[2017.05.29] Random Gallery Life & Vehicles World & China
Random Gallery Life & Vehicles World & China
RPM: revolutions per minute
ut simply, RPM is a way to measure how many times per minute components in the engine rotate, in particular how fast the crankshaft is spinning. The tachometer measures RPM in the thousands, so if you see the needle at the number 4, that would be 4,000 rpm.