Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Preselected indexed position
Patent
1976-12-17
1978-04-04
Scott, Samuel
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Preselected indexed position
192 33, B60K 4104, F16H 3900
Patent
active
040820114
ABSTRACT:
The power train has a manual throttle controlled gas turbine engine having a high no load idle speed and a transmission having a low capacity fluid coupling and a variable capacity slipping friction clutch connected in parallel to the input of a multiratio gear unit for driving a vehicle. During engine idle with the vehicle stationary, when the gear unit is in neutral, the fluid coupling is unloaded to permit the engine to operate and drive the accessories at a high no load idle speed. When the gear unit is placed in a drive ratio, the fluid coupling is stalled loading the engine and reducing the no load idle speed to a regulated lower drive starting idle speed range, to reduce the inertia energy level for smooth drive starting clutch engagement and to maintain the engine output speed in a proper vehicle accessory operating idle speed range. When the throttle is increased from idle to initiate vehicle drive, in a minimal low throttle range, the engine torque and speed will increase in accordance with the fluid coupling stall torque characteristics, in a large middle throttle range, the torque capacity of the slipping friction clutch will increase proportional to the compressor discharge pressure of the gas turbine engine and the engine output torque will increase with reduced engine output speed to provide normal drive initiating torque requirements and in a small maximum throttle range, full capacity non-slip engagement of the friction clutch will provide increased engine torque at zero engine output speed to maximum torque to meet maximum drive initiating torque requirements.
REFERENCES:
patent: 2728427 (1955-12-01), Lucia
patent: 3068974 (1962-12-01), Jandasek
patent: 3719093 (1973-03-01), Edmunds
Anderson Richard B.
McQuinn Ted M.
General Motors Corporation
Heiter A. M.
McKenzie, Jr. Frank H.
Scott Samuel
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