Throttle opening limiting system for a marine propulsion unit

Details Throttle opening limiting system for a marine propulsion unit Throttle opening limiting system for a marine propulsion unit

1993-05-21

1994-05-24

Swinehart, Edwin L.

Marine propulsion

Engine, motor, or transmission control means

For transmission

440 84, 440900, B60K 4100

Patent

active

053143620

ABSTRACT:
A throttle opening limiting system is provided for a marine propulsion unit comprising a throttle, a manually operated throttle control device and an intermediate linkage arrangement operatively connecting the manually operated throttle control device to the throttle. The intermediate linkage arrangement further comprises a means for setting a distinct and different maximum obtainable throttle opening position for each of a forward, a neutral and a reverse operative state of the marine propulsion unit. The throttle opening limiting system is fully openable in the forward operative state, is limited to an intermediate position in the reverse operative state, and is limited to a smaller opening position in the neutral operative state than the intermediate position of the reverse operative state. The throttle opening limiting system is capable of preventing overspeed engine rotation in both the neutral and reverse transmission operative states, while nevertheless securing the necessary thrust required for proper running of the craft in the reverse operative state.

REFERENCES:
patent: 2785584 (1957-03-01), Hambleton
patent: 3317012 (1967-05-01), Heidner et al.
patent: 4755156 (1988-07-01), Wagner

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