Transmission system
US4481844A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 1982 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Feb 2, 2002 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2015/383
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission system comprises an engine (10) which drives a propeller shaft (14) through continuously variable gearing (CVG) (11), split path gearing (12), and a disconnector device (13). The gear ratio of the CVG (11) is controlled by an actuator (24). The input and output shaft speeds of the CVG (11) are sensed by transducers (25, 26) and the propeller shaft speed is sensed by a pair of transducers (27, 28). The system is responsive to an accelerator pedal (22) and a selector switch (23), and controls a throttle (19) via an electric motor (20). In normal operation, with the selector switch (23) in the drive position (D) or the reverse position (R), two signal generators (41, 42) calculate a target throttle position and a target engine speed and the motor (20) and actuator (24) adjust the throttle (19) and CVG (11) accordingly. When the switch (23) is in the neutral position (N) or the park position (P), the disconnector device (13) receives the drive from the propeller shaft (14). The speed (N.sub.O ') of the propeller shaft (14) corresponding to the prevailing setting of the CVG (14) is calculated by circuitry (30 to 34) responsive to transducers (25, 26). The calculated speed…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.