本文選題：平地機(jī)　切入點(diǎn)：發(fā)動(dòng)機(jī)變功率控制　出處：《長(zhǎng)安大學(xué)》2013年碩士論文　論文類型：學(xué)位論文

【摘要】：平地機(jī)是一種以鏟刀作業(yè)為主的輪式牽引機(jī)械。鏟刀工作阻力是平地機(jī)主要的負(fù)荷來(lái)源，其變化范圍較大。目前國(guó)產(chǎn)平地機(jī)普遍存在的問(wèn)題是：小負(fù)荷工況作業(yè)時(shí)，發(fā)動(dòng)機(jī)功率利用率不高，產(chǎn)生功率富余，經(jīng)濟(jì)性較差；大負(fù)荷工況作業(yè)時(shí)，輪胎打滑嚴(yán)重，磨損劇烈。 本文在總結(jié)國(guó)外主流平地機(jī)發(fā)展現(xiàn)狀的基礎(chǔ)上，研究了變功率控制這一關(guān)鍵技術(shù)的方法。針對(duì)國(guó)內(nèi)常見(jiàn)的液力傳動(dòng)平地機(jī)，，分析了行駛驅(qū)動(dòng)系統(tǒng)各主要傳動(dòng)元件的特點(diǎn)，并以某國(guó)產(chǎn)215馬力液力式平地機(jī)為對(duì)象進(jìn)行了發(fā)動(dòng)機(jī)變功率控制方法的研究，通過(guò)功率計(jì)算為發(fā)動(dòng)機(jī)配置了幾條不同的功率曲線，提出了基于作業(yè)檔位的發(fā)動(dòng)機(jī)變功率控制方案。在此基礎(chǔ)上對(duì)動(dòng)力系統(tǒng)進(jìn)行了匹配計(jì)算，并根據(jù)特定的指標(biāo)對(duì)匹配結(jié)果的合理性進(jìn)行了評(píng)價(jià)。分別以Inter Control DCF控制器和Prosyd1131為硬、軟件開發(fā)平臺(tái)，為新樣機(jī)設(shè)計(jì)開發(fā)了發(fā)動(dòng)機(jī)變功率控制與電子油門控制程序，程序?qū)崿F(xiàn)正常運(yùn)行。為了進(jìn)一步驗(yàn)證變功率控制及匹配結(jié)果的合理性，進(jìn)行了牽引性能和油耗性能試驗(yàn)。試驗(yàn)結(jié)果表明：采用變功率控制的新樣機(jī)能滿足平地機(jī)對(duì)牽引力的需求，且在中小負(fù)荷下?tīng)恳视兴岣�；輪胎打滑損失減少；發(fā)動(dòng)機(jī)空轉(zhuǎn)油耗及樣機(jī)空行駛油耗均降低。
[Abstract]:The grader is a kind of wheeled traction machine which is mainly used for scraper operation. The working resistance of the scraper is the main load source of the grader, and its variation range is large. At present, the common problem of the domestic grader is: when working under small load, Engine power utilization is not high, power surplus is produced, economy is poor, tire skid is serious and wear is severe. On the basis of summing up the development of mainstream leveling machines abroad, this paper studies the method of variable power control, and analyzes the characteristics of the main driving components of driving drive system, aiming at the common hydraulic drive leveling machines in China. The variable power control method of a domestic 215 horsepower hydraulic grader is studied. Several different power curves are arranged for the engine by power calculation. An engine variable power control scheme based on operating gear is proposed. On the basis of this, the matching calculation of the power system is carried out, and the rationality of the matching result is evaluated according to the specific index. The Inter Control DCF controller and Prosyd1131 are used as the hardware, respectively. On the software development platform, the engine variable power control and electronic throttle control programs are designed and developed for the new prototype. The program runs normally. In order to further verify the rationality of the variable power control and matching results, The traction performance and fuel consumption performance are tested. The results show that the new prototype with variable power control can meet the need of tractive force of the grader, and the traction efficiency is improved under medium and small load, and the tire skid loss is reduced. Engine idling fuel consumption and prototype empty running fuel consumption are reduced.
【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】：2013
【分類號(hào)】：TU623.6

【引證文獻(xiàn)】

相關(guān)碩士學(xué)位論文 前1條

1 張廣輝;推土機(jī)閉鎖式液力變矩器與閉鎖控制研究[D];長(zhǎng)安大學(xué);2015年

本文編號(hào)：1641355