The hydrostatic transmission transmits energy using hydraulic fluid. The usual transmission has two hydraulic devices; one working as a variable displacement pump and the other working as a motor connected by hydraulic lines.
How does a hydrostatic drive work?
Hydrostatic Operation
Usually powered by a standard engine, the hydrostatic pump uses pressurized oil to move pistons in the hydrostatic drive system. The movement of the pistons transfers power to the hydrostatic motors, which then engage the drive wheels on your lawn mower.
What is a hydrostatic drive?
A hydrostatic drive is a type of transmission that is often used on heavy equipment. Hydrostatic transmissions use oil pressure from a hydraulic pump to power hydraulic motors.