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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 ...
The transmission control unit (TCU) in older automobiles with a clutchless manual transmission (without a clutch pedal) typically consists of an electrical switch connected to the gearshift, that is activated whenever the internal transmission control unit senses driver touching the gearshift to switch gears, which then primes a sensor or ...
A PTO at the rear end of a farm tractor A PTO (in the box at the bottom) in the center of the three-point hitch of a tractor. A power take-off or power takeoff (PTO) is one of several methods for taking power from a power source, such as a running engine, and transmitting it to an application such as an attached implement or separate machine.
The 42RE + RH are both 4-speed automatic transmissions with identical gear ratios. This transmission came available in 1989 and it is paired with a 10.75-inch diameter torque converter. The RH is a hydraulic governor system that is rated as a medium-duty transmission. The RE is an electronic hydraulic system that is considered for heavy-duty use.
Allison RDS series 5- or 6-speed transmissions are used on most refuse trucks. The RDS is a fully automatic planetary gear transmission with a lock-up torque converter. Transfer cases are used on concrete pumps. They direct full transmission output to either the drive-line or the pump, but not both.
The A500, later renamed 40RH and 42RH (hydraulically controlled governor pressure) and 40RE, 42RE, 44RE (electronically controlled governor pressure, 1993-up), was an A904 derivative used in trucks and vans. Introduced in the 1988 model year on a limited basis, it was the first light-duty Chrysler four-speed automatic and was placed behind the ...
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The 6L 50 (and similar 6L 45) is a 6-speed longitudinally-mounted automatic transmission produced by General Motors.It is very similar in design to the larger GM 6L 80 and 6L 90, and is produced at GM Powertrain plants in Toledo, Ohio; Silao, Guanajuato, Mexico; and by the independent Punch Powerglide company in Strasbourg, France.