HYDRAULIC EXCAVATOR CONTROL SYSTEM AND METHOD - XUZHOU XCMG EXCAVATOR MACHINERY CO LTD

Title:

HYDRAULIC EXCAVATOR CONTROL SYSTEM AND METHOD

Document Type and Number:

WIPO Patent Application WO/2021/046736

Kind Code:

A1

Abstract:

Disclosed are a control system and method for a hydraulic excavator. The method comprises: a controller collecting a fuel path pressure signal of a hydraulic excavator, and calculating the desired main pump power according to the fuel path pressure signal; the controller sending the desired main pump power to an ECM; and the ECM firstly adjusting the engine fuel-injection quantity according to the desired main pump power, and the controller then adjusting the main pump power according to the desired main pump power. According to the present invention, the loading response time of the engine is greatly shortened, the overall working efficiency is improved, and the problem of the emission of black smoke when at an idle speed is solved, thereby further reducing the idling speed of the engine in order to reduce the fuel consumption.

Inventors:

SONG ZHIKE (CN)
GENG JIAWEN (CN)
NIU DONGDONG (CN)
LIU LIXIANG (CN)
WANG LU (CN)
WANG XUTONG (CN)
XING ZECHENG (CN)
SONG JI (CN)
WEI HONGMIN (CN)
WANG QING (CN)
BIAN QINGRONG (CN)
LIN XIANGWEI (CN)
LV CHUANWEI (CN)
WANG DING (CN)

Application Number:

PCT/CN2019/105276

Publication Date:

March 18, 2021

Filing Date:

September 11, 2019

Export Citation:

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Assignee:

XUZHOU XCMG EXCAVATOR MACHINERY CO LTD (CN)

International Classes:

E02F9/22

Foreign References:

CN104074225A	2014-10-01
CN107044147A	2017-08-15
CN104405002A	2015-03-11
CN106869222A	2017-06-20
EP0812965A1	1997-12-17
US20080264499A1	2008-10-30

Other References: