A dual-fuel engine knock detection and control system and method based on ion current
A dual-fuel engine and ion current technology, which is applied in engine control, fuel injection control, machine/engine, etc., can solve problems such as limitations and achieve high cost, accurate monitoring, and low cost
Active Publication Date: 2017-02-22
TONGJI UNIV
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Problems solved by technology
Among the conventional measurement methods, pressure sensors and wall vibration sensors are the most commonly used, but due to some disadvantages, their practical use has been greatly restricted. The use of ion current method to analyze and study knocking is the most important in recent years. a new research method
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[0034] like figure 1 As shown, a dual-fuel engine knock detection and control system based on ion current includes ion current probe 1, ion current detection circuit 2, fuel injector 3, fuel injection drive circuit 4, microcontroller 5, and signal acquisition and processing module 6 and the automobile ECM7, the ion current detection circuit 2 is respectively connected with the ion current probe 1 and the microcontroller chip 5, and the input terminal is grounded, and the fuel injection drive circuit 4 is connected with the fuel injector 3 and the microcontroller 5 respectively, and the microcontroller 5 are respectively connected with the automobile ECM7 and the signal acquisition and processing module 6, the microcontroller 5 includes an analog-to-digital converter 51 and a microcontroller chip 52, and the microcontroller chip 52 is respectively connected to the analog-to-digital converter 51, the signal acquisition and processing module 6, the spray nozzle The oil drive circ...
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The invention relates to a dual-fuel engine knock detecting and controlling system and method based on an ionic current. The system comprises an ionic current probe, an ionic current sensing circuit, an oil injector, an oil injection drive circuit, a microcontroller, a signal acquisition processing module and an automobile ECM, the ionic current sensing circuit is connected with the ionic current probe and a microcontrol chip respectively, and an input end of the ionic current sensing circuit is connected with the ground. The oil injection drive circuit is connected with the oil injector and the microcontroller respectively, and the microcontroller is connected with the automobile ECM and the signal acquisition processing module respectively. Compared with the prior art, the dual-fuel engine knock detecting and controlling system and method based on the ionic current have the advantages that the cost is low, the monitoring is precise and the like.
Description
technical field [0001] The invention relates to the field of automobile engines, in particular to a dual-fuel engine knock detection and control system and method based on ion current. Background technique [0002] Energy and the environment are two major challenges facing all mankind. How to actively deal with these two issues has become the focus of social attention. As an important consumer of energy and an important polluter of the environment, automobiles have been led by new technologies and new standards. , conform to the theme of the times, and move towards the goal of energy conservation and emission reduction. my country has a large population, but the per capita car ownership is relatively low. In recent years, the automobile manufacturing industry has developed rapidly. It will reach 130-150 million. Traditional internal combustion engines basically use gasoline or diesel as fuel, and fuel combustion produces a large amount of harmful gases and particles, which is ...
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IPC IPC(8): F02D41/30F02D41/04
Inventor 李理光陆海峰梁敬汪阳汪超
Owner TONGJI UNIV