359 results about "Energy regeneration" patented technology

In order to provide a construction machine by which energy regeneration can be performed reliably and battery and electrical power generator can be miniaturized, a construction machine has an engine, a hydraulic pump driven by the engine, and an actuator driven by discharge oil from the hydraulic pump, and a regenerative motor which rotates by return oil from the actuator is connected to the rotation shaft of the hydraulic pump. The hydraulic pump is driven by the engine and the regenerative motor when drive torque necessary in the hydraulic pump is larger than output torque generated by operation of the regenerative motor. Meanwhile, the hydraulic pump is driven by the regenerative motor when the drive torque of the hydraulic pump is smaller than output torque of the regenerative motor, and an electrical power generator connected to the rotation shaft of the hydraulic pump is operated to generate electricity by excess torque which has not been energy-regenerated in the hydraulic pump so that this generated electrical power is charged in a battery.

A fluid drive system that can be used to drive a vehicle and has energy regeneration and storage capabilities. The fluid drive system includes an electrical energy supply source mounted on the vehicle, at least one electrical motor electrically connected to the electrical supply source, and a hydraulic pump driven that may be of the variable displacement type by the electrical motor. The fluid drive system may also include a low pressure hydraulic fluid supply tank supplying fluid to the hydraulic pump, at least one pneumatically charged accumulator tank for storing pressurized hydraulic fluid, a combination hydraulic motor and pump that may also be of the variable displacement type being alternately driven by the hydraulic pump and the pneumatically charged accumulator tank; and an electrical regeneration system for regenerating the electrical energy supply. The electrical regeneration system may be powered by hydraulic fluid from the combination electrical motor and pump. The combination hydraulic motor and pump propels the vehicle during acceleration and speed maintaining operations and may also serves as a braking mechanism during deceleration of the vehicle. The combination hydraulic motor and pump may also pump hydraulic fluid into the pneumatically charged accumulator tank during at least a portion of the time that the vehicle is decelerating. The combination hydraulic motor and pump may further pump hydraulic fluid for powering the electrical regeneration system when the pneumatically charged accumulator tank is fully pressurized. The electrical regeneration system also has the ability to recharge the electrical energy supply while the vehicle is stopped using stored recovered kinetic energy.

A hybrid vehicle comprises an engine 2, a motor generator 4, a torque converter 6 with a lock-up clutch 5, and a ratio-change mechanism 7. A control system for the hybrid vehicle comprises a rotational sensor 22, which detects the slip ratio of the torque converter, and a hydraulic control valve 12, which controls the engagement of the lock-up clutch. While the vehicle is moving along with the accelerator pedal being released from its stepped down condition, a driving force from the wheels is transmitted to the motor generator 4 for energy regeneration. If the slip ratio of the torque converter is equal to or smaller than a first threshold value, then only the lock-up clutch is controlled into engagement. However, if the slip ratio is between the first threshold value and a second threshold value, then additionally the motor generator is controlled in cooperative operation.

The invention discloses an independent electrohydraulic load sensing energy regeneration hydraulic system of an actuator port of an engineering machine. An oil outlet of a variable pump is connected with an oil inlet of a proportional relief valve, a first pressure sensor, an oil inlet of a first proportional directional valve, and an oil inlet of a second proportional directional valve respectively. An oil outlet of the first proportional directional valve is connected with a second pressure sensor, the oil inlet of a proportional throttle valve and a rodless cavity of a hydraulic cylinder respectively. An oil outlet of the second proportional directional valve is connected with an oil outlet of the proportional throttle valve, a third pressure sensor and a rod cavity of the hydraulic cylinder. A Controller is in electrical connection with a control handle, the variable pump, the proportional relief valve, two proportional directional valves, the proportional throttle valve and three pressure sensors. The system adopts the pressure sensors to detect working conditions, selects control policies according to the working conditions, reduces energy loss in flow restriction and realizes overload energy regeneration under the control of an actuator. Speed and energy-conservation control is realized through the combination of pump control and valve control.

The invention discloses a mixing power energy regeneration brake and control method, which includes the determination of feasible conditions of the whole vehicle energy source recovery, determination of the energy source recovery stage, the calculation of the electric brake force when the energy source is recovered, the distribution of the brake force between the mechanical brake and the electric brake, and the system safety protection control of the energy source recovery of the mixing power vehicle. The invention also discloses an energy source regeneration brake system implementing the mixing power energy source regeneration brake control method; the system includes a 144V high-voltage nickel-hydrogen power battery, a 1.3-litre gas engine, a mixing power whole vehicle control unit, a battery control unit, a motor, a brake system controller and a 5-speed AMT gearbox. The secondary control optimization of the energy source recovery for the whole vehicle system with the energy source recovery control scheme ensures the recovery of the whole vehicle energy source to be more reasonable and efficient.

