Simulation Control System of Engine Fuel Injector

A technology of analog control and fuel injectors, which is applied in the direction of engine components, engine testing, machine/engine, etc., can solve the problem that the control circuit is only applicable, and achieve the effects of improving accuracy, reliable communication, and stable system performance

Active Publication Date: 2016-04-27
TIANJIN UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, there are few studies on the low-speed control system of the fuel injector used in the spray test bench. The disadvantage of similar research is that its control circuit is only applicable to a specific type of fuel injector.

Method used

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  • Simulation Control System of Engine Fuel Injector
  • Simulation Control System of Engine Fuel Injector
  • Simulation Control System of Engine Fuel Injector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0049] like image 3 As shown, the engine fuel injector analog control system includes: a PC 101, a level conversion circuit 102 connected in series with the PC, which converts the level signal of the RS232 serial communication of the PC into a TTL level signal of the single-chip microcomputer; The ECU electronic control unit 103 connected in series with the level shifting chip; the fuel injector drive circuit 105 connected in series with the ECU electronic control unit, the boost circuit 104 and the fuel injector 106 respectively connected to the drive circuit; the series connection with the ECU electronic control unit Connected high-speed camera 107.

[0050] like Image 6 As shown, the gasoline engine fuel injector drive circuit 105 includes: IR2101 type drive chip, the pin 1 of the IR2101 type drive chip is connected to the +12V power supply, and the pin 2 is connected to the pin 4 of the first optocoupler. Pin 4 is grounded;

[0051] a first optocoupler whose pin 2 is ...

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Abstract

The invention relates to an analogue control system of an oil atomizer of a gasoline engine. According to the analogue control system of the oil atomizer of the GDI gasoline engine, electric control parameters can be controlled, and the analogue control system can be suitable for oil atomizers of different types, is excellent in working performance and is used for an atomizing testbed. The analogue control system of the oil atomizer of the gasoline engine comprises a PC, an electrical level converting circuit, an ECU and an oil atomizer drive circuit, wherein the electrical level converting circuit is connected with the PC in series and converts electrical signals of RS232 serial communication of the PC into TTL electrical signals of a single chip microprocessor; the ECU is connected with an electrical level converting circuit in series; the oil atomizer drive circuit is connected with the ECU in series and is connected with a boosting circuit 104 and the oil atomizer 106. Compared with the prior art, the analogue control system of the oil atomizer of the gasoline engine has the advantage of meeting the requirement for low-speed accurate control.

Description

Technical field: [0001] The invention relates to a gasoline engine fuel injection device, and further relates to a gasoline engine fuel injector simulation control system. Background technique: [0002] The fuel injector is a device that injects fuel into the combustion chamber at a certain temperature and pressure according to the specified fuel injection timing, fuel injection law and fuel injection volume. The quality of its work performance directly affects the atomized combustion of fuel, and then Affects various performance indicators of the engine, including emission, power, and economy. In the actual application of GDI engine, it is found that the working performance of the injector will deteriorate with time, so it is necessary to study the working performance and atomization characteristics of a single injector. Therefore, it is essential to develop a simple, efficient, and precise control system for injectors used in spray experiments. [0003] The core componen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F02M65/00
Inventor 裴毅强周建伟谈军华张延峰秦静
Owner TIANJIN UNIV
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