Diesel engine nozzle device capable of being used for online monitoring of combustion state and detection method

A technology of nozzle device and combustion state, which is applied in the field of power machinery, can solve the problems of no spark plug device, etc., and achieve the effects of low cost, increased versatility, and high reliability

Active Publication Date: 2022-08-05
HARBIN ENG UNIV
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  • Abstract
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  • Application Information

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Problems solved by technology

But for diesel engines, there is no spark plug device and any ready-made electrode structure on the cylinder head

Method used

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  • Diesel engine nozzle device capable of being used for online monitoring of combustion state and detection method
  • Diesel engine nozzle device capable of being used for online monitoring of combustion state and detection method
  • Diesel engine nozzle device capable of being used for online monitoring of combustion state and detection method

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Embodiment Construction

[0038] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, but not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0039] combine Figure 1 to Figure 4 .

[0040] A diesel engine nozzle device that can be used for online monitoring of combustion state:

[0041] The nozzle device specifically includes a fuel injector 7, an ion current monitoring probe, a bias voltage source (the in-vehicle battery voltage can be directly used), a booster circuit module, a data acquisition module, an ion current generation module, an operational amplifier, and a si...

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Abstract

The invention provides a diesel engine nozzle device capable of being used for online monitoring of a combustion state and a detection method. The nozzle device specifically comprises an oil nozzle, an ionic current monitoring probe, a bias voltage source, a booster circuit module, a data acquisition module, an ionic current generation module, an operational amplifier, a signal conditioning module and a detection module. The oil nozzle is connected with a bias voltage source; the ionic current monitoring probe is integrated in the oil nozzle; the boost circuit module boosts the bias voltage source; the ionic current generation module generates ionic current in a combustion state; the data acquisition module acquires an ion current signal; the operational amplifier amplifies the ion current signal at the signal output end; the signal conditioning module converts the ion current signal into a voltage signal; the detection module detects the voltage signal; no extra detection hole needs to be machined in the engine cylinder cover, the original structure of the engine is reserved to the maximum extent, and meanwhile the universality of the engine cylinder cover detection device is improved.

Description

technical field [0001] The invention belongs to the field of power machinery, and in particular relates to a diesel engine nozzle device and a detection method which can be used for online monitoring of combustion state. Background technique [0002] With the increasing number of automobiles, the problems of environmental pollution and energy crisis caused by automobiles are becoming more and more serious. Internal combustion engine is the main power source of automobile. In order to improve its combustion and emission performance, it is urgent to realize more precise and real-time analysis and control of the combustion process of internal combustion engine. [0003] With the improvement of engine power performance and emission standards, the newly released engine models of major main engine manufacturers and research institutions are labelled with high thermal efficiency and advanced electronic control technology. High thermal efficiency and low emissions can be achieved t...

Claims

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Application Information

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IPC IPC(8): F02M65/00
CPCF02M65/00Y02T10/40
Inventor 董全杨晰宇王迪
Owner HARBIN ENG UNIV
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