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Diesel engine throttle position detection method and detection apparatus

A technology of throttle position and detection method, which is applied in the direction of measuring devices, mechanical equipment, engine control, etc., can solve problems such as the influence of throttle opening signals, achieve the effects of easy measurement, improved detection accuracy, and reduced calibration times

Inactive Publication Date: 2009-05-13
SANY HEAVY IND CO LTD (CN)
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  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

[0004] The problem is that after long-term use, the resistance value of the rotary potentiometer will change under the influence of factors such as wear and use environment; this makes the linear relationship between the output signal of the rotary potentiometer and the throttle opening change, thus affecting the detected The throttle opening signal is affected and needs to be re-calibrated

Method used

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  • Diesel engine throttle position detection method and detection apparatus
  • Diesel engine throttle position detection method and detection apparatus

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Embodiment Construction

[0025] The basic idea of ​​the present invention is to determine the position of the throttle by acquiring the tension on the steel wire rope connecting the stepper motor transmission mechanism and the speed regulating pull rod of the throttle.

[0026] The following will be described in detail in conjunction with the accompanying drawings and embodiments.

[0027] See figure 1 , which is a flow chart of the method for detecting the throttle position of a diesel engine in the present invention. The detection method comprises the following steps:

[0028] S101. Calibrate the relationship between the tensile force on the steel wire rope connecting the stepping motor transmission mechanism and the throttle speed regulating rod and the throttle opening.

[0029] There is a one-to-one correspondence between the tension on the wire rope and the throttle opening, and the key is to determine the correspondence, but the analytical function form between the two is difficult to obtain,...

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Abstract

The invention discloses a method for detecting the position of a throttle of a diesel engine. Current pulling force of a steel wire rope is obtained; the data of an opening degree of the throttle corresponding to the current throttle of the steel wire rope is obtained from a pre-stored data list; and the data list has corresponding data between the pulling force born by the steel wire rope after being calibrated and the opening degree of the throttle. The pulling force born by the steel wire rope is easy to measure and is less influenced by the factors of the abrasion and the environment of a measuring device so that the pulling force born by the steel wire rope and the opening degree of the throttle keep a strict corresponding relation, which is favorable for improving the detection precision of the opening degree of the throttle and reduces the calibrating times. On the basis, the invention also discloses a device for detecting the position of the throttle of the diesel engine.

Description

technical field [0001] The invention relates to the field of fuel engine control, in particular to a detection method and a detection device for a throttle position of a diesel engine. Background technique [0002] On the engineering equipment with diesel engine as the power source, in order to improve the working performance and efficiency of the equipment, it is necessary to control the speed of the diesel engine to realize the automatic adjustment of its speed. In the realization process of diesel engine speed adjustment without electronic speed regulation: the speed control unit controls the stepper motor in the throttle actuator by detecting the actual speed and target speed of the diesel engine; the output shaft of the stepper motor passes through the mechanical transmission mechanism, and then passes The steel wire rope is connected with the throttle speed regulating rod; thus, by adjusting the throttle opening, the control of the diesel engine speed is realized. [...

Claims

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Application Information

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IPC IPC(8): F02D11/10G01B21/00
Inventor 周翔周继辉姚明明
Owner SANY HEAVY IND CO LTD (CN)
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