本文關(guān)鍵詞：高壓噴油器的控制特性研究及其驅(qū)動(dòng)電路設(shè)計(jì)　出處：《長(zhǎng)安大學(xué)》2016年碩士論文　論文類型：學(xué)位論文

  更多相關(guān)文章： 高壓噴油器 控制信號(hào) 開啟電壓 開啟電流 驅(qū)動(dòng)系統(tǒng)

【摘要】：隨著汽車行業(yè)的不斷發(fā)展,缸內(nèi)直噴技術(shù)越來(lái)越多地運(yùn)用于汽車的燃油噴射系統(tǒng),而高壓噴油器是缸內(nèi)直噴技術(shù)的核心部件。它具有靈活而精確的控制方式,在環(huán)保和燃油經(jīng)濟(jì)性能方面具有很大的優(yōu)勢(shì),受到了人們的青睞。高壓噴油器的工作狀況直接影響著汽車發(fā)動(dòng)機(jī)的整體性能、燃油的利用率以及汽車尾氣污染物的排放。首先,本文介紹了高壓噴油器的結(jié)構(gòu)和工作原理,分析了高壓噴油器控制信號(hào)的特點(diǎn),該信號(hào)由主脈沖和PWM保持波組成。然后結(jié)合其內(nèi)部結(jié)構(gòu)特點(diǎn)和工作原理,建立了高壓噴油器的數(shù)學(xué)模型,推導(dǎo)出噴油器開啟過(guò)程中所用時(shí)間與電壓之間的關(guān)系式。接著利用AMESim液壓仿真軟件設(shè)計(jì)了高壓噴油器的仿真模型,結(jié)合噴油器在開啟過(guò)程中內(nèi)部線圈電流變化的特點(diǎn),詳細(xì)分析了不同開啟電壓對(duì)高壓噴油器開啟速度及功耗的影響。其次,設(shè)計(jì)了高壓噴油器的驅(qū)動(dòng)系統(tǒng),根據(jù)系統(tǒng)設(shè)計(jì)的要求與方案,實(shí)現(xiàn)了開啟電壓和脈寬可調(diào)的驅(qū)動(dòng)電路設(shè)計(jì)。該驅(qū)動(dòng)電路的測(cè)試結(jié)果滿足系統(tǒng)設(shè)計(jì)的最初要求,能夠控制高壓噴油器進(jìn)行分組、順序噴射。符合汽車發(fā)動(dòng)機(jī)的實(shí)際工作狀況,為高壓噴油器的實(shí)際功能研究提供了測(cè)試平臺(tái)。最后,在實(shí)驗(yàn)室進(jìn)行了高壓噴油器的控制特性實(shí)驗(yàn),記錄了大量的實(shí)驗(yàn)數(shù)據(jù)和測(cè)試波形。通過(guò)對(duì)所測(cè)得的數(shù)據(jù)和波形進(jìn)行分析,證明了前期理論仿真的正確性以及本文所設(shè)計(jì)的高壓噴油器驅(qū)動(dòng)系統(tǒng)的可靠性。
[Abstract]:With the continuous development of the automotive industry, GDI technology more and more widely used in automotive fuel injection system, and the high pressure injector is the core component of GDI engine. Its control mode is flexible and accurate, has great advantages in environmental protection and fuel economy performance, favored by the people. The working condition of high-pressure injector directly affects the overall performance of the automobile engine, and the rate of automobile exhaust emissions of pollutants using fuel. Firstly, this paper introduces the structure and working principle of high pressure injector, analyzed the characteristics of control signal of high pressure injector, the signal from the main pulse and PWM wave. Then keep the internal structure characteristics and working principle, established the mathematical model of high pressure injector, injector opening derived relationship between the time and the voltage used in the process of using AMESim liquid. The simulation model of high pressure injector pressure design simulation software, combined with the characteristics of the injector with open internal coil current changes in the process, a detailed analysis of the different effects of opening speed and power consumption of the turn-on voltage of the high pressure injector. Secondly, the driving system of high pressure injector design, according to the requirements of system design and realization scheme. The design of driving circuit turn-on voltage and pulse width adjustable. The driving circuit of the test results meet the initial requirements of system design, can control the high-pressure fuel injector group, sequential injection. According to the actual working condition of vehicle engine, provides a test platform for the actual function of high-pressure injector. Finally, the pressure control characteristic experiment the injector in the laboratory, a large number of experimental data and test waveforms were recorded. Based on the measured data and waveform analysis, proves the first period theory The correctness of the simulation and the reliability of the high voltage injector drive system designed in this paper.

【學(xué)位授予單位】：長(zhǎng)安大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2016
【分類號(hào)】：U464.136

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