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A small concentric shaft inside the turbine shaft operated the front pump of the transmission to permit engagement of drive/reverse ranges when the car was stopped or moving slowly; at speeds over 15 mph (24 km/h), a differential-driven (from the car motion) rear pump of smaller capacity and greater efficiency took over and the front pump shut ...
2-speed automatic The Powerglide is a two-speed automatic transmission designed by General Motors . It was available primarily on Chevrolet from January 1950 [ 1 ] through 1973, although some Pontiac models also used this automatic transmission after the fire at the Hydra-Matic factory in 1953.
The main components of a parking pawl mechanism are the parking gear, parking pawl, actuator rod, cam collar, cam plate, pivot pin, and parking pawl return spring. The mechanism assembly is designed so that the parking pawl tooth collides and overrides the parking gear teeth (ratchets) until a safe engagement speed for the vehicle is reached.
In engineering, a dog is a tool or part of a tool, such as a pawl, that prevents or imparts movement through physical engagement. [1] It may hold another object in place by blocking it, clamping it, or otherwise obstructing its movement.
Dynaflow (Buick) The Dynaflow was an automatic transmission used in various forms in Buick cars by the General Motors Corporation from 1947 until 1963. The transmission initially used a five-element torque converter, with two impellers and two stators, as well as a planetary gearset that provided two forward speeds plus reverse.
This provides for two inputs and one output. Usually, in an automatic transmission, one component is held fixed, while another component is input, and the remaining component is used for output. By choosing a set of components for held, input, and output, the planetary gear will increase or decrease speed and change direction.