Đang chuẩn bị liên kết để tải về tài liệu:
GEARBOXES IN AUTOMOBILES

Không đóng trình duyệt đến khi xuất hiện nút TẢI XUỐNG Tải xuống

A transmission or gearbox provides speed and torque conversions from a rotating power source to another device using gear ratios, including for a motor vehicle partly because of the limitations of internal combustion engines.Usually found near motors of some sort, gearboxes are used to reduce the load on the motor by using the motor's own momentum to keep it turning. | GEARBOXES IN AUTOMOBILES By Sanket Chandrashekhar Totewar AND Shashank Maikhuri B.E. Mechanical Sandwich Vishwakarma Institute of Technology, Pune – 37. A transmission or gearbox provides speed and torque conversions from a rotating power source to another device using gear ratios, including for a motor vehicle partly because of the limitations of internal combustion engines. Usually found near motors of some sort, gearboxes are used to reduce the load on the motor by using the motor's own momentum to keep it turning. Once a motor has reached a number of revolutions per minute, it is advisable for the operator to increase the gear, to drop the revolutions on the motor, yet still keep the same amount of power created. This reduces wear on the engine, allows more control, and allows greater speeds. Early transmissions included the right-angle drives and other gearing in windmills, horse-powered devices, and steam engines, in support of pumping, milling, and hoisting. Most modern . | GEARBOXES IN AUTOMOBILES By Sanket Chandrashekhar Totewar AND Shashank Maikhuri B.E. Mechanical Sandwich Vishwakarma Institute of Technology, Pune – 37. A transmission or gearbox provides speed and torque conversions from a rotating power source to another device using gear ratios, including for a motor vehicle partly because of the limitations of internal combustion engines. Usually found near motors of some sort, gearboxes are used to reduce the load on the motor by using the motor's own momentum to keep it turning. Once a motor has reached a number of revolutions per minute, it is advisable for the operator to increase the gear, to drop the revolutions on the motor, yet still keep the same amount of power created. This reduces wear on the engine, allows more control, and allows greater speeds. Early transmissions included the right-angle drives and other gearing in windmills, horse-powered devices, and steam engines, in support of pumping, milling, and hoisting. Most modern gearboxes are used to increase torque while reducing the speed of a prime mover output shaft (e.g. a motor drive shaft). A gearbox can be setup to do the opposite and provide an increase in shaft speed with a reduction of torque. As the output shaft of a gearbox rotates at slower rate than the input shaft, and this reduction in speed will produce a mechanical advantage, causing an increase in torque. Some of the simplest gearboxes merely change the physical direction in which power is transmitted. Many typical automobile transmissions include the ability to select one of several different gear ratios. In this case, most of the gear ratios (often simply called "gears") are used to slow down the output speed of the engine and increase torque. However, the highest gears may be "overdrive" types that increase the output speed. In practice, the main use of a Gearbox is to act as a reduction gear. These can be variable or non-variable, depending on the application. This not only decreases wear on .