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Variable-power running control device for self-propelled harvester

A technology of operation control and harvester, applied in engine control, electrical control, fuel injection control, etc., can solve the problem of high fuel consumption rate, achieve the effect of uniform wear, balanced operation, and easy installation

Inactive Publication Date: 2010-04-21
潍坊威度电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

That is to say, the engine is working in the low-load area at this time, showing the phenomenon of "big horse and small cart", and the fuel consumption rate is very high.

Method used

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  • Variable-power running control device for self-propelled harvester
  • Variable-power running control device for self-propelled harvester
  • Variable-power running control device for self-propelled harvester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] like figure 1 As shown, the engine of the self-propelled harvester has a mechanical fuel injection system. When the camshaft 4 rotates, each fuel injection pump sub-pump 6 is driven to work. A high-pressure oil pipe 8 is arranged between the fuel injection pump sub-pump 6 and the fuel injection nozzle 9 . Cylinder sensor 3 is installed on the shaft end of camshaft 4 or other parts of the engine, and the installation and position of cylinder sensor 3 are well known to those of ordinary skill in the art, and its function is to detect the cylinder dead center position signal of the engine and rotational speed signals, and deliver these signals to the microprocessor 2. An oil return bypass 10 is provided between the high-pressure oil pipe 8 and the fuel tank 7 of the engine, and an electromagnetic switch valve 5 electrically connected with the microprocessor 2 is provided on the oil return bypass 10; the signal input end of the microprocessor 2 is also connected with the P...

Embodiment 2

[0030] like image 3 As shown, the engine of the self-propelled harvester has an electronically controlled fuel injection system, and the electronically controlled fuel injection system includes an ECU and a fuel injection solenoid valve controlled by the ECU; the variable power operation control device includes a power mode selector switch for The power mode of the engine is manually selected; the electronic switch, the signal input end of the electronic switch is electrically connected with the ECU, and the signal output end of the electronic switch is electrically connected with the fuel injection solenoid valve; the microprocessor, the The signal input end of the microprocessor is electrically connected to the power mode selection switch, and the signal output end of the microprocessor is electrically connected to the control end of the electronic switch; the specific structure of the microprocessor refers to figure 2 , which includes a power level generating module for g...

Embodiment 3

[0033] It is another embodiment that applies the present invention to an electronically controlled fuel injection system, and its structure is basically the same as that of Embodiment 2, except that it uses the power level generation module and work logic of the microprocessor in Embodiment 2 The generation module and the injection control module are integrated in the ECU, and the electronic switch is omitted, thereby simplifying the circuit structure, which is especially suitable for matching with new models.

[0034] like Figure 4 As shown, the power mode selection switch is electrically connected to the signal input terminal of the ECU; the power level generation module, the work logic generation module and the injection control module are integrated in the ECU, and the injection control module is electrically connected to the fuel injection output module of the ECU , the injection control module outputs a control signal to the fuel injection solenoid valve according to th...

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Abstract

The invention discloses a variable-power running control device for a self-propelled harvester, which is suitable for a harvester with an engine having a mechanical fuel injection system. The variable-power running control device has the main technical concept that the variable-power running control device for the self-propelled harvester is provided with a power mode selection switch, an electromagnetic switch valve, a cylinder detection sensor and a micro-processor; the electromagnetic switch valve is arranged in an oil return bypass between a high-pressure oil pipe of the fuel injection system and an oil tank; and the micro-processor is provided with a power level generating module, an acting logic generating module and an injection control module. After making little alteration on the technical scheme, the variable-power running control device for the self-propelled harvester is also suitable for the harvester having the engine with an electrically-controlled fuel injection system. Under the situation that rated power of the engine is far higher than running load of the harvester, the variable-power running control device is capable of making cylinders of the engine do work alternately so as to flexibly lower the power level of the engine and to run the engine in a high-frequency state with a lower fuel consumption rate. Therefore, the oil-saving effect is obvious.

Description

technical field [0001] The invention relates to the technical field of self-propelled combine harvesters, in particular to a device for controlling the variable power operation of an engine of the harvester. Background technique [0002] With the rapid development of agricultural mechanization, combine harvesters are widely used. According to statistics, the number of combine harvesters in my country has reached as many as 400,000. Combine harvesters generally use engines as power sources, and fuel costs account for about 40% of the total operating costs. [0003] The use of self-propelled combine harvesters is divided into two states, one is harvesting and threshing operations, and the other is transitioning. In the first state, the power required by the combine harvester is relatively large, mainly including the power required for traveling in the farmland, the power required for crop harvesting and transmission, and the power required for threshing and cleaning machiner...

Claims

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Application Information

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IPC IPC(8): F02D41/26F02D41/30
Inventor 孙军李澎史小军陆辰
Owner 潍坊威度电子科技有限公司
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