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Apparatus for controlling engine fuel quantity

A control device and fuel control technology, applied in the direction of engine control, fuel injection control, machine/engine, etc., can solve the problems of unable to stop, the stepping motor can not be controlled accurately without returning to the position, and the cost can be achieved. Low, conducive to mass production promotion, strong adaptability

Inactive Publication Date: 2010-07-28
周文华
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 2. Power-off position return: usually the stepper motor does not have an automatic return function, and it will stay at this position after turning to a certain position and power off, so the initial position when the system starts cannot be determined
In the field of position control where the work of the controlled object is related to the absolute position of the stepper motor, the stepper motor will not be able to perform accurate control if it is powered off and does not return to its position.
In the case of engine fuel control, if the stepper motor does not return, it may cause serious problems such as failure to stop, speeding up, etc.

Method used

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  • Apparatus for controlling engine fuel quantity
  • Apparatus for controlling engine fuel quantity
  • Apparatus for controlling engine fuel quantity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1Shown is the engine fuel quantity control device using the in-line pump rack 2 as the engine fuel quantity control mechanism. The engine fuel quantity control device also includes an oil stop handle 1 and a rear cover 12; the connecting device is mainly composed of a stopper 3, a roller 4, a roller pin 5, a rocker arm 6, a positioning screw 7, a positioning baffle 8 and a return spring 11, The block 3 is connected with the in-line pump rack 2, the roller pin 5 is connected with one end of the rocker arm 6, the roller 4 is set outside the roller pin 5, the positioning baffle 8 is fixed with the other end of the rocker arm 6, and connected to the output of the stepping motor. On the shaft 9, one end of the return spring 11 is fixed, and the other end is connected with the positioning baffle 8 and the in-line pump rack 2. The controller 14 determines the working condition of the current engine according to the input of the sensor 16 and other switches, determines ...

Embodiment 2

[0034] figure 2 A schematic diagram of the engine fuel quantity control device using the distribution pump control sliding sleeve 18 as the engine fuel quantity control mechanism is shown. The connection device is mainly composed of roller 4, roller pin 5, rocker arm 6, positioning screw 7, positioning baffle 8, lever 17, torsion spring 19 and torsion spring pin 20. The roller pin 5 is connected with one end of the rocker arm 6, and the roller 4 Set on the outside of the roller pin 5, the positioning baffle 8 is fixed with the other end of the rocking arm 6, connected on the output shaft 9 of the stepper motor, the lever 17 is fixed with the torsion spring 19, and the torsion spring 19 is sleeved on the torsion spring pin 20.

[0035] The position shown in the figure is the initial position in the power-off state: the torsion spring 19 sleeved on the torsion spring pin 20 applies a torque to the lever 17 in the counterclockwise direction as shown in the figure through the pre...

Embodiment 3

[0040] image 3 A schematic diagram of the engine fuel quantity control device using the single cylinder pump rack 24 of the diesel engine as the engine fuel quantity control mechanism is shown. Connecting device mainly is made up of torsion spring 21, rocking arm 22, stopper 23, and torsion spring 21 one end is fixed, and the other end links to each other with rocking arm 22, and rocking arm (22) is connected on the stepper motor output shaft (9), and stopper 23 links to each other with diesel single-cylinder pump rack 24.

[0041] When the controller 14 is not powered on, the stepper motor 10 loses power, or the controller 14 cuts off the current of the stepper motor 10, under the action of the pretightening force of the torsion spring 21, the output shaft 9 of the stepper motor, the rocker arm 22, the gear Block 23 and diesel engine single-cylinder pump rack 24 will be located in the initial position under the location of set screw and locating baffle plate. This initial ...

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Abstract

The invention discloses an engine fuel quantity control device which is mainly composed of a controller, a sensor, a stepping motor, a bale of wires, an engine fuel quantity control mechanism and a connecting device. The invention belongs to a digital electric control type device, can totally meet the exact demands proposed by the rotation speed and the load of various applied occasions, and has strong applicability. No use of any regulation can realize the accuracy control of the similar engines, at the same time, the cost of the invention is very low, which is beneficial for the popularization of mass production.

Description

technical field [0001] The present invention relates to a control device, in particular, to an engine fuel quantity control device. Background technique [0002] In engine fuel control, proportional electromagnets or rotating electromagnets are usually used as actuators to drive fuel control devices. The actuator has a relatively large output torque. It uses the principle of double feedback of position and speed to control the controlled object. The actuator and sensor The cost is relatively high, and it is mainly suitable for engines with higher power. The engine fuel control device using a stepping motor for position control cancels the position sensor, the output current of the actuator does not change with the position opening, and it is not easy to be damaged by heat, and the cost of the actuator and the sensor is relatively low. However, the use of stepper motors for engine fuel control needs to address the following issues: [0003] 1. Accuracy, travel and response ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02D41/24
Inventor 周文华
Owner 周文华
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