초록 ▼

A controlled direct drive engine efficiency uses positive-displacement power produced from a thermal energy source (or sources), which may include combustion energy. Engine power production is from a plurality of cylinders appropriately controlled by a hydraulic drive unit to add to or subtract from

A controlled direct drive engine efficiency uses positive-displacement power produced from a thermal energy source (or sources), which may include combustion energy. Engine power production is from a plurality of cylinders appropriately controlled by a hydraulic drive unit to add to or subtract from such power output to adjust cyclic variations, thus producing a desired velocity profile for a piston (or other mover) in a fluid-displacement cylinder that is being used to effect pumping (or compressing) of liquids, gases, or vapors. The overall system is particularly suited to use a Modified Brayton thermodynamic cycle where the power output is delivered through a common rod to a positive displacement fluid pumping or compressing device. Interconnected with that common rod is a double-acting hydraulic cylinder which is operated in conjunction with a rotary, variable volume hydraulic motor/pump to effect the desired adjustment. By using a plurality of power outputs from such a Modified Brayton cycle (or other cycle), which outputs are phased to operate complementary to one another, power is transferred between individual power outputs to efficiently and smoothly operate a plurality of fluid-displacement devices.

대표청구항 ▼

1. A power producing system particularly suited for positive displacement fluid pumping, which system comprises:first means for producing reciprocating power from a thermal energy source which may include combustion energy, positive displacement fluid-displacement means including piston means for pu

1. A power producing system particularly suited for positive displacement fluid pumping, which system comprises:first means for producing reciprocating power from a thermal energy source which may include combustion energy, positive displacement fluid-displacement means including piston means for pumping/compressing fluid in a cylinder, which piston means is driven by said first means, and a hydraulic drive unit mechanically connected to said piston means for controlling said reciprocating power from said first means to achieve efficient operation by moving said piston means with a desired velocity profile.