Gards, Inc., of Bellevue, Wash, has introduced a new gearless hydraulic marine propulsion system it says reduces noise and load but gives operators the flexibility of a geared system: continuous ...

Bing Wang from Tsinghua University proposed a new concept for detonative propulsion, called the Ram-Rotor Detonation Engine, ...

According to the EPA the "hydraulic hybrid powertrain and a unique hydraulic hybrid propulsion system integrated with the drive axle" can reduce fuel consumption in the brown truck by 1,000 ...