Early engines used pumps driven by the motion of the pistons.

In 1972, it acquired 150 more powerful German pumps driven by small gas turbines.

Oil pressure is provided by the trochoidal pump, driven by a steel spur gear off the crankshaft.

Diesel engines have turbochargers, which are pumps driven by exhaust gas.

A self-regulating pump, electrically driven, served it as a heart.

The engine was water-cooled with a circulating pump, driven by a gear from the cam shaft.

Both now typically operate on hydraulic power, which in turn is produced by a pump driven by belts that run off the driveshaft.

The accumulator was recharged after use by a pump driven by the steam engine.

Some vehicles may have the power steering pump driven by the camshaft.

Their compressors are pumps driven by engine belts that fill big tanks.