"speed is increased" is a correct and usable phrase in written English.
Example: In order to reach the finish line first, the runner must make sure that their speed is increased during the final stretch of the race.
When the horse has become accustomed to this, its speed is increased.
When at rest or steaming slowly, a hydrofoil ship supports its weight by its own buoyance, but as speed is increased, the foils carry progressively more weight until the ship's hull is raised clear of the water.
Most devices employed to change the ratio of the speed of the engine to the speed of the driving wheels multiply the engine torque by the same factor by which the engine speed is increased.
As speed is increased the seat is raised slightly from the saddle, with the back straight and the trunk and hands forward, the lower thighs and the knees taking the weight of the body and gripping the saddle, leaving the legs from the knees down free for impulsion.
As ΔT increases in a negative direction, the performance speed is increased.
The moving speed is increased in accordance with the reduction of steps in the process.
Snort drops packets at an increasing rate as the link speed is increased.
The vibration divergent speed is increased along with an increase in the freeplay angle.
However, the heating speed is increased using another reciprocating intermittent heating method (RIHM).
As translation speed is increased, however, the cable arch becomes tensioned and stable.
As beam speed is increased, first ion-acoustic and then slow electron-acoustic solitons disappear.
