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Device and method for controlling throttle of electronic fuel injection diesel engine for excavator

A technology of throttle control and diesel engine, applied in electrical control, engine control, fuel injection control, etc., can solve the problems of high fuel consumption and poor energy saving effect, achieve low fuel consumption, improve fuel economy and operation stability, and reduce noise Effect

Active Publication Date: 2012-03-21
XCMG EXCAVATOR MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The hard characteristic control of the throttle of the EFI diesel engine is mainly reflected in the fact that when the excavator is working, the controller ECU of the diesel engine adjusts the speed of the diesel engine under heavy load or light load, so that it always automatically returns to the speed position set by the throttle knob. , the speed sensing control function of the main controller of the excavator does not work much, which makes the fuel consumption of the whole machine very high and the energy saving effect is not good

Method used

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  • Device and method for controlling throttle of electronic fuel injection diesel engine for excavator
  • Device and method for controlling throttle of electronic fuel injection diesel engine for excavator
  • Device and method for controlling throttle of electronic fuel injection diesel engine for excavator

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Embodiment Construction

[0020] The present invention will be further described below in conjunction with the drawings.

[0021] Such as figure 1 As shown, the excavator’s electrical injection diesel engine throttle control circuit includes the main controller 6, diesel engine ECU3, electronic monitor 4, throttle knob 5, main pump pressure sensor one 7, main pump pressure sensor two 8, pilot pressure sensor 9 and main Pump electric proportional pressure reducing valve 10.

[0022] The main pump 1 is connected to the diesel engine 2, the input port 1 of the main controller 6 is connected to the operating throttle knob 5, and the main controller 6 is connected to the diesel engine ECU3 through the CAN bus. The CANH port of the main controller 6 is connected to the CANH port of the diesel engine ECU3. The electronic monitor 4 CANH port is connected, the CANL port of the main controller 6 is connected with the CANL port of the diesel engine ECU3, the electronic monitor 4 CANL port, the main controller 6 analo...

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Abstract

The invention discloses a device and method for controlling a throttle of an electronic fuel injection diesel engine for an excavator, belonging to the technical field of the control of the throttle of the engineering machinery diesel engine. The device comprises a main pump, a diesel engine, a diesel engine ECU, an electronic monitor, a throttle knob, a main controller, a first main pump pressure sensor, a second main pump pressure sensor, a pilot pressure sensor and a main pump electric proportional pressure reducing valve. The device is used to realize the operation procedure of the methodfor controlling the throttle. Due to the adoption of the device and the method, the consumption of diesel can be effectively reduced, the power match of the diesel engine of the excavator and the main pump can be optimum, the noise of the excavator can be reduced, the operation stability can be improved, and the high work efficiency can be realized..

Description

Technical field [0001] The invention relates to an engineering machinery diesel engine throttle control device and method, in particular to an excavator electrical injection diesel engine throttle control device and method, and belongs to the technical field of engineering machinery diesel engine throttle control. Background technique [0002] At present, for most domestic excavator manufacturers, the power matching of mechanical diesel engine and hydraulic main pump has a relatively mature control method, and its energy-saving effect is relatively close to that of foreign excavators with the same configuration system. Since the 1990s, the energy crisis and environmental pollution have made people put forward higher requirements for the economy and exhaust emissions of diesel engines. Traditional mechanically controlled fuel injection systems can no longer meet this new requirement. Due to the characteristics of high injection pressure, high control accuracy, fast response speed...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E02F9/20F02D41/14
Inventor 杨梅李宗张宏刘立祥孟凡建刘凯李亚东
Owner XCMG EXCAVATOR MACHINERY
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