Patents by Inventor Dongliang Pu

Dongliang Pu has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Method and system for controlling engine speed and boom-type engineering machine
    Patent number: 9194139
    Abstract: The disclosure relates generally to the field of boom-type engineering machinery, which discloses particularly an engine speed control method used to control an output speed of an engine of a boom-type engineering machine during a boom action including: detecting a load pressure of a hydraulic system and a moving speed of a boom; determining a target speed of the engine according to the load pressure and the moving speed of the boom, by a central control unit; and sending, by the central control unit, the target speed of the engine to an engine control unit, and performing, by the engine control unit, a speed closed-loop adjustment according to a current speed value fed back by the engine, so that a current speed of the engine is consistent with the target speed of the engine. Further aspects are an engine speed control system and a boom-type engineering machine equipped therewith.
    Type: Grant
    Filed: December 26, 2013
    Date of Patent: November 24, 2015
    Assignees: HUNAN SANY INTELLIGENT CONTROL EQUIPMENT CO., LTD, SANY HEAVY INDUSTRY CO., LTD
    Inventors: Xiaogang Yi, Dongliang Pu, Qiang Liu
  • METHOD AND SYSTEM FOR CONTROLLING ENGINE SPEED AND BOOM-TYPE ENGINEERING MACHINE
    Publication number: 20140129096
    Abstract: The disclosure relates generally to the field of boom-type engineering machinery, which discloses particularly an engine speed control method used to control an output speed of an engine of a boom-type engineering machine during a boom action including: detecting a load pressure of a hydraulic system and a moving speed of a boom; determining a target speed of the engine according to the load pressure and the moving speed of the boom, by a central control unit; and sending, by the central control unit, the target speed of the engine to an engine control unit, and performing, by the engine control unit, a speed closed-loop adjustment according to a current speed value fed back by the engine, so that a current speed of the engine is consistent with the target speed of the engine. Further aspects are an engine speed control system and a boom-type engineering machine equipped therewith.
    Type: Application
    Filed: December 26, 2013
    Publication date: May 8, 2014
    Applicants: SANY HEAVY INDUSTRY CO., LTD., HUNAN SANY INTELLIGENT CONTROL EQUIPMENT CO., LTD.
    Inventors: Xiaogang Yi, Dongliang Pu, Qiang Liu