Marine drive having speed controlled lock-up torque converter

Details Marine drive having speed controlled lock-up torque converter Marine drive having speed controlled lock-up torque converter

1982-12-23

1985-12-17

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

Including drive-lockup clutch

192 0076, 192 0096, B60K 4102

Patent

active

045587698

ABSTRACT:
A marine drive for a boat includes a torque converter between the engine and propulsion unit. The torque converter has a slip condition in which a torque magnifying, fluid coupling is interposed between the engine and the propulsion unit. The slip of the torque converter enhances acceleration of the boat by permitting rapid increases in engine speed and power through relieving propeller loading of the engine. The torque converter has a lock-up condition in which the input and output shafts are directly and mechanically coupled together to provide highly efficient, sustained speed operation of the boat. A control operates the torque converter between the slip and lock-up conditions. This control may be obtained responsive to operating conditions in the engine or torque converter, such as engine speed, torque converter slip, throttle position, intake manifold vacuum, and engine ignition advance. The torque converter may be placed in the slip condition at low speeds for slow speed trolling and during the shifting of direction controlling gears in the marine drive.

REFERENCES:
patent: 2584032 (1952-01-01), Lapsley
patent: 2891640 (1959-06-01), Binder
patent: 3390594 (1968-07-01), Gillespie
patent: 3887048 (1975-06-01), Jahnel et al.
patent: 3985046 (1976-10-01), Morris et al.
patent: 4388987 (1983-06-01), Hennessey et al.
patent: 4428259 (1984-01-01), Kubo et al.

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