donated the Greens King IV mower, which is a 31-horsepower, front-wheel drive mower with three sets ... less energy is required to push the hydraulic fluid through the system, making it more efficient ...

Their set-up, you'll remember, uses a conventional engine to pressurize a hydraulic system to send power to the wheels which is said by the company to reduce fuel consumption by more than half and ...

Cummins Inc. and Liberty Energy Inc. have announced that the industry’s first natural gas, variable-speed, large displacement engine to power Liberty’s digiPrime hydraulic fracturing platform will be ...