What does the maximum torque speed of 1500-4500 mean?

[SanKyle]

The maximum torque speed of 1500-4500 means that the engine will produce its maximum torque within the speed range of 1500 to 4500 revolutions per minute. Maximum torque refers to the highest torque value across the entire engine speed range, typically measured in N·m (Newton meters). The engine speed at which this maximum torque occurs is called the maximum torque speed, measured in rpm (revolutions per minute). Relevant information about maximum torque speed is as follows: 1. Torque is an important parameter of engine performance, representing the average moment output from the crankshaft during engine operation. 2. Maximum torque generally occurs in the medium to low speed range of the engine, and tends to decrease as the speed increases.