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A governor, or speed limiter or controller, is a device used to measure and regulate the speed of a machine, such as an engine.. A classic example is the centrifugal governor, also known as the Watt or fly-ball governor on a reciprocating steam engine, which uses the effect of inertial force on rotating weights driven by the machine output shaft to regulate its speed by altering the input flow ...
Centrifugal governors are used in many modern repeating watches to limit the speed of the striking train, so the repeater does not run too quickly. Another kind of centrifugal governor consists of a pair of masses on a spindle inside a cylinder, the masses or the cylinder being coated with pads, somewhat like a centrifugal clutch or a drum brake.
The first car with Teetor's "speedostat" system was the 1958 Chrysler Imperial (called "auto-pilot"), using a speed control dial on the dashboard. [9] This system calculated ground speed from the rotating speedometer cable and used a bi-directional screw-drive electric motor to vary the throttle position as needed.
European Citroën, [3] BMW, [4] Mercedes-Benz, [5] Peugeot, [6] Renault, [7] Tesla [8] as well as some Ford [9] and Nissan car and van models have driver-controlled speed limiters fitted or available as an optional accessory which can be set by the driver to any desired speed; the limiter can be overridden if required by pressing hard on the ...
A diagram which shows the interconnection of process equipment and the instrumentation used to control the process. In the process industry, a standard set of symbols is used to prepare drawings of processes. The instrument symbols used in these drawings are generally based on International Society of Automation (ISA) Standard S5.1
The results of this research, as well as guidelines on how to best implement the symbols was presented in a report titled Symbol Signs – The development of Passenger/Pedestrian Oriented Symbols for Use in Transportation-Related Facilities in November 1974. [2] In 1979, 16 symbols were added, bringing the total count to 50. [3]
Wall Street lobby groups have chafed under President Joe Biden's regulators and are seeking major changes from Trump, who has promised to slash rules and cut taxes, as Reuters reported last week.
Electronic regulators as used in modern railway sets where the voltage is raised or lowered to control the speed of the engine Mechanical systems such as valves as used in fluid control systems. Purely mechanical pre-automotive systems included such designs as the Watt centrifugal governor whereas modern systems may have electronic fluid speed ...