Why does the torque of the motor increase when the gear is changed?
Physical principleTorque, as well as power, is one of the main indices of automotive engines. It is reflected in automobile performance, including acceleration, climbing ability, etc.. Its accurate definition is: piston reciprocating movement in the cylinder, reciprocating once will do a certain amount of work, its international standard unit is Newton. The work done at the distance of each unit is torque. Popular point of view, torque is an important measure of the quality of an automobile engine, the torque of a car is proportional to the power of the engine. For a popular example, make a less appropriate metaphor, like the human body when it is moving, power is like the durability of the body, and torque is the explosive force of the body. For domestic cars, the greater the torque, the better the acceleration; for off-road vehicles, the greater the torque, the greater the slope; for trucks, the greater the torque, the greater the weight of the pull.
Torque is the force that causes an object to turn. The engine torque is the torque that the engine produces from the crankshaft end. Under the condition of fixed power, it is inversely related to the engine speed. The faster the speed, the smaller the torque, the greater the reverse, which reflects the car's load capacity in a certain range.Representation methodSaid the engine torque is nm (N.m). As with power, it is indicated at the same time that the maximum output torque of the engine is indicated, and the speed per minute (r/min) is also marked. The maximum torque usually occurs in the middle and low speed ranges of engine. As the speed increases, the torque will decrease.
The progress of a car must depend on the torque that the engine exerts. What is called torque is called torque in physics.
Torque formula calculationOverall, the driving force can be calculated by the following formula: the formula of automobile driving force torque transmission gear ratio = * * * final gear ratio, the mechanical efficiency of the tire radius (unit: m)In simple terms, power P= power W, time t power W= force F * s distanceSo, P=F x s/t=F * speed V, here's V is the line speed,In the engine, the crankshaft's line speed = the angular speed of the crankshaft, Omega crankshaft radius r,Substituting the formula is: power P=, force F * radius, R * angular speed, omega;And torque = force F * radius rObtained: power P= torque x angular speed omega (angular speed unit is radian / sec, in radians, a PI represents 180 degrees)So the power of the engine can be calculated from torque and speed
