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Idling speed adjusting method and system

An adjustment method and an adjustment system technology, applied in the direction of governor, fuel injection control, engine control, etc., can solve problems such as shortage, and achieve the effect of reducing the demand for hoisting

Active Publication Date: 2017-02-01
SANY AUTOMOBILE HOISTING MACHINERY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the prior art, there is a lack of consideration of the impact of altitude factors

Method used

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  • Idling speed adjusting method and system
  • Idling speed adjusting method and system
  • Idling speed adjusting method and system

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations. Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts belong to the protection scope of the present invention.

[0030] It should be noted that like numerals and let...

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Abstract

The embodiment of the invention provides an idling speed adjusting method and system. The idling speed adjusting method and system are applied to a vehicle control system of an autocrane. The method comprises the steps that the value of the altitude where the autocrane is located and the pressure value and the flow value at an oil pump outlet of the autocrane are acquired; engine external characteristic data are corrected according to the value of the altitude, and the load torque need is calculated according to the pressure value and the flow value; the maximum engine torque corresponding to the corrected engine external characteristic data is sought; and the load torque need is compared with the maximum engine torque, and if the maximum engine torque is smaller than the load torque need, an engine is controlled to increase the rotating speed. According to the method, the value of the current altitude and the load torque need are detected to adjust the power takeoff idling speed in real time, the suspended load need of the autocrane is met, and meanwhile the suspended load oil consumption is reduced.

Description

technical field [0001] The invention relates to the technical field of truck cranes, in particular to an idle speed adjustment method and system. Background technique [0002] Idle speed refers to the minimum speed at which the engine can maintain stable operation only by overcoming the frictional resistance of its own internal parts without outputting power under the condition of no load. Due to the hoisting requirements of the car crane, the car crane needs to have a greater power take-off idle speed than the car crane. The inventor found through research that in the prior art, different idle speeds for getting on and off the vehicle are used to solve this problem, and it is impossible to adjust the power take-off idle speed in real time according to the hoisting demand. In addition, due to the influence of altitude on the performance of the automobile engine, it is necessary to correct the external characteristic data of the engine according to the current altitude of th...

Claims

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Application Information

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IPC IPC(8): F02D31/00F02D41/08F02D41/16
Inventor 谭松涛
Owner SANY AUTOMOBILE HOISTING MACHINERY
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