The present invention relates to an apparatus and method for controlling a construction machine. An apparatus for controlling a construction machine according to an embodiment of the present invention may compare a fuel efficiency gain expected when engine revolutions per minute (RPM) is decreased with a fuel efficiency gain expected when a current torque curve is changed to a torque curve corresponding to a condition in which auxiliary power is provided and selected from among the plurality of torque curves and then the latter torque curve is selectively applied, based on the fuel efficiency map, and may control an engine by means of a method by which a larger fuel efficiency gain is expected.

The present invention relates to an apparatus and method for controlling a construction machine. An apparatus for controlling a construction machine according to an embodiment of the present invention may compare a fuel efficiency gain expected when engine revolutions per minute (RPM) is decreased with a fuel efficiency gain expected when a current torque curve is changed to a torque curve corresponding to a condition in which auxiliary power is provided and selected from among the plurality of torque curves and then the latter torque curve is selectively applied, based on the fuel efficiency map, and may control an engine by means of a method by which a larger fuel efficiency gain is expected.

A system for producing drive energy includes a control unit, and an intensifier that receives water from a water source and oil from an oil source, pressurizes the oil, and transfers pressurized oil. The system also includes a compression cylinder that receives oil from the oil source and the pressurized oil from the intensifier so that oil collected in the compression cylinder is pressurized to a predetermined pressure, and that transfers the oil at the predetermined pressure. A control valve is provided for controlling the oil to be received by the compression cylinder from the oil source and for controlling the oil transferred at the predetermined pressure. The system includes a hydraulic motor that receives the oil transferred at the predetermined pressure, and utilizes the predetermined pressure to drive the hydraulic motor. The hydraulic motor turns a generator so that the generator produces energy without the expenditure of fossil fuel.

A housing for a motor or compressor has an elongate crankcase with two end surfaces. At least one cylinder chamber is provided in which a piston is caused to perform a movement by rotation of the crankshaft. The internal diameter of the crankcase narrows monotonously from the first end surface to the second end surface. A crankcase shaped in this way can be manufactured particularly easily by virtue of the casting being performed around a shaping mandrel. A shaping mandrel of this type must likewise narrow monotonously in order that, after the casting has been performed around it, the shaping mandrel can be pulled out of the housing at a first end. By way of the shaping of the crankcase, it is possible for the housing to be of unipartite and at the same time very compact construction.

The Buoyant Synchrony Actuated Inductance AC Generator is a Wave Energy Converter using marine energy from Wave Power and converting it to Electricity. The entire Converter comprises of numerous sub-generators operating independently within its self.

A device for generating electrical energy from mechanical motion includes a surface float and at least one force modifier disposed at least partially within the interior of the surface float, the force modifier to receive an input force at a pumping cylinder and apply a modified force to a generator through a driving cylinder. The pumping cylinder or the driving cylinder is a tandem cylinder.

A device for generating electrical energy from mechanical motion includes a surface float and at least one force modifier disposed at least partially within the interior of the surface float, the force modifier to receive an input force at a pumping cylinder and apply a modified force to a generator through a driving cylinder. The pumping cylinder or the driving cylinder is a tandem cylinder.

A wave energy isolation device includes a fixed displacement hydraulic motor and a variable displacement hydraulic pump. The variable displacement hydraulic pump outputs a working fluid to the fixed displacement hydraulic motor. The variable displacement hydraulic pump changes an output displacement of the working fluid according to a control parameter.

An energy conversion system is dedicated to pressurizing a flow using a constant volume pressure source. In some embodiments, the constant volume pressure source is based on the pressure increase associated with a phase conversion in a constant volume enclosure due to heating up of the entrapped matter or exposing a mass to the gravitational field.

A thermal energy storage system comprising a working fluid to store and transfer thermal energy between a heat source and a thermal load and a vessel to store the working fluid. The vessel has an interior region and a floating separator piston in the interior region to separate a hot portion from a cold portion of the working fluid. There is a first manifold thermally coupled to an output of the heat source and to an input of the thermal load and fluidly coupled to the interior region of the vessel and a second manifold thermally coupled to an input of the heat source and an output of the thermal load and fluidly coupled to the interior region of the vessel. There is a controller configured to maintain the working fluid in a liquid state.