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Hybrid power loader energy recovery and recycling system and control strategy thereof

An energy recovery and hybrid technology, applied in the field of hydraulic hybrid, can solve the problems of low efficiency, high manufacturing cost and poor economy of the hydraulic transmission system, so as to improve the energy utilization rate, ensure the braking safety, and improve the energy density. Effect

Active Publication Date: 2020-05-19
YANSHAN UNIV
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  • 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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  • Hybrid power loader energy recovery and recycling system and control strategy thereof
  • Hybrid power loader energy recovery and recycling system and control strategy thereof
  • Hybrid power loader energy recovery and recycling system and control strategy thereof

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Embodiment Construction

[0045] In order to make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of the embodiments of the present invention, not all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.

[0046] Such as figure 1 As shown, this embodiment provides an energy recovery and reuse system for a hybrid loader and such as image 3 As shown in the control strategy, the system includes: engine 23, hydraulic 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 a hybrid power loader energy recovery and recycling system and a control strategy thereof. According to the system, the output end of an engine is connected with a steering oilpump and a working oil pump through a normally engaged gear, and is also connected with a first clutch and a transfer case through the normally engaged gear; the transfer case is connected with a front transmission shaft and a front drive axle through the first output end of a torque coupler, and is connected with a second clutch and a variable hydraulic pump / motor through the second output end ofthe torque coupler; one end of the variable hydraulic pump / motor is connected with a low-pressure oil tank, and the other end of the variable hydraulic pump / motor is sequentially connected with an energy control valve group and a high-pressure energy accumulator; and one ends of the steering oil pump and the working oil pump are connected with the low-pressure oil tank, and the other ends of thesteering oil pump and the working oil pump are connected with the energy control valve group. According to the system, the recovery of the potential energy of a movable arm and the braking energy canbe realized through an energy control valve group system, and the steering oil pump and the working oil pump actively charges the energy when a loader runs at a low load and the engine works at an idle speed. The system and the control strategy thereof have the advantages of 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 its control strategy. 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 work 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 hydraulic mechanical loader h...

Claims

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Application Information

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Patent Type & Authority Applications(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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