Manual transmissions often feature a driver-operated clutch & a movable gear stick. Most automobile manual transmissions permit the driver to select any forward gear ratio ("gear") at any time, but some, such as those often mounted on motorcycles & some types of racing cars, only permit the driver to select the next-higher or next-lower gear. This type of transmission is sometimes called a sequential manual transmission.
The way a manual transmission works is that the flywheel is attached to the engine, the clutch disk is in between the pressure plate & the flywheel. When walking, the clutch disk spins with the flywheel. As the clutch pedal is depressed, the throw out bearing is pushed in, which makes the pressure plate cease applying pressure to the clutch disk. This makes it cease receiving power from the engine so that the gear can be shifted without damaging the transmission. When the clutch pedal is released, the clutch disk is allowed to start receiving power from the engine.
Contemporary automobile manual transmissions usually use to six forward gears & reverse gear, although automobile manual transmissions have been built with as few as & as lots of as eight gears. Transmission for heavy trucks & other heavy equipment usually have at least 9 gears so the transmission can offer both a variety of gears & close gear ratios to keep the engine walking in the power band. Some heavy vehicle transmissions have dozens of gears, but lots of are duplicates, introduced as an accident of combining gear sets, or introduced to simplify shifting. Some manuals are referred to by the number of forward gears they offer (e.g., 5-speed) as a way of distinguishing between automatic or other available manual transmissions. Similarly, a 5-speed automatic transmission is often called a "5-speed automatic."
Manual transmissions are characterized by gear ratios that are selectable by locking chosen gear pairs to the output shaft inside the transmission. Conversely, most automatic transmissions feature epicyclic (planetary) gearing controlled by brake bands and/or clutch packs to select gear ratio. Automatic transmissions that permit the driver to by hand select the current gear are called Manumatics. A manual-style transmission operated by computer is often called an automatic transmission than an automatic.
The way a manual transmission works is that the flywheel is attached to the engine, the clutch disk is in between the pressure plate & the flywheel. When walking, the clutch disk spins with the flywheel. As the clutch pedal is depressed, the throw out bearing is pushed in, which makes the pressure plate cease applying pressure to the clutch disk. This makes it cease receiving power from the engine so that the gear can be shifted without damaging the transmission. When the clutch pedal is released, the clutch disk is allowed to start receiving power from the engine.
Contemporary automobile manual transmissions usually use to six forward gears & reverse gear, although automobile manual transmissions have been built with as few as & as lots of as eight gears. Transmission for heavy trucks & other heavy equipment usually have at least 9 gears so the transmission can offer both a variety of gears & close gear ratios to keep the engine walking in the power band. Some heavy vehicle transmissions have dozens of gears, but lots of are duplicates, introduced as an accident of combining gear sets, or introduced to simplify shifting. Some manuals are referred to by the number of forward gears they offer (e.g., 5-speed) as a way of distinguishing between automatic or other available manual transmissions. Similarly, a 5-speed automatic transmission is often called a "5-speed automatic."
Manual transmissions are characterized by gear ratios that are selectable by locking chosen gear pairs to the output shaft inside the transmission. Conversely, most automatic transmissions feature epicyclic (planetary) gearing controlled by brake bands and/or clutch packs to select gear ratio. Automatic transmissions that permit the driver to by hand select the current gear are called Manumatics. A manual-style transmission operated by computer is often called an automatic transmission than an automatic.
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