The invention relates to a manufacturing technique for energy regeneration and non-waste comprehensive utilization of municipal domestic waste, which is characterized by comprising the steps of waste classification, pretreatment and treatment of nonmetallic inorganic substances, schizolysis, filtration and reforming of organic substances, synthesis of fuel oil and treatment of organic substance byproducts. The manufacturing technique completely treats waste, has no secondary pollution during the whole treatment, and really realizes complete conversion and utilization of the waste. When the technology is used for treating organic substance waste and so on, including organic substance parts of the municipal domestic waste and various animal and plant waste, not only the environmental problem caused by the municipal domestic waste and the waste problem of the waste can be solved but also energy and slow release fertilizer which returns to earth can be efficiently generated, so that green circulation of renewable energy resources is realized. The applied proposal has reasonable energy consumption in the whole process, has no pollution, has controllable products, high output value and stable and reliable sources of raw materials, and realizes sustainable development.

A hybrid drive apparatus is provided and enables efficient energy regeneration by the motor generator by separating the power transmission path through which the driving force from the engine is transmitted, from the power transmission path between the motor generator and the drive wheels, and also makes it possible to achieve a variety of driving modes while improving power transmission efficiency. In a hybrid drive apparatus (1) having an engine (10), a motor generator (20), and a planetary gear mechanism (30) in which the output shaft (21) of the motor generator (20) is coupled to a sun gear (S), the output shaft (11) of the engine (10) is coupled to a ring gear (R), and the input shaft (42) of a continuously variable transmission mechanism (40) is coupled to a carrier (C), the hybrid drive apparatus (1) includes a first clutch (C1) that can switch engagement / disengagement between the output shaft (11) of the engine 11 and the ring gear (R), a second clutch (C2) that can switch engagement / disengagement between the carrier (C) and the ring gear (R), and a third clutch (C3) that can switch engagement / disengagement on the input shaft (42) of the transmission mechanism (40).

An energy regeneration device of a drive-by-wire braking system comprises a gearbox, an oil tank, an electromagnetic clutch, a hydraulic oil pump / motor, an electromagnetic distributing valve, a first electromagnetic reversing valve, a high-pressure energy accumulator, a second electromagnetic reversing valve and a low-pressure energy accumulator. A hydraulic brake is additionally arranged on a brake disc of each wheel, and an increasing gear mechanism is additionally mounted on an output shaft of the gearbox. By the aid of a method for accumulating and releasing braking energy, accumulated energy of the high-pressure energy accumulator can be released when an automobile starts and accelerates, a starting performance and an acceleration performance of the automobile are improved, accumulated energy in the low-pressure energy accumulator can also be directly applied to the wheels during braking and used with a braking motor of the drive-by-wire braking system to realize braking of the automobile, and braking energy recycle efficiency is improved. When the drive-by-wire braking system fails and cannot work normally, the device can be used as an emergency braking system, and the accumulated energy in the energy accumulators is used for realizing parking braking of the automobile. The energy regeneration device is particularly suitable for pure electric automobiles.

The invention provides a multilevel-control free-polyradical biomass-gasification energy regeneration system, which can transform extensive biomass and carbon-containing raw materials, including energy crops, agriculture-forestry byproducts, organic waste, industrial and dangerous waste and the like, into high-grade energy. The system is designed for continuous operation. Gasification comprises the following steps of performing pretreatment, performing pyrolysis, transforming carbon, fusing ash, cracking tar, reforming syngas and utilizing waste heat, wherein the steps are precisely controlled one by one and integrated so as to achieve optimum; moisture from the pretreatment of the materials is led into a carbon-transforming unit so as to realize oxygen-free pyrolysis; gasification gas is in contact with a large number of free polyradicals in a free-polyradical reaction-accelerating unit; and the obtained product is purified and then enters downstream application, such as power generation, hydrogen production and biomass methanol / ethanol production. The system has the advantages of needing no auxiliary fuel, maximizing gasification efficiency and thoroughly cracking tar and clearing pollutants, and is an upstream technique for the application of biomass renewable energy. As energy utilization meets all strict environmental protection standards, the system is also an energy-saving environment-friendly technique for non-incineration harmless treatment.

The present invention discloses an auxiliary energy regeneration power system for electric automobile, and the auxiliary energy regeneration power system is increased on the basis of available main power supply. The main power supply provides energy source for the motor to run and the auxiliary power system provides energy source for the auxiliary equipment in the voltage selected based on that of the auxiliary equipment. On the basis of feedback of the main power supply, one more control signal is increased for the control of the auxiliary power system so that the microprocessor can control the main power supply and the auxiliary power system simultaneously. The auxiliary equipment is powered directly without DC / DC voltage step-down. Because of the relatively small power consumption of the auxiliary equipment, the regeneration brake is utilized for charging the auxiliary power system without additional charger is provided.