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Gasoline engine and method for controlling idle speed stability and high-speed restraint of gasoline engine

A control method and gasoline engine technology, applied in the field of gasoline engines, can solve the problems of high control cost, poor control effect, difficult maintenance, etc., and achieve the effect of saving control cost and simplifying maintenance

Active Publication Date: 2014-04-16
上海元纵机械电子科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is to provide a gasoline engine and a control method for gasoline engine idling stability and high-speed suppression in order to overcome the defects of high gasoline engine speed control cost, difficult maintenance, and poor control effect in the prior art

Method used

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  • Gasoline engine and method for controlling idle speed stability and high-speed restraint of gasoline engine
  • Gasoline engine and method for controlling idle speed stability and high-speed restraint of gasoline engine
  • Gasoline engine and method for controlling idle speed stability and high-speed restraint of gasoline engine

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Embodiment 1

[0029] Such as figure 1 , figure 2 As shown, the gasoline engine 1 of the present embodiment includes a carburetor 11 and an igniter 13, and a signal collecting device 111 for collecting the current working state signal and the rotational speed signal of the gasoline engine 1 is arranged inside the carburetor 11; A control unit 131 is provided for processing the current working state signal and the rotational speed signal, and controlling the igniter 13 ; both ends of an output wire 12 are respectively connected to the signal collecting device 111 and the control unit 131 .

[0030] Generally, the working state of the gasoline engine 1 is divided into an idling state, an accelerating state and an acting state. The present invention is to control the idle speed state and the acceleration state, so here, the current working state signal is divided into an idle speed signal and an acceleration signal.

[0031] The pump cover on the carburetor 11 and the body of the carburetor ...

Embodiment 2

[0046] Such as Figure 1-4 As shown, the difference between this embodiment and Embodiment 1 is that step 1007 in Embodiment 1 is decomposed into Step 10071 and Step 10072 in this embodiment.

[0047]Step 10071, the control unit 131 controls the igniter 13 to ignite by "retracting the angle" to reduce the current speed to the rated speed, if the reduction of the current speed to the rated speed is successful, go to step 1001, if the reduction of the current speed to the rated speed fails, go to step 10072 . The "retraction angle" mode is an ignition mode in which the ignition advance angle decreases as the speed increases.

[0048] Step 10072 , the control unit 131 controls the igniter 13 to ignite by "time-sharing ignition" to reduce the current speed to the rated speed, and enter into step 1001 . The "time-sharing ignition" method is to cooperate with the inductive tachometer to detect the rotational speed during ignition, and to use no-work ignition in the period of no wo...

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Abstract

The invention discloses a gasoline engine and a method for controlling idle speed stability and high-speed restraint of the gasoline engine. The gasoline engine comprises a carburetor and an igniter. A signal collecting device used for collecting current work state signals and rotation speed signals of the gasoline engine is arranged inside the carburetor. A control unit is arranged in the igniter. The two ends of an output wire are connected with the signal collecting device and the control unit respectively. The method for controlling idle speed stability and high-speed restraint of the gasoline engine is achieved through the gasoline engine. Through application of the gasoline engine and the method, the idle speed stability of the gasoline engine is controlled in real time, especially under the condition that idle speed drifting is large on the occasions with large change in environment temperature and humidity, the idle speed can be stabilized within a preset rotation speed range; under the condition that mixed gas is relatively lean, the no-load high speed can be effectively restrained within a required rotation speed range; meanwhile cost is saved and maintenance is simplified.

Description

technical field [0001] The invention relates to a gasoline engine and a control method for idling stability and high-speed suppression of the gasoline engine. Background technique [0002] The speed at which the gasoline engine is idling is called the idle speed, which is the lowest speed at which the gasoline engine maintains normal operation without external output power. [0003] Gasoline engines currently on the market, especially general-purpose small gasoline engines with small displacement, have unstable idling speeds. Sometimes the idling speed deviation is large under different site environments, which has a great impact on the consistency of machine operation. For those engines that require over-emission indicators, the mixture needs to be adjusted to be leaner, but in this way, the no-load high speed will be higher than the safety-regulated speed, which requires the no-load high speed to be suppressed. Existing gasoline engines use electronic fuel injection to ac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02P9/00
Inventor 方可田
Owner 上海元纵机械电子科技有限公司
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