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An energy recovery and reuse system and its control strategy for a hybrid loader

An energy recovery and energy control technology, applied in the field of hydraulic hybrid power, can solve the problems of low efficiency, high manufacturing cost and poor economy of hydraulic transmission system, and achieve the advantages of improving braking safety, ensuring response sensitivity and reducing transmission ratio. Effect

Active Publication Date: 2022-03-01
YANSHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the hydraulic transmission system of the hydraulic mechanical loader has low efficiency, poor economy, complicated structure and high manufacturing cost.

Method used

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  • An energy recovery and reuse system and its control strategy for a hybrid loader
  • An energy recovery and reuse system and its control strategy for a hybrid loader
  • An energy recovery and reuse system and its control strategy for a hybrid loader

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Embodiment Construction

[0045] In order to make the purposes, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments These are some embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0046] like figure 1 As shown, this embodiment provides an energy recovery and reuse system for a hybrid loader and a system such as image 3 As shown in the control strategy, the system includes: engine 23, torque converter 19, gearbox 18, torque coupler 17, transfer case 16, variable hydraulic pump / motor 11, energy control valve ...

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Abstract

The invention provides an energy recovery and reuse system of a hybrid power loader and a control strategy thereof. The output end of the engine of the present invention is connected with the steering oil pump and the working oil pump through the constant mesh gear, and is also connected with the first clutch and the transfer case, and the transfer case is connected with the front transmission shaft and the front drive axle through the first output end of the torque coupler , connected to the second clutch and the variable hydraulic pump / motor through the second output end of the torque coupler. One end of the oil pump is connected with the low-pressure oil tank, and the other end is connected with the energy control valve group. The invention can realize the recovery of the boom potential energy and braking energy through the energy control valve group system, and the steering and working pumps are actively charged when the loader is running with low load and the engine is idling. The invention has high energy recovery and utilization rate, high system efficiency and sensitive response of the energy control valve group.

Description

technical field [0001] The invention relates to the field of hydraulic hybrid power, in particular to an energy recovery and reuse system of a hybrid power loader and a control strategy thereof. Background technique [0002] Loaders are the main mechanical equipment for modern engineering construction and military engineering construction, and occupy an important position in the national economy and modernization construction. Its working environment is relatively harsh, the load changes greatly, and the engine power cannot be fully utilized. In this way, its fuel utilization rate and comprehensive working performance are improved, making it more efficient, energy-saving, durable and comfortable at work. important. [0003] Due to its excellent automatic adaptability, passability, service life and operating comfort, hydraulic mechanical loaders occupy an absolute dominant position in the current loader market. However, the hydraulic transmission system of the hydromechanic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02F9/22
CPCE02F9/2217
Inventor 杨树军李路兴李学良穆俊宇韩斌庞雨马贺龙
Owner YANSHAN UNIV
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