttle.

REFERENCES:
patent: 3070185 (1962-12-01), Fales
patent: 3722614 (1973-03-01), Sakakibara
patent: 3767972 (1973-10-01), Noddings et al.

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