Provided is a high-pressure thermal fluid brake and engine energy recovery system, comprising a plurality of energy collection systems (1) and energy storage systems (2) which are connected to one another, and a control unit (19) connected to the energy collection systems (1) and the energy storage systems (2); the control unit (19) is connected to a vehicle controller, and at east reads and acquires the accelerator pedal position information, brake pedal position information, vehicle travel parameters, and cooling system parameters of a vehicle; the energy collection systems (1) recover vehicle's kinetic energy, engine's mechanical energy and engine's thermal energy, and stores the recovered energy into the energy storage systems (2), and the control unit (19) controls, according to the vehicle information read and acquired, the energy recovery and release of the energy collection systems (1) and the energy storage systems (2). The present invention can effectively recover and reuse vehicle's braking energy, engine's idle energy and engine's thermal energy, reduce the energy waste of a motor vehicle system, and achieve the purposes of energy saving, oil sav ing and emission reduction.

A turbocharged compressor system using an Organic Rankine Cycle system to recover waste heat from a compression process. The Organic Rankine Cycle system circulates an organic fluid through an evaporator, where the organic fluid vaporizes and is expanded in a turbine section of a turbocharger to drive a compressor section of the turbocharger. The organic fluid vapor is condensed in a condenser and is pumped to the evaporator once again for recirculation. The compressor section of the turbocharger pre-compresses a working fluid before entering an airend in a compression system. As the working fluid exits the airend, it may be delivered to the evaporator, where the waste heat from the working fluid evaporates the organic fluid flowing in the Organic Rankine Cycle system. The working fluid may also be circulated between intercoolers in multi-stage compressor systems.

A waste heat recovery device with a first heat medium side inlet; a first heat medium side outlet; a first heat medium flow path; a second heat medium side inlet; a second heat medium side outlet; a second heat medium flow path; a heat exchanger that exchanges heat between the first heat medium and second heat medium; an expansion tank in the first heat medium flow path; a bypass flow path that causes the first heat medium to flow and bypass the heat exchanger; and a mixer where the bypass flow path and first heat medium flow path merge together. The mixer is configured to adjust a ratio of a flow rate of the first heat medium in the bypass flow path and a flow rate of the first heat medium in the heat exchanger, such that the temperature of the first heat medium after merging approaches a predetermined temperature.

An integrated internal combustion engine and waste heat recovery system including an internal combustion engine, a system of exhaust gas conduits, a first heat exchanger in fluid communication with the exhaust gas conduits, a second heat exchanger in fluid communication with the exhaust gas conduits downstream of the first exchanger, a selective catalytic reduction unit positioned between the first and second heat exchangers, a waste heat recover system (WHR) and a mechanical connection. The WHR system includes a system of working fluid conduits in fluid communication with the first and second heat exchangers, an expander, a condenser, and a pump. The mechanical connection connects the internal combustion engine and the expander. The heat exchangers are configured to facilitate thermal communication between the working fluid and exhaust gas conduits. The working fluid and exhaust gas conduits include bypass conduits around the heat exchangers.

The heat exchanger comprises a first and a second stage (E1,E2), each having an inlet and an outlet of water, the second stage (E2) having an inlet and an outlet of oil, the first stage (E1) being provided with fuel inlet and outlet nozzles, selectively connected, in parallel, to the fuel supply to the engine (M). The inlet and outlet of water of the first stage (E1) are respectively connected to the outlet of the water radiator, by means of a cooling water circuit internal to the engine (M), and to the water inlet of the second stage (E2). The water outlet of the second stage (E2) is connected to the inlet of a water radiator, and the inlet and outlet of oil in the second stage (E2) are connected in series to a lubricant oil circuit internal to the engine (M).

A system for warming an engine. The system includes an engine coolant system that directs warm engine coolant to the engine to heat the engine. A heat pump system warms the engine coolant.

A method includes installing a CHP system to be operated by an operator. The operator becomes qualified as a market participant in a wholesale electricity market. An electrical output generated from the CHP system is connected to a first conductive path, the first conductive path operatively conducting power and energy to a grid for sale into the wholesale electricity market. Waste heat generated from the CHP system is utilized to provide one of a product and a process. An efficiency of the waste heat and an electrical efficiency of the electrical output are combined to attain an overall CHP system efficiency of 60 percent or greater.

A method includes installing a CHP system to be operated by an operator. The operator becomes qualified as a market participant in a wholesale electricity market. An electrical output generated from the CHP system is connected to a first conductive path, the first conductive path operatively conducting power and energy to a grid for sale into the wholesale electricity market. Waste heat generated from the CHP system is utilized to provide one of a product and a process. An efficiency of the waste heat and an electrical efficiency of the electrical output are combined to attain an overall CHP system efficiency of 60 percent or greater.

Methods and systems are provided for controlling the temperature and ratio of gases within a gas mixing tank reservoir and selectively charging/discharging gases from the reservoir to one or both of an intake system or an exhaust system. In one example, a method (or system) may include storing exhaust gas and/or compressed intake air into a gas mixing reservoir, and increasing or decreasing flow of coolant to the reservoir based on engine operating conditions. The stored gases may be discharged to an intake system and/or an exhaust system based on requests from a controller, and coolant flow to the reservoir may be adjusted based on the composition of the gases stored within the reservoir.

In a waste heat recovery device comprising a Rankine cycle in which working fluid circulates and a cooling circuit in which coolant water of an engine circulates, a heat source of a heater of the Rankine cycle is waste heat of the engine. A condenser of the Rankine cycle is configured to exchange heat between the working fluid and coolant water of a third coolant water circuit configured to circulate coolant water having passed through a radiator without passing through the engine.