Engine brake for offroad vehicle

Details Engine brake for offroad vehicle Engine brake for offroad vehicle

1998-06-15

2000-07-11

Ta, Khoi Q.

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Speed responsive

474 14, 477 44, B60K 1706

Patent

active

060864923

ABSTRACT:
An engine brake for a vehicle having a frame rollably supported by at least one wheel, an engine supported by the frame and having an output shaft, the output shaft arranged to drive at least one wheel supporting the vehicle through a transmission, is disclosed. The transmission has a drive pulley driven by the output shaft and a driven pulley driven by the drive pulley. The drive pulley comprises a fixed sheave and a moveable sheave moveable relative to the fixed sheave. The moveable sheave in a first position relative to the fixed sheave causes the drive pulley to drive the driven pulley in a high speed position and the moveable sheave in a second position relative to the fixed sheave causing the drive pulley to drive the driven pulley in a low speed position. The engine brake comprises an air chamber defined in part by the moveable sheave and a vacuum apparatus removing air from the chamber and moving the moveable sheave to its second position when a speed of the engine is reduced.

REFERENCES:
patent: 3017783 (1962-01-01), Brugghen et al.
patent: 3653283 (1972-04-01), Betz
patent: 4206659 (1980-06-01), Rijsdijk

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